REVISIONS REV DESCRIPTION DATE APPROVED

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1 REVISIONS REV DESCRIPTION DATE APPROVED A Issued Report March 28 th 2013 KAR B Addition of Spectrum Analyzer Plots April 24, 2013 KAR C Incorporation of University of Regina Comments September 9, 2013 KAR DRAWN CHECKED SMR Planetworks Consulting Corporation North Vancouver, BC, Canada SaskPower Sensus Electrical and Gas Meter Bank 2041 Hamilton Street, Regina, Saskatchewan Safety Code 6 Report Prepared for SaskPower THIS DOCUMENT HAS BEEN ELECTRONICALLY SIGNED WHEN STAMP IS VISIBLE. REFER TO THE ELECTRONIC VERSION FOR SIGNATURE AND DOCUMENT VERIFICATION. Measured By: Brad MacKenzie EIT Prepared by: Karl Reardon, P.Eng. Tel: kreardon@planetworks.ca Report date: September 9, 2013 SIZE DWG. NO. STC_AMI_LAB REV C SCALE: None PAGE 1 OF 34

2 1 SUMMARY SITE LOCATION/ DETAILS ATTESTATION SAFETY CODE 6 DEFINITIONS REVIEW OF FINDINGS, CONCLUSIONS AND REMEDIAL ACTIONS Meter Inventories Findings Measurement Uncertainty Next Steps and Required Remedial Actions MEASUREMENT PROCEDURE DESCRIPTION OF PROCEDURE USED TEST EQUIPMENT DESCRIPTION SITE PLAN AND PHOTOGRAPHS TRAFFIC CONFIRMATION SASKPOWER METER BANK NBM 550 CALIBRATION CERTIFICATE EC5091 CALIBRATION CERTIFICATE FIELD PROBE LOG FILES TEN METERS INSTALLED (NORMAL OPERATION): CAPTURE FIELD PROBE LOG FILES BACKGROUND NOISE (NO METERS PRESENT): CAPTURE FIELD PROBE LOG FILES BACKGROUND NOISE (NO METERS PRESENT): CAPTURE FIELD PROBE LOG FILES NINE METERS INSTALLED (NORMAL OPERATION): CAPTURE FIELD PROBE LOG FILES BACKGROUND NOISE (NO METERS PRESENT): CAPTURE FIELD PROBE LOG FILES NINE METERS INSTALLED (ATYPICAL OPERATION): CAPTURE SPECTRUM ANALYZER PLOTS SaskPower Sensus Electrical and Gas Meters 2 of 35 APRIL 2013

3 Executive Summary Objective Approach Findings To certify the compliance of SaskPower s Smart electric and gas meters (both utilizing Sensus FlexNet Advanced Metering Infrastructure) against Canadian federal regulations as specified by Health Canada Safety Code 6. This report describes the test results for a meter bank of six electric meters and four gas meters installed in SaskPower s STC AMI Lab located in Regina, Saskatchewan. Planetworks, a telecommunication engineering consulting firm, has been contracted to conduct independent testing of SaskPower s Smart Meters. Planetworks uses a Narda Broadband Field Meter (NDM 550) with a shaped isotropic field probe, which is the most accurate field meter solution available for broadband radiofrequency (RF) exposure limit measurements. The testing environment has been constructed to be as realistic a representation of usage environment as possible, with multiple Smart Meters located throughout the test area to simulate a full network environment. Although care was taken to ensure no other strong emitters of RF energy were present in the testing environment, it was not possible to eliminate the secondary sources of RF energy such as fluorescent lighting, electrical transformers, external Wi Fi hotspots, signals from cellular sites, broadcast sources, etc. Therefore, some level of background RF energy is included in all the measurement results. All testing has been conducted in conformance to procedures defined in Health Canada s Safety Code 6. At the operational frequencies of the Smart Meters, Safety Code 6 defines a maximum permissible power density of 6 W/m 2 (averaged over a 6 minute period) for uncontrolled areas (i.e. public areas). Using the relationship that 1 W/m 2 equals 100 W/cm 2, the Safety Code 6 permissible limit for 900 MHz emissions can be converted to 600 W/cm At 20 centimeter distance from the meter in the centre of a bank of ten Smart Meters, the average power density measured over a four hundred minute period is % of Health Canada Safety Code 6 limit for public areas (uncontrolled environments). Similarly, at 20 centimeter distance from the meter in the centre of a bank of nine Smart Meters, the average power density measured over a four hundred minute period is % of Health Canada Safety Code 6 limit for public areas (uncontrolled environments).these measured values include the background radio frequency signals originating from other internal or external sources. 2. The Narda Field Meter measures the cumulative emissions across a very wide frequency range and automatically applies measurements against the Health Canada Safety Code 6 limit appropriate for each frequency. While this approach provides a very accurate assessment of the percentage of Safety Code 6 limit attained, it is not possible to accurately convert this value into a power density due to the presence of background RF sources. However, if it is assumed that all measured emissions originated from the Smart Meters, during both tests, the two percentage values attained during normal operation (0.5855% and %) can be converted to a power density of W/cm 2 and W/cm 2. The power density attributed to the Smart Meters alone would be less than this value. 3. The range of power densities measured over the two day period, under normal operation, was % to % of Safety Code 6 limits for public areas (uncontrolled environments). 4. All of the above measurement results continue to remain below Safety Code 6 limits when a measurement uncertainty factor of 2.65 is applied to account for worst case signal reflections. SaskPower Sensus Electrical and Gas Meters 3 of 35 APRIL 2013

4 1 Summary 1.1 Site Location/ Details Site Street Address Location of Antennas 2041 Hamilton Street, Regina, Saskatchewan A bank of six Sensus electrical meters, and four Sensus gas meters were affixed to a test board within SaskPower s STC AMI Lab. This lab is located in the basement of a multi story building belonging to SaskPower and is used for Smart Metering activities. Test Start March 26 th 2013, 10:32:03 Test Stop March 27 th 2013, 17:03:59 Site Plan Attch. Yes Antenna Photos Attch. Meter Bank Photo Site Photo Attch Yes Log Files Attch. Yes 1.2 Attestation I, Karl Reardon, a Professional Engineer registered in the Province of Saskatchewan, certify that, at the time of testing, the radio frequency field levels for a bank of ten Sensus Smart Meters complies with Health Canada regulations based on the specified documentation below: (HC Pub ) Limits of Human Exposure to Radio frequency Electromagnetic Energy in the Frequency Range from 3 khz to300 GHz Safety Code 6 (2009) (HC Pub ) Technical Guide for Interpretation and Compliance Assessment of Health Canada's Radio frequency Exposure Guidelines Measured Results Below Health Canada Safety Code 6 Exposure Limits for Uncontrolled Environments (General Public, not trained in radio frequency hazards, exposed to RF and Microwave emissions) Induced Currents are below HC SC 6 Requirements Signage Meets HC SC 6 Requirements Within Safe Limits Defined by Health Canada Yes N/A Access to test location was controlled and logged Yes Note: Access to the building containing the test lab was restricted via keycard access at the building s front door. The lab s door is also keyed for controlled access. Notes (1) The Sensus Smart Meter products being tested contain both a FlexNet radio as well as a Zigbee radio. Both radios are configured to transmit at the same frequency and both radios were enabled during testing. Due to the test setup, no transmissions would have been made from the Zigbee radio. This setup best represents the typical operation of the Smart Meter products. (2) The Narda probe was placed to ensure the path between the Sensus meter s antennas and the Narda Probe was un obstructed. This placement ensured maximum readings from the meter bank under test. (3) The Narda meter records cumulative RF emissions from all RF sources in the spectral range from 0.3 MHz to 50,000 MHz. Care was taken to ensure no significant RF sources were active in the room during the test. It should be noted SaskPower Sensus Electrical and Gas Meters 4 of 35 APRIL 2013

5 that buildings typically contain many secondary RF sources such as fluorescent lighting, electrical transformers, motors, etc. Additionally, most populated areas contain many external RF sources that cannot be controlled, including Wi Fi hotspots, signals from cellular sites and devices, two way radio communication and broadcast sources. (4) Values presented relative to Health Canada Safety Code 6 s controlled environments are multiplied by a factor of five to convert to Health Canada Safety Code 6 values for uncontrolled environments (Public Levels). The scaled uncontrolled environment values are most commonly used in this report, with the exception of Section 7 through Section 12 (as noted). 1.3 Safety Code 6 Definitions Prior to the 2009 dated release of the Health Canada Safety Code 6 specifications, the documentation defined exposure limits for "RF and occupationally exposed workers" and exposure limits for the "general public." The general public was defined as any individual who may be exposed to RF emissions and has no knowledge or training in radio technology. Consequently exposure limits for the general public are five times lower than that for the RF worker who must have adequate safety training to work with antenna systems. Challenges arose when defining "occupationally exposed workers." In the 2009 edition of the Safety Code 6 guidelines, Health Canada attempted to address the ambiguities in these definitions by categorizing sites as "controlled" and "uncontrolled" where "uncontrolled" replaced the definition for the general public. The following text is lifted from current Health Canada s Safety Code 6 documentation and defines controlled versus uncontrolled environments. Controlled and Uncontrolled Environments For the purpose of this code, controlled environments are defined as those where all of the following conditions are satisfied: (a) The RF field intensities in the controlled area have been adequately characterized by means of measurements, calculations or modeling (such as with the use of FDTD [finite difference time domain] software), (b) The exposure is incurred by persons who are aware of the potential for RF exposure and are cognizant of the intensity of the RF energy in their environment and, (c) The exposure is incurred by persons who are aware of the potential health risks associated with RF energy exposures and whom can control their risk using mitigation strategies. All situations that do not meet the specifications above are considered to be uncontrolled environments. Uncontrolled environments are defined as areas where either insufficient assessment of RF energy has been conducted or where persons who are allowed access to these areas have not received proper RF awareness training and have no means to assess or, if required, mitigate their exposure to RF energy. 1 1 Chapter 2, Maximum Exposure Limits, Limits of Human Exposure to Radiofrequency Electromagnetic Energy in the Frequency Range from 3 khz to 300 GHz, HC Pub.: SaskPower Sensus Electrical and Gas Meters 5 of 35 APRIL 2013

6 Exposure limits for controlled and uncontrolled environments is defined by Health Canada in the following tables. Applying the exposure limits from these standards to SaskPower s Smart Meters which use a radio operating near 900 MHz the limits are: Uncontrolled Environments 6 Watts/meter squared (W/m 2 ) or 600 microwatts per square centimeter ( W/cm 2 ) Controlled Environments 30 W/m 2 or 3,000 W/cm 2 SaskPower Sensus Electrical and Gas Meters 6 of 35 APRIL 2013

7 Conversion between W/m 2 and W/cm 2 is performed using the relationship that 1 W/m 2 equals 100 W/cm Review of Findings, Conclusions and Remedial Actions Planetworks conducted testing to Health Canada Safety Code 6 for a bank of ten Smart Meters deployed in a realistic field simulation, with multiple other meters located at further distances Meter Inventories A bank of six electrical meters, and four gas meters were present in the immediate test area. A meter inventory is seen below. Meter Type Subclass FlexNet Model FlexNet ID Serial Number Electrical 200A 240V 1Phase 3Wire 530X N Electrical 200A 240V 1Phase 3Wire 530X N Electrical 200A 240V 1Phase 3Wire 530X N Electrical 200A 240V 1Phase 3Wire 530X N Electrical 200A 240V 1Phase 3Wire 530X N Electrical 200A 240V 1Phase 3Wire 530X N Gas M 300GM N/A Gas M 300GM N/A Gas M 600GM NAC Gas M 100GM A NA2G Details regarding the meter locations are included in Section Findings Testing showed that even in close proximity (20 centimeter) to a bank of nine, or ten, Smart Meters, RF emissions from the meters are less than the limits imposed by Health Canada for the general public in uncontrolled environments. In summary, the following can be derived from the test data collected: Test Type Attainment of Uncontrolled SC6 [%] Conclusion: RF Emissions 1 Normal more than 170 times less than Health Canada's limits 2 Normal more than 202 times less than Health Canada's limits 3 Atypical more than 45 times less than Health Canada's limits Test 3 represents an atypical operation case where the meters are configured into a repetitive transmission mode for test and diagnostic purposes. While this mode would be rarely utilized and would only be used for onsite troubleshooting, the measurement of this case was still performed to ensure this diagnostic mode can be performed safely. It should be noted that, even during atypical Smart Meter operation (i.e. Test 3) where RF readings are collected in close proximity to a number of Smart Meters transmitting at a duty cycle that is more than 27 times greater than what was observed during normal operation (i.e. Test 1 and Test 2), RF emissions are below Health Canada s limits. During normal operation (i.e. Test 1 and Test 2), the Smart Meters being tested emit RF at an even smaller fraction of the uncontrolled limit. For the sake of verification through repetition, and completeness, three discrete tests were conducted. The first two tests were similar, while the third test measured the RF emissions from the Smart Meters during atypical operation. See Section 2.1 for further information on each test setup. When exploring the results of each test individually, the following is observed: SaskPower Sensus Electrical and Gas Meters 7 of 35 APRIL 2013

8 Test 1: When measured under normal operation, the meters are more than 170 times less than Health Canada limits for the general public in uncontrolled environments. The cumulative effect of the meter bank under test, and all background emissions from other internal (e.g. fluorescent lighting) and external sources (e.g. cell sites), resulted in an average level of % of the Health Canada Safety Code 6 in an uncontrolled environment standard (i.e. 1/170 th of the limit). Capture 1 constitutes the measurement of RF emissions from the Smart Meter bank for Test 1. See Section 2 for further details. Background measurements were also taken at the same site location, after the Sensus Smart Meters had been pulled from their bases, and removed from the vicinity of the test location. This benchmark (ie: experimental control) was used for comparative purposes versus what was collected during Capture 1. The measured average across this time period was % of the uncontrolled SC 6 limit for the general public in uncontrolled environments. While one cannot draw a full correlation between the two tests as they occurred over different time periods, it is noted that a low level of background emissions are present at the location without the Smart Meter system active, and that the level recorded when the Smart Meters were active was not significantly different. Capture 2 constitutes the measurement of background RF emissions for Test 1. See Section 2 for further details. Test 2: When measured under normal operation, the meters are more than 202 times less than Health Canada limits for the general public in uncontrolled environments. The cumulative effect of the meter bank under test, and all background emissions from other internal (e.g. fluorescent lighting) and external sources (e.g. cell sites), resulted in an average level of % of the Health Canada Safety Code 6 in an uncontrolled environment standard (i.e. 1/202 nd of the limit). Capture 4 constitutes the measurement of RF emissions from the Smart Meter bank for Test 2. See Section 2 for further details. Background measurements were also taken at the same site location, after the Sensus Smart Meters had been pulled from their bases, and removed from the vicinity of the test location. This benchmark (ie: experimental control) was used for comparative purposes versus what was collected during Capture 4. The measured average across this time period was % of the uncontrolled SC 6 limit for the general public in uncontrolled environments. While one cannot draw a full correlation between the two tests as they occurred over different time periods, it is noted that a low level of background emissions are present at the location without the Smart Meter system active, and that the level recorded when the Smart Meters were active was not significantly different. Capture 3 constitutes the measurement of background RF emissions for Test 2. See Section 2 for further details. Test 3: When measured under atypical operation, the meters are more than 45 times less than Health Canada limits for the general public in uncontrolled environments. The cumulative effect of the meter bank under test, and all background emissions from other internal (e.g. fluorescent lighting) and external sources (e.g. cell sites), resulted in an average level of % of the Health Canada Safety Code 6 in an uncontrolled environment standard (i.e. 1/45 th of the limit). Capture 6 constitutes the measurement of RF emissions from the Smart Meter bank for Test 3. See Section 2 for further details. A description of the test procedure that constitutes atypical operation is found in Section 2. Background measurements were also taken at the same site location, after the Sensus Smart Meters had been pulled from their bases, and removed from the vicinity of the test location. This benchmark (ie: experimental control) was used for comparative purposes versus what was collected during Capture 6. The measured average across this time period was % of the uncontrolled SC 6 limit for the general public in uncontrolled SaskPower Sensus Electrical and Gas Meters 8 of 35 APRIL 2013

9 environments. While one cannot draw a full correlation between the two tests as they occurred over different time periods, it is noted that a low level of background emissions are present at the location without the Smart Meter system active. Capture 5 constitutes the measurement of background RF emissions for Test 3. See Section 2 for further details. The aforementioned results are illustrated in the following charts: Test 1: Bank of 6 Sensus Electrical Meters and 4 Sensus Gas Meters Normal Operation on Percent of Uncontrolled SC6 Limit Background Noise Smart Meter Bank and Background Noise Test 2: Bank of 6 Sensus Electrical Meters and 3 Sensus Gas Meters Normal Operation on Percent of Uncontrolled SC6 Limit Background Noise Smart Meter Bank and Background Noise SaskPower Sensus Electrical and Gas Meters 9 of 35 APRIL 2013

10 2.500 Test 3: Bank of 6 Sensus Electrical Meters and 3 Sensus Gas Meters Atypical Operation on Percent of Uncontrolled SC6 Limit Background Noise Smart Meter Bank and Background Noise Percent of Unctonrolled SC6 Limit Comprehensive Test Results With Uncontrolled SC6 Limit Test 1 Test 2 Test 3 Background Noise "Smart Meter" Bank and Background Noise Uncontrolled SC6 Limit SaskPower Sensus Electrical and Gas Meters 10 of 35 APRIL 2013

11 Detailed testing results are provided in Section 8 and illustrated in the following graphs: 100 Test 1: Measured Data versus Time (Normal Operation) : Bank of 6 Sensus Electrical Meters and 4 Sensus Gas Meters Percentage of Uncontrolled Limit (%) :32:03 10:46:03 11:00:03 11:14:03 11:28:03 11:42:03 11:56:03 12:10:03 12:24:03 12:38:03 12:52:03 13:06:03 13:20:03 13:34:03 13:48:03 14:02:03 14:16:03 14:30:03 14:44:03 14:58:03 15:12:03 15:26:03 15:40:03 15:54:03 16:08:03 16:22:03 16:36:03 16:50:03 17:04:03 Time of Day Background Measured Data Uncontrolled Max 100 Test 2: Measured Data versus Time (Normal Operation) : Bank of 6 Sensus Electrical Meters and 3 Sensus Gas Meters Percentage of Uncontrolled Limit (%) :41:22 8:55:22 9:09:22 9:23:22 9:37:22 9:51:22 10:05:22 10:19:22 10:33:22 10:47:22 11:01:22 11:15:22 11:29:22 11:43:22 11:57:22 12:11:22 12:25:22 12:39:22 12:53:22 13:07:22 13:21:22 13:35:22 13:49:22 14:03:22 14:17:22 14:31:22 14:45:22 14:59:22 15:13:22 Time of Day Background Measured Data Uncontrolled Max SaskPower Sensus Electrical and Gas Meters 11 of 35 APRIL 2013

12 100 Test 3: Measured Data versus Time (Atypical Operation) : Bank of 6 Sensus Electrical Meters and 3 Sensus Gas Meters Percentage of Uncontrolled Limit (%) :04:59 16:06:59 16:08:59 16:10:59 16:12:59 16:14:59 16:16:59 16:18:59 16:20:59 16:22:59 16:24:59 16:26:59 16:28:59 16:30:59 16:32:59 16:34:59 16:36:59 16:38:59 16:40:59 16:42:59 16:44:59 16:46:59 16:48:59 16:50:59 16:52:59 16:54:59 16:56:59 16:58:59 17:00:59 17:02:59 Time of Day Background Measured Data Uncontrolled Max The Narda field strength probe uses a frequency shaped head which measures RF emission limits at different frequencies and presents a cumulative total of all emissions as a percentage of Safety Code 6. While this approach provides a very accurate assessment of percentage of Safety Code 6 limit, it is not possible to accurately convert measurements into a power density value at a single frequency due to the presence of background RF sources. However, if it is assumed that all measured emissions originated around 900 MHz, the attained percentage values can be seen as follows: Test Attainment of Uncontrolled SC6 [%] Power Density (µw/cm²) Section 13 of this document presents spectrum analyzer test results for a single electric meter showing peak power density for a meter. This spectrum analyzer result is best compared to the atypical operation test case Test 3 where the electric meters have a transmit duty cycle of ~2.5%. Applying the spectrum analyzer results from Section 13 yields a power density of 14.1 W/cm 2 which is within 7% of the measured results for Test Case Measurement Uncertainty At this time, the Narda unit represents the most accurate broadband, cumulative field metering solution available for RF exposure limit measurements in operational environments. The average emissions measured are below a field strength of V/m, which is the lower limit rating of the Narda unit. At measurements below this level, the accuracy of the results may not be within the tolerance specified in the meter calibration certificate (Section 6) and the results obtained may also include internal noise generated by the Narda meter. It is therefore likely that the emissions from the Sensus Smart Meters are actually lower than those measured in this report. SaskPower Sensus Electrical and Gas Meters 12 of 35 APRIL 2013

13 Changes in operational and test environment may cause a change in RF fields as a result of reflections. In the majority of environment these reflections are time varying and a therefore represented in the averages levels measured. In the event that these reflections are not time varying and the meter was placed at a minima, a factor of 2.56 would be applied. The tables below repeats provides the test results including a factor for uncertainty. Test Type Attainment of Uncontrolled SC6 [%] Including Uncertainty Factor Conclusion: RF Emissions 1 Normal more than 67 times less than Health Canada's limits 2 Normal more than 79 times less than Health Canada's limits 3 Atypical more than 17 times less than Health Canada's limits Next Steps and Required Remedial Actions No remedial actions are required. SaskPower Sensus Electrical and Gas Meters 13 of 35 APRIL 2013

14 2 Measurement Procedure 2.1 Description of Procedure Used Field measurements used to determine conformity with the limits specified by Safety Code 6 are performed with the field sensor (probe) placed approximately twenty centimetres away from any object or person with measurements averaged over six minutes as per SC 6. Measurements were taken on six separate occasions: Capture Start Time Stop Time Reference Description :32: :11:03 Test 1 Ten Sensus meters installed and active (six electrical, four gas). Four hundred minute test period. Normal operation :51: :30:14 Test 1 No meters present. Background RF measurements collected. Four hundred minute test period :37: :16:14 Test 2 No meters present. Background RF measurements collected. Four hundred minute test period :41: :20:22 Test 2 Nine Sensus meters installed and active (six electrical, three gas). Four hundred minute test period. Normal Operation :05: :04:14 Test 3 No meters present. Background RF measurements collected. Sixty minute test period :04: :03:59 Test 3 Nine Sensus meters installed and active (six electrical, three gas). Sixty minute test period. Atypical Operation rarely utilized. The aforementioned measurements were collected 20 cm from the meter bank. Each test focused on collecting either four hundred samples or sixty samples over the duration of the test. The probe was located in a position to receive maximum emissions from the Smart Meter bank (i.e. at an elevation of approximately 1.8m and centered in front of the meter bank), as shown in Section 3. RF Field strengths measured included all active transmitters. This includes the meter bank under test as well any RF emitting devices in the vicinity of SaskPower s STC AMI Lab. The results of the data capture periods explained above are assembled into three tests where the environment is evaluated for Safety Code 6 conformity. These tests are described as follows: Test 1: A bank of six Sensus electrical meters, and four Sensus gas meters were tested under normal operation. This test was conducted for a period of four hundred minutes. The Narda SC 6 test meter was allowed to log measurements undisrupted for the duration of the test. RF Transactions from all Smart Meters in the vicinity of the test location were simultaneously logged for activity. Data from Capture 1 and Capture 2 were compared to determine the difference in RF exposure in an environment featuring a number of Smart Metering devices, versus the same environment without Smart Metering devices. Test 2: This test repeats the procedures of Test 1 with the exception that only three Sensus gas meters were present during the test period. Data from Capture 3 and Capture 4 were compared to determine the difference in RF exposure in an environment featuring a number of Smart Metering devices, versus the same environment without Smart Metering devices. Referring to Section 1.4.1, the gas meter with FlexNet ID was not present during this test. Otherwise, all other meters were present and operational. SaskPower Sensus Electrical and Gas Meters 14 of 35 APRIL 2013

15 Test 3: As noted above, Test #3 represents a rarely used test and diagnostic mode. A bank of six Sensus electrical meters, and three Sensus gas meters were tested under atypical operation. This test was conducted for a period of sixty minutes. The behaviour of the Smart Meters is deemed atypical for the following reason. For the duration of the test, four Smart Meters were repeatedly pinged, via RF, with a request for each meter to report its current data. These four meters would immediately begin transmitting back to the closest base station for reporting purposes. By manipulating the Smart Meters in this way, an extremely high duty cycle for RF transmission was obtainable. For comparison, RF activity from the meter bank, during Test 3, was greater than 27 times higher than what was observed during Test 1 under normal operating conditions. Additionally, RF activity from the meter bank, during Test 3, was greater than 128 times higher than what was observed during Test 2 under normal operating conditions. The following four meters, identified by FlexNet ID, were subject to repeated pings for the duration of the test: See Section 4 for RF transaction records from each test. The Narda SC 6 test meter was allowed to log measurements undisrupted for the duration of the test. RF Transactions from all Smart Meters in the vicinity of the test location were simultaneously logged for activity. Data from Capture 5 and Capture 6 were compared to determine the difference in RF exposure in an environment featuring a number of Smart Metering devices, versus the same environment without Smart Metering devices. Referring to Section 1.4.1, the gas meter with FlexNet ID was not present during this test. Otherwise, all other meters were present and operational. SaskPower Sensus Electrical and Gas Meters 15 of 35 APRIL 2013

16 2.2 Test Equipment Description Meter Narda NBM 550 Serial #: B 0670 Calibration due: Probe Narda EC5091 Serial #: Calibration due: The following list of parameters was downloaded from the meter and was used as the basis of the testing: Device Product Name NBM 550 Device Serial Number B 0670 Device Cal Due Date 4/21/2013 Probe Product Name EC5091 Probe Serial Number Probe Cal Due Date 4/25/2013 Probe Field Type E Probe Connection Type C Probe Lower Frequency Limit A 300 khz Probe Upper Frequency Limit A 50 GHz Probe Lower Frequency Limit B 300 khz Probe Upper Frequency Limit B 50 GHz Probe Emin A V/m Probe Emax A V/m Probe Emin B V/m Probe Emax B V/m Shaped Probe YES Standard ID 5 Standard Name Canada,occ Apply Standard ON Frequency 2.45 GHz Apply Correction Frequency OFF Eref_E(f) V/m Eref_H(f) V/m Combi Probe Use E Unit V/m Results Format FIXED SaskPower Sensus Electrical and Gas Meters 16 of 35 APRIL 2013

17 3 Site Plan and Photographs 1 1) A drawing of SaskPower s STC AMI Lab. The placement of the Narda SC 6 Test Meter with respect to SaskPower s Smart Meter bank is seen. SaskPower Sensus Electrical and Gas Meters 17 of 35 APRIL 2013

18 ) Capture 1 being performed in front of SaskPower s Smart Meter test bank. Six Smart Meters are seen immediately behind the Narda SC 6 test meter. 3) A second view of Capture 1 being performed in front of SaskPower s Smart Meter bank. The offset of the Narda SC 6 test meter from SaskPower s Smart Meters is seen. 4) A third view of Capture 1 being performed in front of SaskPower s Smart Meter bank. Three gas meters are seen installed below the electrical meter bank. A fourth gas meter is seen on the floor, immediately to the north of the Narda SC 6 test meter. 5) Background RF measurements being collected. It is seen that the Smart Meters have been removed from their positions in the meter bank. This image encompasses the test setup for Capture 2, Capture 3 and Capture 5. 6) Additional testing being conducted in front of SaskPower s Smart Meter bank. This image depicts the test setup for Capture 4 and Capture 6. SaskPower Sensus Electrical and Gas Meters 18 of 35 APRIL 2013

19 4 Traffic Confirmation SaskPower Meter Bank To confirm that all meters were active and transmitting during the test period, an external packet sniffer was used to verify traffic levels. Additionally, logs were retrieved from the system s RNI (Radio Network Interface) as a comprehensive source of all traffic that were transmitted by the meters under test. Note that this information only shows how often the Smart Meters are active during the recording period. Verbose logs further show the type of data being transmitted. These graphs are not an indicator of the transmitter power output. 16 Test 1: Meter RF Transactions versus Time (Normal Operation) : Bank of 6 Sensus Electrical Meters and 4 Sensus Gas Meters Number of RF Transactions During Sample Period :32:03 10:46:03 11:00:03 11:14:03 11:28:03 11:42:03 11:56:03 12:10:03 12:24:03 12:38:03 12:52:03 13:06:03 13:20:03 13:34:03 13:48:03 14:02:03 14:16:03 14:30:03 14:44:03 14:58:03 15:12:03 15:26:03 15:40:03 15:54:03 16:08:03 16:22:03 16:36:03 16:50:03 17:04:03 Time of Day RF Transactions 16 Test 2: Meter RF Transactions versus Time (Normal Operation) : Bank of 6 Sensus Electrical Meters and 3 Sensus Gas Meters Number of RF Transactions During Sample Period :41:22 8:55:22 9:09:22 9:23:22 9:37:22 9:51:22 10:05:22 10:19:22 10:33:22 10:47:22 11:01:22 11:15:22 11:29:22 11:43:22 11:57:22 12:11:22 12:25:22 12:39:22 12:53:22 13:07:22 13:21:22 13:35:22 13:49:22 14:03:22 14:17:22 14:31:22 14:45:22 14:59:22 15:13:22 Time of Day RF Transactions SaskPower Sensus Electrical and Gas Meters 19 of 35 APRIL 2013

20 16 Test 3: Meter RF Transactions versus Time (Atypical Operation) : Bank of 6 Sensus Electrical Meters and 3 Sensus Gas Meters Number of RF Transactions During Sample Period :04:59 16:06:59 16:08:59 16:10:59 16:12:59 16:14:59 16:16:59 16:18:59 16:20:59 16:22:59 16:24:59 16:26:59 16:28:59 16:30:59 16:32:59 16:34:59 16:36:59 16:38:59 16:40:59 16:42:59 16:44:59 16:46:59 16:48:59 16:50:59 16:52:59 16:54:59 16:56:59 16:58:59 17:00:59 17:02:59 Time of Day RF Transactions 5 NBM 550 Calibration Certificate SaskPower Sensus Electrical and Gas Meters 20 of 35 APRIL 2013

21 6 EC5091 Calibration Certificate SaskPower Sensus Electrical and Gas Meters 21 of 35 APRIL 2013

22 7 Field Probe Log Files Ten Meters Installed (Normal Operation): Capture 1 Note: All average values are presented relative to Health Canada Safety Code 6 s controlled environments. These are multiplied by a factor of 5 to convert to Health Canada Safety Code 6 values for uncontrolled environments (Public Levels). The scaled uncontrolled environment values are used in this report. Index Date/Time Avg (E Field) [% STD] 1 3/26/ :32: /26/ :38: /26/ :44: /26/ :50: /26/ :56: /26/ :02: /26/ :08: /26/ :14: /26/ :20: /26/ :26: /26/ :32: /26/ :38: /26/ :44: /26/ :50: /26/ :56: /26/ :02: /26/ :08: /26/ :14: /26/ :20: /26/ :26: /26/ :32: /26/ :38: /26/ :44: /26/ :50: /26/ :56: /26/ :02: /26/ :08: /26/ :14: /26/ :20: /26/ :26: /26/ :32: /26/ :38: /26/ :44: /26/ :50: /26/ :56: /26/ :02: /26/ :08: SaskPower Sensus Electrical and Gas Meters 22 of 35 APRIL 2013

23 38 3/26/ :14: /26/ :20: /26/ :26: /26/ :32: /26/ :38: /26/ :44: /26/ :50: /26/ :56: /26/ :02: /26/ :08: /26/ :14: /26/ :20: /26/ :26: /26/ :32: /26/ :38: /26/ :44: /26/ :50: /26/ :56: /26/ :02: /26/ :08: /26/ :14: /26/ :20: /26/ :26: /26/ :32: /26/ :38: /26/ :44: /26/ :50: /26/ :56: /26/ :02: SaskPower Sensus Electrical and Gas Meters 23 of 35 APRIL 2013

24 8 Field Probe Log Files Background Noise (No meters present): Capture 2 Note: All average values are presented relative to Health Canada Safety Code 6 s controlled environments. These are multiplied by a factor of 5 to convert to Health Canada Safety Code 6 values for uncontrolled environments (Public Levels). The scaled uncontrolled environment values are used in this report. Index Date/Time Avg (E Field) [% STD] 1 3/26/ :51: /26/ :57: /26/ :03: /26/ :09: /26/ :15: /26/ :21: /26/ :27: /26/ :33: /26/ :39: /26/ :45: /26/ :51: /26/ :57: /26/ :03: /26/ :09: /26/ :15: /26/ :21: /26/ :27: /26/ :33: /26/ :39: /26/ :45: /26/ :51: /26/ :57: /26/ :03: /26/ :09: /26/ :15: /26/ :21: /26/ :27: /26/ :33: /26/ :39: /26/ :45: /26/ :51: /26/ :57: /26/ :03: /26/ :09: /26/ :15: /26/ :21: /26/ :27: SaskPower Sensus Electrical and Gas Meters 24 of 35 APRIL 2013

25 38 3/26/ :33: /26/ :39: /26/ :45: /26/ :51: /26/ :57: /26/ :03: /26/ :09: /26/ :15: /26/ :21: /26/ :27: /26/ :33: /26/ :39: /26/ :45: /26/ :51: /26/ :57: /26/ :03: /26/ :09: /26/ :15: /26/ :21: /26/ :27: /26/ :33: /26/ :39: /26/ :45: /26/ :51: /26/ :57: /27/2013 0:03: /27/2013 0:09: /27/2013 0:15: /27/2013 0:21: SaskPower Sensus Electrical and Gas Meters 25 of 35 APRIL 2013

26 9 Field Probe Log Files Background Noise (No meters present): Capture 3 Note: All average values are presented relative to Health Canada Safety Code 6 s controlled environments. These are multiplied by a factor of 5 to convert to Health Canada Safety Code 6 values for uncontrolled environments (Public Levels). The scaled uncontrolled environment values are used in this report. Index Date/Time Avg (E Field) [% STD] 1 3/27/2013 0:37: /27/2013 0:43: /27/2013 0:49: /27/2013 0:55: /27/2013 1:01: /27/2013 1:07: /27/2013 1:13: /27/2013 1:19: /27/2013 1:25: /27/2013 1:31: /27/2013 1:37: /27/2013 1:43: /27/2013 1:49: /27/2013 1:55: /27/2013 2:01: /27/2013 2:07: /27/2013 2:13: /27/2013 2:19: /27/2013 2:25: /27/2013 2:31: /27/2013 2:37: /27/2013 2:43: /27/2013 2:49: /27/2013 2:55: /27/2013 3:01: /27/2013 3:07: /27/2013 3:13: /27/2013 3:19: /27/2013 3:25: /27/2013 3:31: /27/2013 3:37: /27/2013 3:43: /27/2013 3:49: /27/2013 3:55: /27/2013 4:01: /27/2013 4:07: /27/2013 4:13: SaskPower Sensus Electrical and Gas Meters 26 of 35 APRIL 2013

27 38 3/27/2013 4:19: /27/2013 4:25: /27/2013 4:31: /27/2013 4:37: /27/2013 4:43: /27/2013 4:49: /27/2013 4:55: /27/2013 5:01: /27/2013 5:07: /27/2013 5:13: /27/2013 5:19: /27/2013 5:25: /27/2013 5:31: /27/2013 5:37: /27/2013 5:43: /27/2013 5:49: /27/2013 5:55: /27/2013 6:01: /27/2013 6:07: /27/2013 6:13: /27/2013 6:19: /27/2013 6:25: /27/2013 6:31: /27/2013 6:37: /27/2013 6:43: /27/2013 6:49: /27/2013 6:55: /27/2013 7:01: /27/2013 7:07: SaskPower Sensus Electrical and Gas Meters 27 of 35 APRIL 2013

28 10 Field Probe Log Files Nine Meters Installed (Normal Operation): Capture 4 Note: All average values are presented relative to Health Canada Safety Code 6 s controlled environments. These are multiplied by a factor of 5 to convert to Health Canada Safety Code 6 values for uncontrolled environments (Public Levels). The scaled uncontrolled environment values are used in this report. Index Date/Time Avg (E Field) [% STD] 1 3/27/2013 8:41: /27/2013 8:47: /27/2013 8:53: /27/2013 8:59: /27/2013 9:05: /27/2013 9:11: /27/2013 9:17: /27/2013 9:23: /27/2013 9:29: /27/2013 9:35: /27/2013 9:41: /27/2013 9:47: /27/2013 9:53: /27/2013 9:59: /27/ :05: /27/ :11: /27/ :17: /27/ :23: /27/ :29: /27/ :35: /27/ :41: /27/ :47: /27/ :53: /27/ :59: /27/ :05: /27/ :11: /27/ :17: /27/ :23: /27/ :29: /27/ :35: /27/ :41: /27/ :47: /27/ :53: /27/ :59: /27/ :05: /27/ :11: /27/ :17: SaskPower Sensus Electrical and Gas Meters 28 of 35 APRIL 2013

29 38 3/27/ :23: /27/ :29: /27/ :35: /27/ :41: /27/ :47: /27/ :53: /27/ :59: /27/ :05: /27/ :11: /27/ :17: /27/ :23: /27/ :29: /27/ :35: /27/ :41: /27/ :47: /27/ :53: /27/ :59: /27/ :05: /27/ :11: /27/ :17: /27/ :23: /27/ :29: /27/ :35: /27/ :41: /27/ :47: /27/ :53: /27/ :59: /27/ :05: /27/ :11: SaskPower Sensus Electrical and Gas Meters 29 of 35 APRIL 2013

30 11 Field Probe Log Files Background Noise (No meters present): Capture 5 Note: All average values are presented relative to Health Canada Safety Code 6 s controlled environments. These are multiplied by a factor of 5 to convert to Health Canada Safety Code 6 values for uncontrolled environments (Public Levels). The scaled uncontrolled environment values are used in this report. Index Date/Time Avg (E Field) [% STD] 1 3/27/2013 7:05: /27/2013 7:11: /27/2013 7:17: /27/2013 7:23: /27/2013 7:29: /27/2013 7:35: /27/2013 7:41: /27/2013 7:47: /27/2013 7:53: /27/2013 7:59: SaskPower Sensus Electrical and Gas Meters 30 of 35 APRIL 2013

31 12 Field Probe Log Files Nine Meters Installed (Atypical Operation): Capture 6 Note: All average values are presented relative to Health Canada Safety Code 6 s controlled environments. These are multiplied by a factor of 5 to convert to Health Canada Safety Code 6 values for uncontrolled environments (Public Levels). The scaled uncontrolled environment values are used in this report. Index Date/Time Avg (E Field) [% STD] 1 3/27/ :04: /27/ :10: /27/ :16: /27/ :22: /27/ :28: /27/ :34: /27/ :40: /27/ :46: /27/ :52: /27/ :58: SaskPower Sensus Electrical and Gas Meters 31 of 35 APRIL 2013

32 13 Spectrum Analyzer Plots In addition to the above tests conducted with the Nada NBM550 meter and shaped probe, additional measurements were conducted using a Rohde and Schwarz FSH8 spectrum analyzer coupled to a Mobile Mark antenna, model number SMW-UMB-1HDHE2HF. This antenna has a gain on 2 dbi across the band 800MHz to 2700 MHz. Measurements were conducted at a distance of 20 cm, 100 cm, and 300 cm from a single electrical Sensus meter. Transmissions from the gas Sensus meter occurred too infrequently to capture on a spectrum analyzer. It should be noted that all measurements using the spectrum analyzer show the maximum signal level, and that this signal is only present for a very small portion of the time. Analysis of the waveforms shows that a typical transmission has a duration of less than s. 20 cm Measurement Distance SaskPower Sensus Electrical and Gas Meters 32 of 35 APRIL 2013

33 The meter transmission is shown in the center of the screenshot as is identified by Marker 1 (M1). The other peaks captured by the spectrum analyzer are signals within the band which are being transmitted by external devices which are not part of the test configuration (i.e. background signals). At 20 cm this meter signal has a peak level of -20 dbm, or 0.01 Watts. The power of the signal, as measured across a 2 MHz bandwidth was dbm, or Watts. This measurement relates to an instantaneous power density level of 0.94 W/m 2. Again it is noted that this level is only present for s during any transmission. The results from this test can be compared to those of Test #3 (atypical meter is diagnostic/test mode). In test #3, 6 meters were transmitting at a rate of 1 transmission per second, for a cumulative transmission time of 0.15 s every second. Using the peak, instantaneous power density of 0.94 W/m 2, and a cumulative transmission time of 0.15 s, results in an average power density of 0.14 W/m2. This level equates to 2.2% of the Safety Code 6 limit for uncontrolled environments. It is noted that this is the same value that was measured with the Narda NBM550 meter and EC5091 shaped probe. 100 cm Measurement Distance SaskPower Sensus Electrical and Gas Meters 33 of 35 APRIL 2013

34 The meter transmission is shown in the center of the screenshot as is identified by Marker 1 (M1). At 100 cm distance this signal has a peak level of dbm, or Watts. The power of the signal, as measured across a 2 MHz bandwidth was dbm, or Watts. This measurement relates to an instantaneous power density level of 0.03 W/m 2. Again it is noted that this level is only present for s during any transmission. 300 cm Measurement Distance The meter transmission is shown in the center of the screenshot as is identified by Marker 1 (M1). At 300 cm distance this signal has a peak level of dbm, or Watts. The power of the signal, as measured across a 2 MHz bandwidth was dbm, or Watts. This measurement relates to an instantaneous power density level of W/m 2. Again it is noted that this level is only present for s during any transmission. Comparison with other Background Signals The following spectrum analyzer screen capture shows the Sensus meter signal (at 300 cm distance) as compared to other RF signals which may be present in typical customer environment. SaskPower Sensus Electrical and Gas Meters 34 of 35 APRIL 2013

35 The capture above shows an expanded frequency range, which the Sensus meter indicated by Marker 2 (M2). Broadcast FM transmitters, approximately 6.6 km distant from the indoor measurement location are shown by Marker 1 (M1), with a typical residential Wi-Fi signal shown by Marker 3 (M3). The Wi-Fi transmitter was approximately 450 cm from the measurement location. As can be seen the peak Sensus meter levels are 10 times lower than FM broadcast radios present inside a building 6.6 km distant from the FM broadcast site. The meter levels are approximately 5 times lower than those found near a standard residential Wi-Fi access point. SaskPower Sensus Electrical and Gas Meters 35 of 35 APRIL 2013