Programmable Video and Audio Test Generator with
SDI/HD-SDI Output
FeaTur es
• Video outputs: RGBHV on BNC and 15-pin HD connectors, component video on
BNC connectors, S-video on a 4-pin mini DIN connector, composite video on a
BNC connector, and SDI/HD-SDI on a BNC connector
• Audio outputs: 3-pin XLR connector, RCA connector, and 3.5 mm mini stereo
audio jack
• 34 video test patterns — Includes multiple crosshatch patterns, color bars, PLUGE,
crop patterns, geometry, grayscale, and alternating pixel patterns, as well as flat field,
window, checkerboard, hum bar, and Patent Pending CTG Contrast Transfer Function
patterns with adjustable levels.
• Seven audio test signals — Includes sine waves, square waves, pink noise, white
noise, polarity, frequency sweeps, and sine wave bursts with selectable frequencies and
output levels.
• 101 selectable output rates including high resolution computer-video, HDTV, and NTSC/PAL video— Provides 101 factory scan rates for high resolution computer-video,
HDTV, 16:9, plasma, and RGB, as well as standard definition component video, S-video,
and composite video. Also accommodates up to 180 additional user-defined scan rates.
• Patent Pending Scope-Trigger™ expedites signal/system troubleshooting when
using an oscilloscope— An innovative feature which enables analysis of a specific
area within the test pattern image using an oscilloscope. This feature is especially
helpful in identifying signal and display imperfections.
• Four Quick Select memory presets — User settings including output scan rates and
test signal selections can be saved to and recalled from four memory presets via direct
access buttons.
• Broadcast quality video encoder — Ensures compliance with SMPTE and NTSC/PAL
standards for accurate video performance.
• Auto Sequence mode — Specific test patterns can be selected for a repeating
sequence with selectable time intervals.
• Selectable RGB color output — The red, green, or blue color channel can be enabled
or disabled via the set-up menu.
• Auto-memory recall — Settings are saved when the VTG 400D is turned off and
automatically recalled when subsequently powered.
• RS-232 serial control port for custom scan rate programming, firmware upgrades,
and control with Extron SIS™ Simple Instruction Set
• Screen Saver mode — An adjustable timer can be set to engage the VTG 400D in
Screen Saver mode, with either the video output muted or as a repeating sequence of
test patterns.
• Main panel security lockout — All main panel controls except the power button can be
locked out to prevent unauthorized use or tampering.
t e S t Ge n e r a t o r S & Me a S u r e M e nt p r o d u c t S
VTG 400D
• Rugged metal enclosure — Appropriate for field use, but can also be placed on a
desktop. For added protection and portability, a soft nylon carrying case is included.
• Internal international power supply — The 100-240VAC, 50/60 Hz, universal power
supply provides worldwide power compatibility.
descr IPTIo n
The Extron VTG 400D is an advanced, programmable, and upgradeable Video and Audio Test
Generator that delivers accurate, full bandwidth video signal reproduction and high performance
audio test signals. This test generator is a professional quality reference tool for set-up,
performance evaluation, calibration, and troubleshooting audio and video systems.
The VTG 400D offers a comprehensive array of video test patterns, as well as a suite of audio
reference signals. High resolution RGB computer-video is output simultaneously on BNC and
15-pin HD connectors. NTSC and PAL video is output simultaneously as RGB, component video,
S-video, and composite video, while audio output is both balanced on XLR and unbalanced on
RCA and 3.5 mm mini jack. An SDI/HD-SDI output is included with the VTG 400D.
The VTG 400D is designed for universal video display compatibility. A total of 101 output
scan rates are available for high resolution computer-video, as well as HDTV, NTSC, and PAL.
Up to 180 additional rates can be programmed into the VTG 400D. The audio test generator
is fully compatible with professional and consumer audio equipment, and delivers accurate
performance for microphone level inputs.
Operation of the VTG 400D is intuitive and convenient, with an easy-to-read LCD screen on
the main panel, direct access buttons, and memory presets for quick saving and recall of user
settings. Programming, upgrading, and adding new test patterns and custom scan rates to the
VTG 400D are available through RS-232 using the included Extron control software.
A powerful and innovative feature is the Patent Pending Scope-Trigger™ output, which enables
analysis of a selected area within the video image using an oscilloscope. Scope-Trigger delivers
quick and easy oscilloscope operation with minimal effort. Any desired location, or pixel, within
a video image can be accurately targeted and then simultaneously examined on an oscilloscope
via a precisely timed trigger signal from the VTG 400D.
Housed in a rugged, lightweight metal enclosure, the VTG 400D is ideal for both field and
permanent A/V applications.
Polarity test: -72 dBu to -14 dBu (-74 dBV to -16 dBV) (0.20 mV to 158 mVrms)
All other signal types: -72 dBu to +6 dBu (-74 dBV to +4 dBV) (0.20 mVrms
to 1.58 Vrms)
con Tro L / reM oTe
Serial control port . .. .. . .. .. . .. .. RS-232, 9-pin female D connector
Baud rate and protocol .. . .. .. . . 9600 baud, 8 data bits, 1 stop bit, no parity
VTG 400D — Test Patterns, Video Output Rates, and Audio Signals
t e S t Ge n e r a t o r S & Me a S u r e M e nt p r o d u c t S
VTG 4 00d T es T PaTTe rns
Circles— Using the circles as a guid e, this pattern is used to evalua te
and adjust the geometry of the displa y device. The c enter crosshatch aids
in proper centering.
Safe Area (5%/10%) — This pattern is used to indicate the safe area of
display and inner safe area for titling within NTSC and PAL a pplication s.
For graphics displays, this pattern serves as a guide for symmetrical
alignment of borders and tex t.
Focus Pattern— This pattern can be used to check display focus
and resolution.
16:9 Crop— When the border of this pattern is properly aligned at the
edges of a 4:3 screen, the two horizontal lines define proper centering
and shape of a superimposed 16:9 image.
4:3 Crop— When the border of this pattern is properly aligned at the
edges of a 16:9 screen, the two vertical lines define proper centering
and shape of a superimposed 4:3 image.
Rectangle/Square Crosshairs— This pattern can be used to
properly center the image an d set geometry. For CRT-based
projectors, this pattern is used to check and adjust gross li nearity
and static convergence.
4x4 Crosshatch— This pattern can be used to set up a scaler or video
processor for 2x or 4x zoom, or 1/4 or 1/16 downsizing. An applica tion
of this crosshatch is settin g up videowall displays.
Coarse Crosshatch— This crosshatch pattern can be used to set
projector focus and geometr y. For CRT projectors, this cr osshatch p attern
is for examining and adjusti ng both static and dynamic convergence.
Fine Crosshatch— This pattern has twice the number of horizontal
and vertical lines as the Co arse Crosshatch. It is useful for critical
convergence adjustments with CRT projectors and evaluating optical
qualities of projector lense s, such as chromatic aberration.
PLUGE— The vertical bars are used to set the black level (brightnes s),
while the horizontal bars ai d in setting the contrast level for the display.
VTG 4 00d T es T PaTTe rns
20% Window— A window at 20% (20 IRE) video level, surr ounded by
black, is used in fine tuning the color balance (or grayscale ) of a dis play
with the aid of a color anal yzer. The bias (or o ffset) setting is fine tuned
for each of the RGB color ad justments.
Window ( variable level) — The video level of the window can be adjusted
between 0% (0 IRE) and 100% (100 IRE) in 1% (1 IRE) steps. This pattern
is useful in fine tuning and evaluating grayscale performance of a display.
Flat Field (variable level) — This pattern is used to evaluate white
field uniformity. For RG B signals, each color channel can be select ively
enabled to assess color unif ormity. The video level is va riable bet ween
100% (100 IRE) and 0% (0 IRE ) in 1% (1 IRE) steps.
Flat Field with Targets (variable level) — This pattern is similar to Flat
Field, with targets added to support the ANSI measurement method for
determining display brightne ss.
Checkerboard (varia ble level) — This is the ANSI contrast ratio test
pattern, for measuring contrast ratio as well as adjusting an d assessin g
CRT displ ay perform ance. This reversible pattern is variable in level
between 100% (100 IRE) and 0 % (0 IRE) in 1% (1 IRE) steps.
Bounce (automatic) — The center window alternates between 90% and
10% average picture level at 0.5 second interva ls. This pattern is used
for checking high voltage re gulation on CRT displays, as well as black
level stability.
Bounce (manual) — This is similar to the automatic Bounce pattern,
but allows the user to manua lly toggle between 90% and 10% average
picture level.
Alterna ting Pixels— This one pixel “on,” one pixel “off” pattern is used
for assessing the performanc e of high resolution monitors and projectors,
EMI testing for worst case r adiation, and pixel clocking and pixel phas ing
adjustments on a digital dis play.
Frequency Sweep— These alternating “on” and “off” vertical bars
are used to evaluate the fre quency response of an NTSC or PAL
video system.
Graphics Multiburst— This pattern of grouped alternating bars at
the highest “on” and lowest “off” video levels is used to test display
resolution capability for co mputer-video and HDTV.
32-level Split Grayscale— With two opposing rows of 32 stepped bars
of gray between the lowest a nd highest levels, this pattern i s used for
setting and assessing graysc ale tracking, and evaluating cont rast linea rity
on display.
Extreme Grayscale— This pattern features shallow grayscale ramps
that allow for evaluation of display performance with subtle (very small)
grayscale level gradations.
Ramp— This pattern is used to evaluate the performance of a displa y or
video processor on the basis of its pixel bit depth capability. The pattern
should appear to be smooth, with no contouring or stepping.
Color Bars (8-color split) — This pattern is used for testing all of
the video color channels and setting video drive levels. It i s also use d
to check low frequency cross talk between the red, green, and blue
color channels.
SMPTE Color Bars (with PLUGE pattern) — For NTSC video equipment,
the SMPTE color bars are use d to set up tint and color, while the PLUGE
video pattern is for adjusti ng brightness and contrast.
EBU Color Bars (8-color full bars) — The EBU color bars are primarily
used to set up color for PAL video equipment.
80% Window— A window at 80% (80 IRE) video level, surr ounded by
black, is used in fine tuning the color balance (or grayscale ) of a dis play
with the aid of a color anal yzer. The gain (or d rive) setting is fine tuned
for each of the RGB color ad justments.
682
Multiburst— This pattern of grouped alternating bars at the highest “on”
and lowest “off” video levels with increas ing freque ncy is used to test
bandwidth performance for NT SC and PAL video.
Alterna ting Pixels (2-dimensional) — This offset, one pixel “on”, one
pixel “off ” pattern is used for fine-tunin g pixel cl ocking and pixel phasing
adjustments for high resolut ion digital displays.
Multipulse— This pattern is used to measure the frequency response
and group delay of the NTSC/ PAL transmission channel.
Transient Res ponse— The high and low levels bars against the
gray background are used for evaluation of transient response of the
video signal.
Contrast Transfer Function (CTF) — This pattern is for evaluation of
total video system response. The VTG 400 LCD display provides an
indication of contrast trans fer percentage when the user has matched
the brightness of the horizo ntal lines to that of the vertical lines.
H Pattern— This pattern is used to check or evaluate video clamping
stability, focus for pro jectors, and video pulse response , as well as
to simulate text. The user can to ggle betwe en white-on-black and
black-on-white.
Hum Bar Test (variable level) — This pattern is used to reveal the
presence of any hum bars whi ch indicate interference attributable to the
video signal or the equipmen t. The test pat tern level is adjustable from
1% to 100%.
VTG 400D — Test Patterns, Video Output Rates, and Audio Signals
t e S t Ge n e r a t o r S & Me a S u r e M e nt p r o d u c t S
coMPu Ter s ca n r aTes
Rat e NameRes olutionH ( kHz)V ( Hz)For mat
VGA640 x 48031.560RGB
VESA2 (VGA)640 x 48037.972RGB
VESA1 (SVGA)800 x 60035.256RGB
VESA5 (SVGA)800 x 60037.960RGB
VESA6 (SVGA)800 x 60048.172RGB
VESA3 (XGA)1024 x 76 848.460RGB
VESA4 (XGA)1024 x 76 856.470RGB
XGA51024 x 7685770RGB
VESA8 (XGA)1024 x 76 86075RGB
VESA9 (XGA)1024 x 76 868.785RGB
VESA10 (XGA+)1152 x 86467.575RGB
1280 x 9601280 x 9606060RGB
1280 x 9601280 x 9607070RGB
1280 x 9601280 x 9607575RGB
VESA11 (SXGA)1280 x 10246460RGB
VESA12 (SXGA)1280 x 102491.185RGB
SXGA+11400 x 105063.960RGB
SXGA+21400 x 105065.360RGB
VESA13 (UXGA)1600 x 12007560RGB
VESA14 (UXGA)1600 x 120087.570RGB
VESA15 (UXGA)1600 x 1200106.385RGB
QXGA2048 x 153611571.8RGB
LCoS11360 x 10248075.1RGB
LCoS21365 x 102465.260RGB
works TaTI on raT es
SGI640 x 48031.560RGB
SGI640 x 51232.2260RGB
SGI800 x 60037.860RGB
SGI960 x 68042.8460RGB
SGI960 x 62039.0660RGB
SGI1024 x 76848.3660RGB
SGI1024 x 76840.350RGB
SGI1200 x 90068.0472RGB
SGI1280 x 102453.2550RGB
SGI1280 x 102463.960RGB
SGI1280 x 102476.6872RGB
SGI1500 x 120075.660RGB
SGI1600 x 102463.3860RGB
SGI1600 x 12007560RGB
SGI1760 x 110071.0460RGB
SGI1920 x 103533.7560/30RGB
SGI1920 x 108033.7260/30RGB
SGI1920 x 108070.3160RGB
SGI1920 x 108084.3772RGB
SGI1920 x 120077.5260RGB
SGI1920 x 120085.2766RGB
SGI2048 x 112083.4572RGB
SUN1152 x 9006 1.866RGB
SUN1152 x 9007 1.776RGB
SUN1280 x 10248176RGB
SUN1600 x 128089.367RGB
SUN1920 x 108084.472RGB
SUN1920 x 120087.270RGB
SUN1920 x 120093.675RGB
Rat e NameRes olutionH ( kHz)V ( Hz)For mat
Stereographic VGA640 x 22231.5120RGB
SGI Stereo640 x 48060.84120RG B
SGI Stereo640 x 51265.28120RG B
SGI Stereo1024 x 76896.84120RGB
SGI Stereo1024 x 76877.4796RGB
SGI Stereo1120 x 84084.3896RGB
SGI Stereo1280 x 1024124.6114RGB
SGI Stereo1280 x 10241 31.16120RGB
SGI Stereo1280 x 49263.96120RGB
Cornerstone1600 x 180010576RGB
Extron1280 x 10249286.8RGB
Extron1600 x 12809570.9RGB
Extron1800 x 144010570RGB
16:9 HR848 x 48031.0260RGB
16:9 HR852 x 48031.860RGB
16:9 HR960 x 54033.7860RGB
16:9 HR1024 x 57644.0460RGB
16:9 HR1024 x 57652.8572RGB
16:9 HR1280 x 76845.115 6.25RGB
16:9 HR1280 x 76848.3660RGB
16:9 HR1360 x 76547.760RGB
16:9 HR1365 x 76847.760RGB
16:9 HR1366 x 76847.860RGB
16:9 HR1920 x 108067.260RGB
16:9 HR1920 x 120074.660RGB
480p7 20 x 48331.4759.94Y, R-Y, B-Y, RGB
576p7 20 x 57631.2550Y, R-Y, B-Y, RGB
720p1280 x 72044.9659.94Y, R-Y, B-Y, RGB, HDSDI*
720p1280 x 7204560Y, R-Y, B-Y, RGB, HDSDI*
720p1280 x 72037.550Y, R-Y, B-Y, RGB, HDSDI*
1080i1 920 x 108033.7229.97Y, R-Y, B-Y, RGB, HDSDI*
1080i1 920 x 108033.7530Y, R-Y, B-Y, RGB, HDSDI*
1080i1 920 x 108028.1325Y, R-Y, B-Y, RGB, HDSDI*
1080p1920 x 108067.560Y, R-Y, B-Y, RGB
1080p1920 x 108033.7530Y, R-Y, B-Y, RGB, HDSDI*
1080p1920 x 108033.7229.97Y, R-Y, B-Y, RGB, HDSDI*
1080p1920 x 108056.2550Y, R-Y, B-Y, RGB
1080p1920 x 108028.1325Y, R-Y, B-Y, RGB, HDSDI*
1080p1920 x 10802724Y, R-Y, B-Y, RGB, HDSDI*
1080p (sf)1920 x 10802724Y, R-Y, B-Y, RGB, HDSDI*
1080p (sf)1920 x 108026.9723.98Y, R-Y, B-Y, RGB, HDSD I*
1035i1 920 x 103533.7530Y, R-Y, B-Y, RGB, HDSDI*
1035i1 920 x 103533.7229.97Y, R-Y, B-Y, RGB, HDSDI*
NTSC720 x 48015.760/30VID, Y/C, Y, R-Y, B-Y, RGB, SDI*
NTSC 0 IRE (JPN)720 x 4801 5.760/30VID, Y/C, Y, R-Y, B-Y, RGB, SDI*
PAL - I720 x 57615.650/25VID, Y/C, Y, R-Y, B-Y, RGB, SDI*
PAL - B, G, H720 x 57615.650/25VID, Y/C, Y, R-Y, B-Y, RGB, SDI*
PAL - N720 x 57615.650/25VID, Y/C, Y, R-Y, B-Y, RGB, SDI*
* VTG 400D only
sTere oGraP hI cs raTes
suPer hIGh r es raTes
16:9 hIGh re s r aTes
hdTV raTes
VIdeo raTes
VTG 4 00d a ud Io Le VeLs
Pink Nois e-72 dBu to -4 dBu-74 dBV to -6 dBV.20 mV to 500 mV
Pola rity Test-72 dBu to -14 dBu-74 dBV to -16 dBV0.20 mV to 158 mV
All other signal types-72 dBu to +6 dBu-74 dBV to +4 dBV0.20 mV to 1 .6 V
VTG 4 00d a ud Io Te sT sI GnaLs
Whi te NoiseA randomly generated audio signal (noise) with equal energy at every fr equency. Used in audio level measurement and equipment c alibration .
Pin k NoiseA var iant of wh ite noise with equal energy at every octave. Used in testing and calibrating loudspeakers and sound sys tems.
Sin e WaveUsed in detecting distortion. The frequenc y can be s et from 20 Hz to 20 kHz (in 1/3 octave steps).
Squ are Wa veSquare wave signal with 50% duty cycle and no DC offset. The frequency can be set from 20 Hz to 5 kHz.
Swe pt Sine WaveVaries the frequency of a sine wave signal continuously from 20 Hz to 20 kHz. Used to detect driver defects and mechanical s ources of distortion.
Pol arity testPositive phased pulse with 1 sec. inter vals used to determine proper polarity i n wiring a udio electronics and loudspeakers.
Sin e Wave BurstA sine wave of a specified frequ ency that is gated on and off for fixed intervals. Used in tes ting the transient response of audio systems.
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