מוניטור בקרה/Reference Monitor

This version of the Reference Monitor is the RM-4C8 with the RM-E1B expansion card already fitted. So, it has all of the features of the RM-4C8 as standard together with Dolby Decoding.

The RM-E1B adds to the unit a 75ohm unbalanced AES/EBU input and output on BNC connectors with the output acting as a loop-through of the input. The BNC input can decode a Dolby E or Dolby Digital audio stream allowing you to monitor visually 8 or 5.1 audio channels respectively and to monitor audibly any 2 of those channels.

By pressing the left hand source select control, you can select the Dolby input. If a Dolby E or Dolby Digital input is detected, the Channels (CHANS) button flashes to indicate that decoding is possible. Pressing the CHANS button displays the Dolby Digital 5.1 or Dolby E 8 channel signal, using the 4 bar-graph meters.

Each meter is split into 2 sections allowing you to view L, R, C, LFE, Ls, Rs for Dolby Digital and an additional Lt, Rt for Dolby E.

Full Dolby Metadata is available using the SCi remote control software. For a more detailed description of Dolby Decoding operation please refer to the Reference Monitor handbook.

Technical Specification For RM-4C8-E1B
Inputs
Audio Inputs	8 analogue or AES/ EBU digital channels (autoselecting)
Max level (0dB input gain):	+18dBu (analogue)/0dBFS (digital)
CMRR:	>60dB typical
Input Impedance:	20kΩ (analogue) 110Ω (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 control with indicator LEDs

Dolby Decoding Audio Input
AES/EBU Input	75Ω transformer coupled unbalanced input
Sample Rates:	32 - 48 kHz
Audio Formats:	Linear PCM Dolby E (16, 20 and 24 bit) Dolby Digital (16 and 32 bit)

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:	<50Ω (analogue)/110Ω (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
Crosstalk 1kHz input: 10kHz input:	Analogue I/O, ref 0dBu <-90dB <-85dB

יחידת האזנה ובקרה למקורות שמע Reference Monitor

Sonifex

Technical Specification For RM-4C8-E1B

Inputs

Dolby Decoding Audio Input

Line Level Outputs