MECHANICAL
Standard Crystal Vision modules 100mm x 266mm
Weight: 175g
Power consumption: 3.8 Watts

AUDIO INPUTS
4 mono, electronically balanced
High impedance output (>20kohm)
Maximum level: +28dBu
Factory set default: 0dBFS = +18dBu or +24dBu by on-board link (0dB or -6dB gain)
Common mode rejection ratio: >74dB (20Hz to 20kHz)

AUDIO OUTPUTS
16 (4 per channel), electronically balanced
Low impedance outputs (66ohm)
Maximum level: +28dBu
Factory set default: 0dBFS = +18dBu or +24dBu by on-board link (0dB or +6dB gain)
Frequency response: +/-0.05dB (20Hz to 20kHz)
Total Harmonic Distortion (THD): >0.003% at 1kHz, +18dBu/+24dBu
Interchannel crosstalk: >-100dB

SILENCE DETECTORS
4 (1 per channel)
Set period of silence before indication from 1 to 120 seconds in 8 second increments
Set silence threshold between -18dBu and -42dBu (factory default set to -30dBu)

OVERVOLTAGE DETECTORS
4 (1 per channel)
Set overvoltage threshold between +6dBu and +28dBu (factory default set to +28dBu)

GPIs
4 outputs, 2 inputs
Outputs: active low, 330ohm resistors in series with output to drive LEDs
Indicates silence/overvoltage status per channel
Inputs: active low, 10kohm pull-up resistors to +5v
Controls if silence or overvoltage or both indications on GPI outputs

MONITORING AUDIO OUTPUTS
2 stereo (4 mono)
Connector: 3.5mm stereo jack socket
Output level: 0dBFS = +10dBu

FRONT BOARD INDICATORS
4 LEDs (1 per channel) to indicate silence/overvoltage status
2 LEDs to indicate power supply status

FRAME REAR MODULES
RM17 (1 frame slot): 4 inputs on 15-way D-Type socket and 16 outputs on 44-way high density D-Type socket

 

GAIN ADJUSTMENTS PER CHANNEL
Total adjustment: +/-12dB
Continuous multiturn pot adjustment (board front): +/-6dB
On-board links: +6dB, 0dB, -6dB

PERFORMANCE
Signal to noise ratio: >112dB, 0dB gain, 0dBFS = +24dBu; >106dB, 0dB gain, 0dBFS = +18dBu