User's Manual
Table Of Contents
- KH1264 ISSUE 1
- CHAPTER 1
- CHAPTER 2
- CHAPTER 3
- CONTENTS
- ILLUSTRATIONS
- Figure 1 - Transceiver (DTX-A3): Module Locations 34
- Figure 2 - Drive Control Unit (GTX-A24): Module Locations 35
- Figure 3 X-band Upmast Transceiver (DTX-A3): Functional Diagram Figure 3 38
- Figure 4 X-band Upmast Transceiver (DTX-A3): Interconnection Diagram Figure 4 39
- Figure 5 - Drive Control Unit (GTX-A24): Block Diagram 319
- CHAPTER 4
- CONTENTS
- TABLES
- ILLUSTRATIONS
- Figure 1 - Transceiver (DTX-A3): Installation Dimensions 49
- Figure 2 - Transceiver (DTX-A3): Mast Mounting 410
- Figure 3 - Transceiver (DTX-A3): Fitting Kit 411
- Figure 4 - Suggested Antenna Lifting Arrangement 412
- Figure 5 - Drive Control Unit (GTX-A24): Installation Dimensions 413
- Figure 6 - Mains Isolator: Installation Dimensions 414
- Figure 7 - Transceiver (DTX-A3): Cableform Routing 419
- Figure 8 - Drive Control Unit (GTX-A24): Cableform Routing 420
- Figure 9 - Cable Gland: Assembly 421
- Figure 10 - Transceiver (DTX-A3): External Connections 423
- CHAPTER 5
- CHAPTER 6
- CONTENTS
- INTRODUCTION 63
- PLANNED MAINTENANCE 63
- DIAGNOSTIC MAINTENANCE 64
- CORRECTIVE MAINTENANCE 611
- TRANSCEIVER (DTX-A3) 612
- Access 612
- Removal of Rotating Joint (45-750-0034-001) 612
- Replacement of Rotating Joint (45-750-0034-001) 613
- Removal of Gearbox and Motor (55-100-0273-001) 613
- Replacement of Gearbox and Motor (55-100-0273-001) 613
- Removal of Azimuth Encoder (GTX-A188) 613
- Replacement of Azimuth Encoder (GTX-A188) 613
- Transceiver (DTX-A115) - Removal 614
- Transceiver (DTX-A115) - Replacement 614
- Power Supply (45-690-0062-002) and PSU Sense PCB (DTX-A121) - Removal 615
- Power Supply (45-690-0062-002) and PSU Sense PCB (DTX-A121) - Replacement 615
- CAN Adapter PCB (NNR-A981) - Removal 615
- CAN Adapter PCB (NNR-A981) - Replacement 615
- SharpEye Azimuth Interface PCB (DTX-A151) - Removal 616
- SharpEye Azimuth Interface PCB (DTX-A151) - Replacement 616
- DRIVE CONTROL UNIT (GTX-A24) 618
- CHECKS AFTER UNIT REPLACEMENT 620
- TRANSCEIVER (DTX-A3) 612
- ILLUSTRATIONS
- CONTENTS
- CHAPTER 7
- INSTALLATION AND SERVICE REPORTS

Drive Con trol Unit
NOTE: The inverter is set up in the factory for operation with an input frequency of 50 Hz.
WARNING
THE INVERTER MUST BE SET TO REMOTE OPERATION.
IF THE INVERTER IS SET TO LOCAL OPERATION IT WILL BE SWITCHED
ON REGARDLESS OF THE POSITION OF THE ON/OFF KEYSWITCH, THUS
OVERRIDING THE MAN ALOFT INTERLOCK FUNCTION.
5 The Drive Control Unit contains an inverter that must be programmed to provide the
correct frequency of rotation for the antenna. Refer to Figure 1 for the location of the
inverter.
6 Remove the Drive Control Unit front cover by releasing the four screws. This allows
access to the inverter.
7 The inverter in the Drive Control Unit is Factory set for 50 Hz input and provides a 25 Hz
(low speed antenna) or 50 Hz (high speed antenna) depending on the link settings. If a
different mains frequency is used or a system specific configuration is required, the inverter may
require reconfiguring. To change a parameter proceed as follows:
NOTE: The inverter must be set up as specified in the table overleaf in order for it to function
correctly for this system. The following procedure explains how to access the menu
functions.
(1) Switch the mains ON and turn the keyswitch to the ON position. The inverter
initialises and the readout goes to 0.00.
(2) Press the MON button. Whilst programming the PRG indicator is lit for the main
function path, and flashes for F--- setting path.
(3) Press the Ý button to scroll down through the function menu as listed below. Press
the ß button to scroll up through the menu.
(4) At any function, pres ENT to read the Function Setting. Press Ý or ß to change the
setting and then press ENT to save the new setting and return to the function
menu.
(5) When the menu reaches F---, press ENT to access F100, then press Ý to scroll
F101, F102 to F990. Pressing ß scrolls F100, F990, F880 to F100.
(6) At any F--- function press ENT to read the Function Setting and Ý ß buttons to
change the Setting.
(7) Press ENT to enter the new setting and return to the Function menu.
(8) To exit menus, press MON button until 00 is displayed.
(9) To change from 50 Hz to 60 Hz operation select function typ and select 2.
(10) To set the antenna motor to high speed rotation select function 417 and set to 2820
for 50 Hz operation or 3384 for 60 Hz operation.
KH1264
Chap ter 5
Page 5.4 Is sue 2