Power Requirements - Valcom V-9940 User Manual

NOTE: When used with a PABX, the PABX
must not return any tones to the called party
after calling party disconnect on a station to
station call.
FIGURE 1
BLOCK DIAGRAM OF A TYPICAL PABX INSTALLATION
Capacity
•
Each V-9940 provides one zone of paging
(when connected to its own PABX station
number).
•
Use a V-9940 and a station number per
zone for multi-zone paging behind a PABX.
•
An additional station number and V-9940
may be used to provide all call or override in
a one-way multi-zone system behind a
PABX.
•
One V-9940 may be used with a Valcom
multi-zone page unit to provide up to 36
zones of paging on Centrex or central office
lines (DTMF signaling only).
Dimensions/Weight
•
8.20" H x 4.55" W x 2.30" D
(20.83cm x 11.56cm x 5.84cm)
•
1.7 lbs. (0.77 kg)

Power Requirements

-21.5 to -26VDC "B" Battery, 200mA maximum
(Valcom VP-624B Class 2 power source
recommended).
Environment
Temperature:
Humidity: 0 to 85% (non-precipitating)
Specifications
Tip and Ring Input:
Voltage for Ring Trip:
Ring Trip Timing:
Open Loop Detect:
0 to +50°C
600 Ohms
75-105VAC
150ms
150ms starting 1
2
Audio Sense Release:
seconds after audio drops below -22dBm
Time Out Release: 1, 4, 8, 16, 32 or 64 seconds
Manual Reset:
Output 1:
Impedance:
Page Level Output Level:
Music Level Output Level:
Output 2:
Impedance:
Page Level:
Music Level:
Music Source:
Answer Verification Tone:
Form C Contacts:
DESIGN
General
The Valcom V-9940 Expandable Station Level
Page Adapter is designed to provide access to
paging from a standard PABX station number, a
Centrex number or a Central Office line. It
should not be used on coin service lines or party
lines. The V-9940 may be directly connected to
Valcom One-Way Amplified speaker assemblies
or may be used in conjunction with Valcom one
zone or multi-zone page adapters. The
following sections describe possible
arrangements and detail the equipment
required.
When One-Way Amplified Speaker Assemblies
are specified, consult the Valcom catalog for the
style desired. Once the style and quantity of
speakers are determined, select the appropriate
power supply after referring to the Valcom
One-Way Paging VSP or the Marketing Guide.
PABX Station Level Paging
NOTE: Before proposing Station Level
Paging, perform the following test:
1. Dial between two stations on the PABX and
answer the call.
2. Have the called party keep listening while
the calling party hangs up.
3. After calling party release, what does the
called party hear?
If the PABX IMMEDIATELY returns any type of
tones to the called party (dial tone, reorder tone,
second after ring trip
4, 8, 16, 32 or 64
25ms ground
600 Ohms
Input Level
-1dB
Input Level
8 Ohms
-10dBm
-17dBm
8 to 600 Ohms
-10 to -18dBm
500Hz: 250ms On;
250ms Off
30VDC, 2.0 Amps or
125VAC, 1.0 Amp