Specifications
Frequency Response 20Hz to 20kHz +/-0.5dB, measured at 0dBu relative to 1kHz.
Noise -75dBu with input terminated in 600 ohms, by-passed IN, compress and limit OFF; -55dBu with compress IN and gain make-up at maximum.
Limit Level +4dBu to +15dBu, measured with limit recovery set at 50ms, level at +8dBu using a 1kHz sine-wave at +20dBu and +8 control adjusted to give +8dBu output.
Limit Ratio with input level at 10dBu, increased to +20dBu the change in output level should be 0.1dB, +/-0.1dB.
Attack Time: slow 4ms, +/-1ms, fast 2ms, +/-1ms being the time taken for a signal to return to within 1dB of its original value, using an increase in input level of 10dB on an input adjusted to +10dBu at 1kHz.
Limit Recovery: this is the time taken by the control voltage to reach a new value when an input at +20dBu is reduced in value by 10dB. The recovery times can be set to 50ms, 100ms, 200ms, 800ms, AUTO 1: 1500ms, AUTO 2: 3000ms (all +/-50%).
Gain Make-up settings 0 to 20dB correspond with output level +/-0.5dB.
Compression Ratio: Recovery set to 100ms Threshold to -20dBu Input 1kHz at 0dBu
For each setting of the Compress Ratio Switch the input level is increased by 10dB and the change in output level should be:
Compress Ratio Switch O/P Level Change (dBu) Tolerance (dB)
1.5 : 1 6.5 ± 1
2 : 1 5.0 ± 1
3 : 1 3.5 ± 1
4 : 1 2.5 ± 0.5
5 : 1 1.5 ± 0.5
Compression Recovery: 100ms, 400ms, 800ms, 1500ms
AUTO 1: 800ms AUTO 2: 1500ms
Distortion:
0.075% maximum (bypass IN, Compress and Limit OUT, input level at +9dBu, 1KHz).
0.2% maximum (Compress IN ratio 6:1, Gain make-up to MAX, Recovery: 800ms, Threshold –18dBu).
0.45% maximum (Limit IN, Compress OUT, Recovery 800ms. Input level: +22dBu, Threshold –18dBu).
Power Consumption: 5.3VA
