Varian 990 dCLD II, Operation Manual

Page: 133 / 162

Model 990 dCLD II Component Leak Detector
A-5
The commands listed in Table A-2 are used to set NON-VOLATILE operating parameters.
The current value of the operating parameter is changed to the new value. If PARALLEL
ENABLE is active, the response is
cant <CR><LF>.
Table A-2 Non-Volatile Operating Parameters
Command Parameter
DISABLE-AREJECT Sets the control unit to ignore the INIT-AREJECT command.
DISABLE-IDLE
Sets the control unit to ignore the RUN and IDLE commands.
DISABLE- n REJECT Sets the control unit to ignore the INIT- n REJECT command, where n is the reject set
point 1 through 4.
ENABLE-AREJECT Sets the control unit to use the INIT-AREJECT command.
ENABLE-IDLE Sets the control unit to use the RUN and IDLE commands.
ENABLE- n REJECT Sets the control unit to use the INIT- n REJECT command, where n is the reject set
point 1 through 4.
INIT-1LOG None. The leak rate analog output voltage becomes logarithmic at 1 V per decade.
See Section 4.6.5 “Output Control Setup”, or Section 3.7 “Analog Leak Rate Output
Voltage”, or Table 2-11 on page 2-15.
INIT-2LOG None. The leak rate analog output voltage becomes logarithmic at 2 V per decade.
See Section 4.6.5 “Output Control Setup”, or Section 3.7 “Analog Leak Rate Output
Voltage”, or Table 2-11 on page 2-15.
INIT-3LOG None. The leak rate analog output voltage becomes logarithmic at 3 V per decade.
See Section 4.6.5 “Output Control Setup”, or Section 3.7 “Analog Leak Rate Output
Voltage”, or Table 2-11 on page 2-15.
INIT-AREJECT A two-digit leak rate mantissa with a decimal point after the first digit followed by E– ,
followed by a two-digit leak rate range exponent: the helium leak rate number in atm
cc/sec. Values outside the working range of the leak detector are not stored. Use to
set the value of the audio reject set point.
INIT-AZ<0 Preceded by a 1 or a 0 followed by a space, to set the AUTO-ZERO<0 function Active
or Inactive respectively.
INIT-DAC A number in the range 0 to 255 followed by a space, to set a positive offset voltage in
millivolts to electrically null the analog output voltage.
INIT-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.
INIT-EXPONENT A three-character (minus followed by two digits) number indicating the exponent of
the least sensitive range of detectable leak. Acceptable values are within the least
sensitive range (as reported by ?RANGE<CR><LF>) and the three lower (more
negative exponent) ranges. Unacceptable values not stored. It is best to use
INIT-RANGE before using INIT-EXPONENT.
INIT-EXTLEAK A two-digit leak rate mantissa with a decimal point after the first digit followed by E– ,
followed by a two-digit leak rate range exponent: the helium leak rate number in atm
cc/sec of the external calibration standard leak. Values outside the working range of
the leak detector are not stored.