User`s guide

B - Verification and Calibration
140
Low Range Current Measurement (Agilent Model 66311B Only)
Action Normal Result
7. Turn off and connect the dc source as shown in Figure B-1B using
the 400 ohm load resistor. Set the DMM to operate in current
mode.
8. Turn on the dc source, access the Input menu, and set the current
range to LOW.
CURR:RANG LOW
9.
Set the output voltage to 0 V and the current 3 A. Press Output
On/Off to enable the output.
Output current near 0 A.
10. Note the current reading on the DMM (Iout). Record the current
reading on the front panel display.
Reading within low current
measurement (see table B-2).
11. Set the output voltage to 8 volts. Output current near +20 mA.
12. Note the current reading on the DMM (Iout). Record the current
reading on the front panel display.
Reading within high current
measurement (see table B-2).
Current Sink Measurement
Action Normal Result
13. Turn off the dc source and connect an external supply to the output
of the unit as shown in figure B-1C using the 400 ohm load
resistor. Set the DMM to operate in current mode.
14. Turn on the dc source, access the Input menu, and set the current
range to LOW.
CURR:RANG LOW
15. Access the Input menu and set the current sense detector to DC. CURR:DET DC
16.
Turn on the external supply and program it to 8 volts and 5 A.
Program the dc source to 0 V and 1 A.
Press Output On/Off to enable the output.
Output current near −20 mA.
17. Note the current reading on the DMM (Iout). Record the current
reading on the front panel display.
Reading within low current sink
measurement (see table B-2).
18. Access the Input menu and set the current range to HIGH. CURR:RANG HIGH
19. Short out the load resistor by connecting a jumper across it.
Output current approx. −2 A
20. Note the current reading on the DMM (Iout). Record the current
reading on the front panel display.
Reading within high current sink
measurement (see table B-2).
Restore the Language Setting
Perform this procedure only if you changed the programming language from COMP to SCPI in the
beginning of the verification procedure.
Action Normal Result
1. Access the Address menu and scroll to the LANG: command. LANG: SCPI
2. Change the language from SCPI to COMPatibility, and press Enter. LANG: COMP