Front Panel Calibration - Agilent Technologies 6631B User Manual

B - Verification and Calibration

Front Panel Calibration

These procedures assume you understand how to operate front panel keys (see chapter 5).
Enable Calibration Mode
Action
Reset the unit by selecting Output, scrolling to *RST and pressing
1.
Enter.
2. Press Output On/Off to enable the output.
3. To begin calibration press Shift Cal, scroll to CAL ON and press
Enter.
4. Enter the calibration password from Entry keypad and press Enter. lf
the password is correct the Cal annunciator will come on.
If CAL DENIED appears, then an internal switch has been set to
prevent the calibration from being changed. (See the Service Manual.)
lf the password is incorrect, an error occurs. If the active password is
lost, the calibration function can be recovered by setting an internal
switch that defeats password protection. (See the Service Manual.)
Voltage Programming and Measurement Calibration
Action
5. Connect the DMM (dc volts mode) directly to the dc source. Do not
connect the load resistor or current shunt.
6. Press Shift Cal, scroll to CAL VOLT, and press Enter.
7. Press Shift Cal, scroll to CAL LEV, and press Enter to select the
first calibration point.
8. Press Shift Cal, scroll to CAL DATA, and use the Entry keypad to
enter the voltage value displayed on the DMM.
Press Shift Cal, scroll to CAL LEV, use Ì to scroll to P2 (the
9.
second calibration point), and press Enter.
Press Shift Cal, scroll to CAL DATA, and use the Entry keypad to
10.
enter the second voltage value displayed on the DMM.
Overvoltage Protection Calibration
Action
11. Press Shift Cal, scroll to CAL VOLT PROT, and press Enter.
12. Wait for the dc source to compute the OVP calibration constant. The
display returns to Meter mode when the calculation is complete.
60
Display
*RST
00.003V 0.0006A
CAL ON 0.0
CAL DENIED
OUT OF RANGE
Display
CAL:VOLT
CAL:LEV P1
CAL:DATA 0.00
CAL:LEV P2
CAL:DATA 0.00
Display
CAL:VOLT:PROT