4RV/2
Voter Specifications
VLC
Voter Line Card Specifications
MLC
Microwave Line Card
RLC
Receiver Line Card Specifications
4RV/2
Specifications
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Voting Method: Signal-to-Noise.
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Hysteresis: Approximately
10% Factory set. See options section.
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Capacity: Four channels
expandable to 32, 4 channels per card.
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Voting Criteria: Approximately
2 db difference in signal-to-noise. (measured with low input noise levels)
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Voting Time: Continuous,
fast voting - no sampling delay, Four independent circuits working simultaneously.
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Calibration: Built-in audio
level calibrator. Test points provided.
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Input Section
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Audio in: 100 mv - 10v p-p
into approximately 10K input impedance.
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COR: Ground is the
active state (unsquelched) 12v sourced opto-isolated input
with > ~2 mA to ground active.
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Disable Inputs: Low
disabled (grounded) high enabled (open) - Same as COR inputs.
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Select Inputs: Low
Force selected (grounded)
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Vote-Lock Enable: Ground
active.
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Mixer: Audio
mixer input available for external input.
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Output Section:
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Audio: 1v p-p adjustable
with a master level pot into approximately a 5K load.
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Distortion: < 0.5% at
rated output.
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Frequency Response: +/-
2 dB 40 - 4000 Hz
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PTT: Ground is the
active state (unsquelched). Open collector NPN output to ground and will
sink not more than 50v or 100 mA.
-
Test Points:
-
(4) Audio level calibration
points - 1 per receiver on edge connector and front panel.
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(1) Calibration bus on edge
connector.
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(1) Audio output test jack
on front panel.
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Voted Outputs: +12V "VOTED"
sourced up to ~100 mA.
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Indicators: 5 LED's ( 4
on slave cards. ) 4 Bicolor Voted (green) and Receiving / Active ( red
)
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Vote-Lock time: 1 second
+ or - 0.3 seconds.
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Power Requirements: +11v
to +15v regulated at < 500 mA per 4 channels.
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Dimensions: 4.5"H x 6.8"L
x 1/2"W (4.5" x 6.5") Card only.
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Connections: 44 pin edge
connector (22 per side) gold plated fingers - 0.156" spacing - similar
to Vector R644. (not included)
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Circuit Board: Fiberglass
epoxy, double sided, tinned and gold plated contacts.
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Service: Spare (loaner)
cards available. Spare parts kit available. Field serviceable.
VLC Specifications
-
Input Audio: 600 OHM Balanced,
-30 to +2 dBm
-
COR Input: 1950 Hz Adjustable
detect frequency, approximately +/- 40 Hz. Detect bandwidth +/- 5 Hz 10
dBm range. 1950 10 to 15 dB below received audio.
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Output Audio: Unbalanced
Approximately 200 mV. Directly connecting to the 4RV Voter.
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Input Frequency Response:
+/- 2 dB 300 - 4000 Hz 600 ohm to voter.
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COR Output: Open collector.
(Low active) Directly connecting to the 4RV Voter.
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Fail Circuit: If 1950 is
not detected within 3 minutes the Associated Line will "Fail" and
become inactive.
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Indicators: 4 Red Phone
Line "Failed" indicators. 3 Minute time-out on lack of 1950 tone detection.
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Line in and out levels
front panel adjustable, tone detect frequency adjustment internal.
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Line Driver output: +3 dB
max output.
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Output Frequency Response:
+/- 3 dB 300 - 4000 Hz 600 ohm to voter. Extended range optional.
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Power Requirements: +11v
to +15v regulated at 200 mA.
-
Dimensions: 4.5"H x 6.8"L
x 1/2"W (4.5" x 6.5") Card only.
-
Connections: 44 pin edge
connector (22 per side) gold plated fingers - 0.156" spacing - similar
to Vector R644. (not included)
-
Circuit Board: Fiberglass
epoxy, double sided, tinned and gold plated contacts.
-
Service: Spare (loaner)
cards available. Spare parts kits available. Field serviceable.
MLC Microwave
Line Card
Same as VLC above without
COR functions. COR is provided from the Microwave system.
RLC Specifications
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Input Audio: >10K Impedance
10-500 mV Unbalanced.
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COR Input: Input- 0.6-10
VDC Threshold adjustable. Polarity jumper selectable.
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Output Audio: 600 OHM Balanced,
Adjustable up to 0 dBm.
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COR Output: 1950 Hz Adjustable
to -10 dBm audio or Open collector. (GND True)
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Size: 3.0" X 3.25"
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Connections: Miniature Terminal
Strip; 8 point.
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Power Requirements: +11v
to +15v regulated at 100 mA.
-
Service: Spare (loaner)
cards available. Spare parts kits available. Field serviceable.