Agilent Technologies N3280A Current Priority Tests, Current Programming and Readback Accuracy

B - Performance and Calibration Procedures

7.Turn on the output and program the 15mA current readback range. Measure the output current.

8.Set the ammeter to the 10mA range, and record the output current reading on the ammeter. The difference between the ammeter reading and the measurement query result should be within the limits specified Readback Accuracy −15mA Current Limit.

9.Turn off the output and connect a 20k ohm resistor in series with the ammeter across the output as shown in Figure B-1c. You do not need a shorting switch.

10.Turn on the output and program the 0.5mA current readback range. Measure the output current.

11.Set the ammeter to the 1mA range, and record the output current reading on the ammeter. The difference between the ammeter reading and the measurement query result should be within the limits specified Readback Accuracy −0.5mA Current Limit.

“OUTP ON,(@1)” “SENS:CURR:RANG 0.015,(@1)” “MEAS:CURR? (@1)”

“OUTP OFF,(@1)”

“OUTP ON,(@1)” “SENS:CURR:RANG 0.0005,(@1)” “MEAS:CURR? (@1)”

Current Priority Tests

Current Programming and Readback Accuracy

NOTE: The voltage limits in Current Priority Mode are not programmable.

Action

1.Reset the dc source and connect an ammeter directly across the HI and LO terminals as shown in Figure B-1a.

(*RST resets the dc source to its default settings with the output off.)

2.Turn on the dc source and program the Current Priority mode. (The default output current is set to 0A.)

3.Set the ammeter to the 1∝A range, and record the output current reading on the ammeter. The reading should be within the limits specified in the performance test record card under Current Priority Programming Accuracy @ 0A.

4.Program the output current to 0.5mA. Measure the output current.

5.Set the ammeter to the 1mA range, and record the output current reading on the ammeter. The reading should be within the limits specified in the performance test record card under Current Priority Programming Accuracy @ 0.5mA.

6.Program the output current to −0.5mA. Measure the output current.

7.Set the ammeter to the 1mA range, and record the output current reading on the ammeter. The reading should be within the limits specified in the performance test record card under Current Priority Programming Accuracy @ −0.5mA.

Program Commands

“*RST”

“OUTP ON,(@1)” “SOUR:FUNC:MODE CURR,(@1)”

“CURR 0.0005,(@1)”

“CURR -0.0005,(@1)”

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