3.2 CONFIGURING THE REAR INTERFACE CARD
The Model 2710RC Series has three interface card options: the
Model 1001RCM12548C (DB-25/RJ-48C), the Model
1001RCM13448C (M/34/RJ-48C), the Model 1001RCM11548C (DB-
15/RJ-48C). Each of these options supports one DTE interface con-
nection and one 4-wire line connection. Figure 3 below illustrates the
three different inter-
face options for the Model 2710RC Series.
Prior to installation, you will need to examine the rear card you
have selected and make sure it is properly configured for your applica-
tion. Each rear card is configured by setting straps located on the PC
board. To configure the rear cards, you must set the configuration
Figure 4. Orientation of Interface Card Straps
11
12
straps. Figure 4 below shows the orientation of these straps. Each
strap can either be on pegs 1 and 2, or on pegs 2 and 3.
Sections 3.2.1, 3.2.2, and 3.2.3 describe the strap locations and possi-
ble settings for each rear card.
3.2.1 Model 1001RCM12548C Strap Settings
Figure 5 shows strap locations for the Model 1001RCM12548C
(DB-25) rear cards. These straps determine various grounding charac-
teristics for the terminal interface and twisted pair lines. JB3 and JB4
are user configurable.
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
Figure 3. Model 2710RC Series interface card options
DB-15 F
M/34 F
DB-25 F
Model
1001RCM12548C
Model
1001RCM11548C
Model
1001RCM13448C
RJ-48C
RJ-48C
RJ-48C
NOTE:
The 2710RC Series rear cards are specifically designed
to operate with the T1 function card and must not be swapped
with other Patton function cards.
Figure 5. 1001RCM125XX strap locations
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
