BM-A2-E16SHD - Aspen Media
professional broadcast solutions
audio/video monitors
broadcast delays
utility equipment
BM-A2-E16SHD
In-Rack Monitoring
FEATURES
High-quality 16 channel audio monitor with
16 high resolution bargraph meters and
intuitive control
Auto-selection of 3G/HD/SD input source
via two SDI inputs with loop-through
Comprehensive I/O facilities, including 2
x SDI, 8 x AES-3id pairs (accepts SPDIF
inputs), 10 x analogue
Dolby® E, Dolby® Digital and Digital Plus
decoding
Loudness measurement to
ITU-R BS.1770-2 / EBU R128
INTRODUCTION
The Bel BM-A2-E16SHD is a no-compromise, 2U, 16-channel
audio monitor suitable for operation in broadcast control rooms
or OB vehicles where SDI is the standard video format. It is able
to de-embed 16 channels of audio from 3G/HD/SD SDI, display
the levels on individual front panel meters, and to provide stereo
audio monitoring of any combination of all 16 channels.
The unit is very simple to use: all source selection and main
monitoring setup is done from individual controls on the front
panel without any necessity for menu navigation.
In addition to two auto-detecting 3G/HD/SD SDI inputs, the
monitor has eight balanced analogue inputs (D-sub) and eight
AES3id pairs (also accepting SPDIF). Analogue inputs 1 and 2 are
duplicated on a pair of XLRs. A re-clocked loop-through output
is available for the selected SDI source providing a convenient
and cost-effective method of switching SDI feeds to an external
monitor. The 16 channels (of the selected source) are also
routed to eight AES3id outputs and Channels 1 to 8 to balanced
analogue outputs (D-sub). In addition, the stereo audio monitor
mix is available as a separate balanced feed at a pair of XLRs.
16 channel monitoring with ability to
monitor any channel on either speaker,
including combinations and groups
Audio levels are metered on sixteen 53-segment, high-resolution,
tricolour LED bargraphs. User setup options allow a choice of
four scales and ballistics (including BBC or DIN PPM, VU and
AES/EBU), and also colour transition points and peak hold.
High resolution, tricolour level meters
with adjustable colour transition points &
peak-hold facility. Four standard scales &
ballistics, user assignable.
The unit will decode Dolby® E, Dolby® Digital or Dolby® Digital
Plus bitstreams into their discrete channels. Dolby data may
be present on any pair of the incoming SDI audio channels,
or connected at any of the AES3id inputs. Metadata may be
displayed on the LCD screen.
Auto-scaling facilities are available on the
audio outputs when selecting multiple
sources.
The BM-A2-E16SHD also performs loudness measurement,
compliant with ITU-R BS1770-2/EBU R128, on the signals
selected for monitoring. Momentary loudness value is displayed
on the LCD screen in numeric form, accompanied by 3 or 10
second average values, the integrated (long-term) value or
Loudness Range (LRA).
Fully RoHS compliant and 3 year warranty.
[email protected]
http://www.beldigital.com
BM-A2-E16SHD Specifications
Audio Inputs
Digital AES3-id
8 x 75 ohm (BNC connector) (Also accepts SPDIF)
Sample Rate
48 kHz
Analogue
8 x differential impedance 25k ohm. 25 way ‘D’ type connector; 2 x XLR3F
Video
Input
2 x 3G/HD/SD SMPTE 424M, 259M, 296M, 274M, 292M
Output
1 x SDI loopthrough
Meters
Bargraphs
16 x 53 element tricolour with adjustable colour break points
Analogue Monitor Outputs
2 x XLR3M
Max output level
+15 dB
Noise + THD
-98 dB
Analogue Channel Outputs x 8
1 x 25 way ‘D’ type connector
Max output level
+10 dB
Noise + THD
-108 dB w.r.t. clipping
Digital Channel Outputs x 16
8 x 75 ohm BNC
Digital AES-3id
Frequency response
All analogue outputs
20 Hz to 20 kHz ±1 dB
Main drive amp
Noise + THD
-80 dB w.r.t. maximum output
Speaker driver units
Peak acoustic level (@2ft)
100 dB SPL
Shielding
Magnetic
Scales and Ballistics
DIN PPM
Overall dynamic range: 55 dB (+5 to -50 dB)
Attack time: 10 ms Fallback: 1.5 sec per 20 dB decay
BBC PPM
Overall dynamic range: (+12 to -12 dB from mark 7 to mark 1)
Attack time: 10 ms Fallback: 2.85 sec (from mark 7 to mark 1)
VU
Overall dynamic range 23 dB (+3 dB to -20 dB)
Attack time: 300 Fallback: 300 ms
AES/EBU
Overall dynamic range 60 dB (0 to -60 dB)
Attack time: 1 ms
Fallback: 1.5 sec per 20 dB decay
Housing
19” Rack Mount: 2U high.
Outline Dimensions: 483 mm(W) x 256 mm(D) x 89 mm(H)
Outline Dimensions: 19 inch(W) x 10 inch(D) x 3.5 inch(H)
Power
90 - 264 VAC 50/60 Hz Autoselect, Fuse 4A HAC
Environment
Temperature 0 °C to 30 °C. Humidity 70% max (non-condensing)
Weight
6 kg (14lbs)
Product specifications subject to change without prior notice. See website for warranty details.
Bel (Digital) Audio Ltd. 3 Horwood Court, Bletchley, Milton Keynes, MK1 1RD. United Kingdom
Tel: +44 (0)1908 641 063 Fax: +44 (0)1908 645 985
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