SVS 100 Seamless Video Switcher 68-496-01 Printed in the 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. Caution Read Instructions • Read and understand all safety and operating instructions before using the equipment.
Quick Start — SVS 100 Installation Drill pilot holes — 3/32” (2.4mm) diam. 1/4” (6.3 mm) deep two mounting screws on each side Step 1 rack-mount bracket Turn off power to the SVS 100 and all other devices that will be connected. Step 2 K OC NL GE T OU or If the SVS 100 is to be rack or table/wall mounted, position the brackets and insert the mounting screws, as shown on the right.
Quick Start — SVS 100, cont’d Front Panel Operation Cut Fade from Black Fade to Black Dissolve The SVS 100 displays an assortment of menus on its LCD screen. By rotating the encoder knob, the Effects, Genlock, Picture Controls, and Audio operations can be adjusted. Input Press an input button to select a video input source. Effects Pressing the effect button and rotating the encoder knob will select from among several video switching effects. See figure 1, figure 2, and Table A.
Table of Contents Chapter 1 • Introduction ................................................................................. 1-1 About the SVS 100 ............................................................................................... 1-2 SVS 100 Features .................................................................................................. 1-3 Chapter 2 • Installation ..........................................................................................................
Table of Contents, cont’d Chapter 5 • Serial Communication ................................................................................. 5-1 Remote Control Port (RS-232/RS-422) ....................................................................... 5-2 Host-to-SVS 100 Communication ................................................................................ 5-2 SVS 100-initiated messages ...............................................................................................
Seamless Video Switcher 1 Chapter One Introduction About the SVS 100 SVS 100 Features
Introduction About the SVS 100 Extron’s SVS 100 Seamless Video Switcher is a four-input, one output switcher that provides low-cost seamless switching for applications such as video conferencing, distance learning, staging and video editing, without the need for expensive genlock equipment. The switcher inputs can be NTSC or PAL. The SVS 100 seamlessly switches among the inputs using digital switching effects, such as cuts, wipes, dissolves, and fades.
SVS 100 Features Four NTSC or PAL video inputs — • 2 S-video or composite video inputs — 2 rear panel, 4-pin mini-DIN connectors (Input 1 and Input 2) accept luminance (Y) and chrominance (C) input. Alternately, 2 rear panel BNC connectors accept composite video input. The video inputs can be specified through a menu system, as either Auto, Video, or S-video. Auto will automatically select the active input.
Introduction, cont’d 1-4 SVS 100 Introduction
Seamless Video Switcher 2 Chapter Two Installation Mounting the SVS 100 Cabling and Rear Panel Views Genlock and Vertical Interval Switching SVS 100 Introduction
Installation Mounting the SVS 100 The SVS 100 Seamless Video Switcher comes with two sets of mounting brackets. One set is for mounting the switcher under a table or against a wall, and the other set is for rack mounting. Table or wall mounting The table/wall mounting brackets extend approximately 1/4” (6.3 mm) above the top surface of the SVS 100 enclosure. This design allows for an air space between the enclosure and the surface on which it is mounted. Table or wall mount the switcher as follows: 1.
Rack mounting Rack mount the switcher as follows: 1. Attach the rack mount brackets to the switcher with eight #8 machine screws, provided (see figure 2-1). 2. Insert the switcher into the rack, align the holes in the mounting bracket with those of the rack. 3. Secure the switcher to the rack using the supplied machine screws. Cabling and Rear Panel Views All connectors are on the rear panel (see figures 2-2, 2-3, and 2-6).
Installation, cont’d 6 GENLOCK A L B 1 R INPUTS 2 R L 3 R L L 4 R OUTPUT L 1 R OUT C REMOTE OUTPUT 7 6 IN RS-232/422 8 8 8 8 9 Figure 2-3 — Switched video outputs, and audio inputs and outputs 6 Output A and Output B, composite video outputs — Connect composite video display, recording, or transmission devices to these BNC connectors. The outputs of the two connectors are identical to each other and to the decoded S-video output 7 .
Connect the sleeve to ground (Gnd). Connecting the sleeve to a negative (-) terminal will damage the audio output circuits. By default, the audio output follows the video switch. Audio breakaway, commanded via the Windows-based control program or under RS-232/RS-422 control, allows the user to select from any one of the four audio input sources. See to chapter 5, Serial Communication, for details.
Installation, cont’d If the genlock connectors are used only for vertical interval switching, no horizontal or subcarrier phase adjustments are required, and the Burst Lock LED on the front panel does not light (see Genlock controls and indicators in chapter 3).
rotating the encoder knob (see Encoder knob in the next chapter). Adjust the horizontal phase until there is no (0°) difference between the composite video output’s horizontal sync phase and the genlock signal’s horizontal phase. See the Oscilloscope displays section. 7. Set the scope to view the subcarrier signals.
Installation, cont’d With this method there is no way to know if the signals are 180º out of phase. A delayed sweep on a time-based scope would allow a more accurate display of the input and output signal phase relationships. A vectorscope is more accurate than a waveform monitor. Figure 2-8 shows an example of a vectorscope display when the horizontal phase is adjusted to align it with the burst (genlock) vector.
Seamless Video Switcher 3 Chapter Three Operation Front Panel Controls and Indicators Optimizing the Video and Audio Inputs MVP 104 Installation
Operation Front Panel Controls and Indicators The front panel (see figure 3-1 and figure 3-2) features all of the direct access controls and indicators, including video input selection, switching effects, picture controls, genlock controls, top and bottom blanking, audio level, an encoder knob for making adjustments, and an LCD display. The front panel controls (but not the Input buttons) may also be disabled through the Executive mode command (see the Executive Mode section in this chapter).
CUT Effects controls and indicators 3 4 5 DISSOLVE Effect button and LED — This button enables the Effect menu which is displayed on the LCD. With the menu enabled, the Effect LED is lit. Rotate the encoder knob to scroll through the various switching effects menus. See Table A. Effects include cut, dissolve, soft wipe, hard wipe, soft curtains, hard curtains, square, diamond, circle, X effect, and + effect. See figure 3-3.
Operation, cont’d LEFT TO RIGHT HORIZ IN IN 0.2 SECONDS RIGHT TO LEFT HORIZ OUT OUT 0.3 SECONDS TOP TO BOTTOM VERTICAL IN BOTTOM TO TOP VERTICAL OUT TOP RT 2 BTM LT DIAG RT IN 0.6 SECONDS TOP LT 2 BTM RT DIAG RT OUT 0.7 SECONDS BTM RT 2 TOP LT DIAG LT IN BTM LT 2 TOP RT DIAG LT OUT Table B –– Transition Menus Table D –– Transition Menus 0.4 SECONDS 0.5 SECONDS 4.8 SECONDS Table C –– Transition Menus 4.
Genlock controls and indicators A genlock (black burst generator) device can be connected to the SVS 100 to synchronize it with other system components for seamless vertical interval switching between sources. See Genlock and Vertical Interval Switching in the previous chapter. 6 7 8 Burst lock LED — This LED indicates that the SVS 100 switcher is genlocked to the external black burst sync signal. Horizontal Phase button and LED — This button enables the horizontal phase adjustment.
Operation, cont’d by rotating the encoder knob while observing the output and the LCD setting. The brightness can be increased or decreased from 0 to 50 (default is 23). 12 13 Contrast button and LED — This button enables the adjustment for the contrast, or range of light and dark values, in a video image. When the button is pressed, the Contrast LED lights and the contrast adjustment screen is displayed on the LCD.
Executive Mode The Executive mode allows all front panel controls to be disabled, except for the Input buttons. Pressing the Top and Bottom Blanking buttons simultaneously for two seconds will enable the Executive mode. While in the Executive mode, the RS-232/RS-422 port is still active and commands can still be issued to the SVS 100 using the Simple Instruction Set (see chapter 5, Serial Communication).
Operation, cont’d Input video type After selecting Demo mode (as previously described), the desired video input type for Input 1 may be selected by pressing the Audio button and rotating the encoder knob to select either auto, video, or S-video. Auto will automatically select the active input or, if both video and Svideo are active, S-video is selected. Press the Audio button again to select the input type for Input 2. If no button is pressed within 8 seconds, the SVS 100 exits the Advanced menus.
Chroma setting After selecting an input’s VCR mode (as previously described), the chroma setting for an input may be selected by pressing the Audio button. Setting the chroma for an input will toggle the color On (Y) or Off (N). Press the input button(s) to set the chroma.
Operation, cont’d 3-10 SVS 100 Operation
Seamless Video Switcher 4 Chapter Four Windows®-based Control Program Installing Windows-based Control Software Using the Software MVP 104 Operation
Windows®-based Control Program The MVP and SVS Control Program (Extron part number 29-047-01), which is used by the SVS 100, requires Windows 95/98, NT, or later. It provides remote control of SVS 100 functions. Installing the Windows-based Control Software The program is contained on two 3.5-inch diskettes. The program occupies approximately 1.5 MB (megabyte) of hard-drive space. Run the program from the hard drive. To install the software from the floppy disks onto the hard drive, run SETUP.
3. Using normal Windows controls, you can perform many of the same adjustments as from the SVS 100 front panel. For information about program features, you can access the help program in any of the following ways: • From the Extron Electronics group folder, double-click on the MVP+SVS Help icon. • From within the MVP and SVS Control Program, click on the Help menu on the main screen. • From within the MVP and SVS Control Program, press the F1 key for context-sensitive Help.
Windows®-based Control Program, cont’d 4-4 SVS 100 Windows®-based Control Program
Seamless Video Switcher 5 Chapter Five Serial Communication Remote Control Port (RS-232/RS-422) Host-to-SVS 100 Communications MVP 104 Windows Control Program
Serial Communication Remote Control Port (RS-232/RS-422) The SVS 100 RS-232/RS-422 port connector is used to connect to a host or external controlling device, such as a computer or control system which can generate the proper command codes and recognize the SVS 100 responses. 5 1 RS-232/RS-422 9 6 DB9 Pin Locations Female REMOTE The SVS 100 comes from the factory already configured for RS-232. To set the SVS 100 for RS-422 operation, please see “Configuring the SVS 100 for RS-422” in the Appendix.
Using the command/response table The command/response table is shown on the following pages. Lower case characters are acceptable in the command field only where indicated. Symbols are used throughout the table to represent variables in the command/response fields. Symbol definitions are shown below, and an ASCII-to-hexadecimal (HEX) conversion table is shown in figure 5-1. Command and response examples are shown throughout the command/ response table.
Serial Communication, cont’d ASCII to HEX Conversion Table • Figure 5-1 — ASCII-to-hexadecimal conversion table COMMAND/RESPONSE TABLE COMMAND Input Selection ASCII Select video and audio* Select audio only* Select video only* ! $ & RESPONSE C A V DESCRIPTION Video and audio input Audio input (0 = mute audio) Video input (0 = black video) * The response is immediately preceded by “Bsy1”, which indicates that an effect has begun, and followed by “Bsy0” when the effect has ended.
COMMAND Tint Specific value Increment up Decrement down View ASCII RESPONSE DESCRIPTION T Tin Tin Tin Tin Sets input tint to Increment input tint by one step Decrement input tint by one step View current input’s tint setting K/k Asw Set the audio switch mode to G In •Aud= Set audio gain for current input to In •Aud= Set audio attenuation for current input to In •Aud= Display audio gain for current input +T -T T Audio Switch Mode Audio switch mode Audio Channel Gain Audio gain Audio Ch
Serial Communication, cont’d COMMAND ASCII Request Information General General RESPONSE I i T h Exe h h •Asw DESCRIPTION h •V •A •Dur Xk •Eff Xe * Xt •TpO i TpA j •TpB j Example responses to commands 1. Response to Request general information (I) command: T2222•V1•A2•Dur9•Eff02*01 Video type detected (T) = 2222 (PAL on all four inputs) Video input selected (V) = 1 (video input 1) Audio input selected (A) = 2 (audio input 2) Duration of transition (Dur) = 9 (4.
Seamless Video Switcher A Appendix Reference Information Special Applications Configuring the SVS 100 for RS-422 Specifications MVP 104 Programmer’s Guide
Reference Information Special Applications Saving and Recalling Input Configuration Presets The SVS 100 is capable of storing up to 128 input configurations which can be recalled just prior to switching from one input to another. This save/recall capability is only available through RS-232/RS-422 commands and not via the front panel controls of the SVS 100.
32*30! In this example, input #32 is being switched to output #30 (with audio following video) 3. The last SIS command to the SVS 100 will select an input: 1! In this example, Input #1 is selected as the current input (with audio following video). Configuring the SVS 100 for RS-422 The SVS 100 comes configured from the factory for RS-232 communications. If an RS-422 configuration is required, follow the procedures below.
Reference Information, cont’d Relocating the ribbon cable and setting the jumper If the SVS 100 is currently configured for RS-232 communication, the ribbon cable must be relocated and the jumper must be reset for RS-422 communication. See figure A-3. 1. Disconnect the ribbon cable from the RS-232 receptacle, noting that the red stripe of the cable is positioned relative to pin #1 of the receptacle.
3. Attach the power cord to the SVS 100 and plug the cord into an AC power source. Check that the SVS 100 is operating properly. 4. If the SVS 100 is to be rack mounted, disconnect the power cord and install the SVS 100 in a rack, then reattach the power cord.
Specifications — SVS 100 Video input and loopout Number/signal type ................... 8 composite video, 4 S-video Connectors .................................... 8 BNC female .......................... composite video 4 4-pin mini-DIN female ...... S-video Nominal level .............................. 0.7V to 1.0V p-p Maximum level ............................ 2.0V p-p Impedance .................................... 75 ohms Termination .................................. Hi Z Vertical frequency ...........
Program control .......................... Extron’s control program for Windows® Extron’s Simple Instruction Set™ – SIS™ General Power ............................................ 100VAC to 240VAC, 50/60 Hz, 40 Watts, internal Temperature/humidity ............. Storage -40° to +158°F (-40° to +70°C) / 10% to 90%, non-condensing Operating +32° to +122°F (0° to +50°C) / 10% to 90%, non-condensing Rack mount .................................. Yes Enclosure type .............................
A-8 SVS 100 Appendix
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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