3
3100-A2-GK41-10
November 1996
Selectable Test Jacks for
Models 3160, 3164, and 3150
Selectable test jacks have been installed to provide greater application flexibility. To determine if your device is
equipped with selectable test jacks, examine the test jack labeling shown below.
In
Out
In
Out
In
Out
NET
MON
EQPT
496-14808
In
Out
In
Out
In
Out
NET
NET
MON
EQPT
MON
494-14586
Non-Selectable Test Jacks
Selectable Test Jacks
If your device is equipped with selectable test jacks, they are connected internally as shown in Figure 4 and
Table 2. The Mon Jack (Monitor Jack) selection allows you to select either EQPT (Equipment) or NET
(Network). See Changing the Monitor Jack Selection.
NOTE
In the selectable test jacks, the default for the MON test jack is now EQPT
(Equipment). In the non-selectable test jacks, the NET MON test jack only
monitored the network.
LINE
RECEIVER
INTERNAL
CIRCUITRY
LINE
RECEIVER
TERMINAL
EQUIPMENT
(DTE)
NETWORK
NET
Out
EQPT
In
MON
Out
NET
In
EQPT
Out
MON
In
496-14875
Mon Jack: EQPT
Mon Jack: NET
Mon Jack: EQPT
Mon Jack: NET
(Selectable)
(Selectable)
Figure 4.
Selectable Test Jack Connections
