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OPERATION
N E T W O R K
5 5 1
C S U
O N
S Y N N S L B B P V A I S
NOTE: USE OF THESE SWITCHES MAY BE INHIBITED, DEPENDING ON SELECTION OF THE INHIBIT FRONT PANEL OPTION.
3-4
REMOTE TEST
ENGAGE TO PLACE THE CSU IN REMOTE TEST (RT).
SELF TEST
ENGAGE TO PLACE THE CSU IN END-TO-END SELF-TEST (ST).
USE WITH LT FOR LOCAL TEST WITH SELF-TEST.
USE WITH RT FOR REMOTE TEST WITH SELF-TEST.
LOCAL TEST
ENGAGE TO PLACE THE CSU IN LOCAL TEST (LT).
E Q U I P
0 ' S L A D N S T M
FIGURE 3-3. FRONT PANEL SWITCHES
RT
ST
LT
E R R
C S U
E Q U I P
A L M
O U T
I N
M O N
SWITCH DISENGAGED
SWITCH ENGAGED
L T
S T
R T
O U T
I N
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