Extech Instruments 7630 Operation Manual page 48

4.1.3.1 Alarm Volume
From the Hardware setting screen, highlight the Alarm Volume parameter by using the up or
down arrow keys. The up and down arrow keys will toggle the highlighted area of the screen
between the Alarm Volume, LCD Contrast, PLC Remote and GPIB Address.
Use the numeric keypad to set the Volume of the alarm in the instrument. Enter a number
between 0 and 9, 0 being the volume is off and 9 being the loudest setting. After the number
is entered, a momentary alarm chirp will occur to indicate the volume of the new setting.
4.1.3.2 LCD Contrast
From the Hardware setting screen, highlight the LCD Contrast parameter by using the up or
down arrow keys. The up and down arrow keys will toggle the highlighted area of the screen
between the Alarm Volume, LCD Contrast, PLC Remote and GPIB Address.
Using the up and down arrow keys and the numeric keypad set the Contrast of the display.
Enter a number between 0 and 9, 0 being the lightest color of displayed characters and 9 being
the darkest color of displayed characters. After the number is entered, the display will
automatically adjust to the new display setting.
4.1.3.3 GPIB Address (Option)
From the Hardware setting screen, highlight the GPIB Address parameter by using the up or
down arrow keys. The up and down arrow keys will toggle the highlighted area of the screen
between the Alarm Volume, LCD Contrast, PLC Remote and GPIB Address.
Use the numeric keypad to select the GPIB Address number between 0 and 30. Finish by
pressing the ENTER key.
4.1.3.4 PLC Remote
From the Hardware setting screen, you may turn the PLC remote ON and OFF by pressing the
"PLC Remote" soft key. Refer to the section 6. Connection of Remote I/O for details.
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