The Extron VTG 400 and VTG 400D are advanced, programmable, and upgradeable Video and Audio Test Generators that deliver accurate, full bandwidth video signal reproduction and high performance audio test signals. These test generators are professional quality reference tools for set-up, performance evaluation, calibration, and troubleshooting audio and video systems. The VTG 400 offers a comprehensive array of video test patterns, as well as a suite of audio reference signals. Video is output simultaneously as RGB, component video, S-video, and composite video, while stereo audio output is both balanced and unbalanced. SDI/HDSDI output is included with the VTG 400D. The VTG 400 is designed for universal video display compatibility. A total of 97 output scan rates are available for high resolution computer-video, as well as HDTV, NTSC, and PAL. Up to 180 additional rates can be programmed into the VTG 400. The audio test generator is fully compatible with professional and consumer audio equipment, and delivers low-level accuracy for microphone inputs. Operation of the VTG 400 is intuitive and convenient, with an easy-to-read LCD screen on the main panel, direct access buttons, and memory presets for quick saving and recall of user settings. Programming and upgrading the VTG 400 is available through RS-232 and proprietary control software, including new test patterns and custom scan rates. A powerful and innovative feature is Scope-Trigger™ output (Patent Pending), which enables analysis of a selected area within the video image using an oscilloscope. Scope-Trigger eliminates the aggravation and inconvenience of setting up an oscilloscope for video signals through a specially generated trigger signal, precisely timed to a user-defined target location on the image. Housed in a rugged, lightweight metal enclosure, the VTG 400 is ideal for both field and permanent A/V applications.

• 97 output scan rates — Provides 97 factory scan rates for high resolution computer-video, HDTV, 16:9, plasma, and RGB, as well as standard definition component video, S-video, and composite video. Also accommodates up to 180 additional user-defined scan rates.
• 34 video test patterns — Includes multiple crosshatch patterns, color bars, PLUGE, crop patterns, geometry, grayscale, and alternating pixel patterns, as well as flat field, window, checkerboard, hum bar, and Contrast Transfer Function (CTF) patterns with adjustable levels.
• Seven audio test signals — Includes sine waves, square waves, pink noise, white noise, polarity, frequency sweeps, and sine wave bursts with selectable frequencies and output levels.
• Scope-Trigger™ output — An innovative feature which enables analysis of a specific area within the test pattern image using an oscilloscope. This feature is especially helpful in identifying signal and display imperfections (Patent Pending).
• Quick Select memory presets — User settings including output scan rates and test signal selections can be saved to and recalled from four memory presets via direct access buttons.
• Broadcast quality encoder — Ensures compliance with SMPTE and NTSC/PAL standards for accurate video performance.
• Video outputs — RGB on BNC and 15-pin HD connectors, component video and composite video on BNC connectors, and S-video on a 4-pin mini DIN connector. SDI/HDSDI output is available with the VTG 400D.
• Audio outputs — Balanced or unbalanced audio on a 3-pin XLR connector, and unbalanced audio on an RCA connector and a 3.5 mm stereo mini jack.
• Auto Sequence mode — Specific test patterns can be selected for a repeating sequence with selectable time intervals.
• Selectable RGB color output — Each color channel (Red, Green, or Blue) can be enabled or disabled via the set-up menu.
• Auto-memory recall — Settings are saved when the VTG 400 is turned off and automatically recalled when subsequently powered.
• Programmable & upgradeable — Using RS-232, updated firmware, including new test patterns and custom output scan rates, can be incorporated into the VTG 400.
• RS-232 control — Extron Simple Instruction Set (SIS™) is provided for RS-232 control via the Extron Windows®-based control program or third-party control.
• Screen Saver mode — An adjustable timer can be set to engage the VTG 400 in Screen Saver mode, with either the video output muted or as a repeating sequence of test patterns.
• Main panel security lockout — All main panel controls except the power button can be locked out to prevent unauthorized use or tampering.
• Rugged metal enclosure — Appropriate for field testing, but can also be placed on a desktop. For added protection and portability, a soft nylon carrying case is included.
• Internal international power supply — The autoswitchable internal power supply provides worldwide power compatibility.