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Set Pt 2 High
Default Value: OFF
This operates in the same manner as SET PT 1 HIGH, described above.
Set Pt 2 Low
Default Value: OFF
This operates in the same manner as SET PT 1 LOW, described above.
Units mTorr/Torr/kTorr—Bar/mBar/microBar—Pascal/kPascal—Arb
Default Value: Torr
This allows selection of the units to be used in display of the pressure. Press either the RAISE or
LOWER buttons to alternate between Torr, mBar and Pascal. You will notice that both the GAGE 1and
GAGE 2 indicators will be lit also. This is to let you know that the units of measure apply to both gauges;
it is not possible to select Torr for one gauge and mBar for the other gauge. The “Arb” value allows
arbitrary units to be used; the value displayed is the same as for Torr units, and can be adjusted using the
“Full Scale” and “Calibrate” functions.
Calibrate
Default Value: 1.00 (Internal value)
This allows the user to modify the reading for either gauge by multiplying by a value between 0.500 and
2.000. This is convenient for calibration of the CDG. The CDGs are calibrated by the manufacturer
before shipment; we suggest you use this adjustment only if you have reliable calibration data. The
multiplier is internal and is not seen by the user. The digital display shows the result of the pressure
multiplied by the internal multiplier.
This adjustment may also be used to set the display to some value that is unique to your application or
experiment.
Note
This adjustment is applicable to either gauge; please select the
appropriate gauge by pressing GAUGE SELECT until the desired gauge
is indicated. Use RAISE and LOWER as described above to set to the
desired value.
The CALIBRATE function may be adjusted only when the CDG pressure is at 50% of full scale or higher.
Full Scale
Default Value: 1.00 Torr
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