Initial Issue
Issue Date 25/06/2010
User Manual: 8142/8182 Transceivers
06 Fault Finding
Page
2of 3
1 NO COMMNUICATION FROM TRANSCEIVER
1.1
CHECK THE WIRING AND THE POWER
1.
Check the LED’s on the Navigation Sensor Hub (NSH) to confirm power is available to the
transceiver.
2.
If power is not available continue with steps 4 to 6.
3.
If power is available continue to section 1.2.
4.
Access the transceiver and check all connections.
5.
Check for correct wiring using wiring diagram (Ref
. Fig 1
).
6.
Make sure Marksman software is running on the PC and check the transceiver has been added
to the correct port. (Ref software manual).
If power is not available after step 4 (Ref to the Marksman System Operating Manual Fault Finding).
1.2
CHECK AGP CONNECTOR
1.
Unplug the AGP connector.
2.
Check for 48V at the pin outs of the AGP connector (Ref
. Section 15, Drawings, Fig 2
).
If power is available continue to section 1.3.
3.
If power is not available check wiring is not damaged and is correctly routed (Ref.
Fig 1
).
1.3
CHECK CONTINUITY OF RS485 CONNECTION
1.
Turn off the power to the system.
2.
Unplug the topside wiring.
3.
Connect the RS 485 pins 3 and 4 together (Ref
. Section 15, Drawings, Fig 2
).
4.
Use a multi-meter to check the continuity of the RS 485+ / RS 485- on the Amphenol connector
(Ref
. Section 15, Drawings, Fig 4
).
5.
If no fault is found then the wiring is correct.
6.
Check the polarity of the RS 485 wires carefully as this cannot be verified.
If the wiring is correct (Ref:
Operational Test
).
Summary of Contents for 8142-000-01
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