5790B
Operators Manual
6-30
CAL_DAYS?
Returns the number of days elapsed since the most recent verification or
calibration.
Parameters
• No argument (Returns the number of days since the most recent
verification, as set by CAL_DATE)
• MAIN (Entire main input calibration)
• WBND (Wideband calibration)
• SERVICE (Service calibration)
• DC (DC calibration)
• AC (AC calibration)
• ZC (DC zeros calibration
• WDC (Wideband 1 kHz calibration)
• WAC (Wideband Flatness)
• ALL (All of the above)
• A group name from Appendix C, for example,
AC_2_2VResponseResponse
• (Integer) The number of elapsed days.
Response
(Integer) The number of elapsed days.
CAL_DC
Begins a dc calibration procedure for one range or all ranges. As in CAL_AC, this
specifies which step the next CAL_NEXT command initiates.
Parameters
1. INPUT1 or INPUT2 (The input to be used; signifies dc calibration), or
WBND for Option 5790B/3 or Option 5790B/5 Wideband gains 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.
Example
An example sequence of commands for calibrating a range (in this case, the
220 mV range) is as follows:
CAL_TEMP 23.5
CAL_DC INPUT2, 200 mV
CAL_NEXT 200 mV
CAL_NEXT -200 mV
An error occurs if either the entered value is out of range or the measured
input is out of range.