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vd84-201113
Via USB interface the user can set logging rates between 1,0s
and 6000s arbitrarily! The logging rate which was set last this
way is also available for choice in the VD84 display and shown
after "trig".
Without further keystroke the vacuum meter is switched into Auto-Off Mode after
5 seconds. The last settings are saved.
5.2 Adjustment
The instrument is factory adjusted. Through use under different climatic condi-
tions, through extreme temperature changes, ageing or contamination readjust-
ment can become necessary.
To adjust your VD84, switch the unit into Configuration Mode. For this the
instrument must be switched-off. Hold the Mode-Key pressed then, until the dis-
play shows "rAtE".
Then press Mode-Key several times, until the display shows "CAL":
Adjustment on Atmosphere Pressure
After 5 more seconds the display shows:
Press the Mode-Key now to adjust the gauge on atmosphere pressure:
During the adjustment procedure the display
shows "CALI".
Afterwards the unit switches to Auto-Off Mode.
Adjustment on atmosphere pressure is possible only if the ac-
tual pressure is above 40 mbar. Otherwise adjustment is de-
nied and the error message "Err" displayed.
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