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Reference Monitors User Handbook
REFERENCE MONITORS RM-4C8
REFERENCE MONIT
ORS RM-4C8
2
USB Remote Control
A Type B USB socket carries a standard Universal Serial Bus interface via which advanced
configuration options may be set and many functions may be remotely controlled.
The RM-4C8 will interface directly with personal computer USB ports using a standard USB
cable. On first connection, the user will be prompted to install the necessary USB driver
(supplied), following which the USB connection behaves as a “virtual serial port” with
identical data format and command protocol as the RS232 remote control interface.
Sonifex SCi software, when installed on a suitable PC, provides straightforward graphical
access to all remote control and configuration options via both RS232 and USB interfaces.
Alternatively, commands may be issued from any text-based terminal program (e.g.
Hyperterminal) or custom software may be developed for specific requirements – see the
section of this manual on the serial command protocol for further information.
Sonifex SCi software is available free of charge from the sonifex website -
www.sonifex.co.uk
Technical Specification RM-4C8
Inputs
Number of Channels:
8 x analogue or AES/EBU digital inputs (autoselecting).
Max Level (0dB Input Gain): +18dBu (analogue)/0dBFS (digital).
CMRR:
> 60dB typical
Input impedance:
20kΩ (analogue)
110 Ω (digital with termination switchable).
AES/EBU Sample Rate:
32 to 192kHz, converted internally to 48kHz.
Input Gain:
0, +6, +12 or +18dB digital gain (switchable).
Selection:
2 x Front panel rotary controls with indicator LEDs.
Line Level Outputs
Audio Outputs:
1 x stereo analogue or AES/EBU digital (switchable)
Gain re Selected Input:
Unity or variable, following volume control (switchable)
Maximum Output Level:
+18dBu (analogue)/0dBFS (digital)
Output Impedance:
<50 Ω (analogue)/110 Ω (digital)
AES/EBU Sample Rate:
48kHz
Distortion:
<0.02% (1kHz, +8dBu output)
Noise:
-84dB RMS, unity gain ref +8dBu output
Frequency Response:
20Hz-20kHz +0/-0.5dB