MECHANICAL
Standard Crystal Vision module 100mm x 266mm
Weight: 175g
Power consumption: 12 Watts

AUDIO INPUTS
Four mono, electronically balanced
High impedance output (>20 kohm)
Maximum level: +28dBu
Factory set default: +24dBu; 0dBFS = +18dBu or +24dBu by on board link

AUDIO OUTPUTS
16 (four per channel), electronically balanced, using RM17 or 'easywire' RM37 frame rear modules
Inputs and outputs are flexible and can be configured in five different ways
It is also possible to use unbalanced audio
Low impedance outputs: 100 ohm
Maximum level: +25dB
Factory set default: 0dBFS = +24dBu

GAIN ADJUSTMENTS PER CHANNEL
Total adjustment: +/-12dB
Continuous adjustment: +/-6dB using multiturn pot adjustment
Link adjustment: +6dB, 0dB, -6dB (on board link settings)

PERFORMANCE
Signal to noise ratio: 106dB, 0dB gain, 0dBFS = +24dBu (20Hz to 20kHz)
Frequency response: +/-0.05dB (20Hz to 20kHz)
Total Harmonic Distortion (THD): <0.003% at 1kHz, +18dBu/+24dBu
Common mode rejection: >74dB (20Hz to 20kHz)
Interchannel crosstalk: <-94dB, 10kHz

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

OVERVOLTAGE DETECTORS
Four (one per audio channel)
Set overvoltage threshold between +6dBu and +25dBu (factory default set to +25dBu)

MONITORING AUDIO OUTPUTS
Two stereo (four mono) via two 3.5mm stereo jack sockets
Output level: 0dBFS = +10dBu

GPI INPUT LEVELS
Active pull to ground, pulled up to +5V through 10 kohm

GPI INPUTS
Two GPI inputs select silence or overvoltage or both indications on GPI outputs

GPI OUTPUT LEVELS
Electrically: Open collector transistors 48V, 330 ohm current limit resistors

GPI OUTPUTS
Four GPI outputs indicate silence/overvoltage status per channel

LED INDICATION
Four LEDs (one per channel) to indicate silence/overvoltage status
Two LEDs to indicate power supply status

LOCAL CONTROL
Power rail monitoring, channel gain adjustment, silence threshold, silence time and overvoltage level set by switches at board edge
On board jumper links enable the AADA416FM to be matched to different maximum operating levels
Three jumper links can link audio channels together to provide a variety of input/output configurations