13
14
3.5 REAR CARD CONFIGURATION
The Model 1065RC has two interface card options: DB-25/RJ-11
and DB-25/RJ-45. Each of these options supports one RS-232 con-
nection and one 4-wire connection. Figure 8 illustrates the two differ-
ent interface options for the Model 1065RC.
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. Section 3.5.1 describes the strap locations and possible set-
tings for each rear card.
3.5.1 REAR CARD STRAP SETTINGS
Figure 9 shows strap locations for the Model 1000RMC12511
(DB-25/RJ-11) and the Model 1000RMC12545 (DB-25/RJ-45) rear
cards. These straps determine various grounding characteristics for
the RS-232 and twisted pair lines.
Figure 10 shows the orientation of the rear interface card straps.
The strap can either be on pegs 1 and 2, or on pegs 2 and 3.
Figure 11 below provides an overview of interface strap functions
for the rear interface cards. Following this overview is a detailed
description of each strap’s function.
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*
Figure 11. Summary of strap settings, * indicates factory default
Figure 10. Orientation of interface card straps
1
2
3
1
2
3
1
2
3
Figure 9. DB-25/RJ-11 & DB-25/RJ-45 strap locations
JB3
(peg 1 on top)
JB4
(peg 1 on left)
RJ-11 (6-wire)
RJ-45 (8-wire)
Figure 8. Model 1065RC interface card options
DB-25 F
DB-25 F
