Lanex MD-76, Руководство по эксплуатации

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E1/G.703 F
IBER
O
PTIC
M
ODEM
O
PERATING
M
ANUAL
IOA76-1F 7 May 2009
2.3 MD-76 modem (card)
MD-76.1
MD-76.1
5
2
9
7
AACK
4
5
6
1
2
3
Figure 5. View of TM-76 front and rear panel
1 - power supply indication diode
2 - group of signaling diodes:
LOES – loss of input electrical signal
LOOS – loss of optical receiver input signal
LDF– laser diode failure (loss of optical transmitter output power)
LOF – loss of frame synchronization of received signal
10
-3
– error rate 10
-3
exceeded
10
-6
– error rate 10
-6
exceeded
RAL – remote alarm
group of alarm condition signaling diodes:
UA – urgent alarm
ACK – acknowledgement of urgent alarm
NUA – non-urgent alarm
ACK – acknowledgement of non-urgent alarm
3- AACK – alarm acknowledgment button
4- Optical receiver input
5- Optical receiver output
6- 120 ohm symmetric linear signal input/output Ω
- DB-9 connector