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
DI AG NOS TIC MAIN TE NANCE
WARNING
THIS EQUIP MENT IS NOT FITTED WITH SAFETY IN TER LOCKS AND
LE THAL VOLT AGES ARE PRES ENT WITHIN THE UNIT. AC CESS TO THE
IN TE RIOR OF THE UNIT IS ONLY TO BE CARRIED OUT BY A QUAL IFIED
TECH NI CIAN.
4 The flowcharts in this chapter provide an aid to fault diagnosis in the transceiver. The
algorithms enable fault diagnosis down to module level and also identify wiring faults.
Entry to the algorithms is via Failure Messages generated by the display.
PRE-REQ UI SITES
5 The diagnostic routines in the flow charts assume that the radar has been working, and
that the system is set up for normal operation at the time the fault occurred.
FAIL URE MES SAGES
6 These failure messages appear in the data field of the display monitor if certain signals
are missing. One or more of the following messages may be displayed on the display
system:
(1) No Sync. Indicates that the display is not detecting sync pulses from the
transceiver.
(2) No Video. Indicates that the display is not detecting video from the transceiver.
(3) No Azimuth. Indicates that the display is not detecting azimuth pulses from the
transceiver.
(4) No Heading Line. Indicates that the display is not detecting heading line pulses
from the transceiver.
7 The following messages are supplied from the transceiver via the CAN bus, which may
switch to degraded mode of operation (low power output, low sensitivity etc) or fault
mode:
(1) Receiver Sensitivity Low. This indicates that the minimum detectable signal is
³TBD dB, indicating a receiver fault. The transceiver continues operating in the
degraded state. Should the minimum detectable signal be ³TBD dB, the
transceiver will enter the fault state.
(2) Antenna VSWR High. The transceiver has detected a high reverse power and
hence VSWR. This indicates that there is a mismatch in the transceiver output to
the antenna, e.g. an antenna or rotating joint fault.
(3) RF Power Low. The transceiver has detected low power on the output. If the
power is 3 dB below normal this indicates that one of the two RF output
transistors in the transceiver has failed, i.e. a fault in the transceiver unit. The
transceiver continues operating in a degraded state on half power. Should the
second RF output transistor then fail, the transceiver will enter the fault state.
KH1264
Chap ter 6
Page 6.4 Is sue 2