363-206-285 Detailed Level Procedure: DLP-513
Issue 2, February 2000 Page 11 of 20
DDM-2000 OC-3 MULTIPLEXER
12. If the BBF2B/BBF2C TGS or BBF4 TG3 is provisioned for
sync out mode
,
refer to Table H and Figure 3 and set equalizer switches for the proper cable
length.
13.
NOTE:
Switches S1-1 and S1-2 are ignored by the system the first time the
TGS/TG3 is installed unless the timing mode is set to
DS1 External
or
Line Timing sync out mode
. Subsequent removal or replacement of the
TGS/TG3 requires that switches S1-1 and S1-2 be set the same as the
original settings or an update (upd) command must be performed.
Is timing mode set to either
DS1 External
or
Line Timed sync out
?
If YES, then continue with Step 14.
If NO, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
14. Refer to Table H and Figure 3 and set the DS1 line coding and frame format as
required for the TGS/TG3 circuit pack.
15. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
Table G – Equalizer Switch Settings
Equalization S2-1 S2-2 S2-3
0’ to 131’ ON ON OFF
>131’ to 262’ ON OFF ON
>262’ to 393’ ON OFF OFF
>393’ to 524’ OFF ON ON
>524’ to 655’ OFF ON OFF
Invalid* OFF OFF OFF
Invalid* OFF OFF ON
Invalid* ON ON ON
* If an invalid setting is selected, FAULT LED
is lighted and an alarm is generated
(unexpected CP type or
unexpected CP switches).
Table H – BBF2B/BBF2C TGS/BBF4 TG3 DS1 Line Coding and Frame Format
Switch Settings
DS1 Line Code
Switch
DS1 Frame Format
Switch
S1-1 S1-2
AMI ON SF ON
B8ZS OFF ESF OFF
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