COMBA CPBBUV1-48055-UL Quick Installation Manual - Page 9
Browse online or download pdf Quick Installation Manual for Conference System COMBA CPBBUV1-48055-UL. COMBA CPBBUV1-48055-UL 11 pages. Annunciator panel
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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 Control Board Measurements (note BBU version when testing)
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. Unplug the three-wire jumper (V1 BBU) or disconnect the three data wire (V2 BBU) on the BBU control board
that feeds the annunciator panel
3. Measure the resistance from 1->3, 2->3, and 1->2
1 to 3
2 to 3
1 to 2
©2021 Comba Telecom. All Rights Reserved.
568 Gibraltar Drive, Milpitas, CA 95035 | +1 408 526 0180 Ext 3 |
BBU V1
~ 450 Ohms
~ 450 Ohms
~ 50 Ohms
BBU V1
~ 1.65 VDC
~ 1.65 VDC
1 to 3
2 to 3
1 to 2
www.combausa.com
BBU V2
~ 2.2k Ohms
~ 2.2k Ohms
~ 130 Ohms
BBU V2
9
Version 1.0.4
1.16.23