Microcsu/Dsu Db25 Rear Strap Settings - Black Box MT160A Manual

4.3.1 M CSU/DSU DB25 R
ICRO
Figure 20 shows strap locations for the MicroCSU/DSU DB25 Rear (DB25/RJ-
48S). These straps determine various grounding characteristics for the terminal
interface and twisted-pair lines.
(Not Used)
Table 3 provides an overview of interface strap functions for the rear interface
cards. Following this overview is a detailed description of each strap's function.
Strap Function
JB3 DTE Shield (Pin 1) & FRGND
JB4 FRGND & SGND
NOTE: * indicates factory default
S
EAR
JB2
Figure 20. DB25/RJ-48S strap locations.
Table 3. Summary of strap settings
S
TRAP ETTINGS
Position 1 & 2
Connected
Connected
CHAPTER 4: Configuration
JB3
(Peg 1 on top)
JB4
(Peg 1 on left)
Position 2 & 3
Open*
Open*
31