Chapter 1: ASSISTIVE TECHNOLOGY TOOLS
Assistive Technology Manual

OVAC 210 CCTV

OVAC 210 Features:

• OVAC MINI-ROLLER is a black and white CCD magnifier designed for hand scanning or flex-arm mounting
• A single selector switch on the camera top controls operation
• A flex-arm for write-under capability is provided as standard
• Viewing modes of positive/photo and reverse enhanced
• The MINI-ROLLER weighs 2 pounds and uses 2 wafts of power
• Variable magnification built in
• Rollers track while reading
• Dual mountings - rollerbase and flexarm
• Magnification:
  • 8X to 18X on a 13" TV
  • 12X to 27X on 19" TV
  • 16X to 36X on a 25" TV

The OVAC READER is connected to your TV by a cable which can be as long as you need to arrange things to meet your needs. You can place your desktop OVAC READER on a table beside your chair and the TV. Your reading system is now another channel on your TV, so you just change channels to switch between reading and the TV. For regular reading material, the simple controls of the OVAC are seldom needed:

• The turn of a knob lets you, for example, switch from writing a letter to looking up a word in a thick dictionary.
• A switch on the camera lets you reverse the image to white type on a black background for less glare. Desktop models are equipped with a reading material platform that is easy to move in any direction. It holds a single page or a thick reference book.
• The platform allows you to easily scan back and forth across the page as you read a line, and down the page as you read along.
• The unobstructed field of view of the desktop reader lets you see your material clearly as you write.
• Reading pill bottle labels, doing first aid, making small repairs, and working on handcrafts, etc., are all made easy. Good depth of field means that you can move something up or down under the camera lens, and it stays in focus.

OVAC Use Instructions:

1. Remove the protection lens cap from the camera.
2. Push the three position switch on the Video Enhance/Control Module (VECM) end to the left. This will turn the unit to "ON" in a positive viewing mode. Returning the switch to the center turns the unit "OFF" while pushing the switch to the right will turn the unit "ON" in a negative viewing mode. There is a short delay when first switching the unit "ON" in either mode.
3. Place the object to be read under the roller base. Slowly move the camera up the base and stop when reaching the top. Tighten the knob if needed. Reach under and focus the lens.
4. To increase the magnification, move the camera to the lowest point on the base and then re-focus.   
5. For write-under or work-under, remove the camera from roller base and attach to the flex arm. Adjust height (magnification) and focus to proper levels. 
6. For maximum contrast enhancement, the two-position switch on the left side of the VECM should be pushed (enhanced position). To view photos, push the two-position switch on the right side of the VECM to the right (photo position) and the three-position switch to the left for positive viewing mode.

OVAC Hookup:

Assistive Technology Manual Home Page