14
ASYNC/SYNC FIBER OPTIC MODEM
3.3.2 S2-3: E
XTENDED
S
IGNALING
R
ATE
The setting for switch S2-3 determines the range of variability the Async/Sync Fiber
Optic Modem looks for in asynchronous data rates (i.e., the actual variance from a
given frequency level the modem will tolerate).
Table 3-8. S2-3 switch setting.
S2-3
Setting
Off
-2.5% to +1%
Basic
On
-2.5% to +2.3%
Extended*
*Default
3.3.3 S2-4
AND
S2-5: RTS/CTS D
ELAY
The combined settings for switches S2-4 and S2-5 determine the amount of delay
between the time the modem sees RTS and when it sends CTS. Options are no
delay, 7 ms, and 53 ms.
Table 3-9. S2-4 and S2-5 switch settings.
S2-4
S2-5
Setting
On
On
7 ms*
Off
On
53 ms
On
Off
No delay
Off
Off
No delay
*Default
