HiSeasNet Maintenance Visit Report (Template dated 13 November 2007)

Transcription

1 HiSeasNet Maintenance Visit Report (Template dated 13 November 2007) Page 1 Ship Visited: Ship Location/Port: R/V Oceanus Woods Hole, Massachusetts Date(s) of work: 23, 24 June 2008 Work performed by: Visit Purpose: Karl Kapusta 6006 Repair and general maintenance

2 Page 2 Maintenance Checklist Antenna Equipment (ignore SeaTel/Ship-specific points with * for fixed antennas) Initials Action otes/discussion Inspect or change air conditioner filter N/A No air conditioner installed Verify air conditioner is in working order, repair as needed N/A No Air Conditioner is installed Confirm/Set final air conditioner temperature set point (85 deg F) Take photo of dome interior or main antenna support Take photo of rack gear front Take photo of rack gear rear Perform SeaTel or Vertex service bulletin upgrades/repairs Vertical Isolator repairs completed with Seatel supplied components Inspect reflector, repair as needed Inspect antenna equipment/frame/cowls for water, rust, or damage, repair as needed N/A Antenna is in good condition Lube/grease/treat any joints as necessary N/A Inspect antenna equipment and wiring harness for loose cables, repair as needed All cables tight and secure after repairs were completed Sweep antenna through entire Az and El ranges Verify and record reasonable search limits or safety stops for given location and satellite, adjust as needed Inspect cabling and connectors behind and around rack gear, repair as needed - N/A All cables are tight and secure Take photo of radome exterior * Visual inspection of radome (cracks, abrasions, caulk, leaks, excessive grime, etc.), repair as needed * Visual inspection of radome base, legs, and connection to ship (rust, warping, etc.), repair as needed * Radome is new unit supplied as replacement base is in good condition Check antenna balance, adjust as needed * balance was adjusted after repairs were complete Inspect antenna equipment/frame for loose weights and hardware, repair as needed * all weights are tight and secure

3 Initials Action otes/discussion Verify power level to pedestal/motors * Verify pedestal breaker works, repair as needed * Verify acceptable antenna/controller Power-On Self Test (POST) * Page 3 Record DAC/controller parameters * see attached list Verify DAC parameters are accessible, correct, and saved * Verify that GPS inputs to DAC function (if GPS is operational) * Verify that gyro inputs to DAC function (if gyro is operational) * Verify correct conscan or dishscan settings, adjust as needed * Lat & Long are supplied by GPS antenna mounted on antenna ot Ship s Gyrocompass was temporarily powered off during the maintenance visit Dishscan is operational Verify reasonable blackout zone, adjust as needed * No blackout zone was programmed Check Az/El trim values, correct as needed to get longitude search close * Locate spares kit. Verify completeness of the kit, note missing parts. * Upgrade SeaTel/controller firmware with maintenance releases as necessary * Upgrade old ships with Conscan to Dishscan as needed (Revelle, Melville, and Thompson) * Verify dish will sweep full elevation range of motion (-15 to +115 degrees) physically * Verify dish will sweep full elevation pointing (0-90 degrees) when commanded by DAC * Verify dish will do a full azimuth sweep physically at the lowest physical elevation * Verify dish will do a full azimuth sweep at the lowest pointed elevation when commanded by the DAC * Verify dish frame lines up with and will safely bump against all rubber stops should it reach the end of its range of motion * Locate and test RS-422/RS-232 adapter used with converter, modify pinouts so it is not needed, or verify that it is not needed as is. Note status. * Both values were adjusted after the repairs were completed Spares parts were not available for review Not Required N/A No adaptor is required

4 Initials Action otes/discussion Page 4 Install newest version of RemDAC software and leave a copy with the techs * Codan RF Equipment Initials Action otes/discussion Take photo of converter panel Verify converter is not in an undue alarm state Verify power levels at power supply (48 VDC, and 110 VAC). Record VDC and VAC VAC = 116 ship s UPS system VDC = 48.5 VDC from Comtech modem Inspect RF coax cables and connectors, repair as needed all connecters are in good condition Verify amplifier cooling fan functions Verify amplifier is not being overdriven, correct as needed Locate and test DB-9/MIL serial cable that talks directly to converter Not cable is stored with spare parts Locate spare LNA Not LNB is stored on ship with other spare parts Record settings (include serial number and wattage for amp, serial number for converter, and amplifier output type) BUC s/n F0007 Comtech Modem Equipment Initials Action otes/discussion Verify settings are accessible, correct, and saved Verify modem locks on the correct signal, adjust as needed Visually inspect transmit signal directly for clean signal Verify expected EbNo values for given location Eb/No approx. 9.0 db Record settings Upgrade firmware as necessary (at least Rev 1.30) 570L version Replace 5V PSU power cable if needed N/A

5 Page 5 Cisco Router Equipment Initials Action otes/discussion Verify cables and connectors are snug and screwed in, repair as needed Verify serial cable is a CAB-530MT with Comtech Cisco adapter and modem is in RS-422 mode Verify that green connect light on serial card is lit when modem is locked up Verify router survives a power cycle and can route traffic within 15 minutes of turning on while connected. otify techs that they may want to save router settings!! Rack Equipment Initials Action otes/discussion Inspect rack conditions for proper rack gear cooling, lighting, wiring, etc. (Earth station: Verify lights and A/C work) Check and record rack air conditioner set point No Air Conditioner control is available for adjustment but room is cool and temp controlled Overall Initials Action otes/discussion Take photos of ship/dome placement Check with ship techs/crew for overall impression of equipment performance and possible problem areas Locate spares kit (with help from techs) and verify all SeaTel spares and one LNA exist. Note discrepancies. Verify spectrum analyzer shows proper picture of Tx and Rx carriers Comment on or correct previous maintenance report issues that were pointed out no problems have been reported Checked but LNB is stored with other spare parts

6 Page 6 General otes 1. The repairs on the 6006 antenna were completed during this visit. The repairs included: Replacement of the Radome Replacement of the Front and Rear Azimuth Alignment plates and associated hardware assemblies. Replacement of the Cross Level Motor and the motor mounting bracket assemblies. Re-alignment of the Vertical Isolator assembly Antenna re-balance Test and verify all system parameter settings Antenna functional tests after antenna mounted back on ship pedestal These repairs were required since the original bolts holding the Azimuth alignment plates in place had broken. These bolts hold the AZ Alignment plates hold the reflector and top section of the antenna post in alignment with the base section of the antenna post. The two separate sections of the antenna post are connected by the Vertical Isolator, which functions as a shock absorber between the two as the ship moves under the antenna. 2. The complete, original radome was replaced with a new unit as Seatel expense. The original radome was found to have a screw hole and some surface gouges in the cover section when uncrated in Woods Hole prior to the initial installation. 3. The antenna radome was installed back on the existing ship s pedestal using all new stainless steel hardware. The pedestal is showing some rust but no immediate attention is required. 4. The Home Flag Offset was verified to be 191. This setting is recorded in the attached parameter sheet.

7 RV Oceanus 23, 24 June 2008 Radome Prepared for re-mounting to ship Page 7

8 RV Oceanus 23, 24 June 2008 Radome Placement 1 Page 8

9 RV Oceanus 23,24 June 2008 Radome Placement 2 Page 9

10 RV Oceanus 23, 24 June 2008 Radome Exterior 1 Page 10

11 Page 11 RV Oceanus 23, 24 June 2008 Radome Attachment to Pedestal Base OTE: This is new, replacement radome and new mounting bolts

12 RV Oceanus 23,24 June 2008 Radome Interior 1 Page 12

13 RV Oceanus 23,24 June 2008 Radome Interior 2 Page 13

14 Page 14 RV Oceanus 23, 24 June 2008 Antenna Repair 1 Rear View NOTE: This shows the new, replacement hardware and a new Cross Level mounting bracket, motor, and pulley.

15 Page 15 RV Oceanus 23,24 June 2008 Radome Repair 2 Front View NOTE: This shows the new, replacement hardware including the new alignment plate and alignment bearings.

16 RV Oceanus 23, 24 June 2008 Below Decks Equipment 1 Page 16

17 RV Oceanus 23, 24 June 2008 Below Decks Equipment 2 Page 17

18 RV Oceanus 23,24 June 2008 Below Decks Equipment 3 Page 18

19 Page 19 Final Equipment Configuration/Settings HiSeasNet Satellite Equipment Configuration Ship: R/V Oceanus Date: 23, 24 June, 2008 Location: Woods Hole, MA Satellite: Satmex degrees W Unit Setting Description Setting Display Setting Value Notes SeaTel Digital Antenna Controller (DAC) Model DAC-2200 Antenna system is a model (8 Watt Ku-Band amplifier) Serial Number Firmware 6.00m PCU ver 2.44a AGC (Normal, On signal) 1910 Value when antenna is peaked up on signal AGC (Normal, Off Signal) 1540 Value of noise when antenna is not on satellite Latitude LAT 41 N Woods Hole, MA Longitude LON 70 W Woods Hole, MA Heading HDG Woods Hole, MA Satellite SAT W Atlantic satellite Threshold THRS 1658 Antenna Controller locked to hub carrier Intermediate Frequency L-Band Frequency 1250 MHz Shore-to-ship signal frequency to track BAUD Tone OFF N/A Used for RX systems only Volt Horizontal N/A Used for RX only systems FEC AUTO Sets DAC Tuner card to SCPC mode NID 0000 Used for RX only systems to identify video carriers Azimuth AZ Woods Hole, MA Elevation EL 23.2 Woods Hole, MA Relative Azimuth REL Relative to bow of the ship

20 Page 20 Elevation Trim EL TRIM In 1/10 of a degree Azimuth Trim AZ TRIM 0009 In 1/10 of a degree Auto Threshold AUTO THRESH 0060 In counts Elevation Step Size EL STEP SIZE 0000 Azimuth Step Size AZ STEP SIZE 0000 Step Integral STEP 0000 INTEGRAL Search Increment SEARCH INC 0010 Search Limit SEARCH LIMIT 0100 Search Delay SEARCH 0030 DELAY Sweep Increment SWEEP INC 0000 Factory Use only System Type SYSTEM TYPE 0069 Controller set for auto search upon power failure or system reset Gyro Type GYRO TYPE 0002 Set for NMEA information string from ship's gyrocompass Polarization Angle Type POLANG TYPE 0072 Set for Automatic - used with Linear Polarized feeds Polarization Offset POL OFFSET 0040 Adjusted with Loral for best cross-pol performance Polarization Scale POL SCALE 0090 N/A - not used on circular polarized antennas Azimuth Blackout Limit 1 AZ LIMIT Does not transmit or try to search in the blackout zone Azimuth Blackout Limit 2 AZ LIMIT Does not transmit or try to search in the blackout zone Azimuth Blackout Limit 1 AZ LIMIT Does not transmit or try to search in the blackout zone Azimuth Blackout Limit 2 AZ LIMIT Does not transmit or try to search in the blackout zone Azimuth Blackout Limit 1 AZ LIMIT Does not transmit or try to search in the blackout zone Azimuth Blackout Limit 2 AZ LIMIT Does not transmit or try to search in the blackout zone Transmit Polarity TX POLARITY 0004 Home Flag Offset HFO 0191

21 Page 21 Codan Block Upconverter (BUC) BUC Serial Number 6C40132F0081 BUC Serial number Transmit Frequency TX Freq Converted transmit center frequency Transmit Output Power TX Output PWR 37.5 dbm Actual TX Output Power from the BUC Transmit Attenuation TX Atten 4.0 db Receive Attenuation Rx Atten N/A N/A RX level controlled by LNB LNB Fault Control Faults: LNB N/A SSPA Fault Control Faults: Fan N/A Fan Fault Control Faults: SSPA N/A IF Impedance Impedance N/A PA State ON Transmit On (RS232) ON Transmit On (RS485) ON Transmit On (FSK) ON Transmit Default Last State Compensation Freq MHz IF Comp Freq. 950 MHz LO Frequency Local Oscl TX Alarm Threshold 0.0 Burst PWR Threshold 0.0 Serial Interface 9600,8,N,1 Packet Protocol Packet NDSATCOM Protocol Packet Address Packet Addr. 1 Redundancy Mode NON Redundancy On/Off Line N/A Comtech CDM-570L Satellite Modem (In CONFIG menu) Serial Number Firmware 5.4 Modem Firmware Average Eb/No 8.9 dbm Energy/Bit over noise (a.k.a. Signal Quality) Framing Mode Unframed Data Interface RS422 RTS/CTS Operation RTS/CTS Loop TX FEC TPC Transmit Modulation TX:MOD RATE 3/4 QPSK TX Code Rate 3/4 TX Data Rate Kbps

22 TX Symbol Rate TX IF Frequency Ksym MHz Page 22 TX RF Frequency MHz Ship TX frequency to Hub Station TX Output State RX-TX Inhibit TX Output PWR Level Manual, dbm ¾ QPSK TX Scrambling TX:SCRAM ON TX Clocking Mode TX:CLK INTERNAL Modem set to Internal clocking TX Spectrum Inverted TX Data Sense Normal RX FEC TPC RX Modulation RX:MOD QPSK RX Code Rate RX: Rate 3/4 RX Data Rate RX:DATA kbps RX Symbol Rate RX: Sym sym RX IF Frequency RX:IF MHz RX RF Frequency RX:RF MHz RX Demod Acquisition RX: Acq +/- 30 KHz RX Descrambling ON RX Buffer RX: Buf Disabled RX Spectrum Normal RX Data Sense Normal RX Eb/No Alarm Point 2.0 db Frequency Reference Internal 10 MHz TX FIFO Alarm MASKED G.703 BPV Alarm MASKED TX AIS Alarm MASKED AGC Alarm ACTIVE Eb/No Alarm MASKED RX AIS Alarm MASKED Buffer Alarm MASKED Reference Alarm MASKED BUC Alarm MASKED LNB Alarm ACTIVE BUC M&C FSK Comms ON BUC RF Output ON BUC FSK Address 01 BUC DC Power ON BUC 10 MHz Reference ON BUC Current Alarm Upper 3500 ma Limit BUC Current Alarm Lower 1000mA

23 Limit BUC LO Frequency Attach BUC Alarm to TX? BUC Frequency Mix MHz NO High Side Page 23 LNB DC Supply LNB 10 MHz Reference LNB Current Alarm Upper Limit LNB Current Alarm Lower Limit LNB LO Frequency Attach LNB Alarm to RX? LNB Frequency Mix Remote Control OFF ON 600 ma 010 ma MHz NO Low Side Local