7 Input A/V Switcher with Component Video, Digital Audio, Conversion, Automatic Input Mode and Volume Stabilizer Model VS-712EX User Manual Package Contents: 1 - VS-712EX A/V switcher unit 1 - Power Adapter, (120VAC input,15VDC output) 1 - IR remote control, with batteries 1 - This instruction manual 1 – SVS-Remote Control to RS-232C Adapter Options (Available separately) 19” Rack Mount Kit A/V Cables
Caution: IMPORTANT SAFEGUARDS FOR AUDIO PRODUCTS. PLEASE READ CAREFULLY THE FOLLOWING IMPORTANT SAFEGUARDS THAT ARE APPLICABLE TO YOUR EQUIPMENT 1. Read instructions - All the safety and operating instructions should be read before the appliance is operated. 2. Retain instructions - The safety and operating instructions should be retained for future reference. 3. Heed Warnings - All warnings on the appliance and in the operating instructions should be adhered to. 4.
Table of Contents PACKAGE CONTENTS:........................................................ 1 CAUTION:................................................................................ 2 INTRODUCTION .................................................................... 4 FRONT PANEL ....................................................................... 5 REAR PANEL .......................................................................... 6 IR REMOTE CONTROL, RM-18..........................................
Introduction Congratulations on purchasing Sima’s Model VS-712EX, 7 Input Audio / Video Switcher with Automatic Input Mode (AUTO SELECT) and Volume Stabilization. It has been designed for use with Home Theater, DSS Satellite, DVD, HDTV, Video Games, Audio Recording Equipment, as well as for background music applications. The VS-712EX has the following features: • High bandwidth, low noise audio / video switching for today’s high quality systems.
Front Panel Figure 1, VS-712EX front panel Controls 1 - IR Receive Window 2 - Power / Standby - Press to toggle the unit between modes. The red Standby indicator above the button will be lit when the unit is in Standby Mode. 3 - Record Inputs 1 through 7 - Press to select the desired input to send to the record output. The red Record Input indicator will light to show the currently selected input. th 4 - Input Jacks - a 7 set of input jacks.
Rear Panel Figure 2, VS-712EX rear panel 1 - Composite Video Inputs, 1 through 6 from the composite video output of your VCR, DSS or DVD devices. 2 - S-Video Inputs, 1 through 6 from the S-Video output of your VCR, DSS or DVD devices. 3 - Component Video Inputs 1 through 3 from the video output of your Cable Box, DSS or DVD devices. 4 - Left and Right Audio Inputs, 1 through 6 from the audio output of your VCR, DSS or DVD devices. 10 – DIP Switch setting to set the default operation of the unit.
IR Remote Control, RM-18 Fig. 3, RM-18 The RM-18 IR remote control allows you to control all of the functions available from the unit’s front panel, with the addition of a DIM setting. POWER – Toggles between Active and Standby mode. DIM - Pressing this button cycles through four levels of brightness on the front panel lights - bright, medium, dim or off. . VOLUME STABILIZER ACTIVE - Toggles between the Volume Stabilizer being Active or in the Bypass mode.
Typical Hook up Step 1 Connect the AC adapter to 120 VAC and plug the DC cord into the 15 VDC input on the rear of the VS712EX. Step 2 You will determine how you want to use your system. We have provided two sample hook-up diagrams to help you determine how to connect the components of your system. You can use the last page of this manual as an organizer for your equipment. Read the following notes before installing the VS712 into your system.
Fig. 5 - Basic Hook-up #1 Figure 5 below shows a hook-up with only two input sources. This diagram shows only inputs 1 and 2 being used. Be sure you use either S-Video or composite video inputs, but not both on the same input. The one VS-712EX output goes to the TV so you can watch and listen on your TV. The second output (audio only) goes to the stereo receiver so you can listen to music or surround sound audio using your stereo receiver.
Fig. 6 - Basic Hook-up #2 Figure 6 below shows a system with 3 input sources. It shows how you can watch video on your TV, listen on your surround sound receiver and record from the sources plugged into the VS-712EX. It also illustrates using the dual outputs to record on a VCR, watch the video on the TV and listen to the sound on a surround system.
Operation When AC power is first applied, all outputs will be muted and all the lights will come on for 1 second and then go out. The Power / Stand-by light will be lit dim red. The Auto Input and Volume Stabilization modes will be active as default. When the unit detects an active video input (composite, SVideo, or component video), the Power / Standby light will turn off full and the active input will be selected.
Note: If an input goes off and back on in less than 5 seconds, the VS-712EX may not sense the input change so no input change may occur. Volume Stabilizer Active (only on analog audio – no effect on digital audio) If the Volume Stabilizer Active light is on, then the output of the audio switcher will be routed through the Volume Stabilizer circuitry.
How it works This section has more technical information for the person who wants to learn more about the VS712EX. In the block diagram below you can see how the audio and video inputs are selected and fed to the output buffer amplifiers. (Only the left audio channel is shown) Notice how the Volume Stabilizer Active switch allows you to bypass the Volume Stabilizer circuitry.
Automatic Input Sensing When the AUTO SELECT mode is on, the VS-712EX constantly scans the video inputs, Composite, SVideo, and Component waiting for a video input. When you turn on a device (VCR, DSS, etc.) a microprocessor in the VS-712EX senses the video input, turns on the VS-712EX (when it is in the standby mode) and selects the input. If a second input occurs, the unit will switch to the new input. If the second input is turned off, in about 5 seconds, the unit will go back to the first input.
Composite to S-Video to Component Conversion The VS-712EX has special circuitry to convert the composite video inputs to the S-Video outputs and the composite/s-video signals to component video. The VS-712EX sends the original composite and the generated s-video signal to both sets of outputs and it takes the s-video signal and generates a component video signal. However, if you feed the selected input with a s-video signal, the VS-712EX only sends the svideo signal to the output.
Digital Audio Conversion The VS-712EX converts the coaxial and optical digital audio inputs and sends the signal out both the coaxial and optical outputs simultaneously. This lets you connect a single digital audio cable (either optical or coaxial) between the VS-712EX and your receiver and feed the VS-712EX with both coaxial and optical inputs. Note: It does not convert the digital signal to analog L+R signals or visa versa.
Advanced Information DIP Switch Setting The DIP switches on the rear panel of the VS-712EX lets you control the default operation of the unit. The default position of all the switches is in the OFF or up position. Address 8 7 RS-232 Address SVS-CONTROL This lets you set 4 different SVS-CONTROL addresses for the VS-712EX in systems that have multiple units connected on a RS-422/SVS-CONTROL network 00 01 02 03 Ignore Front 6 Ignore Front Setting this on disables the front panel buttons.
SVS-CONTROL Interface The SVS-CONTROL interface on the VS-712EX lets you connect the unit to a home automation system and control the various functions of the unit.
Message Acknowledgement The VS-712EX will ignore any message that does not begin with the @ character. When the VS-712EX receives an correctly initiated RS232 message, it will respond with an acknowledgement message, followed by a block of data, as appropriate.
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RS232 Status Response The returned data format (in response to a status request) takes the following format: Message header = $*2 as per section 7.3 above (* = RS232 address). Message data = VE?RE?CS?CL?SD?SL?SS?SA?SR?SP? (where ? represents a numeric value). Note that the mnemonics are the same as for the received RS232 commands.
IR Rear Panel Interface Valid IR Commands Function Set standby on / off (toggle) Set standby on* Set standby off* Set Auto Select mode on / off (toggle) Set Auto Select mode on* Set Auto Select mode off* Set LED brightness to next value (cyclic)* Set view / record outputs to channel 1 Set view / record outputs to channel 2 Set view / record outputs to channel 3 Set view / record outputs to channel 4 Set view / record outputs to channel 5 Set view / record outputs to channel 6 Set view / record outputs to ch
Trouble Shooting Problem Power/Stand-by light does not come on No video output No audio output No input is selected Picture is black and white AUTO SELECT does not detect device when turned on Unit goes to standby after 5 seconds Volume seems to vary too much between sources No front panel buttons work IR remote does not work A record channel can not be selected (LED blinks) Solution Make sure power adapter is plugged into a working outlet.
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Technical Specifications Design and specifications are subject to change without notice Audio Inputs, (7 stereo) Input impedance, 47 Kohms Typical input level, 300 mV Frequency response 20 to 20KHz, +/- 3db (bypass mode) Signal to Noise ratio, greater than 80 db THD less than 0.03% (bypass mode) Left to right separation, greater than 60 db Channel to channel separation, greater than 60 db Outputs, (2 view and 1 record) Output Impedance, less than 150 ohms Digital Audio Inputs Coaxial (4), 75ohm, 0.
Size: 17” wide, 12” deep, 4” high Weight: 12 lbs Page 26
Limited Warranty Limited Warranty Sima Products Corp. (“Company”) warrants that is the accompanying product proves to be defective to the original purchaser in material or workmanship within 90 days from the original retail purchase, the Company will, at the Company’s option, either repair or replace same without charge (but no cash refund will be made).
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Sima Products Corp. 140 Pennsylvania Ave., Bld. #5 Oakmont, PA 15139 USA 412-828-3700 800-345-7462 412-828-3775 FAX Visit us at www.simacorp.com E-mail us at custserv@simacorp.
System Organization Chart Fill in the chart below to help you organize and remember what devices are connected to the inputs and outputs. Save for future reference. Inputs From (VCR, DSS, etc.) Component Video Composit e Video S-Video L&R (analog) audio Digital audio Coaxial/Optical #1 #2 #3 #4 #5 #6 #7 Outputs To (TV, Receiver, etc.
