74
Valcom, Inc.
5614 Hollins Road
Roanoke, VA 24019
USA
P. 540-563-2000
F. 540-362-9800
www.valcom.com
Diagnostic Test #3 - Manufacturing Default (ctd.)
While performing Diagnostic #3, an observer may
see the clock do the following actions:
1. The clock moves the second hand to 00
2. The clock moves the second hand around to
00 again, to verify that the hand arrived after
60 pulses.
3. The clock moves the minute and hour hands to
the next known position.
4. The clock moves the minute and hour hands
around to the same position, to verify that the
hands arrived after 720 pulses.
5. The clock moves the minute and hour hands to
12, so that the clock reads 12:00:00.
6. The clock tests frequency.
The purpose of Diagnostic #4 is to check the voltage level of the batteries on a battery-powered clock.
Diagnostic #4 may be enabled by pressing the diagnostic button four times. If the clock is performing this
diagnostic, then a green LED on the back will flash four times every three seconds. The output of the test
is displayed by the second hand.
Some examples.
Second hand is on 2, the battery level is 2.2V
Second hand is on 5, the battery level is 2.5V
Second hand is on 9, the battery level is 2.9V
Second hand is on 10, the battery level is 3.0V
Second hand is on 11, the battery level is more than 3.0V
Diagnostic Test #4 - Battery Voltage
Red
Green
Diagnostic
All Other Clocks
Transmit/Receive
Diagnostic
Green
Original Clocks
Red
Transmit/Receive
