3.3.2 Model 1001RCM13445 Rear Card Strap Settings
Figure 7 shows the strap location for the Model 1001RCM13445 (M/34/RJ-45) rear card. This strap determines whether Signal Ground and Frame Ground will be connected.
JB4
123
Figure 7. M/34/RJ-45 strap locations
SGND & FRGND (JB4)
In the connected position, this strap links Signal Ground and frame ground. In the open position, signal ground is disconnected from frame ground.
JB4
Position 1&2 = SGND and FRGND Connected*
Position 2&3 = SGND and FRGND Not Connected
*indicates default setting
3.3.3 Model 1001RCM11545 Rear Card Strap Settings
Figure 8 shows strap locations for the Model 1001RCM11545 (DB-
15)rear cards. These straps determine various grounding characteristics for the terminal interface and twisted pair lines. JB3 and JB4 are user configurable.
Figure 8. 1001RCM11545 strap locations
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.
INTERFACE CARD STRAP SUMMARY TABLE #2
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
DTE Shield (DB-15 Pin 1) & FRGND (JB3)
In the connected position, this strap links
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
23 | 24 |