4. DSR During Local Line Loop
Select Option 4 in the SOFTWARE CONFIGURATION to configure
the behavior of the local Data Set Ready (DSR) signal during the Local
Line Loop test mode (below).
5. Response to Remote Digital Loop
Select Option 5 in the SOFTWARE CONFIGURATION Menu to
instruct the Model 1092RC to either respond or ignore the Remote
Digital Loop request from the remote 1092RC.
6. DTE Controlled Local Line Loop
Select Option 6 in the SOFTWARE CONFIGURATION Menu to
instruct the Model 1092RC to either respond or ignore Local Line Loop
requests from the DTE. To instruct the Model 1092RC to respond to
Local Line Loop requests from the DTE, select Enable (Option 1). To
instruct the 1092RC to ignore Local Line Loop requests from the DTE
interface, select Disable (Option 2).
15
3.3.1 Model 1000RCM12592 Strap Settings
Figure 6 shows strap locations for the Model 1000RCM12592
(DB-25/RJ-45S) rear cards. These straps determine various grounding
characteristics for the terminal interface and twisted pair lines. JB3
and JB4 are user configurable. JB2
must
be set on pegs 1 and 2.
The table below provides an overview of interface strap functions
for the rear interface cards. Following the table overview are detailed
descriptions of each strap’s function.
DTE Shield (DB-25 Pin 1) & FRGND (JB3)
In the connected position, this strap links DB-25 pin 1 & frame
ground. In the open position, pin 1 is disconnected from frame ground.
JB3
Position 1&2 = DTE Shield (Pin 1) and FRGND Connected
Position 2&3 = DTE Shield (Pin 1) and FRGND Not Connected
22
Figure 6.
DB-25/RJ-45S strap locations
JB3
JB4
JB2
INTERFACE CARD STRAP SUMMARY TABLE #1
Strap
Function
Position 1&2
Position 2&3
JB3
DTE Shield (Pin1) & FRGND
Connected
Open*
JB4
FRGND & SGND
Connected
Open*
* Indicates default setting
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123
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