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S2-4 and S2-5: RTS/CTS Delay
The combined settings for switches S2-4 and S2-5 determine the
amount of delay between the time the Model 1140RC "sees" RTS and
when it sends CTS. Options are no delay, 7 ms and 53 ms.
S2-4
On
Off
On
Off
S2-8: V.54 Loopback Test Enable
To reset the V.54 circuit, set switch S2-6 to the "ON" position, then
back to the "OFF" position..
S2-8
Off
On
3.2 REAR CARD CONFIGURATION
The Model 1140RC is compatible with two dual-fiber interface cards,
one with dual ST connectors and one with dual SMA connectors. Both
cards use an HD-26 female for the RS-232 interface. The single
configuration jumper (JB1) functions identically on both cards. Figure 3
(below) shows the jumper's location.
Figure 3. Model 1140RC rear card jumper location
S2-5
Setting
On
7 mS
On
53 mS
Off
No delay
Off
No delay
Setting
V.54 Enable
V.54 Disable
8
JB1
(pin 1 on left)
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