4RV/2 Specifications

• Voting Method: Signal-to-Noise.
• Hysteresis: Approximately 10% Factory set. See options section.
• Capacity: Four channels expandable to 32, 4 channels per card.
• Voting Criteria: Approximately 2 db difference in signal-to-noise. (measured with low input noise levels)
• Voting Time: Continuous, fast voting - no sampling delay, Four independent circuits working simultaneously.
• Calibration: Built-in audio level calibrator. Test points provided.
• Input Section
• Audio in: 100 mv - 10v p-p into approximately 10K input impedance.
• COR:  Ground is the active state (unsquelched)  12v sourced opto-isolated  input with > ~2 mA to ground active.
• Disable Inputs:  Low disabled (grounded)  high enabled (open) - Same as COR inputs.
• Select Inputs:  Low Force selected (grounded)
• Vote-Lock Enable: Ground active.
• Mixer:  Audio  mixer input  available for external input.
• Output Section:
• Audio:  1v p-p adjustable with a master level pot into approximately a 5K  load.
• Distortion: < 0.5% at rated output.
• Frequency Response: +/- 2 dB 40 - 4000 Hz
• 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.
• (1) Calibration bus on edge connector.
• (1) Audio output test jack on front panel.
• Voted Outputs: +12V "VOTED" sourced up to ~100 mA.
• Indicators: 5 LED's ( 4 on slave cards. ) 4 Bicolor Voted (green) and Receiving / Active ( red )
• Vote-Lock time: 1 second + or - 0.3 seconds.
• Power Requirements: +11v to +15v regulated at < 500 mA per 4 channels.
• 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 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.
• Output Audio: Unbalanced Approximately 200 mV. Directly connecting to the 4RV Voter.
• Input Frequency Response: +/- 2 dB 300 - 4000 Hz 600 ohm to voter.
• COR Output: Open collector. (Low active) Directly connecting to the 4RV Voter.
• Fail Circuit: If 1950 is not detected within 3 minutes the Associated Line will  "Fail" and become inactive.
• Indicators: 4 Red Phone Line "Failed" indicators. 3 Minute time-out on lack of 1950 tone detection.
•  Line in and out levels front panel adjustable, tone detect frequency adjustment internal.
• Line Driver output: +3 dB max output.
• Output Frequency Response: +/- 3 dB 300 - 4000 Hz 600 ohm to voter. Extended range optional.
• 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

• Input Audio: >10K Impedance 10-500 mV Unbalanced.
• COR Input: Input- 0.6-10 VDC Threshold adjustable. Polarity jumper selectable.
• Output Audio: 600 OHM Balanced, Adjustable up to 0 dBm.
• COR Output: 1950 Hz Adjustable to -10 dBm audio or Open collector. (GND True)
• Size:  3.0" X 3.25"
• Connections: Miniature Terminal Strip; 8 point.
• Power Requirements: +11v to +15v regulated at 100 mA.
• Service: Spare (loaner) cards available.  Spare parts kits available. Field serviceable.