User’s Manual VTG 300/300R Video Test Generator with Audio www.extron.com Extron Electronics, USA Extron Electronics, Europe Extron Electronics, Asia Extron Electronics, Japan 1230 South Lewis Street Anaheim, CA 92805 USA 714.491.1500 Fax 714.491.1517 Beeldschermweg 6C 3821 AH Amersfoort The Netherlands +31.33.453.4040 Fax +31.33.453.4050 135 Joo Seng Road, #04-01 PM Industrial Building Singapore 368363 +65.6383.4400 Fax +65.6383.
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.
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Quick Start Guide — VTG 300/300R CAUTION Operation and service must be performed by authorized personnel only. These units must be operated in accordance with national and local electrical codes. Prior to using the VTG 300R for the first time, please be sure that the batteries are fully charged. To operate the VTG 300/300R, follow these steps and see chapter 2. Step 1 Connect a video device to one of the top panel connectors or connect an audio device to one of the bottom panel connectors.
Quick Start Guide — VTG 300/300R, cont’d Chapter 1 • Introduction .......................................................... 1-1 Step 4 If generating a video signal, press the Test Patterns button 8 to select a test pattern type, as indicated by the lit LED. See Selecting a Video Test Pattern in chapter 2. Press the Range button 9 to select from among the four video range types, as indicated by the lit LED. Power on EXTRON VTG 300 60-543-01 Use the Menu FW Ver. 1.00 button 5 to advance through VGA 31.
Table of Contents, cont’d Button Lock mode ................................................................ 2-15 Audio Testing Features ..................................................... 2-17 VTG 300/300R Video Test Generator Selecting audio signals ......................................................... 2-17 Setting the audio level ......................................................... 2-17 Setting the audio frequency ................................................
Introduction About the VTG 300/300R The Extron VTG 300/300R is a portable, hand-held video and audio test generator. The VTG 300R features an integrated battery pack and charger, otherwise both models offer the same functions and features. Both models are herein referred to as the “VTG” throughout this manual. Also, “VTG” and “video test generator” will be used interchangeably. The VTG will generate video signals for computer, standard resolution video, HDTV, and 16:9 high resolution output rates.
Operation Front Panel Features 1 2 3 LCD — A tworow liquid crystal display for viewing the VTG status, menus, and options. Audio signal type (Signal) — Press this button to select from among six different audio signals, as indicated by green LEDs to the right: pink noise (P. Noise), white noise (W. Noise), sine wave (Sine), square wave (Square), polarity test (Polarity), and swept sine wave (Sweep).
Operation, cont’d Left Side Panel LED (VTG 300R model only) 1 Left side panel Output 2: 3-pin XLR connector — Balanced mono audio is output from this male connector. 3 Output 3: 3.5 mm mini stereo phone jack — Unbalanced mono audio on both left and right channels is output from this female mini phone jack. See Connecting Audio Outputs in this chapter for audio wiring instructions.
Operation, cont’d Output 2 Default menu 1 2 Balanced mono audio is output from this connector. Wire the female XLR connector as shown here. 3 The default menus appear on the LCD when no adjustments are actively being made. They cycle between the screens showing the currently selected horizontal scan frequency of the video output signal, the audio output level, and the audio frequency, as shown below.
Operation, cont’d Grayscale submenu Main menus Select the grayscale test pattern from among two types. The main menus are as shown in the following flowchart. Use the Menu button to step between main menus. Power on Press any patterns: EXTRON VTG 300 or button to select from the different test • 32-level split bars (default) — to set grayscale tracking and evaluate contrast linearity. 60-543-01 FW Ver. 1.00 • Ramp — to evaluate pixel bit depth capability. VGA 31.5kHz 640x480 @60 3 sec.
Operation, cont’d Output 3 submenu RGB Sync format submenu (RGB Sync Fmt) Output 3 may be set to output audio through the left and/or right channel(s). The VTG offers a choice of four RGB sync formats. Press any or button to select from among the formats: Press any or button to select the audio output from Output 3’s phono jack: • RGBHV (default) • RGBS • Left and right channel (default) — output audio from both left and right channels of Output 3.
Operation, cont’d Press any or timer options: button to select from among the power off blacked out screen, and the Cycle mode will display all six categories of test patterns at four-second intervals. Although the output screen will be blacked out when the Blank screen saver mode has been selected, the output sync will still remain active.
Operation, cont’d still set on) after 2 seconds of button inactivity, but will light again when any button is pressed. When the VTG is powered by both the external power supply and batteries, the external power supply provides the power, not the batteries. Unit Reset submenu (Press & Hold) The VTG can be reset to factory default values. Any of the adjacent and button pairs (Level, Frequency, or Rate) will activate the reset.
Operation, cont’d Audio Testing Features Power on The VTG can output from among six different audio signal formats. The audio level can also be selected from a range of levels available for each audio format. EXTRON VTG 300 60-543-01 FW Ver. 1.00 VGA 31.5kHz 640x480 @60 Depending on the audio signal format, the audio frequency may be selected from a range of values. 3 sec. AUDIO LEVEL -10dBu 245mV 3 sec. AUDIO FREQ.
Operation, cont’d Displayed levels are for high impedance loads. For 600-ohm loads, there is a -.7 dB (unbalanced) / -1.3 dB (balanced) difference between the displayed and actual levels. Setting the audio frequency The audio frequency for each audio signal type is selected from a range of values using the or Frequency buttons and observing the LCD. The following table lists the available frequencies.
Operation, cont’d Selecting a video test pattern 80% Window Crosshatch - 32 x 24 Static and Dynamic Convergence This pattern can be used to set projector focus and geometry. For CRT projectors, this pattern is for examining and adjusting both static and dynamic convergence, so that the red, green, and blue video signals are aligned throughout the image. This pattern is also useful for evaluating some optical qualities of projector lenses, such as chromatic aberration.
Operation, cont’d Selecting a signal range Press the Range button to select from either a computer output rate (PC), video output rate (NTSC, PAL, etc.), HDTV output rate, or 16:9 HR output rate. Setting the scan rate The scan rate for a signal range is selected from a list of rates using the or Rate buttons and observing the LCD. The scan rate options are as follows: Output type PC ............. ............. ............. ............. ............. ............. ............. ............. ............
Operation, cont’d Prior to using the VTG 300R for the first time, please be sure that the batteries are fully charged. The VTG 300R batteries are not covered under Extron’s three year warranty. A fully discharged VTG 300R may take up to eight hours to reach the fully charged state.
Operation, cont’d VTG 300/300R Video Test Generator A Appendix Specifications and Part Numbers Specifications Included Parts 2-26 VTG 300/300R • Operation
Specifications and Part Numbers Specifications Video signal characteristics Dot clock ....................................... Pixel clock accuracy ..................... Horizontal frequency .................. Vertical frequency ....................... Rise/fall time Composite and S-video .. All other signal types ...... 108 MHz (max.) 100 ppm 15 kHz to 127 kHz 30 Hz to 85 Hz 140 ns <4 ns Video output Number/signal type ...................
Specifications and Part Numbers, cont’d External power supply ................ 100 VAC to 240 VAC, 50/60 Hz, external, autoswitchable; to 12 VDC, 1 A, regulated Power input requirements ......... 12 VDC, 1 A Batteries (VTG 300) Number/type .................. 4 AA batteries (1.5 V alkaline or 1.2 V rechargeable) Operating time (h:mm) ... Alkaline batteries: 1:10 to 2:45, continuous use Rechargeable NiMH batteries: 1:20 to 3:10, continuous use Batteries (VTG 300R) Number/type ..................