Gefen
Gefen HD Pattern Signal Generator
Best diagnostic tool for professional AV installers and video technicians.
The GefenToolbox HD Pattern Signal Generator is an advanced testing device for audio and video equipment. It offers 39 built-in timings, 41 patterns, and 4 data analysis patterns, providing over a thousand testing combinations for both analog and digital devices. The front panel features an LCD screen for easy viewing of functions. This versatile signal generator can be controlled via front panel buttons, the included IR remote, or downloadable software. It is portable, wall-mountable, and field-upgradeable.
$999.00
Owner Satisfaction
4.7
/ 5
Category Rank
6
/ 235
#6 in Video Editing Hardware & Production Equipment
Price vs Category Average
-38%
Below average
Maximum Pixel Clock
225
/ MHz
Who it's for
- Calibration technicians needing precise, standardized display verification
- System integrators testing diverse legacy and modern display technologies
- Field engineers requiring portable tools for on-site troubleshooting
Who should skip it
- Budget-conscious buyers seeking basic connectivity testing solutions
- Professionals requiring support for HDMI 2.1 and advanced HDR metadata
- Casual users lacking specialized video engineering and calibration knowledge
Performance breakdown
Signal Versatility
Over a thousand testing combinations cover almost any calibration scenario imaginable.
Control Flexibility
Multiple input methods ensure seamless integration into any professional studio workflow.
EDID Management
Robust EDID copying capabilities simplify complex display and source handshaking issues.
Audio Testing
Internal LPCM generator handles multi-channel surround sound configurations with ease.
Build Portability
Compact, wall-mountable design makes it ideal for both field and rack.
Interface Intuition
Front panel LCD provides clear status updates during rapid testing cycles.
Key Specs
Maximum Pixel Clock
225 MHz
Input Video Signal
1.2V p-p
Input DDC Signal
5V p-p (TTL)
Analog Audio Input Impedance
10 kOhms
Frequency Response
20 Hz - 20 kHz
SNR
> 90 dB
THD
< 0.001% at 1 kHz
Crosstalk
> 90 dB
Features
- Multi-format video output for SD and HD video up to 1080p
- Supports PC/HD resolutions up to 1920 x 1200
- 39 built-in timings and 41 patterns
- 4 data analysis patterns
- Supports RGB 4:4:4, YCbCr 4:4:4, and YCbCr 4:4:2 color spaces
- Supports NTSC and PAL frame rates
- Internal sine wave generator for 2, 5.1, and 7.1 channel LPCM
- RS-232 control via downloadable software
- Front panel LCD screen and LED indicators
- Supports reading and copying EDID functionality
What customers say
Customer sentiment regarding the Gefen HD Pattern Signal Generator is overwhelmingly positive, positioning it as an indispensable 'workhorse' tool within the professional audio-visual installation and calibration community. Users consistently praise its reliability and robust functionality, highlighting its critical role in quickly diagnosing complex signal path issues and verifying display integrity. The device is frequently lauded for its intuitive interface, which allows technicians to efficiently cycle through a comprehensive set of test patterns—including color bars, crosshatch, and various solid colors—across multiple resolutions up to 1080p. This ease of use translates directly into significant time savings on job sites, a factor that professionals value highly. While the initial purchase price is acknowledged as substantial, the consensus among experienced users is that the generator offers exceptional value for money due to its high return on investment (ROI) through increased efficiency and reduced troubleshooting time. The build quality is consistently rated as excellent, reflecting Gefen's reputation for durable professional equipment that withstands the rigors of field use. Minor analytical feedback occasionally points to limitations regarding support for newer, cutting-edge standards (such as 4K/60Hz or advanced HDR metadata generation in older models), but for its core function of reliable HD troubleshooting and calibration, the generator maintains a status of high respect and essential utility among its dedicated user base.
Know before you buy
The Gefen HD Pattern Signal Generator is designed for both analog and digital equipment. It supports SD and HD video up to 1080p, as well as PC resolutions up to 1920 x 1200, making it suitable for testing monitors, projectors, and video switchers.
Yes, it includes an internal sine wave generator that supports 2, 5.1, and 7.1 channel LPCM audio, allowing you to verify audio signal paths alongside your video testing.
The device features built-in EDID functionality that allows you to read and copy EDID data from connected displays. This is particularly useful for troubleshooting handshake issues between sources and sinks.
You have three control methods: the physical buttons on the front panel, the included IR remote for handheld operation, or the downloadable software via RS-232 for more advanced configuration.
Yes, the unit is field-upgradeable. You can download firmware updates to ensure the device remains compatible with evolving video standards and testing requirements.
It is designed for both. The unit is compact and portable for field use, but it also includes mounting hardware, making it easy to secure in a permanent rack or wall-mount setup.
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