The T.O.V.A. supports two different hardware setups: PTE and EAV. The EAV setup was designed for desktop PCs. With a VGA monitor plugged into the video out port of on the back of the T.O.V.A. USB device, the T.O.V.A. test can be run in your operating system (e.g., Windows or Mac OS X), without rebooting your PC.
While the EAV setup was designed to work best with desktop PCs, it will also work with most laptops or all-in-one PCs. Even if your computer doesn't have a VGA port, you can still use the EAV setup.
You Absolutely Need:
- An External Monitor
- Must have a VGA port
- Must natively support 1024x768 resolution
- A VGA Cable
- Connects the external monitor to the video out port of your T.O.V.A. device
- One is included with your T.O.V.A. kit.
- Sleep/standby mode disabled, to avoid test failure
You Might Also Want:
- External PC speakers
- Plug into the audio out port of your T.O.V.A. device
- Required for running the T.O.V.A. auditory test
- A second VGA cable
- Required for a conventional desktop PC, where the external monitor is the only screen
- Connects your PC to the video in port of your T.O.V.A. device
- Laptops/All-in-one PCs: Optional, to display T.O.V.A. test instructions on the external monitor instead of the built-in screen
- A VGA adapter
- Connects video in on the T.O.V.A. device to the PC's video port (HDMI, DVI, etc.) if your PC does not have a VGA port
- A 3.5mm Male-to-Male audio cable
- Connects your PC to the audio in port of your T.O.V.A. device
- Required if you need your T.O.V.A. test instructions (or other PC audio) to play on external PC speakers
- Included with your T.O.V.A. kit.
You Don't Want
Please don't connect a video cable from your external monitor to your computer. This will cause your monitor to ignore the T.O.V.A. device.
Instead, if you want to use the external monitor for more than testing, connect a VGA adapter (not included) from your computer's video port to the video in port of the T.O.V.A. device.
Alternative EAV hardware setups
You can adjust the EAV hardware setup somewhat:
If your computer does not have a VGA port, it probably has a video output of a different type, such as HDMI or DVI. Instead of the standard VGA cable, as included in the T.O.V.A. kit, you can purchase a VGA adapter cable from a computer or electronics store, and the EAV hardware setup should work just fine.
Warning: You CANNOT use an adapter cable to connect your T.O.V.A. USB device to your external monitor. The EAV hardware setup requires a VGA connection to a VGA monitor.
Instead of using an adapter cable, you can leave out the video connection between your computer and the T.O.V.A. USB device. This setup won't work on a regular desktop computer (since it doesn't have a built-in screen), but it will with a laptop or all-in-one computer. With this configuration, the T.O.V.A. test instructions will appear on your laptop or all-in-one screen, but the T.O.V.A. test itself will appear on the external VGA display.
Some T.O.V.A. users do not make use of the T.O.V.A. auditory test, using the visual test only. If you don't intend to administer the auditory test, you can leave out the audio connections.
Why Use the EAV Setup?
The EAV setup can be the best option for desktop computers that don't have a built-in display. Also, some Windows and Mac laptops and All-in-One PCs do not work with the simpler PTE hardware setup, and the EAV setup is the best workaround. Check out our Compatibility page for details.