User`s Manual - Hall Research
Contents
1. The device will respond with In 2 Selected If the previously displayed output was input 1 similar to above a 25 ms blanking period is automatically inserted Ascii a or Hex61 Enters Auto Mode The device will respond with Auto Mode In auto mode the device automatically switches to the video input source that is active Active means that video signal has sync signal it does not mean that there is a non static screen If both inputs are active then the VS 2X2 stays on the currently selected video until the video signal ceases then it will switch to the other channel if there is good video present there Ascii b or Hex62 Blanks the output The device will respond with Blanked output When output is blanked only the color intensities of the output are reduced to zero the box still operates in normal fashion and sync signals are still routed to the output Page 4 of 6 Ascii u or Hex75 Un blanks the output The device will respond with Unblanked output Specifications Equipment included e UL approved 110 Vac adapter 12 Vdc 300 ma output on 2 5mm center positive coaxial plug e 220 Vac adapters with CE approval are also available please specify at the time of order NOTICE DO NOT CONNECT ANY OTHER POWER SUPPLY TO THE UNIT THE DEVICE RELIES ON A FLOATING NOT REFERENCED TO GROUND SUPPLY VOLTAGE SOURCE e 6 ft Serial Control Cable e 6 ft Push button Switch Cable e This User s Manual Dimensi2. We ERE r IV Echo typed characters locally e Connect Direct to Com1 or Com2 DH C Del C coh Sacco Deso a e Configure for 1200 Baud 8 bits No Parity o 1 Stop bit No flow control Tebetemin ANSI ASCII Receiving 4 a Backa betes J500 a I Append line feeds to incoming line ends e Settings per following figures F Beng te tie when comecing ccc ay TERR IV Wrap lines that exceed terminal width Page 3 of 6 When you turn the unit on the following menu appears Version x x Copyright 200x 1 Input 2 Input Auto mode Blank Un blank Control Codes 1 byte commands from external control device Ascii 1 or Hex31 Selects input 1 immediately and unconditionally The device will respond with In 1 Selected If the previously displayed output was input 2 then prior to switching the unit will blank the output for a period of approximately 25 milliseconds switch to input 1 and un blank the output This is done in order to reduce or eliminate the undesired flash of junk on screen when the monitor is re synchronizing from one input to the other Most monitors and Lcd s do take some additional time to re sync to the new input and so the blanking may appear to be longer than 25 ms The reason for the initial blanking during the switching is to prevent a jittery screen that may appear for a fraction of a second due to initial switching Ascii 2 or Hex32 Selects input 2 immediately and unconditionally
3. J 4 Hall Research Technologies Inc 1163 Warner Ave gJ I Phone ae ere Fax 714 641 6698 User s Manual Model VS 2X2 Compact Electronic VGA Switch 2 input amp 2 outputs with Push button Switch Cord and Serial Control Port LAALASD WAG HLM HDMS YSA ZXZ SA Vaw SSIDOTIONHOSL HOUVASAY WH LIF September 27 2005 UMA1082 Rev 1 Description The Model VS 2X2 is a versatile compact high performance solid state 2 input x 2 output VGA video switch that can operate at resolutions of up to 1600x1200 The unit can be thought of as a 2 input x 1 output video switch followed by a 1 input x 2 output video splitter built in one convenient box It allows two monitors to be switched between two video sources The unit is housed in a small RFI shielded enclosure and is supplied with an AC power adapter a push button remote switch control cable and a Serial RS 232 control cable for connecting to a PC or other serial control device The device terminates both video input signals and buffers the output in order to protect signal integrity The Model VS 2X2 can drive video cables to 150 feet or more depending on cable quality and resolution setting The input and output connectors are all HD15 Female standard VGA style Features e Allows two monitors to be switched between two video sources e Can be controlled manually via Serial port or from TTL level or contact closure e Select input 1 input 2 or
4. S 2X2 does not switch the PNP signal lines to the PC This means that in some instances you may have to select a new monitor or video settings on your PC Also notice that most Notebook PC s have a special function key to activate the external video output connector Page 7 of 6 E E E E E E E D E E E E E E E E E E E E Connection Diagram OR RS 232 Device OR Automatic Dip Switch Settings The Model VS 2X2 provides a convenient dip switch for setting the desired mode of operation It is recommended to set the jumper prior to applying power to the unit however the device does monitor the dip switch settings when on and changes mode of operation as needed LILI Normal This is the default mode setting for the switch In this mode the unit is controlled from the push button switch cord The switch at the end of the cable is momentary and it has a built in LED The LED is used to indicate which input is selected Solid on means Input 1 blinking means Input 2 when blanking mode is enabled LED off means blanked output Every time you press the button the output switches from the current input to the other input When blank mode is on double clicking the button will blank the output screen Bae EILL Auto If selected causes the switch to select the input with active video automatically The presence of video is determined by examining the V Sync signal of the input connectors In Auto mode you don t
5. ailure as detailed as possible Shipping address and contact name and phone number Limited Liability IN NO EVENT SHALL THE DIRECT VENDOR S LIABLITY EXCEED THE PRICE PAID FOR THE PRODUCT FROM DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THE PRODUCT OR ITS DOCUMENTATION Page 6 of 6 SAA Hall Research Technologies Inc Products Designed and Made in the USA Copyright 2006 Hall Research Technologies Inc All rights reserved 1163 Warner Ave Tustin CA 92780 Ph 714 641 6607 Fax 714 641 6698
6. blank the output e Auto mode automatically scans and selects the input with active video Inputs can also be prioritized e Infinite switching cycle life e Can drive long cables e Terminates both video input signals and buffers the output to protect signal integrity e Includes push button and serial cables for control Setup Your package should include two control cables a power adapter and the Video Switch unit itself Please take inventory of all items received and ensure that you have the above items Connect INPUT 1 and INPUT 2 of the switch to your video sources such as computer or notebook PC You will require a cable for each connection It is highly recommended that you use multi coaxial high resolution VGA cables for this purpose The cables would generally be male to male Hall Research can provide cables from 3 feet to 100 feet or more please contact us for pricing information Connect the display devices such as a monitor or a video projector to the outputs of the Switch You can connect one or two monitors to the unit Both will show the selected input Set the dip switches according to the mode of operation that best suits your application Connect the supplied AC power adapter to the Splitter and plug in the push button switch cord Plug and Play DDC Direct Data Channel is a standard by which a compatible monitor sends its identification and other parameters to a PnP operating system such as Windows 98 etc The V
7. need to have the pushbutton cord plugged in However if a push button cord is plugged in the button itself cannot be used for switching but the LED either stays on or blinks to indicate which input is selected Additionally it is possible to blank the output in auto mode using the push button switch see Blank dip switch function below Page 2 of 6 Auto Mode with Priority There are two modes of operation for the Auto detection of video In the default mode with dip switches as shown above TTL switch in off position no priority is assigned to either input Once the switch finds a video at one of the inputs it selects it and stops scanning until the currently selected input s video is absent then the switch will start scanning again If the TTL dip switch is down on at the same time as Auto then priority is given to input 1 This means that at any time video is present at input 1 the VS 2 will automatically select it regardless of what is happening at input 2 For example if the Switch is showing an image from input 2 and you plug in a video signal to input 1 the switch will select 1 right away Blank If enabled then double clicking the push button will cause the output to go blank If dip switch is off then the double click feature is not there and if the user presses the button in quick succession all that the switch will do is to switch between the inputs quickly ag LIL IE E LI TTL In this mode the selecti
8. on of input is determined by an external contact closure or TTL signal The customer should provide his or her own cable The signal is to be asserted between the tip and ground of the 3 5mm mini plug A high or open input selects input 1 and a low or short to ground will select input 2 The center ring of the connector can be used to light an external LED for indication of the selected channel if desired Simply tie the ring to the anode of an Led with the cathode tied to ground EEH LIL IL E RS 232 This position is to allow the switch to be controlled via a Serial device The same CTRL connector is used to attach the device to the serial port via a supplied cable The unit operates at 1200 baud adequate since only single ASCII characters are used to command the switching and the lower baud rate eliminates cable length shielding and noise issues From the serial port you have full control over the operation of the switch e g select input 1 input 2 blank the output un blank the output or place the switch in and out of auto mode More on Serial RS 232 operation Approximately one second after power up the VS 2X2 will output a menu on the serial port To view the menu you need a ASCII serial terminal or terminal emulator software An example is Windows Hyper terminal generally found in Accessories Communication folder a AE 3 i Connect To Settings ASCII Sending To Configure Hyper terminal Se el r gana inden
9. ons LxWxH 414 x 234 x114 Video Specs Bandwidth 250 MHz Input impedance Video 75 ohms on RGB 330 ohms on H V Coupling DC Signal Level Video 0 to 0 7 v p p Sync TTL Page 5 of 6 Federal Communications Commission FCC Statement This equipment generates uses and radiates radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications This equipment has been designed to comply with the limits for a Class A computing device pursuant to Part 15 of the FCC rules Harmful interference when operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measures are necessary to correct the interference Warranty HRT warrants that the supplied equipment is free from defective workmanship and material Subject to the agreements set forth will repair or replace at its option the defective components for a period of 2 years after purchase The following conditions apply to the Warranty Warranty void if item subject to improper use negligence or unauthorized modification e Instructions must be followed in obtaining RMA number as explained below e Any defective part should be returned nsured and freight prepaid to Hall Research with the following Return Material Authorization Number RMA Description of f
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