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
Monitoring
31 If the RF output power falls below 100 W the transceiver sends an RF Power warning
message to the display system and switches to the Degraded state of operation.
32 If the VSWR on the RF output is above 2.0:1 the transceiver sends an Antenna VSWR
warning message to the display system and switches to the Degraded state of operation.
33 If the minimum detectable signal rises above a preset level the transceiver sends a
Receiver Sensitivity warning message to the display system and switches to the
Degraded state of operation.
34 If the transceiver detects hardware faults (frequency synthesis or phase locked oscillator
failure), it sends a warning message to the display system and switches to the Degraded
state of operation.
35 If communication between the transceiver and the display system is lost for > 5 seconds
the transceiver switches to the fault state.
36 If the temperature of the RF power transistors in the transceiver exceeds a predetermined
limit, the transceiver sends an Overtemperature warning to the display system and
switches to the Degraded state. If the temperature exceeds a further preset limit the transceiver
switches to the Fault state. As the temperature drops below the predetermined limits the
transceiver returns to the Degraded state and then to normal Transmit operation.
CAN Bus Interface
37 The CAN bus signals to and from the display system are routed via the CAN Adapter
PCB (NNR-A981), which interfaces the CAN bus to the RS232 interface on the
Transceiver (DTX-A115). The CAN Adapter PCB converts the RS232 signals from the
Transceiver into CAN bus signals for routing to the display, and converts the CAN bus signals
from the display to RS232 signals for application to the transceiver.
+15 V Supplies
38 +15 V from the transceiver is routed to the SharpEye
TM
Azimuth Interface PCB
(DTX-A151). The SharpEye
TM
Azimuth Interface PCB routes the +15 V to the Encoder
and the CAN Adapter PCB (NNR-A981).
Power Sup ply (45-690-0062-002)
39 The transceiver uses 110 V or 220 V single phase mains, which is passed through a mains
filter before application to the Switched Mode Power Supply. The Power Supply
provides the following DC supplies for the transceiver module:
(1) +3.3 V at 5.0 A for the digital processing circuits.
(2) +15 V at 5.0 A for the digital processing and amplifier circuits.
(3) +13 V at 6.0 A for the amplifier circuits.
KH1264
Chap ter 3
Is sue 2 Page 3.11