5790B
Operators Manual
6-26
AMPS_REF?
Returns the reference value against which shunt-corrected DELTAs are
computed.
Parameter
None
Responses:
1. (real) The reference value.
2. (real) The frequency of the reference. (If references at two different
frequencies were averaged, the second frequency is returned.)
3. (Integer) The number of readings used to generate the reference value.
0 = reference off, 1 = reference set, 2 = reference averaged.
4. (CRD) The input connector at which the last reference was measured,
for example, INPUT1, or NONE if no reference is set.
BRIGHTNESS
Sets the brightness of the GUI display.
Parameter Integer, 0 to 100, where 0 is dimmest and 100 is brightest.
Example
BRIGHTNESS 50
Sets the display to half brightness (the default value).
BRIGHTNESS?
Returns the brightness setting.
CAL_AC
Begins an interactive ac calibration procedure for one range or all ranges. This
does not do a calibration step, but sets up the Product so the next CAL_NEXT
command initiates the first step and the next CAL_NEXT? command returns the
first step.
Parameters
1. INPUT1 or INPUT2 (The input to be used, signifies normal ac calibration),
or WBND for Option 5790B/3 or Option 5790B/5 Wideband flatness
calibration.
2. (Optional) A number that defines the range amplitude (same as for the
RANGE command). If this parameter is included, do only the specified
range; if not included, do all ranges.
3. (Optional only if parameter 2 is present; prohibited otherwise) A number
that specifies which step to jump to of the procedure for the specified
range.
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