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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/OdBu
*Line Input
0.775V/OdBu
*Rec input
0.775V/OdBu
*Mic Input
1.4mV/ -54dBu at 600 ohms
Max. Input voltage
Input
3.8VI+14dBu
*Line INPUT
3OV/+32dBu
*Rec INPUT
3OV/+32dBu
*Mic INPUT
5OmV/ -24dBu at 600 ohms
Using several inputs simultaneously results in a change of the stated voltages.
Input impedance
lnput (bal.)
2OkOhm
Input (unbal.)
lOkOhm
Line Input
2OkOhm
REC Input
2OkOhm
Mic INPUT
1,4kOhm
Output voltage
Output
0.775V/OdBu
Pre-Output
3.2V/+12dBu
Phones
3.2VI+12dBu
Max. Output voltage
Output
3.8V/+14dBu
Pre-Output
9V/+21 dBu
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-2OkHz -3/OdB
Mic Input
20Hz-16kHz -18/3dB
Others
20Hz-16kHz +0/-3dB
Signal-to-noise ratio
Input > Output
> 108dB (A-weighted)
Message
> 9OdB (A-weighted)
THD
Input > Output
< 0.03% (at 1 kHz)
Message
< 0.05% (at 1 kHz)
Data format
ADIDA converter
16 bit linear
DSP internal
24 bit
Sampling rate
35kHz
Control inputs
Ein <
±
5V = Low
Ein >
±
1OV = High
Control outputs
floating relay contacts
1 A at 24VDC
Dimensions
483 X 43.6 X 225 (W x H x D) 19in, 1 HU
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 9021 0
Input transformer
NRS 90211