Reference Monitors User Handbook
19
REFERENCE MONIT
ORS RM-2S4 & RM-2S10
REFERENCE MONITORS RM-2S4 & RM-2S10
1
* Link this pin to pin 6 via a 10kohm resistor to enable remote volume balance, (this
must also be enabled in the Sci system screen).
** Please note both remote volume and balance are enabled by pin 15 so both must be
set to a voltage level.
Open-collector outputs are low (conducting) during alarm conditions. When an alarm
occurs they begin conducting and, with the exception of the AES/EBU lock output, remain
in that condition until the Alarm Reset input is asserted. Open-collector outputs are rated
at 50mA and 30V.
The Audio Overlevel alarm is triggered if either channel of the currently selected input
source e12dBu for longer than 5 seconds.
The Audio Underlevel alarm is triggered if either channel of the currently selected input
source remains below -20dBu for longer than 20 seconds.
The Sustained Phase Error alarm is triggered if the phase difference between the two
channels of the currently selected input source remains consistently above 90 degrees for
longer than 5 seconds.
The AES/EBU Lock output is a real-time (non-latching) status output which becomes active
if a valid AES/EBU signal is detected on the currently selected Source input. By default, the
open-collector output is low (conducting) when a valid AES signal is detected, but this
behaviour may be reversed using the serial remote control LCK: command.
The active-low control inputs all have internal pull-ups. Equipment driving these inputs
need sink only 1mA and block 5V.
The MUTE input mutes the loudspeakers, headphone output and line outputs while held
low. The front panel CUT L and CUT R buttons illuminate to indicate that MUTE is asserted.
Pin 15
Pin 14 Ground
Pin 6 24V
Pin 13 Balance Control
Voltage
Pin 5
D-type 15 pin female
to connect to male
rear-panel connector
Volume Control
Voltage
Reference Monitor
Volume & Balance Remote Control
1
8
15
9
Pin 5
Pin 13
Pin 14
Pin 15
Pin 6
5V
7805
Volume
potentiometer
Balance with
centre detent
potentiometer
10k
10k
10k
For this to operate, tick the “Enable Remote Volume” option in the SCi
Reference Monitor Control Software.