Varian 990 dCLD II, Operation Manual

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Model 990 dCLD II Component Leak Detector
A-7
The commands listed in Table A-3 are used to cause an immediate change in the spectrom-
eter operating parameters. These commands
do not change the non-volatile operating
parameters.
Table A-3 Spectrometer Operating Parameters
Command Parameter
PUT-EMISSION Preceded by a four-digit number of microamps followed by a space, in the range 0300
to 2000, which sets the emission current of the ion source.
PUT-FOCUS Preceded by a three-digit number of volts followed by a space, in the range 100 to
250, which sets the variable focus voltage of the ion source.
PUT-GAIN Preceded by a two-digit number followed by a space, with a decimal point after the
first digit, in the range 1.0 to 9.0, used for adjusting the helium signal to match a
calibration standard leak.
PUT-ION Preceded by a three-digit number of volts followed by a space, in the range 150 to
350, which sets the ion voltage of the ion source.
PUT-OFFSET Preceded by a two-digit number followed by a space, in the range 00 to 99, which sets
the preamplifier offset index, used for nulling the preamplifier in the spectrometer
tube.
PUT-REPELLER Preceded by a three-digit number of volts followed by a space, in the range 200 to
450, which sets the repeller voltage of the ion source.