DDS 100 Digital Display Scaler 68-457-01 Printed in USA
Precautions Safety Instructions • English This symbol is intended to alert the user of important operating and maintenance (servicing) instructions in the literature provided with the equipment. This symbol is intended to alert the user of the presence of uninsulated dangerous voltage within the product's enclosure that may present a risk of electric shock. Warning Power sources • This equipment should be operated only from the power source indicated on the product.
Quick Start — DDS 100 Installation Step 1 Install the four rubber feet on the bottom of the DDS 100 digital display scaler (1A), or mount the scaler in a rack (1B). Step 2 Turn off power to the input and output devices, and remove the power cords from them. Step 3 Attach the scaler to the input device, and attach the output device to the scaler (3A). It does not matter which set of input connectors you use.
Quick Start — DDS 100, cont’d Using the LCD Screen The DDS 100’s LCD screen informs you of status changes, and it provides access to menus that allow you to adjust the image and its parameters. The screen normally cycles through two default screens continuously. The first displays the DDS model, and the second displays the video input horizontal and vertical scan frequencies.
Table of Contents Chapter 1 • Introduction .......................................................................................... 1-1 About This Manual ................................................................................................ 1-2 About the Scaler .................................................................................................... 1-2 Features .....................................................................................................................
Table of Contents, cont’d Chapter 6 • Troubleshooting .................................................................................. 6-1 Banding ...................................................................................................................... 6-3 Bending ...................................................................................................................... 6-4 Blooming ....................................................................................................
DDS 100 1 Chapter One Introduction About This Manual About the Scaler Features
Introduction Introduction, cont’d About This Manual This manual contains installation, configuration, and operating information for Extron’s DDS 100 digital display scaler. This chapter describes the scaler’s features. Chapter 2 describes how to install the scaler. Chapter 3 describes how to operate the scaler’s features. Chapter 4 describes RS-232 programming for the scaler. Chapter 5 describes the control software for Windows, which the scaler uses. Chapter 6 provides troubleshooting information.
• Input — Includes BNC inputs for RGsB (sync on green), RGBS (composite sync) and RGBHV. Also includes a second set of connectors for attaching a local monitor. • LCD menu display — Provides access to several menus that control the image display. • Memory presets — Uses 130 memory locations to store presets that include size, zoom, pan, centering, and filter control settings for various scan rates. The user can specify 30 of these presets, and the remainder were set at the factory.
Introduction, cont’d 1-4 DDS 100 Introduction
DDS 100 2 Chapter Two Installation Front and Rear Panels Setting Configuration Switches Installation Overview
Installation Installation, cont’d Front and Rear Panels Front panel features 6 7 9 CENTERING/PAN EXTRON DDS 100 DIGITAL SCALER MENU NEXT FREEZE/ RESET DDS 100 DIGITAL DISPLAY SCALER 1 2 3 4 5 8 Figure 2 — DDS 100 front panel 2-2 DDS 100 Installation 1 Power indicator LED — Lights to indicate that the scaler is receiving power. 2 Vertical centering/pan control — Allows you to pan or center the image vertically. See “Adjusting an image” on page 3-5 for more information.
Rear panel features 4 INPUT/ LOOP OUT R G B H/HV H V RS-232 HV 100-240 R 50/60 Hz 0.5A 1 2 3 G B H/HV SOG 5 V VGA OUT REMOTE 6 7 Figure 3 — DDS 100 rear panel 1 AC power connector — Standard AC power connector attaches the scaler to any power source from 100VAC to 240VAC, operating at 50 Hz or 60 Hz. 2 Input connectors — BNC female connectors for RGsB (sync on green), RGBS (composite sync), or RGBHV input.
Installation, cont’d Setting Configuration Switches The DDS 100 includes two toggle switches on the back panel. The two-position switch allows you to select 75Ω or Hi-Z termination. Ω , if no local Set the switch to the top position, labeled 75Ω monitor is attached to the scaler. Set the switch to the bottom position, labeled Hi-Z, if a local monitor is attached.
To rack mount the scaler, do the following: 1. Attach the mounting brackets (supplied with the scaler) on either side of the scaler, as shown in figure 4. Use four screws per mounting bracket. -232 RS TE MO RE H VG HV SO A OU T V G H/HV B G R V HV H/ B G R T/ PU T IN OU OP LO # 8 Screw (4 Plcs) Each Side 50/ 100 -24 60 Hz 0.5 A 0 Figure 4 — Installing mounting brackets 2. Using two screws per mounting bracket, attach the scaler to the rack as shown in figure 5.
Installation, cont’d 3. Place the rubber foot on one corner of the scaler as shown in figure 6, and press it into place. Position each rubber foot carefully before pressing it into place. It is difficult to move a foot after it is in place. RS RE H HV VG A OU -232 TE MO T V G SO H/ HV B G R V H/ HV B G R T/ PU T IN OU OP LO 50/ 100 -24 60 Hz 0.5 A 0 Rubber Feet (4 Plcs) Bottom Side Figure 6 — Installing the rubber feet 4.
1. Use BNC connectors to connect the input device to the input/loop out connectors. It does not matter whether you use the top or bottom row of connectors. RS-232 Control 2 -23 RS LCD Projector TE MO RE H HV or T A OU VG V G SO V H/H B G R V V H/H B G R / UT T INP OU OP LO 0 Hz 50/6 LCD Display 0.
Installation, cont’d 2-8 DDS 100 Installation
DDS 100 3 Chapter Three Operation Navigating the Default Cycle Screens Navigating the Menu Screens Preset Memory Serial Communication
Operation Operation, cont’d The front panel includes an LCD menu screen that displays the current status of the DDS 100 and the scan rate of the current video input signal. You can also use it to control the image display. Navigating the Default Cycle Screens The figure below shows the flow chart for the DDS 100’s LCD default cycle. Each rectangular box represents an LCD screen. Dashed lines indicate a screen that can be replaced temporarily by another screen.
12 The Freeze button was pressed. The image frozen/controls locked screen disappears, and the frozen image is released. 13 Entry into path E . The cursor Up and Down buttons were pressed together, or the executive mode RS-232 command was issued. 14 Executive mode enabled screen, which appears for four seconds and then loops back to the default cycle. 15 Executive mode disabled screen, which appears for four seconds and then loops back to the default cycle. E Path to the executive mode screens.
Operation, cont’d 01 3456789 Alternate Screens Enter or exit executive mode by pressing the cursor Up or Down buttons at the same time, or by sending an RS-232 command. The applicable executive mode screen appears for four seconds, and then the default cycle resumes. If the zoom adjustment exceeds the minimum or maximum limit, the applicable zoom screen appears. If an adjustment exceeds the minimum or maximum limit, the applicable screen appears.
• To reset the selection or adjustment from a menu screen on which F/R appears above the upper right corner of the flow chart box, press and release the Freeze/reset button while that screen is displayed. In the zoom, size, and centering/pan menus, pressing the Freeze/ reset button resets the adjustments for all three of those screens, as indicated by ZSC F/R in the flow chart. Adjusting an image The LCD menus and front panel controls allow you to make adjustments to the displayed image.
Operation, cont’d Configuration controls menu Output resolutions — Specifies the resolution used by the output device. Press the Up or Down cursor buttons to move through the resolutions. The available resolutions and their characteristics are shown in the table below. Scaled output resolutions 640x480 800x600 832x624 852x480 1024x768 VGA SVGA Mac Plasma XGA 480p HDTV 720p HDTV 848x480 1280x768 1360x765 Plasma Plasma Plasma Pixel clock (MHz) 25.18 40 57.3 33.28 65 TBD 74.25 33.75 76.15 85.
Preset Memory The DDS 100 preset memory contains 130 locations that store scan rates and associated size, zoom, pan, centering, and filter controls. The 30 user presets can be changed or erased. The remaining locations are factory-loaded, permanent presets that cannot be changed or erased. When a video input is connected, the scaler automatically scans the user presets and then, if necessary, the factory presets, looking for a match to the input scan rate.
Operation, cont’d The RS-232 connector on the DDS 100 is a 9-pin D female with the following pin assignments: Pin RS-232 1 2 3 4 5 6 7 8 9 — Tx Rx — Gnd — — — — Description Not used Transmit data Receive data Not used Signal ground Not used Not used Not used Not used The protocol is 9600 baud, 8-bit, 1 stop bit, no parity, and no flow control. You can control the DDS 100 directly in one of two ways: • From a host system connected to the RS-232 port. See chapter 4, “RS-232 Programmer’s Guide”.
DDS 100 4 Chapter Four RS-232 Programmer’s Guide Host to DDS Communications
RS-232 Programmer’s Guide RS-232 Programmer’s Guide, cont’d Host to DDS Communications The DDS 100 accepts SIS™ (Simple Instruction Set™) commands through the RS-232 port. SIS commands consist of one or more characters per command field. They do not require any special characters to begin or end the command character sequence. Each scaler response to an SIS command ends with a carriage return and a line feed (CR/LF = ), which signals the end of the response character string.
Command/response table Symbol definitions: = CR/LF, • = space = Horizontal filtering level, 1-4 = Vertical filtering level, 0-9 = Scaled output resolution = 3 = 640x480 4 = 800x600 5 = 832x624 6 = 852x480 7 = 1024x768 8 = 720p 9 = 848x480 10 = 1280x768 11 = 1360x765 = 1 = on, 0 = off = xxx.
RS-232 Programmer’s Guide, cont’d COMMAND ASCII RESPONSE Query software version DESCRIPTION q Q (Same as Q below) Verx.xx Example response: Ver1.
DDS 100 5 Chapter Five Control Software for Windows Installing the Software Using the Software
Control Software Windows Control Software for for Windows, cont’d The VSC and DDS Control Program (Extron part number (29-038-01), which is used by the DDS 100, is compatible with Windows 3.1, 3.11, 95/ 98, and above. It provides remote control of scaler settings. Installing the Software The program is contained on a single 3.5-inch diskette, and it can run from the floppy drive. However, it is usually more convenient to load and run the program from the hard drive.
3. Using normal Windows controls, you can perform the same adjustments as from the front panel. For information about program features, you can access the help program in any of the following ways: • From the Extron Electronics program folder or group, double-click on the VSC + DDS Help icon. VSC + DDS Help • From within the VSC and DDS Control Program, click on the Help menu on the main screen. • From within the VSC and DDS Control Program, press the F1 key.
Control Software for Windows, cont’d 5-4 DDS 100 Control Software for Windows
DDS 100 6 Chapter Six Troubleshooting Banding Bending Blooming Wrap Around
Troubleshooting Troubleshooting, cont’d This section gives examples and descriptions for some problems you might encounter in using the DDS 100. The “probable solutions” are listed for ease of implementation, as well as the order of probability. For example, it’s easier to flip a switch than it is to change cables, so you may want to try the switch first. It may be easier to check cables and other devices than to go through a lengthy convergence procedure, so you might check those components first.
Banding Description An overall decrease in intensity, with darker bars across the screen that begin in a light area, and bands of normal intensity that begin in a dark area. Because most of the image is darker, the normal bands appear brighter. Probable cause The image has shifted too far to one side, and has been driven into the blanking area, causing the display to clamp its black level to the video signal instead of to the back porch.
Troubleshooting, cont’d Bending Description The image hooks, bends, or tears toward the right side of the screen. This is noticeable on vertical lines near the top of the screen. Probable cause This problem is related to sync. The display device is not locking onto the video as it comes out of the vertical blanking. Possible solutions 1. Use the vertical shift control to lower the position of the image. See “Adjusting an image” on page 3-5. 2. Use separate horizontal and vertical sync output. 3.
Blooming Description The displayed image is bright and unfocused. Probable cause The brightness level of the display is at or beyond the maximum level. Possible solutions 1. Make sure that the input to the display device is terminated properly (75 ohms). 2. Make sure the input to the DDS 100 is terminated properly (75 ohms).
Troubleshooting, cont’d Wrap Around Description The left side of the image appears at the right side of the screen, and the right side of the image appears on the left side of the screen. Probable cause The sync timing and video information are locked, but are not in phase, or the display device may be locking in on the wrong edge of the sync. Possible solutions Adjust the horizontal shift on either the DDS 100 or the display device.
DDS 100 A Appendix A Specifications
Specifications Specifications, cont’d Video input Number/signal type ................... Connectors .................................... Maximum level ............................ Impedance .................................... Horizontal frequency .................. Vertical frequency ....................... Resolution range .......................... 2 RGBHV, RGBS, RGsB 2 x 5 BNC female (5 for input, 5 for passive local monitor output) Analog ....... 2.
Listings .......................................... Compliances ................................. MTBF ............................................. Warranty ....................................... UL, CUL CE, FCC Class A 30,000 hours 3 years parts and labor Specifications are subject to change without notice.
Specifications, cont’d A-4 DDS 100 Specifications
DDS 100 B Appendix B Reference Information Updates and Repairs Part Numbers Glossary
Reference Information Reference Information, cont’d Updates and Repairs You can perform the following updates and repairs to the DDS 100 in the field: • Installing a firmware update (see below). • Replacing the AC fuse (see page B-4) Before completing either of these procedures, follow the instructions in “Internal access”, below. Internal access Updates and fuse replacement require access to the internal areas of the DDS 100. To access the internal areas, do the following: 1.
1. Remove the cover of the DDS 100. See “Internal access” on he previous page. Make sure you are electrically grounded before touching IC chips. Electrostatic discharge (ESD) can damage IC chips, even if you cannot feel, see, or hear the discharge. 2. Locate the ICs to be replaced (see figure 13). The update kit will list the specific ICs. U69 V VH /H B U70 G R U41 Align Notches Figure 13 — Locating and replacing ICs 3. Remove the existing chip and set it aside.
Reference Information, cont’d 5. Reinstall the cover of the DDS 100. 6. If rack mount brackets were removed earlier, reinstall them. 7. Attach the power cord to the DDS 100 and to the AC power source. Make sure the DDS is working correctly. 8. If the DDS 100 is rack mounted, remove the power cable from the unit, and reattach the rack mount brackets. Reattach the unit to the rack, and reconnect the power cord and input and output cables.
8. If the DDS 100 is rack mounted, remove the power cable from the unit, and reattach the rack mount brackets. Reattach the unit to the rack, and reconnect the power cord and input and output cables. If you choose to check the power before putting the cover back on, make sure that tools and hands are outside the DDS 100, and then connect the power cord to the unit and to an AC source. The unit should power up normally. Unplug the AC power cord, and follow steps 5 – 8 above.
Reference Information, cont’d Assorted connectors BNC Connectors BNC Mini-HR crimp connectors, qty. 50 BNC SHR crimp connectors, qty. 50 BNC Bulkhead connectors, qty. 50 (for custom wall plates) 100-074-51 100-075-51 100-076-51 Pre-cut cables BNC-4 HR cable is used for RGBS cable runs, and BNC-5 is used for RGBHV cable runs. Either type can also be used for RGsB (sync on green). All Extron BNC cables have male gender connectors at both ends. A plenum version of the BNC-5 HR cable is also available.
Glossary BNC — Bayonet Neill-Concelman — A cable connector used extensively in television and named for its inventor. A cylindrical bayonet connector operates with a twist-locking motion. To make the connection, align the two curved grooves in the collar of the male connector with the two projections on the outside of the female collar, push, and twist. This allows the connector to lock into place without requiring tools. Digital display scaler — See scaler. Executive mode — Locks out all menu functions.
Reference Information, cont’d B-8 DDS 100 Reference Information
FCC Class A Notice Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
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