Kramer VP-704SC User manual

KRAMER ELECTRONICS, LTD.
KRAMER ELECTRONICS, Ltd.
USER MANUAL
SCAN CONVERTERS
Models:
VP-704SC, VP-705SC, VP-706SC
IMPORTANT: Before proceeding, please read paragraph entitled
"Unpacking and Contents"

KRAMER ELECTRONICS, LTD.
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Table Of Contents
Section Page
1 INTRODUCTION 3
1.1 A Word about Scan Converters 3
1.2 Factors Affecting Quality of Results 3
2 SPECIFICATIONS 4
3 HOW DO I GET STARTED? 5
4 UNPACKING AND CONTENTS 5
4.1 Optional Accessories 5
5 CONNECTING THE HARDWARE 5
5.1 Rack Mounting 5
5.2 Connecting the Scan Converter to a Computer and Monitor 5
5.3 Connecting the Video Outputs 5
5.4 Optional Connection of an External Reference Signal 6
5.5 Connecting the Serial Cable 6
5.6 Connecting the AC Power 6
5.7 Turning the Scan Converter On 6
6 ABOUT THE SCAN CONVERTER 7
6.1 Quick-Set Buttons 7
6.2 Special Button Usage on Power-up 7
6.3 Special Multi-Hold Buttons 8
7 MENU STRUCTURE AND FEATURE CONTROL 8
7.1 Status Mode 8
7.2 Adjust Menu 9
7.3 Studio Genlock Mode 10
7.4 Screen Size Mode 10
7.5 Zoom Mode 11
7.6 Manual Set Mode 11
8 ADVANCED MENUS & FEATURES 12
8.1 Advanced Menu 13
8.2 Engineering Menu 15
9 CONTROL AND SETUP USING THE INFRARED REMOTE CONTROL 16
9.1 Introduction 16
9.2 Functions of the RM-SC Infrared Remote Control Unit 17
10 REMOTE MOUSE EMULATOR 19
10.1 Introduction 19
10.2 Hardware Connection 19
10.3 Scan Converter Setup 19
10.4 Using the Mouse Emulator 19
10.5 Toggling Zoom/Pan and Mouse Modes 19
11 RS-232 COMPUTER CONTROL OF THE SCAN CONVERTER 19
11.1 Setup 19
11.2 Sending Commands 20
11.3 Responses to Commands 20
11.4 Notes on Sending Commands 20
11.5 Restricting RS-232 Commands to Certain Units 20
11.6 Changing Baud Rates 20
12 GETTING THE MOST FROM YOUR SCAN CONVERTER 22
13 TECHNICAL DATA 23
13.1 Computer Input 23
13.2 Fuse Replacement 23
14 TROUBLESHOOTING 24
15 LIMITED WARRANTY 26
16 COMPLIANCE NOTICE 27

Kramer Electronics Ltd.
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1 INTRODUCTION
Congratulations on your purchase of this Kramer Electronics Scan Converter. Since 1981, Kramer has been
dedicated to the development and manufacture of high quality video/audio equipment. The Kramer line has
become an integral part of many of the best production and presentation facilities around the world. In recent
years, Kramer has redesigned and upgraded most of the line, making the best even better. Kramer’s line of
professional video/audio electronics is one of the most versatile and complete available, and is a true leader in
terms of quality, workmanship, price/performance ratio and innovation. In addition to the Kramer line of high
quality Scan Converters, such as the one you have just purchased, Kramer also offers a full line of high quality
video scalers, matrix switchers, distribution amplifiers, processors, interfaces, controllers and computer-related
products. This manual includes configuration, operation and option information of the following Kramer Scan
Converters for the video professional. These Scan Converters are similar in operation but differ in features.
VP-704SC VP-705SC VP-706SC
1.1 A Word about Scan Converters
Kramer’s Digital Scan Converters are designed to convert computer signals of varying resolutions and vertical
refresh rates into standard NTSC and PAL video signals. NTSC and PAL television systems are much lower in
resolution than typical computer signals. Computers can often output over three times as many horizontal lines
as standard analog television resolutions. Scan Conversion is the process of fitting a higher number of lines of
information into a lesser number of available spaces. Kramer Scan Converters are designed and manufactured
to the highest possible performance standards and are capable of providing high resolution results, however, it is
important to understand the overall process of scan conversion and its inherent limitations.
1.2 Factors Affecting Quality of Results
There are many factors affecting the quality of results when computer images are converted to standard video.
An entire section of this manual entitled ‘Getting the Most from your Scan Converter’ goes into detail, but here
are a few major points up front.
 Beginning Resolution – As a general rule, the less the conversion ratio, the better the results. Standard
NTSC and PAL resolutions are near the computer’s VGA resolution of 640x480, so generally, the nearer
you begin to that resolution the better the results. The common mistake is to assume that the higher the
beginning computer resolution, the better the NTSC or PAL results. The reverse of this is the actual fact.
Sometimes a lower beginning computer resolution in not possible, but when it is possible, use it.
 Output Display Device – The S-Video or RGB output will provide a better final image, because unlike
the Composite output, the luminance and color signals are kept separate. This results in less color
smearing and a sharper image. When possible, use the S-Video or RGB output, rather than Composite.
 Distance between the computer and Scan Converter – This plays a major role in the final result and
the distance should be kept to a minimum. The Scan Converter is supplied with a high quality 6’
computer input cable. Longer distances are possible, but special measures should be taken in order to
avoid cable losses. These include using high quality (coax-type) cables or adding line amplifiers.
 Output connection cables – Low quality cables are susceptible to interference. They degrade signal
quality due to poor matching and cause elevated noise levels. Therefore, cables should be of the best
quality.
 Interference from neighboring electrical appliances – These can have an adverse effect on signal
quality. For example, an older computer monitor often emits very high electromagnetic fields that can
interfere with the performance of video equipment in its proximity.

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2 SPECIFICATIONS
VP-704SC VP-705SC VP-706SC
Computer Input RGB with HV Sync
RGB with Composite Sync
RGB with Sync on Green
RGB with HV Sync
RGB with Composite Sync
RGB with Sync on Green
RGB with HV Sync
RGB with Composite Sync
RGB with Sync on Green
Maximum Input
Resolution
1600x1200 1280x1024 1600x1200
Maximum Vertical
Refresh Rate
150Hz 150Hz 150Hz
Maximum Horizontal
Scan Rate
100KHz 100KHz 100KHz
Computer Input
Connection
HD15 Jack HD15 Jack HD15 Jack
Input Level RGB @ 0.7V Peak Level
H&V Sync @ TTL
RGB @ 0.7V
H&V Sync @ TTL
RGB @ 0.7V
H&V Sync @ TTL
Video Outputs VGA Loop-thru
Composite Video @ 1V P-P
S-Video @ 1V P-P
RGBS @ 0.7V P-P, TTL Sync
RGBHV @ 0.7V P-P, TTL Sync
YUV (Y,R-Y,B-Y)
VGA Loop-thru
Composite Video @ 1V P-P
S-Video @ 1V P-P
RGBS @ 0.7V P-P, TTL Sync
RGBHV @ 0.7V P-P, TTL Sync
YUV (Y,R-Y,B-Y)
VGA Loop-thru
Composite Video @ 1V P-P
S-Video @ 1V P-P
RGBS @ 0.7V P-P, TTL Sync
RGBHV @ 0.7V P-P, TTL Sync
YUV (Y,R-Y,B-Y)
Video Standard NTSC/PAL Switchable
NTSC/PAL Switchable NTSC/PAL Switchable
Output Connectors Composite Video on BNC,
S-Video on 4-Pin Mini-DIN
RGBS on BNCs
YUV (shares RGBS BNCs)
Composite Video on BNC
S-Video on 4-Pin Mini-DIN,
RGBS on BNCs
YUV (shares RGBS BNCs)
Composite Video on BNC
S-Video on 4-Pin Mini-DIN,
RGBS on BNCs
YUV (shares RGBS BNCs)
Genlock Signal N/A Composite or Blackburst 1V P-P Composite or Blackburst 1V P-P
Genlock Connection N/A 2 BNC (Loop-through) 2 BNC (Loop-through)
Image Scaling Proprietary Method
Proprietary Method Proprietary Method
AutoTrack™ Proprietary Automatic Image
Sizing and Positioning
Proprietary Automatic Image
Sizing and Positioning
Proprietary Automatic Image
Sizing and Positioning
Zoom & Pan 2X
2X 2X
Flicker Reduction 2, 4 or 6-Line
2, 4 or 6-Line 2, 4 or 6-Line
Control Type Manual Front Panel Buttons
(with Front Panel LCD Display)
RS-232 Serial
Infrared Remote Control
Manual Front Panel Buttons
(with Front Panel LCD Display)
LCD Display
RS-232 Serial
Infrared Remote Control
Manual Front Panel Buttons
(with Front Panel LCD Display)
LCD Display
RS-232 Serial
Infrared Remote Control
Subcarrier Lock Locked to Line Frequency
Locked to Line Frequency Locked to Line Frequency
Weight 2.0 kg (4.4lbs.) Approx.
2.0 kg (4.4lbs.) Approx. 2.0 kg (4.4lbs.) Approx.
Dimensions (HxWxD) 19" x 7" x 1.75” (1RU)
(482mm x 178mm x 44.5mm)
19" x 7" x 1.75” (1RU)
(482mm x 178mm x 44.5mm)
19" x 7" x 1.75” (1RU)
(482mm x 178mm x 44.5mm)
Power Source 100-240VAC, 50/60 Hz
100-240VAC, 50/60 Hz 100-240VAC, 50/60 Hz
Power Consumption 650mA
650mA 650mA

Kramer Electronics Ltd.
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3 HOW DO I GET STARTED?
The fastest way to get started is to take your time and do everything right the first time. Taking 15 minutes to
read the manual may save you a few hours later. You don’t even have to read the whole manual - if a certain
section doesn’t apply to you, you don’t have to spend your time reading it.
4 UNPACKING AND CONTENTS
The items contained in your Kramer accessory package are listed below. Please save the original box and
packaging materials for possible future transportation and shipment of the unit.
 Scan Converter
 AC Power Cable
 VGA Input Cable
 Composite Video Output Cable
 S-Video Output Cable
 75 OhmTermination BNC Plug (VP-705SC and VP-706SC Only)
 Infrared Remote Control Unit
 Rackmount Screws (Qty 4) for EIA 19” Racks
 User Manual
 Kramer Concise CD ROM Product Catalog
4.1 Optional Accessories
The following optional accessories, which are available from Kramer, can enhance implementation of your Scan
Converter. For information regarding these accessories, contact your Kramer dealer.
 RGB Output Cable Assembly – 4 or 5 BNC Type
 YUV Output Cable Assembly – 3 BNC Type
 RS-232 Cable
 BNC Computer Input Adapter – HD15 to 5 BNCs
5 CONNECTING THE HARDWARE
The first step is to connect the Scan Converter and related hardware. Below is a drawing of the rear panel.
(The VP-704SC does not have the GL IN and GL OUT connectors.)
B
B-Y
VS
G
Y
HS
CS
R
R-Y
CV
SV OUT OUTPUTS
VGA OUT
VGA INRS232
POWER
100-240V 50-60HZ
GL
IN
GL
OUT
o
5.1 Rack Mounting
Each of the Scan Converters described in this manual mount in a standard 19” (1RU) EIA rack assembly. These
devices do not require spacing above or below the unit for ventilation. Four standard rackmounting screws are
provided for each of the four corner holes in the rack ears.
5.2 Connecting the Scan Converter to a Computer and Monitor
Disconnect the computer monitor’s input cable from the computer’s VGA output connection. Connect this cable
to the 'VGA OUT' connector on the back of the Scan Converter. Macintosh computers that do not have an
HD15 type output connector may require an additional adapter. Next, use the VGA cable supplied to connect
the VGA output connection from the computer to the ‘VGA IN’ connector on the back of the Scan Converter.
After these connections are made and the computer and monitor are switched on, you will see the computer’s
output displayed on the computer monitor as before, even when there is no power to the Scan Converter.
5.3 Connecting the Video Outputs
The Scan Converter provides several different output types to allow connection to various video displays and
other equipment. The choice of output type depends on what your equipment can accept.

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 Composite Video - use the composite video cable provided to connect from the composite video output
on the back of the Scan Converter (the BNC connector marked CV) to the composite video input of your
target video equipment.
 S-Video - use the S-Video cable provided to connect from the S-Video output on the back of the Scan
Converter to the S-Video input of your target video equipment. S-Video provides improved performance
over Composite Video.
 RGB with Composite Sync - Use a 4xBNC to 4xBNC cable to link from the Red, Green, Blue, and
HS/CS outputs to the video display. The Scan Converter defaults to outputting negative-going CS
(Composite Sync) on the HS/CS connector, but if you encounter problems then it is likely that this has
been changed - see 'Advanced Features' later in this manual. Please note that this output’s horizontal
scan rate is 15.75KHz and is not intended for connection to a computer monitor.
 RGB with H&V Sync - Use a 5xBNC to 5xBNC cable to link from the Red, Green, Blue, HS/CS and
VS outputs to the video display. Since the Scan Converter defaults to outputting CS (Composite Sync)
on the HS/CS and VS connectors, so you must see 'Advanced Features' later in this manual in order to
change this to the required separate H&V Syncs. It is recommended that another output be used, until
operation of the unit is understood.
 YUV Component (Y,R-Y,B-Y)- Use a 3xBNC to 3xBNC cable to link from the Y, R-Y and B-Y
outputs to the video display. If the Scan Converter is set to output RGB mode (this is the default) it will
be necessary to switch to YUV. See the section on switching between RGB and YUV modes in the
Advanced Features section of this manual. It is recommended that another output be used, until
operation of the unit is understood, because in the YUV Mode, no other video output signals are present.
5.4 Optional Connection of an External Reference Signal (N/A on VP-704SC)
The VP-705SC and VP-706SC have the ability to synchronize their video output with a master Reference
Signal, in the form of a Composite Video or Blackburst source. This is done by connecting the Reference
Signal to the BNC connector marked 'GL IN'. A loop-through output is available at the 'GL OUT' BNC
connector for connection to other devices. Note - If no loop-through is required, you must connect the supplied
75 Ohm BNC termination plug to the 'GL OUT' connector instead; otherwise, the unit may not be able to
maintain a lock on the Reference Signal.
Synchronization is not automatic; you need to enable it within the unit. You should also ensure that the
Composite Video or Blackburst signal used is of the right standard (PAL or NTSC), and that it is a clean, stable,
standard signal. Video signals from consumer VCRs and some non-standard equipment may not be suitable.
5.5 Connecting the Serial Cable
The Scan Converter can be controlled from a computer, and used as a remote Microsoft® serial mouse emulator
by connecting its RS-232 port to a computer's RS-232 port. See the section on 'RS-232 Computer Control' later
in this manual on how to use this control feature (RS-232 Control is the default, and merely requires connecting
a suitable RS-232 cable).
5.6 Connecting the AC Power
The Scan Converter requires an AC input power source of 100-240VAC@50-60Hz. With the Power On/Off
switch on the rear of the Scan Converter in the Off position, plug the AC Cable supplied into the AC Receptacle
on the back of the unit and plug the AC Cable into the power outlet.
5.7 Turning the Scan Converter On
Make sure that all cables are connected and that all other equipment is turned on - your computer monitor
should be functioning normally. The Scan Converter’s AC Power Switch on the rear panel should be switched
on. When using a multi-purpose TV-Monitor, be sure and select the correct line input (AUX or AV). The video
monitor should now be displaying the same picture as is on the computer monitor.
When the Scan Converter is switched on, the green LED indicator on the front panel will illuminate. If there is a
picture on the video monitor, but it is the wrong shape, position or color it may be necessary to alter some of the
status settings before a good picture is displayed. For example, it may be necessary to switch to PAL or NTSC
settings. Further details on selecting the correct settings for your displays follow in the Advanced Features
section. If there is no picture on the video monitor, then go to the Troubleshooting section.

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If there is no picture on the video monitor, go to the Troubleshooting section. One possible cause is that the
YUV output is enabled, which will blank out all other video outputs. This is also covered in the Advanced
Features section.
6 ABOUT THE SCAN CONVERTER
There are 3 ways to control the Scan Converter:
 By the Buttons on the Front Panel in conjunction with the LCD (Liquid Crystal Display).
 By the Infrared Remote Control unit.
 Directly from the computer via the RS-232 Serial Port.
Each control method has its own section of this manual to describe the operation.
Shown below is a diagram that indicates the main features of the front panel of the VP-706SC. All three Scan
Converter models appear the same and their basic operation is identical.
MENU
+
OS/US FREEZE
VP-706SC
Digital Scan Converter
IR
POWER
KRAMER VP-706SC
 LCD - The top line of the liquid crystal display (LCD) always indicates the current mode of the Scan
Converter. At power-up, this will be the 'Status' mode, but will change, depending on what the user
wants the unit to do. The bottom line always indicates the value that is or will be adjusted by the various
control methods
 Power On LED – When the Scan Converter is powered up, the button labeled POWER will illuminate
green.
 Menu Button – This is used to initiate Front Panel control of the unit and select the various options and
features to change.
 OS/US (-) Button – This is a dual-purpose button that will be described in a moment, but is normally
used to decrease (or de-select) the currently displayed option or feature.
 Freeze (+) Button – This is another dual-purpose button, but normally used to increase (or set) the
currently displayed option or feature.
 Audible Indicator – The internal sounder is used to confirm that a setting has changed, and to indicate
that the Scan Converter is saving the settings to non-volatile memory. You will hear it regularly during
normal use, but it can be disabled if needed.
6.1 Quick-Set Buttons
These are the dual-purpose buttons described earlier and only function when in Status mode (i.e. the top line of
the LCD says 'Status'). They are provided for quick access to certain often-used functions - i.e. Toggling
Underscan /Overscan and Freeze On/Off.
6.2 Special Button Usage on Power-up
Certain buttons can be held down when applying power to the unit, to perform certain functions:
 Factory Reset – Hold down both the OS/US and Freeze Buttons when turning the unit on. This will
reset the unit to Factory Settings (and set the unit into NTSC video mode). It should only be used if the
unit's settings give an invalid output that the user cannot exit from, as all user-settings will be lost. Note-
use this procedure as a last resort.
 Set to NTSC Mode – This is done by holding the OS/US Button down when turning on the unit. This
changes the non-volatile PAL/NTSC setting to NTSC, and will be remembered even when power is
removed.
 Set to PAL Mode – This is done by holding the Freeze Button down when turning on the unit. This
changes the non-volatile PAL/NTSC setting to PAL, and will be remembered even when power is
removed.

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6.3 Special Multi-Hold Buttons
Certain buttons can be held together when the unit is on to perform other functions.
 Store Current Settings - This is done by holding the MENU and FREEZE (+) Buttons in together for
about 2 seconds and can be done at any time. This stores the current settings (e.g. Overscan, YUV
Mode, etc.) in Non-Volatile Memory and cause the Scan Converter to come up in those modes the next
time it is turned on.
This option will emit a high-pitched beep when complete to indicate that data has been successfully stored. If
you manage to store an invalid setting, you may need to do a Factory Reset (see above).
If you hear high pitch beeps at other times, it indicates that other data is being stored into memory – e.g.,
information the Scan Converter has deduced about the graphics resolution coming from your computer, such as
when you change your screen resolution.
7 MENU STRUCTURE AND FEATURE CONTROL
This section goes through the Main Menus available via the LCD and what control they provide over the Scan
Converter. Internally, the Infrared and Serial control links change the features in the same way as the buttons,
so this section is required reading whatever the final method of control is likely to be.
Advanced features are covered in a later section of this manual.
7.1 Status Mode
In Status Mode, you are presented with a summary of some of the current settings. Almost all of these are
repeated (and adjustable) elsewhere in the menu system, but some are not.
7.1.1 Overscan - Quick Set
This is called Quick Set because you don't have to scroll through menus to alter this option. The OS/US (-)
Button toggles between Underscan and Overscan.
 Underscan Mode (sometimes know as Compress mode) will leave a border around the image.
 Overscan Mode has no border and the displayed image, when set correctly, is larger than the video
monitor screen.
 If Underscan and Overscan don't give you the image sizes you expect (for example, Overscan still shows
a border), then make sure you perform the AutoTrack™ function, which is described later in this section
of the manual.
 Both the Underscan and Overscan sizes are user-adjustable and the method of doing so will be described
later under the 'Screen Size...' section.
7.1.2 Freeze - Quick Set
This is another Quick Set button, labelled 'FREEZE'. When pressed the first time, the unit will enter a special
mode where the video image and all other features are frozen.
 Freeze will remain active until disabled by pressing 'FREEZE' again, and the whole unit will remain
frozen until this happens.
 No other features are accessible while in Freeze Mode, except the RESET button on the Remote Control
unit.
7.1.3 Total Lines - Information
This is for information only and will appear when in Status Mode to show how many scan lines are in the
incoming computer picture. It includes blanked lines that are not normally viewable, so a 1024x768 image
might actually have a total of 806 lines in it, with 38 of them used for vertical blanking.
7.1.4 Vert Freq - Information
Again, this is just for information and shows the Vertical Refresh rate of the incoming computer signal.
Multiply this by the 'Total Lines' value to give the Horizontal Scan Rate. While high refresh rates are generally
more acceptable when displayed on computer monitors, Scan Converters prefers a low refresh rate so that their
capture circuitry has more time to capture more pixels, thus giving a clearer picture.

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7.2 Adjust... Menu
You can enter the ‘Adjust…’ Menu directly from the Status Mode by pressing the MENU Button once. This
enters the beginning of a number of Menus that allow complete control over the Scan Converter's features. All
Menus time-out after about 25 seconds of inactivity and return you to the Status Mode. Alternatively, you can
press the + Button when 'Exit' is displayed at the end of each Menu list to return to the previous Menu.
The various options from the ‘Adjust…’ Menu are all selected by pressing the MENU Button repeatedly:
7.2.1 Flicker Reduction
The unit defaults to the 4-Line Flicker Filter Mode, which is best for 800x600 and 1024x768 resolutions.
Pressing the + or – Buttons when this option is displayed will change this to 2-Line or 6-Line.
 2-line Mode is not advisable, unless the vertical image softening that is present because of higher flicker
reduction modes needs to be avoided. Line dropping will be common at this setting.
 4-line Mode is best for resolutions around 800x600 and 1024x768, but is subject to personal taste and
the exact nature of the graphics or text being displayed. Thin horizontal lines cause the most flicker, and
if this is seen, then the highest flicker reduction setting should be used.
 6-line Mode offers the maximum amount of flicker reduction and allows images, even CAD wire-frame
drawings, at resolutions above 1024x768 to be displayed without line dropping. This mode may not be
suitable for low resolutions, because of excessive vertical softening of the image, but this is a mater of
personal preference.
7.2.2 AutoTrack™
AutoTrack™ is Kramer’s unique auto setup routine that automatically sizes, shifts and centers the computer
image onto the video monitor. Once activated, this feature will scan the incoming computer image to determine
its size and position and optimize it for display on the desired video display.
When the Scan Converter first encounters a new screen resolution or refresh rate, it will estimate how to best
display this on the video monitor. Sometimes this estimate needs refining and the AutoTrack™ function allows
the unit to search for the image edges to improve on this.
 Before running the AutoTrack™ function, set the computer so that it is displaying a light colored
background or wallpaper with defined edges in full screen mode. If you have a Windows operating
system, make sure it is maximized to use the full screen. Black or very dark colors along the edge of the
image may cause AutoTrack™ to misread the source image’s size.
 If you are running MS DOS, it is only recommended to use this function when the full DOS screen is
being used by a fairly bright color or shade of white.
 Only use this feature when the full area of the computer screen is being used - this will ensure that the
unit 'sees' the edges correctly, and performs its task without errors.
 Pressing the + Button when AutoTrack™ is displayed on the LCD will start this routine and it will take
about 15 seconds. During this time the image on the video monitor will move around, but at the end of
this the image should be stable and correctly sized and centered.
 If you encounter problems when running AutoTrack™, you can adjust the level at which it works - see
the LEVEL button described later.
 Once complete, the AutoTrack™ routine will remember this particular resolution and refresh rate so that
you should not need to re-do this function next time. The only exceptions are if you change the
computer’s screen resolution, do a Factory Reset or use this unit with a different computer.
 If the AutoTrack™ feature does not look like it is finding the edges of the display correctly, then you can
press RESET to stop it going any further.
Note - A high-pitched beep will be heard when the AutoTrack™ function is complete.
7.3 Studio Gen... Mode (Genlock not available on the VP-704SC)
This is a Sub-Menu and selected by pressing the + Button when ‘Studio Gen…’ is displayed on the lower line of
the LCD display. Within this Sub-Menu, you can define the Scan Converter's Studio Genlock features - i.e.
whether Synchronization Mode is On or Off, Subcarrier Phase, etc. All these settings can be stored in non-
volatile memory by using the STORE feature (i.e. hold the Menu and the + Button together or press the STORE
button on the Remote Control).
7.3.1 Genlock - Locking to an External Reference Signal

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This option lets you turn the Studio Genlock feature On and Off.
 In the Off condition the Scan Converter functions using its own internal sync generator.
 In the On condition the Scan Converter will synchronize itself to the external reference signal fed into
the GL IN BNC connector on the rear of the unit. If no signal (or a poor signal) is present, you may get
erratic results from the unit, or no picture at all.
7.3.2 SC Ph. (Phase) Shift - Coarse Subcarrier Phase Adjustment
The Scan Converter has a full 360 degree phase adjustment range when locking to an external source, but this is
broken down into a Coarse Adjustment (with two settings) and a Fine Adjustment (SC Phase - see next menu
option).
 With SC Ph. Shift set to 0, the SC Phase setting allows adjustment from -150 to +150 degrees relative to
the incoming reference signal. This is the normal setting.
 With SC Ph. Shift set to 180, the SC Phase values from -150 to +150 are all offset by 180 degrees, giving
an effective SC phase adjustment from +30 to +180 through to -180 to -30.
 Use the setting of '0' when you need a phase shift nearer 0 degrees.
 Use the setting of '180' when you need a phase shift nearer +/- 180 degrees.
7.3.3 SC Phase - Fine Subcarrier Phase Adjustment
This value, ranging from -150 to +150 degrees will fine-adjust the phase of the Scan Converter’s subcarrier
signal, relative to the incoming reference signal. This is added to the SC Ph. Shift 'coarse' value detailed above.
 With SC Ph. Shift set to 0, and with SC Phase set to a value of 0 degrees, the output signal should be
directly in-phase with the incoming reference signal.
 This value can be adjusted to allow for different delays, such as cable lengths, between the unit and a
video switcher.
 Phase jitter is at a minimum when SC Phase is nearest 0 degrees.
 A poor incoming signal may reduce the range of SC Phase values that the unit can still achieve a lock
with.
 Phase adjustment is most accurate, and has the least jitter, when SC Phase is set nearest to 0 degrees.
7.3.4 H Phase - Horizontal Sync Phase Adjustment
This value will adjust the relative difference between the Scan Converter's horizontal synchronization signal,
and the incoming reference signal. Therefore, during Genlock Mode, it will also adjust the unit's SC/H phase,
i.e. the timing relation between the horizontal sync and the subcarrier.
 At a value of 0, both should be in phase with each other - this is the default setting.
 A negative value will delay the Scan Converter’s output relative to the reference signal.
 A positive value will advance the Scan Converter's output relative to the reference signal.
 Each step adjusts the phase by 1/8 of the NTSC or PAL subcarrier period (i.e. 45 degrees), up to a
maximum of around 500ns advanced or delayed.
 Ideally, SC Phase will first be adjusted to correct delays in the subcarrier signal. Then H Phase will be
adjusted to correct the SC/H phase.
 If you have an unreliable color lock, it is advisable to adjust this setting (using an oscilloscope), to ensure
that the reference subcarrier burst, and the Scan Converter's subcarrier burst, are aligned together . If
they are too far off-alignment, you will not get a reliable color subcarrier lock.
7.4 Screen Size... Mode
This is a Sub-Menu selected by pressing the + Button when the ‘Screen Size…’ message is displayed on the
lower line of the LCD. It displays a number of values that can be used to adjust the Scan Converter's output to
suit your video display device. You should have ideally already performed the AutoTrack™ function, so that
the unit knows what area of the computer image actually contains the display you want converted to video,
otherwise you may have to repeat the adjustments for different screen resolutions.
 The values shown depend on whether you are in Underscan or Overscan mode, so make sure you have
the appropriate one selected before proceeding to change the values.
 The values are also separately stored for NTSC and PAL outputs - adjusting one will not affect the other.