The GefenToolbox HD Pattern Signal Generator is the most advanced testing device for your audio and video equipment: 39 built-in timings 41 patterns and 4 data analysis patterns that provide over a thousand testing combinations for both analog and digital devices. The front panel LCD screen provides easy viewing of functions and features for each timing / pattern. This device can be conveniently controlled via the front panel buttons the IR remote or the downloadable software from the Gefen Web site. In addition to its portability this signal generator is wall-mountable and field-upgradeable. How It Works Connect the HDMI or VGA output ports of the GefenToolbox HD Pattern Signal Generator to your HDTV display (DVI displays can be connected using a HDMI-DVI adapter and Component Video displays by using a VGA-Component Video adapter). Power-on all equipment. The front panel LCD will display all features and options of the active timing and pattern. You can feed digital or analog audio into the generators rear panel and hear multi-channel digital audio or use the built-in sine wave test tone.