Operation; Technical Assistance; Wiring Instructions - Valcom V-2000A User Manual

__a) The -24VDC outputs are not connected to
each other;
__b) Each one-way amplified speaker is
connected to only one power source.
__ 8. Set battery feed slide switch to the "ON"
position on the V-2000A.
__ 9. Plug in the power cord.

Wiring Instructions

(For Telephone System Page Port Access)
(See Figure 3)
__ 1. Connect one side of the page port audio
output of the telephone system to the Tip
screw terminal of the V-2000A.
__ 2. Connect the other side of the page port
audio output to the Ring screw terminal of
the V-2000A.
__ 3. Connect Tip of the one-way amplified
speakers to one of the screw terminals on the
V-2000A marked Signal Out.
__ 4. Connect Ring of the one-way amplified
speakers to the remaining Signal Out screw
terminal on the V-2000A.
__ 5. Connect the -24VDC terminal or lead of the
one-way amplified speakers to the -24VDC
screw terminal of the V-2000A.
__ 6. Connect the GND terminal or lead of the
one-way amplified speakers to the GND
screw terminal of the V-2000A.
NOTE: The Valcom V-2000A provides external power
of 12 power units (600mA of -24VDC) to operate
Valcom one-way amplified speakers. Additional
power supplies are required for a quantity of speakers
using power over the 12 power units. When using
additional power supplies, make certain:
__a) The -24VDC outputs are not connected;
__b) Each one-way amplified speaker is
connected to only one power source.
__ 7. Set the battery feed slide switch to the
"OFF" position on the V-2000A.
__ 8. Plug in the power cord.
Optional Connections
Music Connections - Connect the output of a low
level music source to the screw terminals marked
"Music" on the input terminal strip on the V-2000A.
Adjust the music volume control on the V-2000A to
the appropriate level.

OPERATION

General
When the V-2000A is connected to a C. O. line
position or a loop start trunk port, a Tip and Ring
battery feed is provided when the battery feed switch
is in the "ON" position. The voice switching circuit is
turned on when the person making the page begins to
speak. Background music, if connected, will be
turned off and the persons voice will be present on
the output. The voice switching circuit remains on as
long as the person is speaking. When the page is
completed or the person stops speaking for more than
3 seconds, the paging circuit is turned off and
background music is restored to the output. Note:
When the V-2000A is connected to a telephone
system page port, the battery feed switch should be
in the "OFF" position. The operation of the unit is
the same.

TECHNICAL ASSISTANCE

General
When trouble is reported, verify that power is being
supplied to the unit and there are no broken
connections. Check voltages for proper polarity to
the one-way amplified speakers.
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, several clip leads
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-2000A is not field repairable. 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:
Repair and Return Dept.
5614 Hollins Road
Roanoke, VA 24019-5056
4
Valcom, Inc.