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B. Headsets
Connect the receive pair (typically the inside pair) of an Electronic or Digital phone handset jack, using the special "T"
adapter provided, to the "LINE IN" jack (or hardwire to the screw terminals), of the VR-1B. Plug the 12V DC power sup-
ply into the VR-1B's "12VDC" jack (or hardwire to the screw terminals). When audio going to the handset or headset is
detected, the VR-1B will flash to show others that you are on the phone.
Adjust the sensitivity with the
trim pot if necessary. Turn
clockwise to increase sensitivity.
C. Electronic and Digital Phones
Connect the speaker leads of an Electronic or Digital phone to the "LINE IN" jack (or hardwire to the screw terminals)
of the VR-1B as shown below. Plug the 12V DC power supply into the VR-1B's "12VDC" jack (or hardwire to the screw
terminals). The speaker may be disconnected if a resistor of equal value is substituted. The VR-1B will flash to indicate
ringing.
Adjust the sensitivity with the
trim pot if necessary. Turn
clockwise to increase sensitivity.
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Due to the dynamic nature of the product design, the information contained in this document is subject to change without notice. Viking Electronics, and its affiliates and/or subsidiaries
assume no responsibility for errors and omissions contained in this information. Revisions of this document or new editions of it may be issued to incorporate such changes.
DOD 697
Internal View of the VR-1B
12V DC
Adapter
(included)
Internal View of the VR-1B
12V DC
Adapter
(included)
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(2) #6x3/4 panhead
screws (included)
C3
C1
R2
C2
R15
(2) #6x3/4 panhead
screws (included)
C3
C1
R2
C2
R15
8
6
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Printed in the U.S.A.
Electronic/Digital Phone
(not included)
To Handset
Jack on Phone
Special "T"
Adapter
(included)
Internal View of a Typical
Key Set Telephone
Red
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Headset
(not included)
Green
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ZF302990 Rev A
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