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Note:
Turn the P a g i n g
Volume
Control
clockwise (+) to increase paging
volume,
clockwise
decrease paging volume.
120V AC
Under a normal background noise environment, set the Paging Volume Control so that the page may be heard as
required. Then set the Talk-Back Volume Control in the middle between the "+" and "-" position. Test talk-back to be
sure that the HF-2WC will switch between paging and talk-back for your desired operating range and noise level. Adjust
the Talk-Back Volume Control as necessary for your environment. The louder the ambient noise level, the more you
will have to decrease the microphone sensitivity and the smaller your talk-back range will be.
If the background noise is too loud for the HF-2WC to operate properly, you may have to add a "Push to Talk" button as
shown in the diagram below.
HF-2WC Circuit Board Layout
R9
Product Support Line...(715) 386-8666
Due to the dynamic nature of the product design, the information contained in this document is subject to change without notice. Viking
Electronics, its affiliates and/or subsidiaries assume no responsibility for errors and/or omissions contained in this information. Revisions of
this document or new editions of it may be issued to incorporate such changes.
Fax Back Doc # 480
Installation
Paging Volume Control
+
counter
(-)
to
POWER - 13.5V AC
Unused PABX/KSU
Trunk Port
Programming
CR8
Talk-Back Volume Control
-
+
HANDS-FREE TALK-BACK
PAGING SYSTEM
VIKING
ELECTRONICS
HUDSON, WI 54016
PAGING
TALK BACK
VIKING
©
MODEL HF-2WC
1
2
3
4
5
UNUSED
TRUNK
INPUT
Single
Line Phone
or
Cut this end of CR8
Normally
Closed
Button
100 1/4W
Resistor
Fax Back Line...(715) 386-4345
Printed in the U.S.A.
-
Note:
Turn the Talk-Back
Volume
Control counter
clockwise (+) to increase
m i c r o p h o n e
s e n s i t i v i t y ,
clockwise (-) to decrease
microphone sensitivity.
25AE Paging Horn
Whenever the button is pressed,
the talk-back will be activated.
Whenever the button is released,
the HF-2WC will function only as
a one-way paging unit.
ZF280370 Rev D
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