User's Manual

5634RCS User’s Manual
39
S-
Register
Range Default Description
S18
0-255
seconds
0
Test Timer
Register S18 sets the amount of time for
modem tests. The tests can run from 1 to
255 seconds, depending on the value in
S18. The factory setting turns off the timer.
If the command &T0 is used to end the
modem tests, the value of S18 can be set to
0 to turn off the test timer.
AutoSync Bit Mapped Options
Defines the options for AutoSync operation .
S19 must be set to the desired value before
&Q4 is issued.
S19
Bit
Mapped
0,
hex
Bit 1
BSC/HDLC format select
0 = BSC selected (default)
1 = HDLC selected
Bit 2
Address detection enable/disable
0 = Disabled (default)
1 = Enabled
Bit 3
NRZI/NZI coding select
0 = NRZI (default)
1 = NZI
Bit 4
Idle indictor select
0 = Mark idle (default)
1 = Flag or sync idle
S20
0 - 255 0
AutoSync HDLC Address or BSC Sync
Character
S-Register S20 defines the HDLC address
or BSC Sync Character for AutoSync
operation. S20 must be set to the desired
value before &Q4 is issued.