Sencore VideoPro VP400 Series User manual

VP400 Series Video Pro Form7343A Operation Manual
VP400 Series
VideoPro
Multimedia Video Generators
VP400, VP401, VP402, VP403, VP403C,
VP400SH, VP401SH, VP403SH, VP403CSH
Operation Manual
3200 Sencore Drive, Sioux Falls, SD 57107

VP400 Series Video Pro Form7343A Operation Manual
3
Table of Contents
Warning.............................................................................................inside front cover
Introduction ............................................................................................................... 4
Specifications............................................................................................................ 5
Battery Information and Installation ........................................................................ 6
Making Connections VP400/401 .............................................................................. 7
Making Connections VP402/403 .............................................................................. 8
Test Lead Accessories ............................................................................................. 9
Front Panel Controls and Indicators ..................................................................... 10
Signal Type Menu ................................................................................................. 11
Signal Format Menu.............................................................................................. 11
Pattern Menus....................................................................................................... 12
Window Pattern Sub Menu ................................................................................. 12
Gating Menu .........................................................................................................13
Tests Menu ...........................................................................................................14
Sequence Sub-Menu .......................................................................................... 14
Burn-In Sub-Menu .............................................................................................. 15
Audio Sub-Menu ................................................................................................. 15
HDCP Sub-Menu ................................................................................................ 15
Options Menu........................................................................................................ 16
Learn Formats Menu............................................................................................. 17
DDC Step Sub-Menu .......................................................................................... 17
Pattern Description and Usage .............................................................................. 18
Applications............................................................................................................. 31
Display Inputs .......................................................................................................31
Testing Display Inputs with the VideoPro.............................................................. 32
NTSC RF to Antenna Input ................................................................................. 32
ATSC HDTV RF to Antenna Input ...................................................................... 33
Composite Video NTSC to Video Input............................................................... 34
S-Video NTSC to S-Video Input.......................................................................... 35
Component YPbPr to Component HDTV Input................................................... 36
RGB to RGB HDTV Input.................................................................................... 37
RGB to VGA/SVGA Input.................................................................................... 38
DVI to DVI Input.................................................................................................. 39
DVI to HDMI Input............................................................................................... 40
Display Data Channel (DDC) .................................................................................. 41
Appendix A VideoPro Pixel Resolution................................................................. 43
Appendix B Calibrating TV User Controls ............................................................ 44
Appendix C Video Display White Balance Adjustment........................................ 49
Appendix D Playing VP403C Video Clips & Picture Images on ATSC Display .. 51
Appendix E Applying SDI/HDSDI Signals (VideoPro SH option)........................... 57
Warranty and Service Information ................................................. inside back cover
Entire Contents Copyright ©2006
Sencore, Inc. All rights reserved

VP400 Series Video Pro Form7343A Operation Manual
4
Introduction
This manual documents the operational features and applications of the VideoPro
400 series generators from Sencore. The VideoPro 400 series includes models
VP400, VP401, VP402, and VP403, VP403C and “SH” suffix models. These
models offer various signal options to satisfy your testing requirements. The chart
below summarizes the signal type differences among the models. The VP403
includes all signal output options including NTSC RF, DVI, and ATSC RF. The
VP402, VP401, and VP400 do not include various outputs, as indicated by a “NO”
in the chart.
VideoPro Multimedia Video Generators
Sencore
Model # s
Composite
NTSC/PAL
S-Video
NTSC/PAL
Y Pb Pr
Component
HDTV/SDTV
R G B H V
Analog
VESA Mac
NTSC – RF,
Ch. 2, 3, 5, 6
D.V.I.
VESA/Mac
/HDTV
ATSC – RF
8 VSB,
Ch. 2-4,
7-10, 30-32
VP400 YES YES YES YES NO NO NO
VP401 YES YES YES YES NO YES NO
VP402 YES YES YES YES YES NO YES
VP403 YES YES YES YES YES YES YES
“SH” suffix models add SDI/HDSDI output signals to the generator.

VP400 Series Video Pro Form7343A Operation Manual
5
Specifications
Video Formats
Storage: 100 total
VESA/Mac 38 standard formats from
640x350 to 1920x1024
NTSC NTSC
PAL PAL, PAL-Y
SDTV 420i29, 480i30, 480i59, 480i60
480p59, 480p60
HDTV 720p59, 720p60, 960p59,
1080i25, 1080i29, 1080i30, 1080p50,
1080p59, 1080p60, 1080s23,
1365x1024
Video Outputs (VP400, 401, 402, 403)
DTV: SDTV: YPbPr, RGB, DVI
HDTV: YPbPr, RGB, DVI
NTSC: Composite, S-Video, RGB
PAL: Composite, S-Video, RGB
Computer: VGA/Mac: RGB, DVI
Horizontal Timing
Frequency: 1.5 kHz – 250 kHz
Total pixels: 32 to 4095
Active range: 16 to 4094 pixels
Vertical Timing
Frequency: 1 Hz – 1 kHz
Active lines: 1 – 4095
Scan Types: Progressive, Interlace
Sync Types
Separate Digital Horizontal and Vertical
Digital and Analog Composite
Tri-level HDTV
Bi-level
NTSC RF channel Output (402, 403)
Channels: CH2, CH3, CH4, CH6
Carrier Level: 10 dBmV +/- 3 dBmV
Carrier Accuracy: +/- 50 kHz
ATSC RF Channel Output (VP402, 403)
Channels: CHs 2-4, 7-10, 30-32
MER: >30 dB
Audio output
Channels: Two channels
Frequency: 1 kHz (left), 2 kHz (right)
Connector: 3.5mm phone jack stereo
SDI (‘SH’ only): SMPTE 292M, 10 bit 1.485 Gb/s
525i ([email protected]) ITU-R/BT.601-4
625i (720x576@50i) ITU-R/BT.601-4
HDSDI (‘SH’ only): SMPTE 259M, 10 bit 270 Mb/s
Formats: 720p @60, 59.94, 50 Hz
1080i, 1080p @30, 29.97, 25, 24, 23.98 Hz
Patterns: SMPTE Bar, Staircase, H_Stair, Pluge,
Needle, HiLoTrk, Overscan, Sharpness
Window1, Window2, Raster, DecodAdj
DecodChk, ColorBar, Croshhatch,
Converge, Linearity, Anamorphic, Ramp
Regulate, Checker, Multiburst, Focus
Still Picture Images VP403C: Hiking Couple,
Girl
Video Clips 403C: Hot Air Balloons (720p),
Hawaii Scenes (1080i)
Gray levels/Colors Displayed: 16/16
Test (Sequence)
Storage: 100 steps
Edit method: PC
Parameters: Load Format & Pattern
Auto time: 0.1 sec. to 24 hours
Name: 8 characters
User Interface
Display: 20x4 char. LCD/backlight
Pushbuttons: 9 function, 8 menu select
Computer Port
Type: RS-232C
Baud Rate: 9600
Handshake: none, Xon/Xoff
Connector: 9 pin D-Sub receptacle
Download: Copy Formats and
Firmware updates via PC
DDC (Display Data Channel)
Read EDID data & display supported formats
Version supported: DDC-2B (read only)
Power
Battery: (6) AA Batteries NiMh
Use time: 8 hours with NiMh
AC: 12V Charger/Adapter PS
Re-charge 400/401: ~8 hr, 402/403:~4 hr
Frequency: 48 to 66 Hz
Voltage: 86 – 250 VAC (auto)
Weight & Size
VP400, VP401: 1.5 lbs.
VP402, VP403: 2.0 lbs
VP400, VP401: 6 x 8.25 x 2 in.
VP402, VP403: 6 x 8.25x 3.5 in

VP400 Series Video Pro Form7343A Operation Manual
6
Battery Information & Installation
Battery Types Used
The VideoPro generator is supplied with six
(6) AA rechargeable Nickel Metal Hydride
(NiMH) cells. These 1800 mA/H rated cells
will operate the VP400/401 generator about 8
hours and the VP402/403 generator about 4
hours on a full charge. The batteries can
normally be recharged 1000 times before
needing replacement.
No other type of rechargeable battery can be
used in the Sencore 400 series generators.
You can use non-rechargeable alkaline AA
cells with the generator, provided that you
NEVER use the external power supply with
the generator while the alkaline cells are in
the generator. Attempting to operate the
generator or recharge alkaline cells may result
in operator injury or generator damage. For
this reason, use of alkaline cells is not
recommended. Never mix battery types in the
generator.
AC Power Supply
The AC power supply that comes with the
generator has an input voltage range of 100-
240 VAC from 47 to 63 Hz. The output is
rated at 12.0 VDC @ 1 Amp. This is
sufficient to operate the generator and
recharge the batteries at the same time.
Attempting to operate the generator or
recharge the batteries with any other type of
external power supply may cause operator
injury and/or damage to the generator!
Furthermore, do not use or modify the
generator for use with vehicle 12VDC power.
These voltage sources are unregulated and
can approach voltages of nearly 14V, causing
circuit stress and possible premature circuit
failure.
Battery Installation
1) Place the generator face down on a suitable padded surface.
2) Remove the two back cover screws shown in the top figure.
3) Lift the back cover off the generator and locate the six battery
holders. (The VP402/VP403 require additional disassembly.)
4) Install the batteries, making sure to match up their polarities
for each battery holder. The supplied batteries may not have
any printed polarity indication. The outer metal
can is the negative terminal. The insulated metal
button, as shown in the end view in the lower
figure, is the positive terminal.
5) Replace the back cover and retaining screws.
6) When the generator is shipped from the factory,
the supplied batteries may not be fully charged.
Connect the supplied AC power supply and
charge the batteries for at least 8 hours.
Low Battery Indication
A “BATTERY LOW’ message blinks on the LCD when the NiMH
batteries need recharging or alkaline cells need replacement.

VP400 Series Video Pro Form7343A Operation Manual
7
Making Connections VP400/401

VP400 Series Video Pro Form7343A Operation Manual
8
Making Connections VP402/403

VP400 Series Video Pro Form7343A Operation Manual
9
Test Lead Accessories
1. DVI-I male to DVI-I male single link 6 ft.
cable (39G1060) – Connects the DVI output of
the generator to the DVI input of a display.
(Supplied with VP401 and 403)
2. DVI-I male to 5 BNC 6 ft. cable (39G1059) -
Adapts the generator’s DVI analog outputs to
the RGBVH or component inputs of a display.
3. BNC to RCA phono plug adapter (26G1255) –
Adapts a BNC connector to an RCA male
phono plug. Use to adapt the BNC connectors
to male phono connectors required by most Y,
Pb, Pr inputs. (5 Supplied)
4. Coaxial BNC to BNC 6 ft. cable (39G232) –
Connects the NTSC/PAL output jack of
generator to the video inputs of a display.
5. DVI-A to VGA HD-15 F Adapter (39G1061) -
Adapts the analog DVI outputs of the generator
to a standard VGA HD-15 plug configuration.
6. SVHS 4 pin mini-din connector cable
(39G270) – Connects the S Video output jack
of the generator to the Y/C or S Video input of
a display.
7. Coaxial 6ft. cable “F” to Quick F connectors
(39G189): - Connects the RF output jack of the
VP403 to the antenna or cable input of a
display. (Supplied with VP402, VP403)
8. (Optional - all models) VGA HD-15M to
VGA HD-15M 6 ft. cable (39G798) – Used to
connect the output of the DVI to VGA adapter
(39G1061) to the VGA HD-15 input of a
display.
9. (Optional - all models) Connects a DVI output
to an HDMI input (DH1000 cable).

VP400 Series Video Pro Form7343A Operation Manual
10
Front Panel Controls & Indicators
LCD Window
The LCD window displays either a selection
menu or a user message. Most often a
selection menu is displayed. The selection
menu may show from 1- 8 items. The figure
shows a selection
menu with 8 items.
Often only 1-4 items
are shown, allowing
more definition to
the displayed selec-
tions. Pressing the
pushbutton beside
the listed item
selects and activates
that item. Pressing
the + or –
pushbuttons scrolls
up or down to
additional menu screens containing more
selection items. The + or – pushbuttons are
used to select additional menu screens when
more than 4 or 8 items may be selected.
Controls
1. CHARGE Light – Lights when external
power adapter/charger is connected.
2. ON/OFF pushbutton – Push and hold down
for approximately 1 second to turn generator
on or off.
3. SIGNAL TYPE pushbutton – Selects a
menu(s) listing the various signal types that
can be produced by the generator. See Signal
Types section of this manual.
4. FORMAT pushbutton – Selects a menu(s)
listing the various formats within each signal
type that can be produced by the generator.
See Format section of this manual.
5. PATTERN pushbutton – Selects a menu(s)
listing the various video test patterns
produced by the generator. See the Pattern
Description and Usage section of this manual.
6. +/ - pushbuttons – Move up or down through
menu displays to show multiple selection
items.
7. LEARN FORMATS pushbutton – Selects a
menu that provides DDC testing. Captures
display DDC data using the EDID data.
8. OPTIONS pushbutton – Selects a menu
listing generator control options.
9. TESTS pushbutton – Selects a menu listing
the various special tests that can be
performed by the generator. See
the Tests Menu section.
10. GATING pushbutton – Selects a
menu listing the various gating
selections for video and sync. See
the Gating section of this manual.
11. BACKLIGHT pushbutton – Turns
LCD backlight on or off. With
Power Save “ON” in the Options
menu, the LCD light times off in
approximately 30 seconds.

VP400 Series Video Pro Form7343A Operation Manual
11
Signal Type Menu
A Signal Type menu(s) is displayed by pressing the
Signal Type pushbutton. This menu lists the different
output video signal types that may be produced by
the generator. Pressing the + or – pushbuttons show
additional signal type selections. An asterisk
indicates the selected or active signal type. Pressing
the pushbutton beside the signal types listed in the
display selects that signal type for output by the
generator.
HDTV/SDTV – YPbPr: Analog luminance
(Y) and color difference signals (Pb,Pr) per
EIA standards commonly referred to as
component video.
HDTV/SDTV – RGB: Analog red, green and
blue video signals per EIA standards.
VESA/Mac – RGB: Analog red, green and
blue video signals per VESA and Apple/Mac
standards.
NTSC/PAL: Analog composite color base-
band video signal via BNC connector or
separate analog luminance (Y) and
chrominance (C) video signal via S-video
connector or RGB component video via
analog pins of DVI connector per NTSC or
PAL standards. NTSC RF video signals via
RF connector on channel 2, 3, 4, or 6.
HDTV/SDTV – RF – 8VSB: TV Digital
video with RF carrier modulated with 8 level
vestigial side-band modulation, per ATSC
standards, on channels 2-4, 7-10, and 30-32.
HDTV/SDTV – DVI: Single link digital
video interface of red, green, blue
HDTV/SDTV video signals via differential
data and clock lines with a standard DVI
connector.
VESA/Mac – DVI: Single link digital video
interface of red, green, blue video signals per
VESA and Apple/Mac standards via
differential data and clock lines with a
standard DVI connector.
SDI/HDSDI – Serial digital video interface of
multiplexed Y, Cr, Cb video signals.
User: User defined video formats.
Format Menu
A Format menu(s) is displayed by pressing
the FORMAT pushbutton. This menu is
also automatically displayed when a new
Signal Type is selected in the Signal Type
menu. This prompts you to select the
desired format to fully define the
generator’s output signal.
The Format menu(s) lists the different
signal formats that can be produced for the
selected Signal Type. Pressing the + or –
pushbuttons shows additional format
selections. An asterisk indicates the selected
or active format. Pressing the pushbutton
beside the format listed in the display,
selects the format for output by the
generator.

VP400 Series Video Pro Form7343A Operation Manual
12
Appendix A lists the various signal formats
provided by the Sencore 400 series
generators. The generator may store up to 100
formats in non-volatile memory. Unused
locations may be shown as “empty” on the
format menu.
Pattern Menu
A video pattern menu(s) is displayed by pressing the Pattern pushbutton. This menu lists the
different video test patterns that may be selected and produced by the generator. Pressing the +
or – pushbuttons displays additional pattern selections. An asterisk indicates the selected, or
active, pattern. Pressing the pushbutton beside a pattern listed in the display selects that pattern
for output by the generator. See the Pattern Description and Usage section of this manual for
information on each video pattern.
Note: While there are 23 internally generated video test patterns, not all are available on each
signal type and format selection. The Pattern menus list the available video patterns for the
signal type and format selected.
Window Pattern IRE Adjust Menu
The Pattern menu screen that lists the Window 1, Window 2 and Raster patterns includes a
special test option listed as “IRE adjust” in the bottom line of the display menu. When in an IRE
Adjust mode, the IRE level of the white portion of the Window 1, Window 2 or Raster video
patterns can be changed from 0 to 100 IRE in 1 or 5 IRE steps. To start the IRE adjust mode,
press the pushbutton beside the IRE Adjust selection in the display. Press the pushbutton to the
bottom right of the display to select either 1 or 5 IRE steps. Press the + or – Scroll pushbutton to
increment the IRE level of the selected pattern
Note: IRE adjustment
is available only for
this menu screen for
the Window 1,
Window 2 and Raster
patterns. The window
patterns in the HDTV/
SDTV - RF - 8VSB
signal type are fixed
in IRE level and do
not include IRE
adjustment.

VP400 Series Video Pro Form7343A Operation Manual
13
Gating Menu
A Gating menu is displayed by pressing the Gating pushbutton. This menu lists options to
modify the output video or sync signals. The gating options shown in this menu vary depending
on the selected signal type and format. The middle of the Gating menu indicates the signal type
and video pattern currently selected.
ACS, DCS, DSS Gating: The right side of
the gating menu provides three choices of
sync types. The native sync type for the
selected format is marked with an asterisk.
The sync types are abbreviated as ACS
(Analog Composite Sync), DCS (Digital
Separate Sync, and DSS (Digital Separate
Sync). Here is a brief description of each
sync type.
ACS (Analog Composite Sync):
Vertical and horizontal sync pulses
are included with the Y (luminance),
G (Green), or Composite Video
signals. Levels are analog, causing an
approximate 0.3V sync signal swing.
DCS (Digital Composite Sync): TTL-
level vertical and horizontal sync
pulses are separate from the video, but
are combined on a single wire
connection as a composite signal.
DCS is used in analog RGB color
video signal types.
DSS (Digital Separate Sync): TTL-
level vertical and horizontal sync
pulses are separate and contained on
separate connector pins and wires
between the generator and display.
Red, Green, Blue Gating: The left side of
the gating menu provides on/off control of the
individual R, G, B video outputs. For
example, pressing the pushbutton beside the
RED display indicator turns on or off the red
color. An asterisk indicates the color output is
active. Color gating is not available in the
YPbPr or ATSC RF signal types. When the
color cannot be gated on or off, pressing the
pushbuttons beside the RED, GRN and BLU
display indicators will not turn off the output
and the asterisk stays on.
Sync Polarity Gating: A Sync Polarity
selection in the bottom left of the display
switches the sync polarity from positive (+) to
negative (-). This selection is available in the
analog RGB signal type.
Trilevel, Bilevel Sync Gating: A sync type
selection is available in the HDTV/SDTV
YPbPr signal types. The sync type may be
bilevel or trilevel.
Bilevel Sync: Two-level sync pulse
combined on the luminance or Y
signal.
Trilevel Sync: Three-level sync pulse
combined on the luminance or Y
signal.
Black Setup On/Off Gating: A black setup
level may be added or deleted from the NTSC
signal type. Pressing the pushbutton cycles
the black setup from on to off. Black setup
establishes black at 7.5 IRE level. Turning
black setup off reduces the black level
portions of the test pattern signals to 0 IRE.

VP400 Series Video Pro Form7343A Operation Manual
14
Tests Menu
Pressing the TESTS pushbutton displays a
Tests menu. This menu lists special tests that
can be selected. Pressing the pushbutton
beside the items listed in the Tests menu
display results in a sub-menu for that item.
The sub-menus for these tests are explained
in the following sections.
Sequence Sub-Menu
The Sequence sub-menu permits testing of a display by applying a sequence of defined formats
and video patterns. Test sequences are created using custom editing software and a PC interface
to the Sencore 400 series VideoPro Generators. Check with the factory on the availability of
Video Generator Management (VGM) software. The firmware in the 400 series generators
contains a sample sequence in memory.
In the Sequence sub-menu, pressing the + or –
Scroll pushbutton increments through the
defined sequence. Each sequence loads a
specified format and pattern that is output by
the generator. The generator output can be
turned on or off during a sequence step with
the pushbutton to the bottom right of the
display. An asterisk indicates when the
generator output is ON. The sync type can be
selected with the pushbuttons to the right of
the display. The red, green and blue video
outputs can be gated on or off provided the
selected format permits RGB gating.

VP400 Series Video Pro Form7343A Operation Manual
15
Burn-In Sub-Menu
The Burn-In sub-menu enables you to cycle automatically and continuously through each of the
video test patterns for the selected format. The pushbutton to the bottom left of the display is the
Run/Stop button. Pressing the pushbutton to indicate “RUN” starts the generator cycling through
each of the video test patterns. Pressing the pushbutton to indicate “STOP,” results in a single
continuous test pattern.
The generator output can be turned on or off
during burn-in with the pushbutton to the
bottom right of the display. An asterisk
indicates when the generator output is ON.
The sync type can be selected with the
pushbuttons to the right of the display. The
red, green and blue video outputs can be gated
on or off, provided the selected format
permits RGB gating (not with YPbPr or
ATSC RF).
Audio Sub-Menu
The Audio sub-menu provides
selections to turn on or off the left and
right stereo audio outputs of the
generator. Pressing the pushbutton
beside the display toggles the left or
right audio signal on or off as indicated
in the display. The L Audio menu
button turns on and off the RF audio
modulation in the NTSC RF Signal type.
HDCP Sub-Menu
An HDCP sub-menu results when the HDCP field is selected in the TESTS menu by pushing the
button beside the display item “HDCP.” HDCP testing is an optional feature of a VideoPro
generator equipped with DVI (VP401, VP403 models). A VideoPro equipped with the optional
HDCP testing capability, provides high-bandwidth digital copy protection (HDCP) testing of
HDCP compliant digital video displays. A VideoPro which does not include this testing option
displays “HDCP Test HDCP Option Not installed” in the HDCP sub-menu. Press the button
beside the display “Exit” field to return to the TESTs menu.

VP400 Series Video Pro Form7343A Operation Manual
16
Options Menu
The Options menu appears when the OPTIONS pushbutton is pressed. The Options menu
provides options regarding several of the operational system settings of the generator, including
the Power Save function and format clear/reload memory management.
The Power Save function of
the 400 series generators
provides several power
saving features. First, it
turns off the LCD backlight
after 30 seconds to conserve
battery power. Second, it
turns off the power to the
instrument after approximately 30 minutes
when pushbutton activity is not detected.
These power saving features can be disabled
by turning the Power Save function “OFF”.
Press the pushbutton beside the Pwr Save
indicator to toggle the Power Save function
on or off.
Note: You can turn the LCD backlight on or
off with the front panel BACKLIGHT
pushbutton.
The Pwr Save function operates differently
when the AC Power Adapter is connected to
the generator. After 30 minutes the generator
remains on, but starts to cycle through its
video patterns.
Pressing the clear formats (Clr Fmts) option
pushbutton results in a second menu asking
for confirmation to clear all formats in
memory. Selecting “Yes” in this menu causes
all video formats in factory default memory
locations to be lost. Any user formats created
with custom generator PC control software in
those locations will be lost. There is no way
to stop or undo this operation. The LCD
window shows “All Formats Cleared” when
the process is completed.
Pressing the pushbutton beside the reload
formats (Reload Fmts) option in the display
restores all factory default formats to their
original memory locations. The LCD displays
“Factory Formats Reloaded” when the
process is completed. Pressing the FORMAT
button displays the FORMATS menu to list
the restored memory contents.

VP400 Series Video Pro Form7343A Operation Manual
17
Learn Formats Menu
The Learn Formats function reads EDID format data from a VESA® DDC-compliant display
connected to the generator's DVI output. A list of standard VESA video formats supported by
the monitor is extracted from the EDID data and compared against all of the VESA formats in
the generator's built-in library. A table is then built of all the matching formats. This table can be
viewed by pressing the Details menu button. This table of formats is also used for the DDC Step
function. If DDC comunication cannot be established with the display, the Learn Formats
function reads “FAILED.” For this function to operate, signal connection to the display must be
made through the display’s HD-15 (VGA) connector.
Details
Lists all of the matching VESA standard
video formats from the last successful
Learn Monitor operation. The list is not
modified if the operation fails. The +/–
buttons can be used to page through the
list if there are more than eight (8)
learned formats. You cannot select the
formats using the menu buttons. However,
you can go through all the formats using the
DDC Step Test function.
NOTE: It is possible that the display's EDID
data will include non-VESA formats. These
non-standard formats will not be listed.
DDC Step
The DDC Step sub-menu permits you to
select and step through each of the video
formats in the list produced by the Learn
Formats functions. The generator outputs the
resolution format selected from the list. To
step through and select each format, press the
+ scroll pushbutton. The format selected is
indicated in the center of the display. To turn
the generators output signal on or off, press
the pushbutton to the upper right side of the
display. An asterisk beside the OUT indicator
in the display indicates a signal is being
output by the generator. The format and video
pattern being output by the generator is
indicated in the 2 bottom center lines of the
display.
You may increment video patterns when
testing displays in the DDC Step menu. Press
the – Scroll pushbutton to select a new video
pattern. Repeated presses step through all the
available video patterns. Pressing the RUN
button in the upper left of the display causes
the generator to automatically cycle through
all video patterns. When cycling patterns in
the RUN mode, press the same upper left
menu pushbutton, now shown as STOP, to
restore manual pattern stepping. The video
pattern being output by the generator is
indicated in the bottom center line of the
display.

VP400 Series Video Pro Form7343A Operation Manual
18
Pattern Description and Usage
The 400 Series VideoPro generators contains numerous test patterns for performance testing and
aligning video displays, scan converters, processsors and other video equipment. The test
patterns are selected within the Pattern menu. Press the front panel PATTERN pushbutton to
select the Pattern menu(s). This section contains a brief description of each test pattern and how
it would be used.
Anamorphic
Pattern Description: 32 horizontal by 18 vertical lines crosshatch forming a 16:9 aspect ratio
pattern. When viewed on a display device with standard 4:3 aspect ratio, the pattern will appear
stretched vertically, with crosshatch boxes forming tall rectangles. When pattern is displayed in
non-HD 4:3 format (e.g. NTSC, VESA, or SDTV), and then stretched to 16:9 aspect ratio with a
display device’s anamorphic stretch feature, the crosshatch boxes should form perfect squares.
Pattern Usage: Used to check the accuracy of a
display device’s anamorphic stretch feature. If
anamorphic stretch is working properly, and height
and width are adjusted properly (check with Overscan
pattern), each crosshatch box should be a perfect
square.

VP400 Series Video Pro Form7343A Operation Manual
19
Checker
Pattern Description:
The Checker pattern alternates picture areas of black and white in a checkerboard pattern.
Pattern Usage:
Use this pattern to check the regulation of CRT
video drive power supply circuits. The Checker
pattern produces abrupt, maximum changes in
CRT video drive current. Ideally, this should not
cause the voltage supplied to the video drive
circuits to change (good voltage regulation). If the
power supply does not have good regulation, it
will cause softening or ringing of the vertical line
pattern transitions.
Color Bar
Pattern Description:
Seven equal-width vertical bars with 75% white (gray) at left, followed by three primary and
three secondary colors. Color bars are at 100% saturation with 75% amplitude. Individual colors
can be gated on or off (with the Video Gate buttons) to view only the red, green, or blue
components of the pattern.
Pattern Usage:
Use as an overall check of a display device’s
capability to produce fully saturated primary and
secondary colors. This is especially helpful in
detecting full or partial loss of colors in an older
display. It is also used as a reference input signal
when troubleshooting and signal tracing color
amplifier or color demodulator problems within a
display device.

VP400 Series Video Pro Form7343A Operation Manual
20
Crosshatch
Pattern Description:
16 white horizontal lines and 12 white vertical lines form square boxes on a black background
(32 horizontal by 18 vertical lines in HD modes), with a white dot in the center of each box.
Pattern Usage:
The Crosshatch pattern is used to check and adjust
convergence of red, green and blue pictures. The
horizontal and vertical lines are usually best
observed to detect color fringing resulting from
misconvergence, and the dots are usually best
observed to make fine adjustments.
Even if a display device provides an internally-
generated crosshatch pattern for checking
convergence, it is often best to double-check the
convergence with an externally-generated pattern.
Occasionally, a display’s convergence on an internally-generated pattern doesn’t match its
convergence on external input video signals.
Converge
Pattern Description:
This pattern produces 9 horizontal lines and 17 vertical lines, forming square boxes on a black
background. The lines produced are not white, but are broken into 3 equal segments that
alternate between red, green and blue between intersecting lines. The resulting boxes have equal
distance sides each with red, green and blue segments. The colored line segments alternate to
give each box a red upper left corner and a blue lower right corner.
Pattern Usage:
Use to color converge a display throughout the
entire picture area. When converged, the red,
green and blue segments should form straight
lines of equal thickness. The intersections of
lines clearly show variations or steps from the
straight ideal color converged lines. Use the
color gating feature in the Gating menu to turn
any one of the colors on and off for better
indication of mis-convergence.

VP400 Series Video Pro Form7343A Operation Manual
21
DecodAdj
Pattern Description:
The DecodAdj pattern contains three primary color sections with red on the top, green in the
middle and blue on the bottom. Each primary color section includes a white reference bar, and
below it, two secondary color bars in an alternating pattern of six bars. The two secondary colors
are combinations resulting from mixing the primary color and each of the other two primaries.
Pattern Usage:
Use to adjust a display’s color decoder/matrix
circuit for most accurate color reproduction.
View each color primary section through its
respective red, green and blue color filter.
A chroma gain control should be adjusted to
match the intensity of the reference white bar in
each section to that of the primary color
surrounding it. A chroma hue control should be
adjusted to match the intensity of the secondary
color sections within each primary color block.
Usually, the user menu Color and Hue controls
are used to adjust the blue section, and then
service menu controls are used to adjust the red and green sections. Service menu decoder/matrix
adjustments typically include “RYR (red gain), RYB (red hue), GYR (green gain), GYB (green
hue)” adjustments, or simply a number of “axis” settings.
DecodChk
Pattern Description:
Red, green and blue primary color blocks on a 75% white background. The red and green
primary color blocks are divided into 11 sections which have decreasing color levels from left to
right. The center, or 0 sections, for each color block are the standard 75% color level included in
most test patterns. The color levels decrease in 5 % increments from the left to right.
Pattern Usage:
The DecodChk pattern checks the performance of
the color decoder to determine if the decoder has
red or green color emphasis (often called “push”)
or de-emphasis. Ideally, with the color hue
properly set using the blue section, the 0 center
blue bar should be the same light intensity as the
surrounding 75% white, when viewed through a
blue filter. Looking through a red or green filter at
their respective color bars should show the center
0 bars at the same intensity as the 75% white area.