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18
Figure 9.
1001RCM11548C strap locations.
Table 15 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-15 Pin 1) & FRGND (JB3).
In the connected position,
this strap links DB-15 pin 1 & frame ground. In the open position, pin 1 is
disconnected from frame ground (see Table 16).
Table 15:
Interface Card Strap Summary
Strap
Function
Position 1&2
Position 2&3
JB3
DTE Shield (Pin1) & FRGND
Connected*
Open
JB4
FRGND & SGND (Pin 8)
Connected*
Open
* Indicates default setting
Table 16:
JB3 strap settings
Position
Description
1 & 2
DTE Shield (Pin 1) and FRGND Connected
2 & 3
DTE Shield (Pin 1) and FRGND Not Connected
1
3
JB3
1
2
3
JB4