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B. Ground to Loop Start Converter
The ground start converter in the PF-6A will only work properly when connected in series with
the ground start trunks as shown below.
Incoming
C.O.
Ground Start
Lines
Trunks
1
2
3
4
5
6
Important: Pin 50 must be connected to a
good earth ground for the PF-6A to function
properly with ground start lines.
The DIP switches may be used to program loop start or ground start lines. You may also use DIP switch 1 to toggle
between normal and bypass mode for testing purposes.
1
2
3
4
TEST
AUTOMATIC LINE
TRANSFER SWITCH
EXTERNAL
ALARM
VIKING
MODEL PF-6A
POWER
ACTIVE
VIKING ELECTRONICS, INC. HUDSON, WI 54016
Note: The C.O. lines must be connected in
the correct polarity.
Line
Pins
+
Tip
T1T-IN
26
-
Ring
T1R-IN
1
+
Tip
T2T-IN
30
-
Ring
T2R-IN
5
+
Tip
T3T-IN
34
-
Ring
T3R-IN
9
+
Tip
T4T-IN
38
-
Ring
T4R-IN
13
+
Tip
42
T5T-IN
-
Ring
T5R-IN
17
+
Tip
T6T-IN
46
-
Ring
T6R-IN
21
GND
50
EARTH GROUND (V/S)
Programming
RJ21X
©
Color
Line
W/BL
S1T-OUT
BL/W
S1R-OUT
S2T-OUT
W/S
S/W
S2R-OUT
R/BN
S3T-OUT
BN/R
S3R-OUT
BK/G
S4T-OUT
G/BK
S4R-OUT
S5T-OUT
Y/O
S5R-OUT
O/Y
S6T-OUT
V/BL
S6R-OUT
BL/V
V/S
Important:
connect the power
adapter when using the
PF-6A in the Ground to
Loop Start application.
Dip Switch ON/OFF
OFF
1
ON
OFF
2
ON
OFF
3
ON
OFF
4
ON
Loop Start
Lines Out
Pins
Color
29
W/BN
Tip
4
BN/W
Ring
33
Tip
R/G
8
Ring
G/R
37
Tip
BK/O
12
Ring
O/BK
41
Y/BL
Tip
16
BL/Y
Ring
45
Y/S
Tip
20
S/Y
Ring
V/BN
Tip
49
BN/V
Ring
24
Do N O T
1
2
3
4
TEST
AUTOMATIC LINE
TRANSFER SWITCH
EXTERNAL
ALARM
VIKING
MODEL PF-6A
POWER
ACTIVE
RJ21X Male
Connector
(not included)
Description
Normal operation
Bypass mode for testing
Assigns lines 1, 2, 3 to loop start
Assigns lines 1, 2, 3 to ground start
Assigns lines 4, 5, 6 to loop start
Assigns lines 4, 5, 6 to ground start
Not used
Not used
PABX/KSU
1
2
3
4
5
6
RJ21X
©
VIKING ELECTRONICS, INC. HUDSON, WI 54016
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