Wohler VAMP AC-3/M User manual

6-CHANNEL HD/SD-SDI DOLBY AUDIO/VIDEO MONITOR
VAMP AC-3/M
Order Part Number
VAMP AC-3M: 8003-00070
Description
The VAMP AC-3/M is a complete integrated 6 channel
Dolby Digital audio and composite video monitoring
system as well as professional level metering in a
compact two rack space cabinet. A 4.3" widescreen
color active matrix TFT LCD displays all formats of
HD-SDI video from two auto-sensing HD/SD-SDI
inputs with re-clocked output.
The VAMP AC-3/M features six 53 segment high-
resolution tri-color LED level meters showing
simultaneous VU and PPM for superior level-
metering. Output limiter circuits are incorporated to
protect the speakers, and extensive magnetic
shielding allows placement immediately adjacent to
video monitors with no color impurities.
The unique design provides optimally focused sound
for operators in an ultra near field (1 to 3 ft.) working
environment and offers performance comparable to
that of many separate monitor pairs, yet does so
without the installation hassles, awkward speaker
placements and “added-on” look. This provides for a
higher SPL for the operator while reducing overall
ambient sound and adjacent bay crosstalk. Extended
HF response reveals potential problems with audio
whine or hiss and electronic rather than acoustic
cancellation of bass frequencies provides positive
audible detection of out-of-phase (reversed polarity)
audio feeds.
Features
4.3” 16:9 format color LCD video screen
Six high-resolution 53-segment level meters showing
simultaneous VU and PPM
Premium quality drivers and power amplifiers
Output limiter protected speakers
Benefits
Hear and see up to 6 channels of audio
simultaneously
Powerful 100dB SPL at 2 feet (0.6m)
Focused Sound, Reduces Adjacent Bay Crosstalk
Includes an internal Dolby Digital AC-3 decoder

6-CHANNEL HD/SD-SDI DOLBY AUDIO/VIDEO MONITOR
VAMP AC-3/M
Benefits (Continued)
Balanced analog output of 2 selected channels or
multi-channel downmix
Thorough magnetic shielding
Rear Panel
Physical Specifications
Technical Specifications
Dimensions (H x W x D) 3.5” H x 19” W x 12” D (89 mm H x 483 mm W x 305 mm D)
Shipping weight 20 lbs (9.07 kg)
Space requirements 2RU in a standard 19” rack
Supplied accessories AC external power unit/cord
Power connector Attached external power unit plugs into standard U.S. outlet. Alternate power
cables are available.
Power requirements Power to the unit is 100 to 240 VAC ± 10%, 50/60Hz.
Power consumption 60 W
Inputs
1 balanced AES (XLR-F)
1 unbalanced AES (BNC)
2 HD/SD-SDI (BNC)
Outputs
1 balanced AES (XLR-M) loop-through
1 unbalanced AES (BNC) loop-through
2 HD/SD-SDI (BNC)
2 selected analog audio (XLR-M) (A and B)
Additional rear panel controls
1 RS-232
1 selection (2-position push-button switch)
2 options (A and B) (10-position rotary switches)
[phone]
[phone]
www.Wohler.com
Wohler
Technologies
Tel
Fax
(HD) SD-SDI
SOURCE 2
SEL
OPT
BALANCED 110
IN
SOURCE 1
AC-3
LOOP
SOURCE
UNBAL 75
TERM
2
LOOPIN 1
OPT B
OPT A
CH B (R)
SELECTED OUTPUT
IN 1
(ANALOG)
CH A (L)
IN 2 OUT
RS232
SERIAL NO. MONTH
YEAR
100-240 VAC
50/60 Hz 1.0 A
1 2
3
1
3
2
3
1 2

6-CHANNEL HD/SD-SDI DOLBY AUDIO/VIDEO MONITOR
VAMP AC-3/M
Magnetic shielding <0.8 Gauss any adjacent surface
Video formats NTSC/PAL auto-detecting
Signal input type 75 BNC (SMPTE 259M, SMPTE 292M auto-detect)
Screen type/size (diagonal) 4.3" (109.2 mm) Transmissive High-resolution LCD, active matrix TFT
Display image controls brightness and contrast
Aspect ratio HD-SDI = 16:9, SD-SDI = 4:3 or 16:9
Active area (H x V) 95.04 mm x 53.856 mm
Resolution (dots x lines) 1440 H x 272 V
Resolution (pixels x lines) 480 H x 272 V
Pixel format (H x V) 1 pixel = R+G+B dots
Pixel pitch (H x V) 0.198 mm X 0.198 mm
Pixel response time (typical) 30 ms rising; 30 ms falling
Color configuration RGB Vertical Stripes
Number of colors 1.6 million
Viewing angle top=80°, bottom=80°, left=80°, right=80°
Contrast ratio (typical) 400
White luminance (brightness) 165 (typical) NITs (cd/m^2)
Backlight type LED
LED backlight life 10,000 hours (average) to specified reduction
Level meters 53 bar graph
Level meter scale 0 to -66 dB
Dynamic range/mid-scale resolution 65 dB/1 dB
Bar graph length 2.22” (56.4 mm)
Indication accuracy
+10 to -30 dB
-31 to -39 dB
-40 to -50 dB
± 0.2 dB
± 0.3 dB
± 0.5 dB
Segment display colors Red, Green, Amber
Peak emission wave length green=570 nm; red=630nm
Segment brightness (20 mA) 3.5 cd/m2
Segment brightness uniformity <10% difference between segments
Adjacent segment “off” brightness <1% of brightness of active segment
Segment size 0.158” x 0.04” (4 mm x 1 mm)
Segment pitch 0.039” (.99 mm)
Technical Specifications (Continued)

6-CHANNEL HD/SD-SDI DOLBY AUDIO/VIDEO MONITOR
VAMP AC-3/M
Contact
Wohler Technologies, Inc. Wohler Europe Wohler Asia
31055 Huntwood Avenue [phone] Lucky Commercial Center
Hayward, CA 94544 USA [phone] (fax) 103 Des Voeux Road West
+1 888 5 WOHLER (Toll Free) [e-mail] Sheung Wan, Hong Kong
[phone] www.wohler.com [phone]
[phone] (fax) [phone] (fax)
Part Number 830033, Revision A
Block Diagram
Left
Display Driver
Right
Display Driver
6 Channel
Display Engine
Phase Indicator
Left Front
Right Front
Center
Low Frequency EFX
Left Surround
Right Surround
123 456
Stream
Detector
Pro-16 Select
Video Scaler
and LCD Driver
53-Segment
High-Resolution
Level Meters
AC-3 Decoder
& PCM Passthru
AES
Receiver
LEFT FRONT
RIGHT FRONT
CENTER
CENTER
L SURROUND
R SURROUND
1-2
3-4
5-6
6-Channel
D to A
Converter
and Mixer
Right
Left
Stereo Analog
Amplier
Volume Balance
Headphone
R
Analog Stereo
Output of
Selected Source
Pass-Through
PCM
Input
(Unbal.)
Input
(Bal.)
SDI Interface
Input 1
Input 2
Reclocked
HD/SD-SDI
Output
Input Select Group Select
SDI
to
AES
Conv.
Sub-Group
Select
Source 2
AC-3/AES
Source 1
HD/SD-SDI
Loop Out
Loop Out
SDI AC-3
1
Re-
Clock
2
Source
Select
Active Matrix TFT
LCD Screen