3M Ground Pro Ground Integrity Meter

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3M Ground Pro Ground Integrity Meter Model CTM051 User s Guide

3M Ground Pro Ground Integrity Meter Model CTM051 Safety Information Read, understand, and follow all safety information contained in these user instructions prior to use of the 3M Ground Pro Ground Integrity Meter Model CTM051. Retain these user instructions for future reference. EXPLANATION OF SIGNAL WORD CONSEQUENCES WARNING: CAUTION: NOTICE: Indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury and/or property damage. Indicates a potentially hazardous situation, which, if not avoided, may result in minor or moderate injury and/or property damage. Indicates a potentially hazardous situation, which, if not avoided, may result in property damage. 1

WARNING To reduce the risks associated with environmental contamination: When working with the automated equipment, always observe safety precautions as recommended by equipment manufacturer and your company s practices CAUTION To reduce the risks associated with environmental contamination: Dispose of the monitor in accordance with local, state, and federal regulations NOTICE To reduce the risks associated with property damage: Periodically check that the indicator is functioning properly FCC This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. Industry Canada This Class A digital apparatus complies with Canadian ICES-003. 2

The 3M Ground Pro Ground Integrity Meter is a comprehensive instrument that measures the ground connection of your equipment in accordance with ANSI 6.1 and ANSI/ESDA S.20.20 standards. In addition to measuring ground impedance, it also measures AC and DC voltage on the ground as well as the presence of high-frequency noise or electromagnetic interference (EMI) on the ground, alerting you to possible functionality problems, such as tool lockups, erratic behavior and parametric errors. Controls and Indicators P ower C Turns the power on and off. Hold for a few seconds to turn the unit off. Also resets some parameters. Ohms Switches the unit into impedance measurement mode. EMI Switches the unit into high-frequency noise (EMI) measurement mode. Switches the unit into AC and DC voltage measurement mode. Ref. Sets up the reference for measurements and alarms. Hold Freezes the display/and shows the maximum measured value. Adjusts the scale for some parameters and adjusts reference values. Display backlight on/off 3

Brief Tour of your 3M Ground Pro Ground Integrity Meter Please refer to the rest of this User s Guide for detailed explanations of each control, indicator and connection. Banana Jacks Keypad Display Battery Compartment (on the back) 4

Overview The 3M Ground Pro Ground Integrity Meter measures several important parameters of ground integrity: ground impedance, voltage, and high-frequency noise (EMI) on a ground. Ground connectivity is measured in accordance with ANSI 6.1, ANSI/ESDA S.20.20 and other standards. More specifically, it is measured as AC impedance in a way that is immune to parasitic voltages and currents on a ground. In addition to monitoring the ground connection, the Ground Pro measures highfrequency voltage (EMI) on the ground that is often present in a factory environment. Such interference causes problems with the operation of equipment. The Ground Pro also measures AC and DC voltage on the ground in case of miswiring. General Power Ground Pro uses a 9 alkaline battery. Do not use any other battery. If you are not using your Ground Pro for an extended period of time, remove the battery from the unit in order to prevent damage caused by a possible battery leakage. Note: Not all batteries labeled similarly have the same performance. Often an offbrand alkaline battery has only 50% to 60% of the capacity of the leading brand-name battery. Installing the Battery Slide off the battery door at the back of the Ground Pro and attach the 9 battery to the battery clips. Observe the polarity of the battery. Re-install the battery door. 5

Low-Battery Indicator When battery voltage gets low (less than 20% capacity remains), the low battery indicator on the display appears. At this point it is a good idea to install a new battery to assure optimal performance. Turning Unit On and Off 6 Low-Battery Indication P ower C ON Press the Power/C button. The battery voltage will be displayed for a moment in both volts and percentage of the full capacity. If the battery voltage is too low even to indicate low-voltage status on the display or if the self-diagnostic fails, you will hear a beep and the unit will shut itself off. If the battery is completely dead, there may not even be a beep. Please replace the battery. OFF Press the Power/C button for at least two seconds. The 3M Ground Pro Ground Integrity Meter will turn off. F Automatic Power Off In order to save battery life, the Ground Pro has an automatic power-off (APO) feature that will turn off the Ground Pro off after approximately 10 minutes if no buttons are pressed. You can disable or enable APO by depressing the F button several times until you get to the screen shown to the right. You can then enable or disable APO using the Up and Down arrow buttons. Please keep in mind that with APO disabled, the battery life will be shorter. Checking the Battery oltage Press the F button several times until you get to the following screen. The upper display shows the battery voltage, and the lower display shows the percentage of usable battery life left. 0 2 Lin 4 6 F % 6

Impedance Measurements Ohms Depress the Ohms button to go into ground impedance mode. You should see a screen similar to the one shown on the right. The impedance mode is indicated by OH on the bottom display line. Scaling Impedance Screen The 3M Ground Pro Ground Integrity Meter has four different scales for measuring ground impedance. Choose the appropriate scale for your measurements using the Up and Down arrow buttons. Ohms X.XXX Ohms X.XX Ohms XX.X Ohms XXXOhms 6 8 Auto-Zeroing Test Leads F Test leads offer added impedance and may alter measurement results, especially at a lower scale. In order to take impedance of test leads into account, short the ends of the test leads together and depress the Function button (F) until you see the screen shown on the right. In a few seconds, this screen will disappear and you will hear a short beep. The Ground Pro will return to normal measurement mode. Now when the test leads are shorted together, the display should show zero Ohms, even though the test leads may have some impedance. The correction factor will be saved in nonvolatile memory. 6 7

If the test leads are not shorted properly or become accidentally disconnected during this process, auto-zero will fail and you should hear a long beep before the display returns to the impedance measurement screen. In this case you will need to repeat this process again. oltage Measurements The presence of voltage on a ground is never desirable. The 3M Ground Pro Ground Integrity Meter can measure both AC and DC voltages on a ground. AC oltage Press the button once. The Ground Pro will switch to AC voltage measurement mode and you should see a screen similar to one on the right. You can adjust the measurement scale using the Up and Down arrow buttons. DC oltage Press the button again to switch to DC voltage measurement mode. You should see a screen similar to the one on the right. As in AC mode, you can adjust the measurement scale using the Up and Down arrow buttons. Overload If voltage on the ground is above the maximum level on a particular scale, you should see an overload indicator such as the one on the right. In such a case, go to the next scale using the Up arrow button. 6 8 10 8

Using Reference with oltage Measurements Using Reference with Impedance Measurements Ohms The Reference function helps to set limits at which an audio alarm sounds to indicate that the measured impedance is below the specified limit. Unlike a regular multimeter, the 3M Ground Pro Ground Integrity Meter allows you to specify an exact impedance value at which the instrument will provide an audio indication. In Impedance mode, depress the Ref. button. You should see a screen similar to the one on the right with the REF indicator on. The top line of the display shows the current impedance value (in this example it is an open circuit) and the bottom line shows the reference level. Adjust the reference level by using the Up and Down arrow buttons. Now when the impedance is below the reference value, you should hear a beep. The reference value is set for a particular range - you may need to readjust it for a different range. The reference value will be saved in the internal non-volatile memory. Ref 6 8 10 REF 4 6 8 10 Normal measurements screen Impedance in Ohms Threshold 9

EMI Measurements High frequency noise (EMI) on a ground causes equipment malfunction and damage to sensitive components. The 3M Ground Pro Ground Integrity Meter measures high-frequency noise on a ground in a EMI wide frequency and AG PEAK dynamic range. High-frequency noise is measured in two different units volts and Peak EMI in Average EMI in Relative peak value AG PEAK dbu. The latter is a db µ logarithmic measure Peak EMI in dbu of voltage where 0dB Average EMI in dbu db µ is referenced to 1u. Relative peak value In order to measure EMI on a ground, press the EMI button. The screen will show the average value of the high-frequency signal in olts on the top display line and the magnitude of the envelope peak of the signal (i.e. transients or spikes) on the bottom line. By pressing the EMI button one more time you can switch to dbu units, as shown above. Autoscale The Ground Pro uses autoscaling in EMI mode no scale switching is necessary. 10

Using Reference with EMI Reference mode is helpful if you wish to EMI hear an audio alarm whenever the EMI Ref. signal exceeds a certain level. In order to use this mode, depress the REF button while in any of the EMI screens. You should see the REF indicator at the top of the display. AG PEAK Normal measurements screen The bottom line of the display will now show the reference value of the average signal instead of the peak value of the signal. AG PEAK Peak value Adjust the reference level using the Up and Down arrow buttons. Now whenever the 4 average value of the EMI signal exceeds this reference level, an audio alarm will sound. By depressing the REF button again, you REF AG Average value can adjust the reference level for the peak signal as shown on the right. 4 Hold Function Pressing the Hold button once while in any measurement mode will cause the 3M Ground Pro Ground Integrity Meter to enter the Hold mode. The display will freeze, Hold AG PEAK Normal measurements screen showing the value at the moment the button was pressed. Pressing the Hold button HOLD AG PEAK a second time the display will show the maximum value of the signal accumulated from the moment of pressing the button. Screen is frozen Please note that if you power down the Ground Pro while in any of these modes, it will collect the maximum value of the HOLD MAX AG PEAK Max. signal values are shown measured parameter for as long as this mode 11

is active. Please note that if you power down the 3M Ground Pro Ground Integrity Meter while in any of these modes, it will remain in the same mode when the unit is powered up again. Pressing the Hold button one more time puts the Ground Pro back into regular mode. Specifications Impedance Range EMI (noise on ground) Bandwidth Measurement Range Measurement Type oltage on Ground AC (50 500 Hz) DC 0.001 1.999 Ohms Automatic auto-zero for test leads 9kHz 450MHz 80 dbu 140 dbu 10 m 10 RMS Average Envelope Peak 0.001 270 RMS 0.001 400 Reference Individual reference setting for each parameter Hold Hold, Hold Max General Power Battery 9 Alkaline Dimensions (approx.) 4.5 x 3.6 x 1.1 114 mm x 92 mm x 28 mm All specifications are subject to change without notice. 12

3M Ground Pro Ground Integrity Meter Model CTM051 Regulatory Information China RoHS Electronic Industry Standard of the People s Republic of China, SJ/T11363-2006, Requirements for Concentration Limits for Certain Hazardous Substances in Electronic Information Products This symbol, per Marking for the Control of Pollution Caused by Electronic Information Products, SJ/T11364-2006, means that the product or part does contain a substance, as detailed in the chart below, in excess of the following maximum concentration values in any homogeneous material: (a) 0.1% (by weight) for lead, mercury, hexavalent chromium, polybrominated biphenyls or polybrominated diphenyl ethers; or (b) 0.01% (by weight) for cadmium. Unless otherwise stated by 3M in writing, this information represents 3M s best knowledge and belief based upon information provided by third party suppliers to 3M. This numerical reference should not be construed as a representation regarding the product s life or an extension of a product warranty. In the event any product is proven not to conform with 3M s Regulatory Information Sheet, then 3M s entire liability and buyer s exclusive remedy, will be at 3M s option either: (i) replacement of product with a conforming product, or (ii) refund of the purchase price paid by buyer for each nonconforming product, within a reasonable time after written notification of said nonconformance and return of said product to 3M. 3M shall not under any circumstances be liable for direct, incidental, special, or consequential damages (including but not limited to loss of profits, revenue, or business) related to or arising out of this certification, including, the use, misuse or inability to use the product. Unless stated otherwise in writing, the foregoing language cannot be waived, modified, or supplemented in any manner whatsoever. 13

产品中有毒有害物质或元素的名称及含量 Name and Content of Hazardous Substances or Elements 部件名称 (Part or Component Name) 电容引脚 (Termination in capacitor) 电位器中的电阻油墨 (Resistor ink in potentiometer) 二极管焊接部 (Solder in diode) 二极管电镀 (Finish in diode) 印刷电路板焊盘 / 安装孔 (Terminations in PCBs) 电阻引脚 (Terminations in resistors) 电阻电镀部 (Plating in resistors) 连接器 (Connector) 三极管 (Transistor) 电感器 (Inductor) 电磁干扰滤波器 (EMI filter) 装置的焊接部 (Solder in instrument) IC 焊接部 (Solder in IC) 铅 (Pb) 汞 (Hg) 有毒有害物质或元素 (Hazardous Substances or Elements) 镉 (Cd) 六价铬 (Cr(I)) 多溴联苯 (PBB) 多溴二苯醚 (PBDE) 14

部件名称 (Part or Component Name) 蜂鸣器焊接部 (Solder in buzzer) 音频插孔 (Audio jack) 铅 (Pb) 汞 (Hg) 有毒有害物质或元素 (Hazardous Substances or Elements) 镉 (Cd) 六价铬 (Cr(I)) 多溴联苯 (PBB) 多溴二苯醚 (PBDE) : 表示该有毒有害物质在该部件所有均质材料中的含量均在 SJ/T11363-2006 标准规定的限量要求以下 (Indicates that this hazardous substance contained in all of the homogeneous materials for this part is below the limit requirement in SJ/T11363-2006.) : 表示该有毒有害物质至少在该部件的某一均质材料中的含量超出 SJ/T11363-2006 标准规定的限量要求 (Indicates that this hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement in SJ/T11363-2006.) 3M is a trademark of 3M Company. Important Notice All statements, technical information, and recommendations related to 3M s products are based on information believed to be reliable, but the accuracy or completeness is not guaranteed. Before using this product, you must evaluate it and determine if it is suitable for your intended application. You assume all risks and liability associated with such use. Any statements related to the product which are not contained in 3M s current publications, or any contrary statements contained on your purchase order shall have no force or effect unless expressly agreed upon, in writing, by an authorized officer of 3M. Warranty; Limited Remedy; Limited Liability. This product will be free from defects in material and manufacture for a period of one (1) year from the time of purchase. 3M MAKES NO OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the warranty period stated above, your exclusive remedy shall be, at 3M s option, to replace or repair the 3M product or refund the purchase price of the 3M product. Except where prohibited by law, 3M will not be liable for any indirect, special, incidental or consequential loss or damage arising from this 3M product, regardless of the legal theory asserted. Electronics Solutions Division Static Control Products 6801 River Place Blvd. Austin, TX 78726-9000 866-722-3736 www.3mstatic.com Please recycle. Printed in U.S.A. 3M 2009. All rights reserved. 78-9100-6154-4