PairGain HTC-439, Manual, Page: 7 / 16

150-101-100-02, Revision 02 Installation
HTC-439 List 1 June 8, 1999 3
I
NSTALLATION
1 Insert the HTC-439 into the shelf slot for the channel you want to test.
2 Push the card all the way into the slot until the card is firmly seated.
T
ESTING A
C
IRCUIT
Use the HTC-439 to test circuits, as follows:
1 Set the slider switch S1 to the type of test you want to perform (Open,
Short, Loop Thru, or Loop Back).
2 Connect to test points as applicable. The connections of Tip and Ring
pairs of CO and field circuits for each setting of the switch are listed in
Table 1 on page 4 and illustrated in Figure 2 on page 5 . (Pin numbers
correspond to the edge connector pins for each circuit.)
3 Perform the selected test.
4 Monitor the circuits at the corresponding test points on the card.
5 Repeat steps 1 through 4 as required.
All wiring external to the product should follow the provisions
of the current edition of the National Electrical Code.