Issue 3
1 947059
V-9964
Digital Feedback Eliminator/Message Stacker
General Design
The V-9964 is designed to eliminate acoustic
feedback and act as a message stacker. When
a page is made, the message is digitized and
saved. Upon completion of the live page, the
message is released for broadcast over the
speakers. While a message is being broadcast,
a second message may be recorded.
Additionally, up to four V-9964 units may be
chained together to allow up to eight messages
to be simultaneously processed.
Specifications
Features
• Automatic Gain Control (AGC)
• Adjustable VOX sensitivity
• Compatible with Valcom Multi-Zone Control
Units and Station Adaptors
• Two input channels: Switch selectable
primary and priority, or two channels with
equal priority; both inputs are switch
selectable for Loop Start or VOX operation
• Two audio outputs:
600 Ohms with loop supervision to a page
control unit or 8 Ohms line level output to
amplified speakers
• Background music input
• Total of three normally open relay contacts
for PLAY, RECORD and BUSY modes (one
contact each)
• LED status indicators for POWER,
RECORD, PLAY and BUSY
• Dip switch option programming
• Message abort feature
Access
• Vacant Loop Start Trunk Port
or C. O. Line Port
• Page Port
• Line Level Audio Feed
• An adaptor is required for C. O. Line or
Station access (see V-9970 or V-9940)
Dimensions/Weight
• 11.76" H x 7.10" W x 1.72" D
(29.87cm H x 18.03cm W x .37cmD)
• 2.6 lbs. ( 1.18Kg )
Nominal Specifications
Power requirement: 24VDC 200mA filtered
Input impedance: 600 Ohms
Input level: -10dBm
Loop Output impedance: 600 Ohms
Line Output impedance: 8 Ohms
Output level: -10dBm
VOX sensitivity: -20dBm to -35dBm
Message release time: 3 seconds after
Last sensed audio
Maximum recorded page time: 60
seconds
(30 seconds per page in call stacker Mode)
Frequency response:
Page 80Hz to 7kHz
Background Music 50Hz to 17kHz
Environment
Temperature: 0 to +40°C +32 to +104°F
Humidity: 0 to 80% non-precipitating
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