SeaSpace TeraScan 1.5M Operation And Maintenance Manual page 11

7.2.4.4 Sea-Going Antenna with NMEA 0183 Input-
Azimuth Mispositioned ......................................................................... 97
7.2.5 RF-Related Faults ................................................................................................. 98
7.2.5.1 L/S-Band Downconverter ........................................................................ 98
7.2.6 Time-Related Faults ............................................................................................. 98
7.2.6.1 Check/reset clock....................................................................................... 98
7.2.6.2 Check GPS with sunclock and whereami............................................... 98
Section 8: Antenna Repair Procedures..........................................................99
8.1 Tools for the Repair of Antenna Components.......................................................... 100
8.2 Spare Parts ..................................................................................................................... 102
8.2.1 1.5m Spares Kit [SPR-15-BASIC (Rev A)/70416511] 6003AL,
Servo Amplifiers Inside PCU, with Sk-II GPS .................................................. 102
8.2.2 1.5m Spares Kit [SPR-15-BASIC (Rev B)/70416810] 6003AL,
Servo Amplifiers Inside PCU, with Acutime Gold GPS.................................. 103
8.2.3 1.5m Spares Kit [70416501] 6003L, Separate Servo Amplifiers,
40:1 Azimuth Train ............................................................................................... 104
8.2.4 Other Spare Parts Not in Kits .......................................................................... 105
8.3 Packaging of Parts for Return Shipment to SeaSpace ............................................. 106
8.4 Replacement Procedures ............................................................................................. 107
8.4.1 Pedestal Control Unit (PCU) [12574548] [12574549] ..................................... 107
8.4.2 Axis Drive Motors [12574501] [12574505] [12574506] [12574507] ............... 114
8.4.3 Servo Amplifier [12574003] 6003L Only ......................................................... 122
8.4.4 Level Platform (Level Cage) [12574644][12574544] ...................................... 124
8.4.5 Level Platform (Level Cage) Drive Motor [12574035]................................... 126
8.4.6 Antenna Power Supply [12217001] [12217002] [PWR-220-SEA] ................. 128
8.4.7 Azimuth Pot [12574510], 6003L Only .............................................................. 130
8.4.8 Interface Harness [70096105] [70096106] ........................................................ 132
8.4.9 L/S Feed/LNA/ Downconverter [12218xxx] ................................................ 136
8.4.10 DC Power Injector [12791001] ....................................................................... 138
8.4.11 Cross-Level Drive Belt [12574520] ................................................................ 140
8.4.12 Elevation Drive Belt [12573613]..................................................................... 142
8.4.13 Azimuth Pot Drive Belt [12574524] 6003L Only ......................................... 144
8.4.14 Level Platform Drive Belt [12573614] / [12574526] ..................................... 146
8.4.15 Azimuth Drive Belts [12574521] and [12574523]; [12574525]..................... 148
8.5 Calibration and Adjustment Procedures................................................................... 152
8.5.1 Balancing the Antenna....................................................................................... 152
8.5.2 Reading PCU "N" Coefficients.......................................................................... 153
8.5.3 Entering PCU "N" Coefficients ......................................................................... 155
8.5.4 Calibration of the Level Platform..................................................................... 156
8.5.5 Azimuth Pot Calibration (6003L only) ............................................................ 157
8.5.6 Alignment of the Antenna Using pass reception, align and trackeye ........ 158
8.6 GPS Receiver and Antenna [70170101] (Separate Receiver and Antenna, Sk-II) 159
8.6.1 Theory of Operation........................................................................................... 159
8.6.2 Stand-alone GPS Receiver [70320001] ............................................................. 160
8.6.3 Stand-alone GPS Antenna [70347001] ............................................................ 161
8.7 GPS Receiver and Antenna [12120004] (One Assembly, Acutime Gold) ............. 162
8.7.1 Theory of Operation........................................................................................... 162
8.7.2 Stand-alone GPS Receiver and Antenna [70320004] ..................................... 163
TeraScan 1.5m Polar Satellite Tracking Antenna O & M Manual ix