6
947939A
microphone: if using a low impedance
balanced
microphone, connect (+) lead to LZ1 and
the (-) lead to LZ2.
___c.
Connect one side of the microphone push
to talk switch to the V-9939A SW
terminal.
___d.
Connect the other side of the push to talk
switch to the GND OUT terminal.
___12. Connect –24 Vdc (BB) signal battery from
the power supply to pin 30 of the V-9937.
___13. Connect signal ground (BG) of the power
supply to pin 29 of the V-9937.
___14. Volume adjustment:
___a.
During initial system set up, set the
screwdriver adjustable volume control on
the V-9939A 1/2 turn clockwise.
___b.
Speak through the microphone and adjust
the screwdriver adjustable volume
controls on the V-9939A and output 1 of
the V-9937 to the desired page level.
___c.
Access zone through the telephone
system; adjust input 3 volume control on
the V-9937 for the desired page level.
PWR MC
HZ
RING
PWR LZ1 SW GND
OUT
M
TIP
LZ2
AB AG BB BG
-24VDC POWER SUPPLY
SWITCH
AUDIO
MICROPHONE
GND STRAP
V-9939A
ONE-WAY
AMPLIFIED
SPEAKER
ASSEMBLIES
FIGURE 6 - OVERRIDE A SINGLE ZONE WITH A V-9937
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
-24
OU
T
GND OU
T
S
IN
G
LE
TO
N
E
W
A
R
B
LE
TO
N
E
TI
P
O
U
T
2
-24
OU
T
TI
P
O
U
T
1
-24
OU
T
T
IP
INP
U
T
3
CONT
R
O
L
GND
IN
T
IP I
N
PU
T
2
T
IP I
N
PU
T
1
RING INPU
T
1
RING INPU
T
2
CONT
R
O
L
GND
OU
T
RING INPU
T
3
GROUND OU
T
RING O
U
T
1
GROUND OU
T
RING O
U
T
2
WA
RB
L
E
T
O
NE
SINGL
E
T
O
NE
GROUND IN
-24V
D
C
IN
TO A ZONE OF A
PAGE CONTROL
UNIT
B
