3
MODEL SO-24A
VIKING
©
24 LINE
SERVICE OBSERVING UNIT
VIKING
ELECTRONICS
HUDSON, WI 54016
POWER
13.8 VAC
STATUS LED
1 2 3
OFF
MASTER
PROGRAM
RECORD CONTROL
RJ21X
LINE / STATION CONNECTIONS
TAPE RECORDER
CONNECTIONS
MULTI-UNIT
COMMUNICATIONS
ON
OFF
INPUT
OUTPUT
RECORD
CONTROL
OUT
AUDIO
OUT
MODEL SO-24A
VIKING
©
24 LINE
SERVICE OBSERVING UNIT
VIKING
ELECTRONICS
HUDSON, WI 54016
POWER
13.8 VAC
STATUS LED
1 2 3
OFF
MASTER
PROGRAM
RECORD CONTROL
RJ21X
LINE / STATION CONNECTIONS
TAPE RECORDER
CONNECTIONS
MULTI-UNIT
COMMUNICATIONS
ON
OFF
INPUT
OUTPUT
RECORD
CONTROL
OUT
AUDIO
OUT
Emerson # 66M1-50
Siemon # 66M150
Suttle # SE-66M1-50-C5
To 24 Monitored
Stations or Phones
C.O. Lines
RJ21X Male Jack
(not included)
or
24 Analog
PABX/KSU
Stations
13.8V AC
Adapter
(included)
Digital Recorder (not included)
Installed on Master Only
(3/32" cable included)
(1/8" cable included)
Unused
PABX/KSU
Trunk Port
Observing
Phone
13.8V AC
Adapter
(included)
RJ21X Male Jack
(not included)
Add up to 8 more SO-24A modules
for a total of 240 stations.
Master Module
ON
OFF
1
ON
OFF
1
DIP Switch 1
must be ON
Master Module
DIP Switch 1
must be OFF
Slave Module
RAD-AMP
Remote Access Device
(DOD# 415)
Remote
Observing
Bridge Clip the 24 Pairs
Bridge Clip the First 24 Pairs
or
Punch Down Terminal
Block with Split Center
(not included)
Emerson # 66M1-50
Siemon # 66M150
Suttle # SE-66M1-50-C5
C.O. Lines
24 Analog
PABX/KSU
Stations
Punch Down Terminal
Block with Split Center
(not included)
or
To 24 Monitored
Stations or Phones
AMPLIFIED REMOTE ACCESS DEVICE
VIKING
©
MODEL RAD-AMP
LINE IN
LINE OUT
OFF ON
Pins 25 & 50
Tip (V/S) and
Ring (S/V)
Pins 25 & 50 not used
on Slave modules
Note:
Connect
OUTPUT
ports on slave modules to the
INPUT
ports of the superced-
ing
SO-24A
’s, continuing from
module to module to the
Master module using the
supplied modular cords.
Slave Module
IMPORTANT:
Each slave module MUST be
programmed with its own unique set of dial up codes.
B. Multi-Module Wiring
