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V-9937

TONE
LEVEL
CONTROL

INPUT 3

INPUT 3
LEVEL
ADJUST

POWER
REVERSAL
LED

OUTPUT 2

OUTPUT 1

VOLUME:

OUTPUT 2

OUTPUT 1

TONE SELECT:

  V-9942
(Optional)

  V-9942
Connector

ON OFF  ON OFF

SW2

SW1

Speaker Connections: 

Speakers receiving background music: 
___ a.  Connect pin 7 of V-9937 to Tip of the 

amplified speaker assembly. 

___ b.  Connect pin 22 to Ring of the Speaker. 
___ c.  Connect pin 6 to -24VDC terminal of 

speaker (white lead if using horns). 

___ d.  Connect pin 21 to GND terminal of 

speaker (black lead of horns). 

 

Speakers not receiving background music: 
___ a.  Connect pin 9 of the V-9937 to Tip of the 

amplified speaker assembly. 

___ b.  Connect pin 24 to Ring of the speaker. 
___ c.  Connect pin 8 to -24VDC terminal of 

speaker (white lead if using horns). 

___ d.  Connect pin 23 to GND terminal of 

speaker (black lead of horns). 

Go to the Volume Adjustment section. 

 

Wiring Arrangement 2

 

Page Access: 

___ a.  Connect V-9937 pin 4 to page port Tip. 
___ b.  Connect pin 19 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. 

 

Music Input:

 

NOTE:  Background music may only be 
connected if the telephone system provides 
the appropriate inputs. 

 

___ a.  Connect music source to telephone 

system following phone system installation 
instructions. 

 

Speaker Connections: 

___ a.  Connect pin 7 of V-9937 to Tip of the 

amplified speaker assembly. 

___ b.  Connect pin 22 to Ring of the speaker. 
___ c.  Connect pin 6 to -24VDC terminal of 

speaker (white lead if using horns). 

___ d.  Connect pin 21 to GND terminal of 

speaker (black lead of horns). 

 

NOTE:  Set speaker volume controls at 
approximately 1/2 volume during installation. 

 

Volume Adjustment and Test

 

Refer to Figure 4 for location of volume controls.  
Test the system and adjust the controls as follows: 

 

NOTE:  For proper operation, the controls 
must be adjusted in the order specified. 
 
 
 
 

___ 1. 

Set the "Output 1" and the "Output 2" 
controls to approximately 1/2 volume.  Set 
the "Input 3" control fully 
counterclockwise. 

___ 2.  Connect a lineman's test set to the V-9937 

pins 1 and 16. 

___ a.  Go "off hook" and speak.  Paging should 

be heard through the speakers. 

___ b.  If paging is not heard, recheck  
 

connection. Refer to the Troubleshooting  

 Chart. 
___ c.  While speaking, adjust the individual 

speaker volume controls to the desired 
level. 

___ 3.  If using wiring Arrangement 1 with 

background music, the "Input 3" control 
may be adjusted to set the desired level of 
background music. 

___ 4.  If using wiring Arrangement 2, access the 

page port through the Telephone System 
and use the "Input 3" control to set the 
proper system page level. 

 

NOTE:  The "Output 1" and the "Output 2" 
controls may be used as master controls to 
change the system volume. 

 

Tone Module Option

 

The V-9942, Tone Module Card, may be added to 
provide two types of electronic tone signaling over 
the paging.  An installation may use one or both 
types of signaling.  Check the type of signaling 
being used: 
___ 1.  Interrupted warble tone (one second tone 

every four seconds). 

___ 2.  A single frequency non-interrupted tone. 

 

The tones are activated by connecting the 
appropriate pins together (typically through a dry 
contact closure). 
The single tone will override the warble tone if 
both are accessed at the same time.  If a page is 
in progress, the tone will be mixed with the page. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

FIGURE 5 

LOCATIONS OF SWITCHES AND CONTROLS 

 

Summary of Contents for V-9937

Page 1: ...ain control Pop suppression Override capability using C O line position or PABX loop trunk port Low level input for background music typically 17dBm Automatic background music cutoff when the page por...

Page 2: ...V 9937 Each instruction is preceded by a line Place a check on the appropriate line as the instruction is completed The instructions also include tests along the way to verify connections have been m...

Page 3: ...ng Remove the metal mounting plate from the rear of the V 9937 enclosure Using two 6 inch wood screws mount the plate in a vacant space on the backboard with the telephone system common equipment Both...

Page 4: ...ECTING BLOCK POINTS 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 24VD...

Page 5: ...ack lead of horns NOTE Set speaker volume controls at approximately 1 2 volume during installation Volume Adjustment and Test Refer to Figure 4 for location of volume controls Test the system and adju...

Page 6: ...nd pop suppression circuits Accessing this port will override inputs 2 and 3 Input 2 is transformer coupled to the V 9937 Ground must be applied to pin 3 for this input to operate provided from pin 18...

Page 7: ...ch defective device within the warranty period provided that 1 inspection by Valcom Inc indicates the validity of the claim 2 the defect is not the result of damage misuse or negligence after the orig...

Page 8: ...NOT MARKED OPTIONAL MUST BE COMPLETED V 9937 CONNECTING BLOCK FIGURE 5 WIRING CONNECTIONS FOR ARRANGEMENT 1 PAGE ONLY PAGE PLUS MUSIC 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 30 29 28 27 26 25 24 23 22 21...

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