Adjustable Jumper Settings
Every version of the digital clock contains a set of jumpers which can be moved to change a particular
setting. The functions and positions of each jumper are described below:
Left Position
Pins 1 & 2
Jumper 1
12 Hour Time
(Default)
Jumper 2
Display High
Brightness
(Default)
Jumper 3
Display Time Only
(Default)
Jumper 4
DO NOT TOUCH
(Default)
Jumper 5
DO NOT TOUCH
(Default)
Jumper 6
Clock accepts
sync-wire inputs
(Default)
To manually enable or disable the first three jumpers, refer to the section of this manual labeled "Manual
Controls" and refer to Setting 15.
Right Position
Pins 2 & 3
24 Hour Time
Display Low
Brightness
Alternate display
between Time
and Date
DO NOT TOUCH
DO NOT TOUCH
DO NOT USE
Valcom, Inc.
5614 Hollins Road
Roanoke, VA 24019
USA
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P. 540-563-2000
F. 540-362-9800
www.valcom.com
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