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4.1.2
Instrument Configuration Parameters
DISPLAY CONTRAST
This function allows you to change the lightness and darkness of the display to
best suit the environment.
Range
0 to 255*
*The display is no longer legible above 130
To adjust the contrast, press the ► button to move the blinking cursor to the dis-
play contrast value. The default value is 80. Use the ▲ and ▼ buttons to lighten
or darken the display. The higher the number the lighter the display will be. When
finished press the ◄ button to move the cursor back to the parameter selection
position.
ALARM SETTINGS
This function allows you to select a low insulation resistance value that will cause
an alarm symbol to appear on the display and will cause the buzzer to emit a con-
tinuous tone when the measured insulation resistance falls below this value.
Adj. Voltage 1
Adj. Voltage 2
Adj. Voltage 3
To adjust the alarm settings, press the ▼ button until the blinking cursor is to
the left of alarm settings. To adjust the alarm value press the ► button. From
the screen displayed, you can adjust low limit resistance values for 500V, 1000V,
2500V, 5000V or the three adjustable voltage positions.
To change the low limit for any of these voltage positions, use the ▲ and ▼ but-
tons to select the voltage, then press the ► button to highlight the resistance value
for that voltage. Next, use the ▲ and ▼ buttons to increase or decrease the value
at the blinking cursor position.
Once the desired resistance value has been programmed, press the ◄ button to
move the cursor again to the voltage selection part of the screen. You may now
select the different voltage and adjust its value as just described.
To exit the alarm setting function, press the DISPLAY button. This will bring you
back to the top of the SET-UP menu.
20
Voltage
500V
1000V
2500V
5000V
Range
30kΩ to 2TΩ
100kΩ to 4TΩ
300kΩ to 10TΩ
10kΩ to 10TΩ
Megohmmeter Model 5070
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