Vanguard ATO-600 - Manual (Page 15)

ATO-400 / ATO-600 Operating Procedures
15
4.0 ATO IMPORTANT FEATURES
4.1 Operating Voltages
The ATO operates with voltages between 90-240Vac, 50/60Hz.
4.2 ATO RS-232C Serial Interface
A built-in, RS-232C port permits the ATO to be interfaced with an IBM-compatible personal
computer. An IBM PC software package supplied with each ATO allows the user to retrieve test
records stored in the ATO’s memory. The software is compatible with Windows XP.
The RS-232C port is also used to calibrate the ATO at the factory.
4.3 ATO USB Interface
A built-in, USB port permits the ATO to be interfaced with an IBM-compatible personal computer.
An IBM PC software package supplied with each ATO allows the user to retrieve test records stored
in the ATO’s memory. The software is compatible with Windows XP.
The USB port is also used to calibrate the ATO at the factory.
4.4 ATO LCD Contrast Adjustment
The purpose of this procedure is to adjust the contrast level of the alpha-numeric characters
shown on the LCD display, in order to produce the best readability for the ambient light in the
testing area. To darken the LCD contrast, press and hold the Contrast/Paper
?
key for more than
1 second. To lighten the LCD contrast, press and hold the Contrast/Paper
?
key for more than 1
second. Release the key when desired contrast level is obtained. The ATO saves this LCD
contrast setting level in memory.