| DS-1
Select (1 to 28): DS-1 UP/DOWN Switches and two digit display
to select and indicate 1 of 28 DS-1s in DS-3 to be configured for
pattern, framing, and clock.
DS-1 Pattern Select:
Switch and LEDs for QRSS, 3in24, All 1s, 1:7, All 0s, PRG1, PRG2,
and THRU (CLOCK AND DATA FROM EXTERNAL DS-1 input).
DS-1 Frame Select:
Switch and LEDs to select SF, ESF, or OFF (unframed) framing.
DS-1 Clock Select:
Switch and LEDs to select internal Clock 1 or Clock 2 for the displayed
timing.
DS-1 Error Insert:
Switch inserts one data error and one CRC-6 (ESF) error in the displayed
pattern. All DS-1s which are using the same pattern/framing/clock
will have error inserted.
DS-3 Output: Switch
and LEDs to select DS-3 output for AIS (1010 blue signal), IDLE(1100)
or Multiplex.
DS-3 Frame: Switch
and LEDs to select DS-3 output for M13 or C-Bit framing.
DS-3 Error Insert:
Switch inserts parity error for M13 framing and parity and C-parity
for C-Bit framing.
Fail LED: On indicates
internally detected failure of the DS-3 output driver.
External Clock LED:
On indicates the rear panel externally applied DS-3 signal is providing
the DS-3 output timing.
Remote LED: On
indicates the RS-232 lock out is enabled. Local control except UP/DOWN
select is disabled.
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