Varian 979 Series, Operation Manual

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Model 979 Series Helium Mass Spectrometer Leak Detector
B-6
DRAFT 9/15/03
?PRESSURES Two lines. Each begins with a <cr><lf>. The first line consists of the words test
port TC followed by a number in milliTorr. The second line consists of the words
system TC followed by a number in mTorr.
?RANGE A two-character (minus followed by one digit) number indicating the current
exponent of the least sensitive range of detectable leak. The reported leak rates
are in this range and three lower (more negative exponent) ranges. See also
INIT-RANGE.
?RANGESTOP Reports the value of the Rangestop variable.
?REJECT A seven-character number consisting of a two-digit reject leak rate mantissa
with a decimal point after the first digit followed by E
−
then a two-digit exponent
(e.g., 7.0E
−
05). This inquiry is used for reporting the reject leak rate most
recently input using INIT-REJECT.
?>REJECT Reports the status of reject set point #1.
?xREJECT (Where x is a number from 1 to 4 or the letter A) a seven-character number
consisting of a two-digit reject leak rate mantissa with a decimal point after the
first digit followed by E
−
then a two-digit exponent (e.g., 7.0E
−0
5). This inquiry
is used for reporting the reject leak rate most recently input using
INIT-xREJECT. NOTE:?REJECT and ?1REJECT refer to the same variable.
?REPELLER Reports the repeller voltage.
?ROUGH Reports the currently stored Test Sequencer rough time.
?RSONOFF Reports the status of the Rangestop function. Enabled or Disabled.
?SEQONOFF Reports the status of the Auto Sequencer. Enabled or Disabled.
?SETUP Seven lines. Each begins with a <cr><lf>. The first line reports the turbo pump
speed as Low or Off. The second line reports the selected manual leak rate
range, and the ranging method as auto or manual. The third line reports the
least sensitive leak rate range. The fourth line reports the reject set point leak
rate. The fifth line reports the calibration standard leak rate. The sixth line
reports the DAC output method as Linear, Log(2V), or Log(3V). The seventh line
reports the active filament status as One or Two, followed by Lit or Out.
?STDLEAK A seven-character number consisting of a two-digit calibration standard leak
rate mantissa with a decimal point after the first digit followed by E–, and then by
a two-digit exponent (e.g., 1.3E-07). This inquiry is used for reporting the
calibration standard leak rate most recently input using INIT-STDLEAK.
?SUPPRESSOR Reports the suppressor voltage.
?TEST Reports the currently stored Test Sequencer test time.
Table B-1 Internal Operating Parameters (Continued)
Inquiry Response