5730A
Operators Manual
6-24
Table 6-5. Commands (cont.)
CAL_TEMP
Description
Sequential command, ignored if not in remote.
Sets the temperature for calibration. This should be done before sending CAL_REF,
CAL_WBFLAT, CAL_WBGAIN, or CAL_CHK commands. Once set, the temperature is
used for all calibration activities until it is changed. If the temperature is not set before a
calibration activity, the Calibrator uses a default of 23.0 °C.
Parameter Temperature in degrees C.
CAL_TEMP?
Description
Sequential command.
Returns the previous ambient temperature setting used for a particular calibration
procedure.
Parameter B5725, CAL, WBFLAT, WBGAIN, or CHECK
Response (Float) Temperature in degrees C.
CAL_USB
Description
Overlapped command. Saves a calibration report to a USB thumb drive connected to the
front panel USB host port.
Parameter
CAL (Output change report for calibration)
CHECK (Output change report for calibration check)
RAW (A list of all calibration constants)
Example CAL_USB RAW
CAL_WBFLAT
Description
Overlapped command, ignored if not in remote.
Does Wideband AC Module (Option 5730/03 or 5730A/05) flatness calibration. There are
two different calibration procedures for the wideband module- gain and flatness.
Wideband gain is to be done at every calibration cycle. Wideband flatness is needed only
during full verification, recommended every two years. For reference, the manual
procedure for wideband flatness calibration is in Chapter 7.
After sending a CAL_WBFLAT START command, the controller must adjust the
Calibrator output with the INCR command until it matches the calibration voltage, then
inform the Calibrator of the fact by sending a CAL_WBFLAT NULL command. A series of
points to test is selected automatically by the software. After each CAL_WBFLAT NULL
command, determine the calibration setting by sending an OUT? command.
Parameter
START (Starts flatness calibration, sources the first point)
NULL (Calculates flatness constant, sources the next point)
STORE (Stores wideband flatness constants into non-volatile memory)
Example
CAL_TEMP 24.6
CAL_WBFLAT START
(Connect to external standard as in Chapter 7)
OPER
INCR (Enough to get the Calibrator output correct)
CAL_WBFLAT NULL
(Repeat the preceding two commands for each calibration point. CAL_NULL
automatically sources the next calibration point. When OUT? returns 0,V,0, all points
have been calibrated.)
CAL_WBFLAT STORE
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