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Specifications DMM 4650
Operating Voltage 21.6 - 31.2VDC
Power consumption max. 18 watts (without retrofitting kits 90204)
Input voltage Input 0.775V/0dBu
*Line Input 0.775V/0dBu
*Rec Input 0.775V/0dBu
*Mic Input 1.4mV/ -54dBu at 600 ohms
Max. Input voltage Input 3.8V/+14dBu
*Line INPUT 30V/+32dBu
*Rec INPUT 30V/+32dBu
*Mic INPUT 50mV/ -24dBu at 600 ohms
* Using several inputs simultaneously results in a change of the stated voltages.
Input impedance Input(bal.) 20kOhm
Input (unbal.) 10kOhm
Line Input 20kOhm
REC Input 20kOhm
Mic INPUT 1,4kOhm
Output voltage Output 0.775V/0dBu
Pre-Output 3.2V/+12dBu
Phones 3.2V/+12dBu
Max. Output voltage Output 3.8V/+14dBu
Pre-Output 9V/+21dBu
Phones 9V/+21dBu
Output impedance Output (bal.) 136 Ohm
Output (unbal.) 68 Ohm
Pre-Output 220 Ohm
Phones 220 Ohm
Frequency response Input > Output 20Hz-20kHz -3/0dB
Mic Input 20Hz-16kHz -18/3dB
Others 20Hz-16kHz +0/-3dB
Signal-to-noise ratio Input > Output > 108dB (A-weighted)
Message > 90dB (A-weighted)
THD Input > Output < 0.03% (at 1kHz)
Message < 0.05% (at 1kHz)
Data format AD/DA converter 16 bit linear
DSP internal 24 bit
Sampling rate 35kHz
Control inputs E
in
< ±5V = Low
E
in
> ±10V = High
Control outputs floating relay contacts 1A at 24VDC
Dimensions 483 X 43.6 X 225 (W x H x D) 19in, 1HU
Weight 4kg
Retrofitting kits
Port C or D NRS 90204
4 control inputs and outputs
Memory extension NRS 90205
message memory extension
Output transformer NRS 90210
Input transformer NRS 90211
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