Paradyne HotWire 7925 User Manual page 52

Switchpacks and Jumpers
Switchpack S1
ON
1 2 3 4 5 6 7 8
Position Settings*
1 OFF = CP
ON = CO
2 OFF = AMI line
encoding
ON = HDB3 line
encoding
3 OFF = Loops A and B
ON = Loop A
4 Must be OFF when
in Switchpack Mode
5 OFF = 75 ohm line
build-out
ON = 120 ohm line
build-out
6, 7 Must be OFF when
in Switchpack Mode
8 OFF = Unframed
ON = Framed
* Default in bold
Figure C-1. G.703-Compatible Unit Switchpack and Jumper Locations
C-2
P1 P10
P8
P9
HDSL Line Jack
Positions 4, 6, 7 on S1 must be OFF when in Switchpack Mode.
P6 and P7 must be placed in the same position (both 1-2 or both 2-3).
C33 and C31 must be placed in the same position (both 1-2 or both 2-3).
C33 and C31 may also be labeled P13 and P14.
Pin 1 on most jumpers is labeled on the board. However, Pin 1 on jumpers
C31 and C33 is the pin closest to the board edge.
The ON position is labeled on the switchpack.
June 1997
VT100 Terminal
Modular Jack
P3
S1
P6
P7
C31
C33
P12
Jumper P11
Pins* Settings*
1-2 Terminal Mode
2-3 Switchpack Mode
Jumpers P6, P7
Pins* Settings*
1-2 120 ohm line
build-out
2-3 75 ohm line
build-out
Jumpers C31, C33
Pins* Settings*
1-2 75 ohm line
build-out
2-3 120 ohm line
build-out
97-15266-02
7925-A2-GB20-30
PRELIMINARY DRAFT