Wiring Arrangement - Valcom V-9937 User Manual

Connecting Arrangements
There are two possible ways this equipment may
be used as described in the following paragraphs.
Place a check by the arrangement being used in
this installation.
___ 1. Arrangement 1:
Access Method: Electronic Key or PABX
page port with "page enable" dry relay
contact.
Override Access: Electronic Key C. O.
button or PABX loop start trunk.
Music: Input background music to V-
9937.
Additional Features: Pop suppression
and AGC on page and override. Two
outputs, one with music and one without.
Tone signaling option.
Arrangement 2:
___ 2.
Access Method: Electronic Key or PABX
page port (no control leads required).
Override Access: Electronic Key C .O.
button or PABX loop start trunk.
Music: Background music may be
provided if the telephone system provides
the needed inputs and switching.
Additional Features: Pop suppression
and AGC on override only. Tone signaling
option
.
15
30
FIGURE 3
LOCATION AND NUMBERING OF CONNECTION BLOCK
15 14 13 12 11 10 9
30 29 28 27 26 25 24 23
FIGURE 4
CONNECTING BLOCK POINTS
1
16
8 7 6 5 4 3 2 1
22 21 20 19 18 17 16
Wiring (Arrangements 1 and 2)
Refer to Figure 2 for location and numbering of
connection block and Figure 3 for connecting
block pin outs.
___ 1. Unplug power supply.
___ 2. Connect -24VDC "B" battery (may be
referred to as "-" or "signal battery") from
power supply to pin 30 on V-9937.
___ 3. Connect 24VDC Ground ("B" ground, "+"
or "signal ground") from power supply to
pin 29.
___ 4. Connect 24VDC Ground from power
supply to telephone system Ground.
___ 5. Power test:
(a) Plug in power supply.
(b) If power reversal LED is lit:
(1) Unplug power supply;
(2) Reverse connections on pins 29
and 30;
(3) Go to step 6.
___ 6. Unplug power supply.
NOTE: Power supply pins 6, 21, 8 and 23 for
external speaker power are provided as a
convenience. When using large numbers of
speakers with the V-9937, the speakers should
be connected directly to their respective power
source.

Wiring Arrangement 1

Page Access:
___ a. Connect V-9937 pin 2 to page port Tip.
___ b. Connect pin 17 to page port Ring.
Override Access:
___ a. Connect V-9937 pin 1 to override trunk (or
override line key) Tip.
___ b. Connect pin 16 to override Ring.
Control Leads:
___ a. Connect V-9937 pin 3 to one side of page
port dry contact closure.
___ b. Connect pin 18 to the other side of the dry
contact closure.
Music Input:
___ a. Connect pin 4 of the V-9937 to one side of
the music source output.
___ b. Connect pin 19 to the other side of the
music output.
: Use a low level music source such as a
NOTE
tuner. DO NOT connect the output of a high
power amplifier to the Valcom unit.
4