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Symmetricom TimeSource 3100 User Guide

Symmetricom TimeSource 3100
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097-72020-01 Revision K – December 2005 TimeSource 3100 User’s Guide 165
Chapter 5 Troubleshooting
Troubleshooting with Error Messages
GPS ERROR The GPS receiver is reporting an
error.
If accompanied by the LOW
CURRENT FAULT or HIGH
CURRENT FAULT alarm, follow the
recommended action for LOW
CURRENT FAULT or HIGH
CURRENT FAULT.
If not accompanied by the LOW
CURRENT FAULT or HIGH
CURRENT FAULT alarm:
1. Remove the antenna cable from
the connector panel on the shelf.
2. Measure the DC voltage from the
antenna connector center pin to the
connector housing on the shelf TNC
antenna connector.
3. If the voltage is not 18 VDC ±2
Vdc, replace the TimeSource 3100
card.
4. If the voltage is 18 VDC ±2 Vdc,
measure the current between the
antenna connector center pin and
the connector housing on the shelf
TNC antenna connector.
5. If the current is less than 5 mA or
more than 500 mA, replace the
TimeSource 3100 card. If not
(nominal current is 125 mA),
reconnect the antenna cable to the
shelf.
6. Remove the antenna cable from
the antenna, and measure DC
voltage and current from the
connector center pin to the
connector housing on the cable
connector.
7. If the readings are 18 VDC and
125 mA, replace the antenna. If not,
verify the cable path. Replace
cables, lightning suppressor, or IF
converter as necessary.
8. If the error repeats, check the
view of the sky for obstructions.
9. If the error repeats, replace the
antenna.
Table 5-2. Message Troubleshooting (Continued)
Message Meaning Recommended Action

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Symmetricom TimeSource 3100 Specifications

General IconGeneral
BrandSymmetricom
ModelTimeSource 3100
CategoryGPS
LanguageEnglish

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