150-101-100-02, Revision 02
Overview
HTC-439 List 1
June 8, 1999
1
O
VERVIEW
This practice describes the PairGain
HiGain
Test Card HTC-439 List 1.
The HTC-439 provides a convenient method of testing Central Office (CO)
and Field Tip and Ring transmit and receive pairs from any standard T1-239
repeater slot.
F
EATURES
•
Four-position slider switch (S1) that allows you to select the kind of test
you wish to perform on the transmit (XMT) and receive (RCV) Tip and
Ring pairs on CO and field circuits:
–
Open
–
Short
–
Loop Thru
–
Loop Back (metallic)
•
Test points that provide access to Tip and Ring circuits (CO and field)
and to frame ground.
•
Miniature 210 jacks located within the J1 block that provide access to CO
and field Tip and Ring circuit sides.
•
Designed to extend beyond the front plane of the shelf or enclosure into
which the HTC-439 is inserted to permit easy access to its test points.