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3.1.2 CONFIGURATION SWITCH SET "S2"
The DIP switches on S2 set word length, extended signaling rate,
RTS/CTS delay and V.52 and V.54 diagnostic test. The default settings
are summarized in the table below. Following the table is a description
of all possible S-2 switch settings.
Position
S2-1
S2-2
S2-3
S2-4
S2-5
S2-6
S2-7
S2-8
S2-1 and S2-2: Word Length
Switches S2-1 and S2-2 are set in combination to determine the
word length for asynchronous data.
S2-1
Off
On
Off
On
S2-3: Extended Signaling Rate
The setting for switch S2-3 determines the range of variability the
Model 1140RC "looks for" in asynchronous data rates (i.e., the actual
variance from a given frequency level the Model 1140RC will tolerate).
S2-3
Off
On
S2 SUMMARY TABLE
Function
Word Length
Word Length
Extended Signaling Rate
RTS/CTS Delay
RTS/CTS Delay
Future Use
Future Use
V.52/V.54 Tests
S2-2
Setting
On
8 bits
On
9 bits
Off
10 bits
Off
11 bits
Setting
-2.5% to +1%
-2.5% to +2.3%
Basic
Extended
7
Factory Default
Off
}
10 bits
Off
Off -2.5% to +2.3%
On
}
7 mS
On
-
-
Off
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