Test Switch And Led; Figure 2-3. Electrical Loopback; Figure 2-4. Optical Loopback - ADTRAN OCU 45 Manual

Test Switch and LED

The LED reflects the loopback diagnostic switch setting. Two diagnostic
T
EST
loopbacks are provided:
testing diagrams for the Electrical and Optical loopback tests.
ELEC LIU
RX
TX
ELEC LIU
RX
TX
61200664L1-1B
and
E
LECTRICAL
OCU 45 User Manual
. The following figures show
O
PTICAL
OPTC XCVR

Figure 2-3. Electrical Loopback

OPTC XCVR

Figure 2-4. Optical Loopback

Chapter 2. Installation
TX
RX
TX
RX
25