TTC PCM30U - Tolerance Mask and Example of Measured Hysterezis for 2

PCM30U, PCM30U-OCH – User's, Operating and Maintenance Manual
Green Line interfaces 1,2 in operational state
Yellow High BER, slip at line interface 1,2
Check synchronization
Yellow - flashing Loop at line interface 1,2.
1, 2
Red Loss of signal
Check cables, cooperating equipment
Red Urgent alarm
Single bit error (light prolonged to 100 ms)
1. Check synchronization – single errors may be caused by
slips.
2. Internal battery voltage under tolerance (below 40 V DC)
Green Non Urgent alarm
E2
Yellow flashing Service alarm
“Data signal in loop detected”
1. Check loop id. It must be different at opposite PBS‘s.
2. Check data path for loops (CJAB flashes), cooperating
equipment
*1) When changing PBS, be sure that it has the same HW and FW configuration.
E.1.15 Tolerance mask and example of measured hysterezis for 2
nd
input
(before adjustment inputs to 0,6 – 0,65 Un)
Power Channel Modules E-28 446S037.914.14N00