Chapter 5. Maintenance And Troubleshooting; Periodic Maintenance; Troubleshooting; Table 5-1. Symptoms And Possible Causes - Comtech EF Data DMD1050TS Installation And Operation Manual

Chapter 5. Maintenance and
WARNING - DANGER OF EXPLOSION – LITHIUM BATTERY
This unit contains a lithium battery. You must replace the lithium battery with the same
or equivalent battery that is recommended by the manufacturer. You must dispose of
used batteries as required by local and national regulations. Make sure to prevent
static discharge that can cause damage to the Modem Board.
5.1

Periodic Maintenance

The DMD1050TS does not require periodic maintenance.
5.2

Troubleshooting

First, examine all interface signals for correct operation. If a unit is suspected of a defect in field
operations after that, replace the unit with another known working DMD1050TS. If a problem still
exists, examine the wiring or power.
Table 5-1 is a brief list of problems that can be caused by failures of the modem, or by incorrect
setup or configuration for the type of service.
The Modem does not acquire the incoming
carrier.
The Async Port is not configured correctly.
Maintenance and Troubleshooting

Table 5-1. Symptoms and Possible Causes

SYMPTOM
DMD1050TS Satellite Modem Board
Troubleshooting
POSSIBLE CAUSE
Incorrect receive input to the modem
Receive Carrier Level is too low
Receive Carrier Frequency is outside of the acquisition range
Transmit Carrier is incompatible
Modem is in Test Mode
Switches are set incorrectly
5–1
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MN-DMD1050TS