20
Reference Monitors User Handbook
REFERENCE MONITORS RM-2S4 & RM-2S10
REFERENCE MONIT
ORS RM-2S4 & RM-2S10
1
The SPEAKER MUTE input mutes the speakers in the Reference Monitor. Audio is still
present at the headphone and line outputs and the front panel modifiers affect this audio
as normally.
Note: this function is operational from firmware version V1.116 and onwards.
The DIM input reduces the loudspeaker/headphone level by 10dB while held low (for
example, whilst an external talkback system is active). The front panel DIM button
illuminates to indicate that DIM is asserted.
Asserting the Alarm Reset input by pulling it low resets any active Alarm outputs to their
untriggered states and allows them to monitor for new alarm conditions.
RS232 Remote Control
A 9-way female D-type connector carries a standard RS232 interface via which advanced
configuration options may be set and many functions may be remotely controlled. The pin
assignations are as follows:
Pin 2:
Data transmit
Pin 3:
Data receive
Pin 5:
Ground
All other pins are unused.
The RM-2S4 and RM-2S10 will interface directly with personal computer serial ports at
standard RS232 signal levels using a straight-through cable. The data format is 19200 baud
with 8 data bits, even parity and 1 stop bit. XON/XOFF flow control is used when necessary.
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.
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-2S4 and RM-2S10 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