
CI872 and TP858 - MOD5 Interface Appendix A Hardware Units
350 3BSE036351-510 A
Indicators
There are six LED indicators on the front panel of CI872 that indicate different
states of the CI872 module including communication on the optical ports states.
Technical Data
Table 106. MOD5 Interface CI872 - LED indicators
Designation/Color Function
F(ault) / Red The red F(ault) LED indicates a fault condition on CI872.
R(un) / Green The green R(un) LED indicates that CI872 is operational.
RxTx1 / Yellow The yellow Rx/Tx1 LED is illuminated when receiving or transmitting a
byte at the optical channel–Ch1.
RxTx2 / Yellow The yellow Rx/Tx2 LED is illuminated when receiving or transmitting a
byte at the optical channel–Ch2.
Rx/Tx3/Yellow The yellow Rx/Tx3 LED is illuminated when receiving or transmitting a
byte at the optical channel–Ch3.
DUAL/Yellow The yellow DUAL LED is illuminated when CI872 is run in redundant
configuration and a working partnership between the two CI872s is
established.
Table 107. MOD5 Interface CI872 - Technical Specification
Item Value
Ty p e Fiber optic connection.
Protocol MOD5-to-MOD5.
Communication speed Full duplex at a speed of 500 Kbps.
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