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363-206-285
Issue 2, February 2000
2.
If the BBF2B/BBF2C TGS or BBF4 TG3 circuit pack is being installed and is
provisioned for either sync out mode, refer to Table E and set the equalizer
switches for proper cable length.
Table E – Equalizer Switch Settings
Equalization
0' to 131'
>131' to 262'
>262' to 393'
>393' to 524'
>524' to 655'
Invalid
Invalid
Invalid
3.
NOTE:
Switches S1-1 and S1-2 are ignored by the system unless the timing
mode is set to DS1 External or Line Timed sync out mode .
Is timing mode set to either DS1 External or Line Timed sync out mode ?
If YES, then continue with Step 4.
If NO, then proceed to Step 5.
4.
Refer to Table F and set the DS1 line coding and frame format as required for
the TGS/TG3 circuit pack. See Figures 1 and 2.
Table F – TGS/TG3 DS1 Line Coding and Frame Format Switch Settings
DS1 Line Code
AMI
B8ZS
S2-1
S2-2
S2-3
ON
ON
OFF
ON
OFF
ON
ON
OFF
OFF
OFF
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
Switch
S1-1
DS1 Frame Format
ON
SF
OFF
ESF
DDM-2000 OC-3 M
Detailed Level Procedure:
Switch
S1-2
ON
OFF
ULTIPLEXER
DLP-503
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