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VTG 300 TEST PATTERNS
VTG 300 COMPUTER OUTPUT RATES
Rate Name Resolution H (kHz) V (Hz)
Computer Scan Rates
VGA1 640 x 480 31.5 60
VGA2 640 x 480 37.5 75
SVGA1 800 x 600 37.9 60
SVGA2 800 x 600 46.9 75
XGA1 1024 x 768 48.4 60
XGA2 1024 x 768 56.4 70
XGA3 1024 x 768 60.0 75
SXGA1 1280 x 1024 64.0 60
SXGA2 1280 x 1024 91.1 85
SXGA+ 1400 x 1050 63.9 60
UXGA1 1600 x 1200 75.0 60
UXGA2 1600 x 1200 87.5 70
UXGA3 1600 x 1200 106.3 85
LCoS1 1360 x 1024 80.0 75
LCoS2 1365 x 1024 65.2 60
Video Rates - NTSC or PAL
NTSC 720 x 480 15.745 60
NTSC (0 IRE) 720 x 480 15.745 60
PAL-I 720 x 576 15.6 50
PAL-B,G,H 720 x 576 15.6 50
PAL-N 720 x 576 15.6 50
HDTV Scan Rates
480p 720 x 480 31.5 60
576p 720 x 576 31.5 50
720p 1280 x 720 45.0 60
1080i 1920 x 1080 33.75 60
1080i 1920 x 1080 28.12 50
1080p 1920 x 1080 67.5 60
1080p 1920 x 1080 56.2 50
1080p 1920 x 1080 27.0 48
16:9 High Resolution Scan Rates
16:9 HR 848 x 480 31.0 60
16:9 HR 852 x 480 31.8 60
16:9 HR 1280 x 768 45.1 56
16:9 HR 1280 x 768 48.0 60
16:9 HR 1360 x 765 47.7 60
16:9 HR 1366 x 768 47.8 60
VTG 300
VIDEO TEST GENERATOR
AUDI O
SIGNAL
TEST
PATTERNS
RANGE
OUTPUT RATE
RATE
MENU
NEXT
POWER
SELECT
LEVEL
FREQUENCY
VIDEO
P.NOISE
W. NOISE
SINE
SQUARE
POLARITY
SWEEP
CROSSHATCH
H. PATTERN
COLOR BARS
GRAYSCALE
ALT / MULTI
WHITE FIELD
PC
VIDEO
HDTV
16:9 HR
Extron
VTG 300
Video and Audio Test Generator
Front view
RGB/Y,R-Y,R-Y S-VIDEO COMPOSITE
Top view
RGB Signal
The Extron VTG 300 and VTG 300R are handheld, battery-operated
video and audio test generators featuring high resolution computer-
video, plasma, HDTV, and 16:9 rates, as well as standard definition
NTSC or PAL video rates for RGB, component video, S-video, and
composite video. The VTG 300R features a rechargeable battery with
an internal charger, while the VTG 300 operates on four AA batteries.
Both models can be powered when the included external power supply
is connected. When fully charged, the VTG 300R can operate
continuously for up to approximately 5 hours. Each product is
lightweight and compact for portable field use or bench testing. As
versatile, broadcast quality reference tools, these test generators can be
used for projector set-up, performance evaluation, alignment,
convergence, calibration, synchronization, troubleshooting, and
accurate video and audio signal quality reproduction in professional A/V
applications.
The VTG 300 and VTG 300R feature streamlined user interfaces with
easy-to-read, backlit LCD displays and rubber pushbuttons for direct
and simple access to video and audio functions. The 13 video test
patterns can be used with any of the 34 video scan rates. An integrated
audio tone generator includes six audio test signals on a balanced XLR
connector, as well as unbalanced on a female RCA connector and
3.5 mm dual-channel mono mini jack. When the test generator is
turned off, the most recent settings are stored and automatically
recalled when the unit is turned on again. The VTG 300 and VTG 300R
are housed in compact, rugged enclosures. Each comes with a
protective rubber boot to guard against severe environments and
prolong the lifespan of the test generator.
■ 34 scan rates – Provides scan rates to support high resolution
computer-video, HDTV, 16:9, plasma, RGB, as well as standard
definition component video, S-video, and composite video.
■ Broadcast quality video encoder – Ensures compliance with
SMPTE and NTSC/PAL standards for accurate video performance.
■ 13 video test patterns – Included are crosshatch (32x24, 32x18),
H pattern, SMPTE color bars, EBU color bars, 8-color split bars,
32-level split grayscale, ramp, alternating pixels, multiburst, 20%
window, 80% window, and flat field — all the essential patterns
for accurately testing, and calibrating a display.
■ Video output connectors – A 15-pin HD female connector is
provided for RGB and component video output signals, while
BNC female and 4-pin mini DIN female connectors are provided
for composite video and S-video signals, respectively.
■ Six audio test signals – Test signals for the VTG 300 and
VTG 300R include sine waves, square waves, pink noise, white
noise, polarity, and frequency sweep. Basic audio testing is helpful
for loudspeaker calibration, frequency settings, distortion, and
polarity verification in audio cabling.
■ Portability – Small, rugged, handheld enclosures, along with the
included protective rubber boots, make the VTG 300 and
VTG 300R excellent tools for technicians in the field.
■ Power options – The VTG 300R can be powered using the
integrated rechargeable battery, while the VTG 300 operates on
four AA batteries (not included). Both models can also be
powered using the included external international power supply
(part # 70-055-03).
■ Integrated charger (VTG 300R only) – When the power supply
is connected, the battery can be recharged while the VTG 300R is
in operation. Fully charged in 8 hours, the VTG 300R can provide
up to 5 hours of continuous operation.
APPLICATION DIAGRAMS
PANEL DRAWINGS
DESCRIPTION
FEATURES
RGB/Y,R-Y,R-Y S-VIDEO COMPOSITE
POWER
12 VDC 1.0A
A
U
D
I
O
VTG 300
VIDEO TEST GENERATOR
SIGNAL
TEST
PATTERNS
RANGE
OUTPUT RATE
RATE
MENU
NEXT
POWER
SELECT
LEVEL
FREQUENCY
P.NOISE
W. NOISE
SINE
SQUARE
POLARITY
SWEEP
X-HATCH
H PATTERN
COL. BARS
GRAYSCALE
ALT/ MULTI
WHT. FIELD
PC
VIDEO
HDTV
16:9 HR
AUDIO VIDEO
VTG 300 AUDIO FREQUENCIES (SINE WAVES, SQUARE WAVES, POLARITY TEST)
20 Hz 25 Hz 31.5 Hz 40 Hz
50 Hz 63 Hz 80 Hz 100 Hz
125 Hz 160 Hz 200 Hz 250 Hz
315 Hz 400 Hz 500 Hz 630 Hz
800 Hz 1 kHz 1.2 kHz 1.6 kHz
2 kHz 2.5 kHz 3.15 kHz 4 kHz
5 kHz 6.3 kHz 8 kHz 10 kHz
12.5 kHz 16 kHz 20 kHz
VTG 300 AUDIO LEVELS
Signal Format Range (dBu) Range (dBV) Range (mV)
Pink Noise -56 dBu to -8 dBu -58 dBV to -10 dBV 1.25 mV to 316 mV
Polarity Test -72 dBu to -18 dBu -74 dBV to -20 dBV 0.20 mV to 100 mV
All other signal types -72 dBu to +6 dBu -74 dBV to +4 dBV 0.20 mV to 1.6 V
TEST PATTERNS, VIDEO OUTPUT RATES, AND AUDIO SIGNALS
VTG 300 AUDIO SIGNAL FORMATS
Pink Noise Random noise that has constant energy per octave. Used in loudspeaker testing and calibration.
White Noise Random noise that has an equal energy distribution across all frequencies between 20 Hz and 20 kHz.
Sine Wave Used in detecting distortion. The frequency can be set from 20 Hz to 20 kHz (in 1/3 octave steps).
Square Wave Square wave signal with 50% duty cycle and no DC offset. The frequency can be set from 20 Hz to 5 kHz.
Swept Sine Wave Varies the frequency of a sine wave signal continuously from 20 Hz to 20 kHz. Used to detect driver defects and mechanical sources of distortion.
Polarity test Proprietary waveform used in verifying the polarity of audio cabling.
Bottom view
Extron
MLS 406MA
MediaLink
Switcher
Extron
VTG 300
Video & Audio
Test Generator
A
U
D
I
O
AMPLIFIED OUTPUT
20 WATTS MONO
DIRECT
XFMR
RS-232
MLC/IR
COM
COM
100V
70V
4
8
CONTROL
INPUT 4
AUDIO INPUTS
LINE LEVEL
MONO
AUDIO
AUDIO
Tx
Rx IR
12V
A
B
C
PREAMP
AUX/MIX
ADJUST
-42dB
TO
+24dB
L
R
L
R
L
R
1
2
3
INPUTS
OUTPUTS
VIDEO
H
V
B
G
R
Y
1
2
3
INPUTS
MONITOR OUT
4
5
6
C
100-240V
1.0A MAX.
50-60Hz
70V Mono Distribution
Mono Audio
Signal
32 x 24 Crosshatch
This crosshatch pattern can be used to set projector focus and geometry. For CRT projectors,
this pattern is for examining and adjusting both static and dynamic convergence, so that the
red, green, and blue video signals are aligned throughout the image.
32 x 18 Crosshatch
This crosshatch pattern is for use with 16:9 displays.
SMPTE Color Bars (with PLUGE pattern)
For NTSC video equipment, the SMPTE color bars are used to set up tint and color, while the
PLUGE video pattern is for adjusting brightness and contrast.
EBU Color Bars
The EBU color bars are primarily used to set up color for PAL video equipment.
Color Bars (8-color split)
This pattern is used for testing all of the video color channels and setting video drive levels. It
is also used to check low frequency crosstalk between the red, green, and blue color channels.
H Pattern
This pattern is used to check or evaluate video clamping stability, focus for projectors, and
video pulse response, as well as to simulate text. The user can toggle between white-on-black
and black-on-white.
32-level Split Grayscale
With two opposing rows of 32 stepped bars of gray between the lowest and highest levels,
this pattern is used for setting and assessing grayscale tracking, and evaluating contrast
linearity on displays.
Alternating Pixels
This one pixel “on,” one pixel “off” pattern is used for assessing the performance of high
resolution monitors and projectors, EMI testing for worst case radiation, and pixel clocking
and pixel phasing adjustments on a digital display.
Multiburst
This pattern, consisting of sine wave bursts of increasing frequency, tests bandwidth
performance for NTSC and PAL video.
Flat Field
This pattern is used to evaluate white field uniformity.
80% Window
A window at 80% (80 IRE) video level, surrounded by black, is used in fine tuning the
color balance (or grayscale) of a display with the aid of a color analyzer. The gain (or
drive) setting is fine tuned for each of the red, green, and/or blue color adjustments.
20% Window
A window at 20% (20 IRE) video level, surrounded by black, is used in fine tuning the color
balance (or grayscale) of a display with the aid of a color analyzer. The bias (or offset) setting
is fine tuned for each of the red, green, and/or blue color adjustments.
Ramp
This is used to evaluate the performance of a display or video processor on the basis of its pixel
bit depth capability. The pattern should appear to be smooth, with no contouring or
stepping.