Kramer VP-791 User manual

KRAMER ELECTRONICS LTD.
USER MANUAL
MODEL:
VP-791
SDI to DVI/HDMI Scaler

VP-791
Operating Instructions
Version K 1.4

This manual explains how to operate your VP-791 image scaler which is designed to provide
users with a powerful and flexible method of driving large display devices from SD-SDI, HD-SDI
and 3G-SDI source.
If you have any queries relating to this or any other product supplied by Kramer visit our Web
site www.kramerelectronics.com .
For technical support e-mail [email protected] .
COPYRIGHT
This document and the software described within it are copyrighted with all rights reserved. Under
copyright laws, neither the documentation nor the software may be copied, photocopied, reproduced,
translated, or reduced to electronic medium or machine readable form, in whole or in part, without
prior written consent of Kramer Electronics Ltd ("Kramer"). Failure to comply with this condition may
result in prosecution.
Kramer does not warrant that this product package will function properly in every hardware and
software environment.
Although Kramer has tested the hardware, firmware, software and reviewed the documentation,
KRAMER MAKES NO WARRANTY OR REPRESENTATION, EITHER EXPRESS OR IMPLIED,
WITH RESPECT TO THIS HARDWARE, FIRMWARE, SOFTWARE OR DOCUMENTATION, THEIR
QUALITY, PERFORMANCE, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
THIS SOFTWARE AND DOCUMENTATION ARE LICENSED 'AS IS', AND YOU, THE LICENSEE,
BY MAKING USE THEREOF, ARE ASSUMING THE ENTIRE RISK AS TO THEIR QUALITY AND
PERFORMANCE.
IN NO EVENT WILL KRAMER BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
SOFTWARE OR DOCUMENTATION, even if advised of the possibility of such damages. In
particular, and without prejudice to the generality of the foregoing, Kramer has no liability for any
programs or data stored or used with Kramer software, including costs of recovering such programs or
data.
Copyright (c) 2011 All World-wide Rights Reserved
All trade marks acknowledged
Kramer operates a policy of continued product improvement, therefore specifications are subject to
change without notice as products are updated or revised.
E&OE.

Contents
SAFETY WARNING: 󰾡󰾡󰾡󰾡1
INTRODUCTION󰾡󰾡󰾡󰾡󰾡󰾡󰾡󰿁󰿁󰿁󰿁󰾡󰿁󰿁󰿁󰿁󰿁󰿁󰿁󰿁󰾡󰾡󰾡󰾡󰾡󰿁󰾡2󵫓󲗗󱿘
1.1. General Introduction 2
1.2. Packing List 2
VP-791 SYSTEM DESCRIPTION 󰿁󰿁󰿁󰿁 3
2.1. Product Overview 3
2.2. Product Specification 3
2.2.1. Power Supply Requirement 3
2.2.2. 3GSDI Input 3
2.2.3. Display Output 3
VP-791 CONTROL 󰾡󰾡󰾡󰾡 4
3.1. Menu Tree 4
3.2. Introduction 7
3.3. Main Menu 9
3.4. Input 9
3.5. Output 9
3.5.1. Output Mode 9
3.5.2. Location 9
3.5.3. Optimize for Display 10
3.5.4. DVI Range 10
3.5.5. Frame Rate 10
3.5.6. (Available) Frame Rates 11
3.5.5. I/O Lock 11
3.5.6. Native Color Temp 11
3.5.7. Output Gamma 11
3.6. Color 12
3.6.1. Black-Level Offset 12
3.6.2. Black-Level 12
3.6.3. Contrast 12
3.6.4. Saturation 12
3.6.5. Hue 12
3.6.6. RGB values 12
3.6.7. Color Temp 12
3.6.9. Input Gamma 12
3.7. Geometry 13
3.7.1. Horizontal and Vertical Position 13
3.7.2. Aspect Ratio 13
3.7.3. Warp 13
3.7.4. Picture Format 13
3.7.5. Overscan 14
3.7.6. Pan Tilt Zoom 14
3.8. Enhancement 15
3.8.1. Sharpness 15
3.8.2. Detail 15
3.8.3. Video Filters 15
3.9. System 16
3.9.1. User 16
3.9.2. Names and Profiles 16
3.9.3. Test Pattern 16
3.9.4. Display Mode 16
3.9.5. Switching Transition 16
3.9.5. Menu Settings 16
3.9.6. Network Settings 17
3.9.7. Factory Defaults 17
REMOTE CONTROL WEB SERVER 󰾡󰾡󰾡󰾡 18
4.1. Introduction 18
4.2. Installing the Software 18
4.3. Discovery Tool 18
4.4. Software Operation 18

FIRMWARE UPDATE 󰾡󰿁󰾡󰾡19
5.1. Introduction 19
5.2. Updating Firmware 19
ENVIRONMENTAL AND EMC 󰾡󰿁󰾡󰾡20
6.1. Recommended Operating Conditions 20
6.2. Storage 20
6.3. CE and FCC Compliance 20

SAFETY WARNING:
1. THERE ARE NO USER SERVICEABLE PARTS WITHIN THE UNIT. REMOVAL OF THE TOP COVER
WILL EXPOSE DANGEROUS VOLTAGES. DO NOT OPERATE THE UNIT WITHOUT THE TOP COVER
INSTALLED.
2. ENSURE THAT ALL ELECTRICAL CONNECTIONS (INCLUDING THE MAINS PLUG AND ANY
EXTENSION LEADS) ARE PROPERLY MADE AND COMPLY WITH ELECTRICAL SAFETY
REGULATIONS.
3. ENSURE THAT THE INTEGRITY OF THE EQUIPMENT ISOLATION BARRIER IS MAINTAINED WHEN
CONNECTING TO OTHER EQUIPMENT. THIS MEANS THAT ONLY LOW VOLTAGE ISOLATED
CIRCUITS MAY BE CONNECTED TO THE SIGNAL INPUTS AND OUTPUTS. IF ANY DOUBT EXISTS
CONSULT QUALIFIED SERVICE PERSONNEL.
4. TO PREVENT SHOCK OR FIRE HAZARD DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. IF SUCH EXPOSURE OCCURS, REMOVE THE PLUG FROM THE MAINS OUTLET AND
HAVE THE EXPOSED UNIT CHECKED BY QUALIFIED SERVICE PERSONNEL.
5. DO NOT CONTINUE TO OPERATE THE EQUIPMENT IF YOU HAVE ANY DOUBT ABOUT IT
WORKING NORMALLY, OR IF IT IS DAMAGED IN ANY WAY. WITHDRAW THE MAINS PLUG FROM
THE MAINS OUTLET AND CONSULT QUALIFIED SERVICE PERSONNEL.
6. DO NOT REMOVE ANY FIXED COVERS UNLESS YOU ARE QUALIFIED TO DO SO AND EVEN THEN
WITHDRAW THE MAINS PLUG FROM THE MAINS OUTLET BEFORE YOU START.
7. THIS EQUIPMENT CONTAINS NO USER SERVICEABLE PARTS. REFER ALL SERVICING AND
MAINTENANCE TO QUALIFIED SERVICE PERSONNEL.
8. TO AVOID EXPLOSION, DO NOT OPERATE THIS EQUIPMENT IN AN EXPLOSIVE ATMOSPHERE

INTRODUCTION
1.1.
General Introduction
VP-791 is a very flexible image scaler developed specifically for driving large screen displays from SD-
SDI, HD-SDI and 3G-SDI serial digital source.
VP-791 features a state of the art digital image processor which provides market leading HD& SD per-
pixel multiple Iow-angle motion-adaptive de-interlacing and automatic film pull-down correction for 3:2
and 2:2, significantly outperforming the capabilities of benchmark competitor products.
VP-791 features excellent image processing algorithms for the very best scaling, film and video noise
reduction and MPEG artefact reduction.
VP-791 uses a high performance SDI de-serializer with cable equalization.
The output format can be set to I/O Lock mode where it locks the output frame rate to the input frame
rate dynamically without frame rate conversion so as to reduce system latency, or it can be set to a fixed
output frame rate for driving basic screens which are not 50Hz-compatible. Furthermore, the VP-791
can be set to have the output resolution match the input resolution to preserve aspect ratio. A Low
latency mode with non-motion adaptive reduced processing is available to further reduce latency.
Outputs are available in DVI digital formats.
VP-791 supports Pan, Zoom and Tilt to select a part of the input image, fill the screen and pan within it.
VP-791 features embedded warp functions to adjust the image in a projection scenario to match a
rotated, tilted or curved screen. For 9:16 portrait mode signage special predefined warp maps are
available to rotate and stretch a video image to fill a +/-90° rotated display panel.
System control is via an OSD controlled by keys on the front panel or through an intuitive ‘Windows’
application connected via a normal RS232 serial port or via TCP/IP (ethernet).
1.2.
Packing List
VP-791 is supplied with the following:
1) This manual
2) 3 pin plug IEC mains cable
3) DVI-D output cable
4) CD

VP-791 SYSTEM DESCRIPTION
2.1.
Product Overview
VP-791 is designed to accept the input signals:
3GSDI and HDSDI and SDI (Serial Digital Interface) via BNC
2.2.
Product Specification
This section provides technical details of the VP-791 input and output connections.
2.2.1.
Power Supply Requirement
12V DC table top power supply requiring a 100V-264VAC 50 and 60Hz mains connection.
2.2.2.
3GSDI Input
Format: SD-SDI
HD-SDI YCbCr 4:2:2 serial digital component video
3G-SDI 4:2:2 serial digital component video
Input impedance: 75 ohms.
SMPTE 292M, SMPTE 259M-C and SMPTE 424M compliant, accepts 484i, 576i, 720, 1080i and 1080p
single link formats at 270Mb, 1.485Gb or 2.97Gb rates.
2.2.3.
Display Output
A DVI-D output connector is provided. The DVI-D connector will support HDMI 1.3 with 36-bit video
when connected to a suitable HDMI 1.3 receiver.

VP-791 CONTROL
3.1.
Menu Tree
VP-791 Menu Tree
1st Level
2nd Level
3rd Level
4th Level

3.2.
Introduction
The VP-791 units have the input connector on one side of the housing and the output connector as well
as the communication ports on the opposite side. The keypad for controlling VP-791 is located on the
input connectors side.
1 –Keypad with three keys for OSD menu navigation (Menu, Down and Up).
With the Menu key the OSD menu is activated. The up and down keys are used for OSD menu
navigation. To exit the OSD menu or any submenu navigate go to the Exit item and press the menu key.
To access a submenu navigate to it and press the menu key. To apply a change go to the menu item,
press the menu key and make a parameter change with the up and down key. Confirm the change by
pressing the Menu key. This will also bring you back to the submenu.
With the following multiple key presses further functions can be applied:
Keypad unlock: Up and Down
Set output mode to VGA: Menu and Up
Mode reset: Menu and Down
Factory reset: Menu and Up and Down
A factory reset can also be applied when pressing the factory reset key combination at power up. The
keys have to be kept pressed for about 10 seconds until the 3GSDI input LED stops flashing. If the keys
are released during that 10 seconds period the system will get into Updater mode (see section 5) since
the Menu key is part of this key combination.
4
5
6
7
8
1
2

2 –3G-SDI input
3 –
4 –DVI-I output connector (only the digital DVI-D is supported, HDMI receivers can be connected with a
DVI/HDMI adapter cable)
5 –TCP/IP port
6 –USB port
7 –RS232 port
8 –Power supply connector

3.3.
Main Menu
The main menu lists 5 sub menus. The 5 sub menus are Output, Color, Geometry, Enhancement and
System.
On each menu page an Exit menu item is available. Some adjustments are not applicable to all signal
types or operating modes, in which case those non-applicable functions will be ghosted and are not
accessible via the menus.
All menus have a top status line and a bottom line indicating the firmware revision number. In the status
line the currently selected input channel is indicated and the detected mode is identified. The firmware
revision number displays the revision number of the bootloader behind BL, the revision number of the
firmware behind FW and the model number VP-791.
To set up your VP-791 it is recommended that you follow this procedure:
Choose the correct output mode and parameters to suit your screen or projector.
Set the input levels and features appropriately to optimize the appearance of your image.
Set any other parameters to suit your application.
Note: All Input parameters are specific to your chosen input channel and input signal type, they are not
global to the unit. All Output parameters are global
3.4.
Input
The list of inputs are: 3G-SDI and Test Pattern.
Test patterns can be generated by VP-791 without needing an input connected. When Test Pattern is
selected as the input, the required test pattern can be chosen with the menu navigation up and down
keys when the OSD menu is off.
3.5. Output
This menu contains adjustments associated with setting up outputs from the unit. Most items are
collected in the Display Type submenu. Use the up and down keys to scroll to the required item and
press the Menu key.
3.5.1. Output Mode
Settings: 640x480, 800x600, 1024x768, 1280x768, 1280x800, 1280x1024, 1360x768, 1366x768,
1400x1050, 1440x900, 1600x1200, 1680x1050, 1920x1200, 720p (1280x720), 1080p (1920x1080),
480p (720x480), 576p (720x576)
Set up the desired output resolution with output mode. The output mode setting should match the native
resolution of the imaging device to avoid double scaling.
3.5.2. Location
Settings: Front Tabletop, Front Ceiling, Rear Tabletop, Rear Ceiling
The image can be flipped to accommodate different projection scenarios as well as screens mounted
upside down.

3.5.3. Optimize for Display
Settings: DVI forced, Optimized, DVI/HDMI
Internally, the display interface processes data at a full ten bits per color. The color depth on the DVI-D
output is determined by the supported standard of the attached monitor or device when set to
DVI/HDMI. For DVI 1.0 and HDMI 1.1/1.2 devices it is 24 bit, for HDMI 1.3 compliant devices it is up to
36 bit.
DVI forced will output with 24 bit color depth irrespective of the supported standard of the attached
monitor.
When the Optimized setting is enabled the output resolution is automatically set to the native screen
resolution of the attached display if the Aspect Ratio menu item was chosen to Scale or when no input is
detected. The color depth is determined in the same way as when set to DVI/HDMI.
3.5.4. DVI Range
Settings: Default, Limited, Full
When set to Default CEA output modes have limited range, and VESA modes have full range. An
incoming limited range mode is either passed through when the output is set to a CEA output mode or
expanded when the output is set to a VESA mode. An incoming full range mode is either compressed
when the output is set to a CEA output mode or passed through when the output is set to a VESA
mode.
If the HDMI/DVI output does not behave as expected because the HDMI display is not evaluating
AVInfoFrames properly, the range can be changed manually.
A limited video range uses the following greyscale for video information - 8 Bit System: 0x10 .. 0xEF, 10
Bit System: 0x040 .. 0x03BF, 12 Bit System: 0x100 .. 0xEFF.
3.5.5. Frame Rate
Settings: 60 Hz, 50 Hz, 48 Hz, 24 Hz, Auto
In auto mode the output frame rate follows the input frame rate.
Signals with 24Hz, 25H, 48Hz, 50Hz input modes get special treatment, modes with other refresh rates
are displayed at 60Hz.
24Hz input modes will be output at 24Hz if the output resolution is set to either 720p or 1080p and the
Frame Rate setting in the Output Config menu includes 24Hz and 48Hz.
24Hz input mode is displayed at 60Hz. 48Hz input modes will be output at 48Hz if the Frame Rate
setting option in the Output Config menu includes 48Hz.
Otherwise it is displayed at 50Hz.
A 25Hz input mode is output at twice the frame rate 50Hz.
An exception to the 24/25Hz input mode treatment is if the output resolution is set to 480p. 480p is
always run at 60Hz output rate.
50Hz input modes are displayed at 50Hz output rate.
The output frame rate can also manually set to 24Hz, 48Hz, 50Hz or 60Hz
Only 720p and 1080p output modes are available with 24Hz refresh rate.
The 480p output mode is only available at 60Hz refresh rate.
For all other modes 48Hz, 50Hz and 60Hz refresh rates are available.

3.5.6. (Available) Frame Rates
Settings: 60 and 50 Hz, 60, 50 and 24 Hz, 60, 50 and 48, 60, 50, 24 and 48
Limits the possible output frame rates that can be selected. It is primarily to be able to limit the choices
available for the Auto refresh rate configuration.
3.5.5. I/O Lock
Settings: ON, OFF
If I/O Lock is switched off the output is run with a fixed refresh rate determined by the frame rate setting,
which deviates from the input refresh rate, even if both are nominally at the same rate. This causes
occasional frame dropping or repeat. If I/O Lock is on the output refresh rate is following the input
refresh rate. This is achieved by modulating the output clock and works if input and output refresh rate
are nominally at the same rate, when frame rate is set to 60Hz and the video input is also 60Hz. If the
video input rate is 50 Hz and the Frame rate is set to 60Hz, the output is in free run mode. The status
line of the OSD window under Sync Mode indicates if the output signal is locked to the input signal (I/O
Locked) or in free run mode (Free Run) .
3.5.6. Native Color Temp
Settings: 5500, 6500, 7500, 9300, 10000
Native Color Temp allows the user to select from pre-configured color temperatures to match the
display. If both Native Color Temp set here in the Output menu and Color Temp set in the Color menu
are set to the same value, no conversion is performed.
3.5.7. Output Gamma
Settings: 1.0 to 3.0 in steps of 0.1
Output gamma allows to re-gamma video signals with pre-configured gamma values to match the
display. Input gamma and output gamma both default to 2.2. If they are both set to the same value,
there is no effect on the image.
Note: If an adjustment to reduce the level of red in the image is required, select a higher number for the
(input) Color Temp in the Color menu, or a lower number for the Native Color Temp in the Output menu.

3.6. Color
This menu contains adjustments associated with setting up inputs to the unit. Use the Up and Down
keys to scroll to the required item and press the Menu key.
3.6.1. Black-Level Offset
Settings: 0 IRE, 7.5 IRE
Used to select 7.5 IRE black level set-up adjustment.
3.6.2. Black-Level
Settings: -50 to 50 in steps of 1
Black level controls the offset applied to the video signal.
3.6.3. Contrast
Settings: -50 to 50 in steps of 1
Contrast controls the gain applied to the video signal.
3.6.4. Saturation
Settings: -50 to 50 in steps of 1
Control of video saturation, applies to all video inputs but not computer input signals or formats.
3.6.5. Hue
Settings: -50 to 50 in steps of 1
Control of video hue, applies to all video inputs but not computer input signals or formats.
3.6.6. RGB values
This is a user-defined color temperature setting whereby individual R,G,B gain and offset (bias) can be
set so as to accurately calibrate a particular input to the display device.
3.6.7. Color Temp
Settings: 5500, 6500, 7500, 9300
Color Temp allows the user to select from pre-configured color temperatures to match the color
temperature of the incoming signal. If both Color Temp set here in the Color menu and Native Color
Temp set in the Output menu are set to the same value, no conversion is performed.
3.6.9. Input Gamma
Settings: Gamma 1.0, Gamma 1.5, Gamma 2.2, Gamma 2.8
Set this value to match the native gamma of the input signal. Input gamma and output gamma both
default to 2.2. If they are both set to the same value, there is no effect on the image.

3.7. Geometry
This menu contains adjustments associated with setting up position, aspect ratio and scale of the input
signal. Scale can be as simple as an overscan up to arbitrarily warping the image.
3.7.1. Horizontal and Vertical Position
Settings: in steps of 1 pixel and line
Change the positional values to match the display boarders.
3.7.2. Aspect Ratio
Settings: Scale, Preserve
The system can be set to scale the input image to a fixed output resolution or, with the setting preserve,
to choose an output resolution matching the input resolution.
3.7.3. Warp
Submenu for warping the image. The warp applications are Keystone, 4-Corner and Rotation. Special
portrait warp applications for clockwise (90°) and counter-clockwise (270°) rotation with scaling are
provided as well.
Under the Keystone application the image can be adjusted to match a horizontally and vertically tilted
screen. Also, Pin and Barrel distortion of the lens or screen can be adjusted simultaneously.
Under the 4-Corner application all corners can be moved and the image is calculated to fit into the given
trapezoid.
The Rotation application let you rotate the image from -180 to 180 degree (one full circle). At the same
time Pin and Barrel distortion of the lens or screen can be adjusted again.
Predefined warp maps for portrait mode applications are provided. A 9:16 input image area is rotated
and scaled such that it fills a 16:9 screen.
For convenience all settings can be reset with one button provided in the submenus.
3.7.4. Picture Format
Settings: Standard, Full Screen, Crop, Anamorphic
Picture Format allows the user to select the displayed aspect ratio where the signal input is at variance
with the display panel’s natural aspect ratio. Note that some aspect ratios may not be applicable to all
signal types, in which case selecting a non-applicable aspect ratio conversion will have no effect on the
displayed image.
Standard preserves the aspect ratio of the incoming image and scales the image to fit into the size of
the panel. Non-used areas of the panel are displayed black (letterboxed).
Full Screen scales the image to the size of the panel without preservation of the aspect ratio.
Crop preserves the aspect ratio and scales the image to fit the screen. Either the top and bottom or right
and left areas of the image are cropped.
Anamorphic scales the input image so that it is displayed with a 16:9 aspect ratio. The image is further
scaled to fit into the size of the panel either bordered by the right and left side or bottom and top of the
panel. Non-used areas of the panel are displayed black (letterboxed).

3.7.5. Overscan
Settings: 0 to 10 in steps of 1
Overscan is used to slightly zoom into the image. Thus, the border area of an image is no longer
displayed on the screen. This cuts off unwanted features at the top or bottom from e.g. video images.
3.7.6. Pan Tilt Zoom
This menu provided settings to zoom and shrink the image, as well as panning within the image.
Pan Tilt Zoom (PTZ) can be switched ON or OFF. PTZ mode increases the latency of the system by
one frame. PTZ settings can be saved per signal mode or globally.
The Zoom slider allows to zoom into the image or shrink it. When Aspect Lock is set to ON the separate
slider for zooming vertically is greyed out and the horizontal zoom or shrink factor is used as vertical
factor as well. The aspect ratio is preserved. When Aspect Lock is Off horizontal and vertical scaling
factors can be chosen separately.
With the Pan and Tilt sliders panning within the image in horizontal and vertical direction is possible. Off
raster panning is allowed, the image can be shifted outside the active area of the display.
For convenience the PTZ settings can be reset with one button.

3.8. Enhancement
The enhancement menu provide image enhancement functions. Note that the enhancement settings
apply to video input signals only, not computer graphics signals.
3.8.1. Sharpness
Settings: -50 to 50 in steps of 1
Control of the sharpening enhancement filters' levels. These are peaking filters to improve high-
frequency response. Note that setting this control too high on a signal which already has good high
frequency response will cause ringing or ghosting.
3.8.2. Detail
Settings: 0, 1, 2, 3
This filter provides powerful 2D image enhancement which can be used to greatly improve detail
definition and clarity without causing image ringing or ghosting. It improves both horizontal and vertical
detail. Correct setting of the detail enhance filter can make SD signals look virtually indistinguishable
from true HD. At setting 0 the filter is switched OFF, with setting 3 providing the highest effect.
3.8.3. Video Filters
The video filters menu provides LTI and CTI filters and TRNR and MNR noise reduction filters.
The LTI filter enhances the sharpness of the luminance component. The CTI filter enhances the color
sharpness by increasing the steepness of color edges.
TRNR (Temporal Recursive Noise Reduction) and MNR (Mosquito Noise Reduction) are available for
SD input signals only. These filters reduce spatial and temporal noise as well as block artifacts.