User's Manual
2
- TX Synth Lock –Transmit synthesizer out of lock.
If any of the following TX faults are detected, replace the RF deck.
- TX Temperature –PA temperature has exceeded limits.
- TX Fwd Power –Forward power is below limits when keyed.
- TX NoFwdPower –Forward power is above limits when not keyed.
- TX Power1 –Output of exciter is below limits.
- TX Power2 –Output of exciter is below limits.
- TX Power3 –Output of exciter is below limits.
- TX Power4 –Output of exciter is below limits.
- TX Imbal ½ Ratio of Tx Power 1 to Tx Power 2 is beyond limits.
- TX Imbal ¾ Ratio of Tx Power 3 to Tx Power 4 is beyond limits.
- TX Fan Op –Fan does not work.
- TX Fan1 Cur –Fan current is beyond limits.
- TX Fan2 Cur –Fan current is beyond limits.
2 A
TX VSWR –The VSWR is beyond limits fault indicates an antenna problem.
Check all antenna connections at the antenna, feed line, and at the repeater. If
necessary, replace the antenna, and/or the feed line.
Repeater not receiving
• Verify the repeater has supplied AC power.
• Ensure that the RX DSP card is fully seated, with no bent pins.
• Ensure that the Channel Controller card is fully seated, with no bent pins.
• Reboot the Channel Controller card by momentarily pressing the Reset button on the
card. If this does not correct the problem, continue to the next item.
• Verify that the proper options are installed in case of P25 or VoIP
• Check the receive and transmit frequencies
• Make sure the RF deck is tightly secured.
• Verify NAC
• Check the LO and RF cable connection on the receive board
• Perform a Receiver Test - Connect an RF test signal to the RF receive port. This
signal should be set to the repeater’s receive frequency and modulated with a standard
P25 1011Hz Tone.
1 From the diagnostics application, select
2
RX > RX Test > BER > Start
2
Verify that receive sensitivity is within specified limits.
2
Stop the test.
2
If the BER test fails, then replace the RF deck.
2
If the display indicates “NO RSP”, then replace the receive DSP card.
If the red EIC LED remains on, select the
2
Faults menu item to view detected
faults.
If the
RX Synth Lock - Receiver synthesizer is out of lock fault is detected,
replace the RF deck.
Repeater not communicating over
• Verify the repeater has supplied AC power