B - Verification and Calibration
150
Steps 7-11 apply to Agilent 66309B/D output 2 only
7. Turn off the dc source and connect the DMM and current monitor
to output 2 as shown in figure B-1A. Then turn on the dc source
and select Output 2.
8. Set the output 2 voltage to 5 V and the current to 0 A. Press
Output On/Off to enable the output. Output current near 0 A.
9. Divide the voltage drop across the current monitor by its resistance
to convert the value to amperes. Record this value (I2lo). Reading within low current limits
(see table B-4)
10. Set the output 2 current 1.5 A.
11. Divide the voltage drop across the current monitor by its resistance
to convert the value to amperes. Record this value (I2hi). Also
record the current reading on the front panel display (I2fphi).
Readings within high current limits
(see table B-4)
Low Range Current Measurement (Agilent 66311B/D, 66309B/D only)
Action Normal Result
12. Turn off and connect output 1 as shown in Figure B-1B using the
400 ohm load resistor. Set the DMM to operate in current mode.
13. Turn on the dc source, access the Input menu, and set the current
range to LOW. CURR:RANG LOW
14. Set the output 1 voltage to 0 V and the current 3 A. Press Output
On/Off to enable the output. Output c urrent near 0 A.
15. Note the current reading on the DMM (Ilrlo). Record the current
reading on the front panel display. Reading within low current
measurement (see table B-3, B-4).
16. Set the output 1 voltage to 8 volts. Output current near +20 mA.
17. Note the current reading on the DMM (Ilrhi). Record the current
reading on the front panel display. Reading within high current
measurement (see table B-3, B-4).
Current Sink Measurement
Action Normal Result
18. Turn off the dc source and connect an external supply to output 1
of the unit as shown in figure B-1C using the 400 ohm load
resistor. Set the DMM to operate in current mode.
19. Turn on the dc source, access the Input menu, and set the current
range to LOW. CURR:RANG LOW
20. Access the Input menu and set the current sense detector to DC. CURR:DET DC
21. 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.
22. Note the current reading on the DMM (Isinklo). Record the
current reading on the front panel display. Read ing within low current sink
measurement (see table B-2, B-3, B-4).
23. Access the Input menu and set the current range to HIGH. CURR:RANG HIGH
24. Short out the load resistor by connecting a jumper across it. Output current approx. −2 A
25. Note the current reading on the DMM (Isinkhi) . Record the
current reading on the front panel display. Reading within high current sink
measurement (see table B-2, B-3, B-4).