Kramer Electronics VP-790 User Manual

KRAMER ELECTRONICS LTD.

USER GUIDE

MODEL:

VP-790

Blending Projected Images on a
Curved Screen

P/N: 2900-300214 Rev 1

Contents

1 Introduction 1
2 Setting the Basic System 2

2.1 Optical Alignment 3

3 Setting Blend Width 7
4 Warp Adjustment 10

4.1 Warp the Projection Image on to a Curved Screen 10

Figures

UFigure 1: Basic SetupU 2
UFigure 2: Image ProjectionU 3
UFigure 3: Input ScreenU 4
UFigure 4: Multiunit ScreenU 5
UFigure 5: Two Overlapping Images on a ScreenU 6
UFigure 6: Two Projected Images Displaying the Horizontal Bar Test PatternU 7
UFigure 7: Left Hand Blend Width Correctly AdjustedU 8
UFigure 8: Blend Width Correctly Adjusted on both ScalersU 9
UFigure 9: The Cross Hatch (F) Warp PatternU 10
UFigure 10: VP-790 Warp Generator Main WindowU 11
UFigure 11: Auto Connect WindowU 12
UFigure 12: Connect to Unit WindowU 12
UFigure 13: A New 2x2 GridU 12
UFigure 14: Setting a Grid Mesh of Nine PointsU 13
UFigure 15: Setting the WarpU 13
UFigure 16: Adjusting the LinearityU 14
UFigure 17: Complete Linear AdjustmentU 15
UFigure 18: Blend Curve Type – S-CurveU 15

VP-790 Blending Images – Introduction i

1 Introduction

Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been

providing a world of unique, creative, and affordable solutions to the vast range of

problems that confront the video, audio, presentation, and broadcasting

professional on a daily basis. In recent years, we have redesigned and upgraded

most of our line, making the best even better!

Our 1,000-plus different models now appear in 11 groups that are clearly defined by

function: GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Routers;

GROUP 3: Control Systems; GROUP 4: Format/Standards Converters; GROUP 5:

Range Extenders and Repeaters; GROUP 6: Specialty AV Products; GROUP 7:

Scan Converters and Scalers; GROUP 8: Cables and Connectors; GROUP 9:

Room Connectivity; GROUP 10: Accessories and Rack Adapters and GROUP 11:

Sierra Products.

This online guide describes how to blend two projected images accurately onto a

curved screen via the Kramer VP-790 Warp Generator application software.

VP-790 Blending Images – Introduction 1

i

2 Setting the Basic System

The basic system, illustrated in Figure 1, shows a video source distributed to two

VP-790 units and output to two identical projectors.

Figure 1: Basic Setup

One video source is distributed to both VP-790 units via a distribution
amplifier (for example, the Kramer VM-2Hxl).

Each VP-790 unit outputs the signal to a separate projector.

To successfully blend two or more projections:

• Each projector should be of the same manufacture and of the same model

• The projector lamps should be of the same age

• DLP color wheels should be designed for video

• The ‘dynamic gamma’ and ‘dynamic contrast’ applications should be set to off

2 VP-790 Blending Images - Setting the Basic System

2.1 4BOptical Alignment

UFigure 2U shows an example of the two 4:3 projectors being used to project a single

16:9 image.

Figure 2: Image Projection

Set the projectors so that the light from both projectors covers the whole screen

area.

Use the VP-790 built-in test patterns to adjust the position, zoom and focus of both

projectors.

VP-790 Blending Images – Setting the Basic System 3

2.1.1 Setting the VP-790 Functions

Set the VP-790 functions via the OSD menu as follows:

• Select Setup, Control Setup and then set the Menu Timeout to Infinite to turn

off the menu timeout

• Select Output, then select Resolution to set the output resolution to the native

resolution of your projector to enable the VP-790 to scale the image

Setting the output resolution to a resolution other than the native resolution would result
in the projector re-scaling the image!

• Select Output, then select Aspect Ratio to fit the aspect ratio to the display’s

natural aspect ratio

• Select Setup, Frame Lock and select Source

• Select Output, Frame Rate and select Auto

2.1.2 Setting Multiple Units Matrix

Set both VP-790 units as follows:

1. Select Input, Source and then Test Pattern.

Figure 3: Input Screen

4 VP-790 Blending Images - Setting the Basic System