HP E8402A, User And Service Manual, Page: 199 / 249

Calibrating and Verifying Performance 201 Chapter 4
CALibration:VALue:TEMPerature <value>
CALibration:VALue:TEMPerature?
CALibration:VALue:TEMPerature <value> provides the enhanced monitor with an
externally measured temperature measured at a sensor inside the mainframe in a
constant temperature environment with no modules installed in the mainframe. The
value will be used to calibrate each temperature sensor of the enhanced monitor.
If a value of -1 is provided, the calibration command will calculate a calibration
temperature value from the average of all slot cavity sensors. Since the temperature
sensors are absolute temperature devices, this is adequate for most calibration
purposes.
CALibration:VALue:TEMPerature? returns the externally measured temperature
stored by the CALibration:VALue:TEMPerature command. If the value of -1 was
stored by the CAL:VAL:TEMP command and a CAL:TEMP? or CAL? was
performed, then CAL:VAL:TEMP? will return the averaged value calculated by the
calibration routine.
Parameters
Returned Data
Comments
•
The sensor used for this measurement should be located in the center of the
mainframe’s slot cavity. It should have an accuracy of 0.5 °C. If you want the
calibration routine to calculate a temperature calibration value you MUST
send a CAL:VAL:TEMP -1 before every calibration command.
Error Conditions
The following table lists the most common error conditions and causes. Error
numbers and corresponding messages can be found using SYSTem:ERRor? query.
Reset Condition
Calibration is not affected by *RST.
Related
Commands
CALibration:ALL?
Name Type Range Default Description
< value> float32 -1, 0-55 -1 Provides the external measurement of ambient
temperature in
°
C. issuing a -1 forces the
Enhanced Monitor to use the average value of
all 39 slot exhaust temperature sensors as the
calibration value.
Type Range Default Description
float32 -1, 0-55 -1 Returns the stored external measurement of ambient
temperature in
°
C.
Number Message Probable Cause
-221 “Settings Conflict” The mainframe’s power is off.