17
DTE Shield (M/34 Pin A) & FRGND (JB3).
In the connected position,
this strap links M/34 pin A & frame ground. In the open position, pin A is
disconnected from frame ground (see Table 13).
SGND & FRGND (JB4).
In the connected position, this strap links Signal
Ground and frame ground through a 100 ohm resistor. In the open posi-
tion, signal ground is disconnected from frame ground (see Table 14).
Model 1001RCM11548C Strap Settings
Figure 9 on page 18 shows strap locations for the Model
1001RCM11548C (DB-15) rear cards. These straps determine various
grounding characteristics for the terminal interface and twisted pair lines.
JB3 and JB4 are user configurable.
Table 13:
JB3 strap settings
Position
Description
1 & 2
DTE Shield (Pin A) and FRGND Connection
2 & 3
DTE Shield (Pin A) and FRGND Not Connected
Table 14:
JB4 strap settings
Position
Description
1 & 2
SGND and FRGND Connected
2 & 3
SGND and FRGND Not Connected
