January 29, 2004
World Leader •In-Rack• Audio & Video Monitoring
WOHLER VMQ-SDI
SDI Audio Monitor with 4 Simultaneous Discrete Channels
The VMQ-SDI audio monitor from Wohler
Technologies offers voice quality confidence
monitoring of up to 4 SDI channels
simultaneously (all 4 channels from SDI group
one), as well as offering 4 balanced analog
outputs demuxed from the SDI input and a
reclocked SDI output. The VMQ-SDI only
requires a compact 1U of rackspace and is
available at a very cost effective price.
Because each channel has its own dedicated
power amplifier and speaker, the audio
sources remain completely separate from
input to output. When listening within “Ultra
Near Field” distances of 1 to 3 feet, these
discrete speaker outputs provide enhanced
source distinction when compared to designs
with four inputs mixed into a single output.
Features:
Monitoring of Four Discrete Audio Channels in One Unit
Only One Rack Space High
Powerful 94dB SPL at 2 feet (0.6m)
1 SDI Input (All 4 Channels of Group One)
1 Reclocked SDI Output
Converted Balanced Analog Output Demuxed from SDI Group One
Signal Present LED on each Channel Input
Mute Button and LED for each Channel
Thorough Magnetic Shielding for Placement next to Video Monitors
Headphone Jack, Mutes Speakers
Each channel has an LED which illuminates
when a signal is present at the input allowing
the operator to easily determine at a glance
which channels are currently active, very
helpful when quick volume adjustments are
required. Separate mute buttons are provided
for each channel; these together with an LED
that indicates channel muting allow an
operator to quickly mute one or more channels. A stereo headphone jack has channels 1
and 2 summed on the left side, and channels
3 and 4 on the right side.
The VMQ-SDI is completely magnetically
shielded to allow interference-free operation
immediately adjacent to all CRT video
monitors. The lighter weight and shallowerdepth chassis compared to similar-type units,
make it ideal for use in portable and mobile
vehicle applications.
Blowout-Proof Speakers
Lightweight and Shallow-Depth Chassis
Internal Universal AC Mains Power Supply
Quick and Simple Installation
Also Available, an Analog Version (VMQ-4) and an AES/EBU Version (VMQ-2D)
Au d io Monitoring
Level Metering
A larm Systems
Toll Free (US): 1.888.5.WOHLER • Tel: 510.870.0810 • Fax: 510.870.0811 • 31055 Huntwood Avenue, Hayward, California 94544, USA
Video Moni toring
www.wohler.com
sales@wohler.com
WOHLER VMQ-SDI
SDI Audio Monitor with 4 Simultaneous Discrete Channels
S P ecifications:
Rear Panel:
Input . . . . . . . . . . . . . . . . . . . . . . .
1 SDI input, BNC connector
Output . . . . . . . . . . . . . . . . . . . . .
1 reclocked SDIoutput, BNC connector.
4 balanced analog outputs from SDI Group 1,
phoenix connectors
SDI input termination . . . . . . . . . . .75 Ohms
Hum and noise . . . . . . . . . . . . . . . .better than -70 dB below full output
Acoustic frequency response . . . . . .300 Hz to 16 kHz (± 9dB)
Peak acoustic output @ 2 feet . . . . .94dB SPL
Electrical distortion . . . . . . . . . . . . .<0.2% at any level below limit threshold
Magnetic shielding . . . . . . . . . . . . .<1 gauss any adjacent surface
System Diagram:
SDI input connectors . . . . . . . . . . . .BNC
SDI output connectors . . . . . . . . . . .BNC
Analog output connectors . . . . . . . .phoenix
Dimensions (HxWxD) . . . . . . . . . . .1.75 x 19 x 9.5”
(44.5 x 483 x 241mm)
Weight . . . . . . . . . . . . . . . . . . . . .7 lbs. (3.2kg)
Power supply . . . . . . . . . . . . . . . . .100 to 240VAC, 50/60Hz universal input
CE and UL approved
Power consumption . . . . . . . . . . . . .20W / 35W (avg. / max)
All specifications are subject to improvement
Toll Free (US): 1.888.5.WOHLER • Tel: 510. 870.0810 • Fax: 510.870.0811
31055 Huntwood Avenue, Hayward, California 94544, USA
www.wohler.com • sales@wohler.com