100-319-200-03, Issue 3
Testing a Circuit
HTC-319 List 1
September 9, 1999
5
Figure 2.
HTC-319 List 1 Test Connections
LOOP
BACK
LOOP
THRU
SHORT
FIELD
SIDE 2
FIELD
SIDE 1
SIDE 1
T
T
T
T
R
R
R
R
CIR
-48V
R1
TP2
TP1
Test point 1
(TP1)
TP6
CO
CO
TP9
FIELD
FIELD
FRM
GND
SIDE 2
OPEN
HTC-319 L1
TEST CARD
PairGain
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
R
R
LOOP BACK
LOOP THRU
SHORT
OPEN
SIDE 1
SIDE 1
SIDE 1
SIDE 1
FIELD
FIELD
FIELD
FIELD
SIDE 2
SIDE 2
SIDE 2
SIDE 2
C. O.
C. O.
C. O.
C. O.
R
R
R
R
R
R
R
R
R
R
R
R
R
R
LOOP BACK
LOOP THRU
SHORT
OPEN
Tip
Tip
Ring
Ring
Tip
Tip
Ring
Ring
Tip
Tip
Ring
Ring
Tip
Tip
Ring
Ring
SIDE 1
SIDE 1
SIDE 1
SIDE 1
SIDE 2
SIDE 2
SIDE 2
SIDE 2
Tip
Tip
Ring
Ring
A
B
1
2
Tip
Tip
Ring
Ring
A
B
1
2
Tip
Tip
Ring
Ring
A
B
1
2
Tip
Tip
Ring
Ring
A
B
1
2
F
6
K
9
F
6
K
9
F
6
K
9
F
6
K
9
To/from
field
equipm
To/from
CO
equipment
J
5
8
Frame ground
Circuit ground
-48 V
F
LOOP
BACK
LOOP
THRU
SHORT
FIELD
SIDE 2
FIELD
SIDE 1
SIDE 1
T
T
T
T
R
R
R
R
CIR
-48V
R1
TP2
TP1
Test point 1
(TP1)
TP6
CO
CO
TP9
FIELD
FIELD
FRM
GND
SIDE 2
OPEN
HTC-319 L1
TEST CARD
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
R
R
LOOP BACK
LOOP THRU
SHORT
OPEN
SIDE 1
SIDE 1
SIDE 1
SIDE 1
FIELD
FIELD
FIELD
FIELD
SIDE 2
SIDE 2
SIDE 2
SIDE 2
C. O.
C. O.
C. O.
C. O.
R
R
R
R
R
R
R
R
R
R
R
R
R
R
LOOP BACK
LOOP THRU
SHORT
OPEN
Tip
Tip
Ring
Ring
Tip
Tip
Ring
Ring
Tip
Tip
Ring
Ring
Tip
Tip
Ring
Ring
SIDE 1
SIDE 1
SIDE 1
SIDE 1
SIDE 2
SIDE 2
SIDE 2
SIDE 2
Tip
Tip
Ring
Ring
A
B
1
2
Tip
Tip
Ring
Ring
A
B
1
2
Tip
Tip
Ring
Ring
A
B
1
2
Tip
Tip
Ring
Ring
A
B
1
2
F
6
K
9
F
6
K
9
F
6
K
9
F
6
K
9
To/from
field
equipment
To/from
CO
equipment
J
5
8
Frame ground
Circuit ground
-48 V
F