2
applicable instructions for control equipment or any
other equipment used.
Precautions
All precautions have been taken at the factory to
insure that the equipment functions properly. Please
observe the following precautions or the equipment
may be damaged and the warranty voided.
a. Unplug the power supply before connecting any
wires or cables to the control units connecting
block. With power ON, accidental bridging of two
terminals with a wiring tool may damage electronic
circuits.
b. Do not use a lamp tester to check signals. Use a
voltmeter. A lamp tester, when first applied is a
short circuit to electronic circuits.
c. Do not apply power to the control unit until all
connections have been double -checked.
NOTE: The V-9933A cannot be used to control
music or on an audio zone with background
music.
Mounting
a. Select mounting location central to the noise
producing equipment.
b. Carefully unpack the unit from the carton and
inspect.
c. Unsnap cover from base and mount base to wall
using pan head screws.
Connections
Refer to Figure 2 while performing the following:
a. Connect the page control unit speaker output to T
and R input of V-9933A.
b. Connect the input of amplified speaker to T and R
output of V-9933A.
c. Connect power supply -24VDC(-) and GND(+) to
-24VDC and GND terminals on V-9933A.
d. Connect optional remote microphone (V-9934) to
“Ext Mic In” terminals.
Set-Up and Adjustment
a. Complete all connections to page control unit, V-
9933A, one-way amplified speakers and power
supply. Do not activate power supply until step c.
b. 1) Set the sensitivity adjustment fully clockwise
for minimum ambient nois e environment.
2) Turn dip switch 1 ON (Setup) and set dip
switches 2 and 3 to the desired range; typical
range would be 2 OFF, 3 ON=30dB (See
Chart 1).
3) Set switch 4 to appropriate use.
c. Apply power to the V-9933A. LEDs 8, 4, 2 and 1
should briefly light in sequence and then go off. If
any LEDs remain lit, then a failure is indicated;
repeating setup steps is recommended.
d. With the ambient noise at a minimum and no
active program on the input, turn the sensitivity
adjustment counter-clockwise until LED 1
illuminates. Make a test page and adjust the page
volume controls to a suitable volume. If
necessary, the sensitivity adjustment may be
increased. However, it is not desirable for all 4
LEDs to be lit during normal operation.
e. Return dip switch 1 to the OFF position.
f. Installation and set-up now complete.
NOTE: After adjusting “sensitivity adjust”
(microphone gain), wait 20 seconds before
executing a test page (See Troubleshooting
Chart, Table 1).
TECHNICAL ASSISTANCE
When trouble is reported, verify that power is being
supplied to the unit and there are no broken
connections. Check voltages for proper polarity on
terminals.
Table 1 identifies symptoms of some possible problems
with solutions. If a spare unit is available, continue to
troubleshoot by substituting the spare unit for the
suspected defective unit.
Assistance in troubleshooting is available from the
factory. When calling, you should have a VOM and a
telephone test set available and be calling from the job
site. Call (540) 563-2000 and ask for Technical Support,
or call (540) 767-1555 for Valcom 24-hour Faxback
System or visit our website at http://www.valcom.com.
The V-9933A is not field repairable.
Valcom equipment
contains no user serviceable parts inside.
Valcom,
Inc. maintains service facilities in Roanoke, VA.
Should repairs be necessary, attach a tag to the unit
clearly stating your company name, address, phone
number, contact person and the nature of the problem.
Send the unit to:
Valcom, Inc.
Repair and Return Dept.
5614 Hollins Road
Roanoke, VA 24019-5056
TABLE 1 - TROUBLESHOOTING CHART
SYMPTOMS
POSSIBLE SOLUTIONS
