COMBA CPBBUV2-48100-UL Manuel d'installation rapide - Page 9
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Troubleshooting
If annunciator does not power on or does not appear in BBU GUI after wiring has been confirmed, use a multimeter to
check the following pins for resistance and voltage according to the below instructions.
BBU Measurements
1. Turn on the BBU.
2. Measure voltage from 1->3 and 2->3.
1 to 3
2 to 3
1. Turn off the BBU.
2.
Measure the resistance from 1->3, 2->3, and 1->2.
1 to 3
2 to 3
1 to 2
Annunciator Panel Measurements
1. Turn ON the annunciator panel.
2. Measure voltages across 1->3 and 2->3
Voltage should be around 1.65V +- 0.05V.
1 to 3
2 to 3
©2021 Comba Telecom. All Rights Reserved.
568 Gibraltar Drive, Milpitas, CA 95035 | +1 866 802 7961 |
BBU V1
www.combausa.com
~ 1.65 VDC
~ 1.65 VDC
~ 450 Ohms
~ 450 Ohms
~ 50 Ohms
~ 1.65 VDC
~ 1.65 VDC
BBU V2
Version 1.0.0
9
1.18.21