Full-Scale Current Accuracy Verification - Keysight Technologies BT2152B Operating And Service Manual

5 Verification and Calibration
Step 1. Start the verification. Send
Verification Step 1
Select the channel to verify
Step 2. Wait 15 seconds for the unit to settle before proceeding with measurements
Step 3. Start the zero-scale current verification. Send
panel TEST light flashes orange when this command is executed.
Verification Step 3
Set the time for the measurement in seconds
Set the interval the measurement in seconds
Step 4. Wait for the measurement time set in step 3 to complete. Either send
the query returns a "1", or wait until the front panel TEST light turns off.
Step 5. Fetch the measurement reading from the BT2152A/B. Send
Verification Step 5
Return the measurement data from a channel
Step 6. Verify that the zero-scale current error is within the specified accuracy provided in the Quick
Reference section of this guide.
Step 7. If verifying multiple channels, repeat steps 1 through 7 for the rest of the channels.
Step 8. End the zero-scale current verification. Send

Full-Scale Current Accuracy Verification

Current measurement accuracy is verified near or at the 10-mA full-range current. Gain error is
significant at the top of the range and adds to any offset error in the system. The fixture incorporates a
442 ohm resistor. During full-scale current accuracy verification this resistor is in series between the
DMM measuring current and the output channel, to establish the current level at near or at 10 mA for
verification.
Step 1. If you have not already done so, connect a 7.5 digit (or better) DMM to the verification fixture.
Step 2. Set the DMM for DC current measurement, 10 mA range, and 10 PLCs (to integrate noise).
Step 3. Start the verification. Send
Verification Step 3
Select the channel to verify
Step 4. Set an output voltage. Send
112
CAL:VER:STAR <channel>
Setting
1
CAL:VER:MEAS:INIT <time>,
Setting
<time> = 10
<tint> = 10
Setting
@1
CAL:VER:END
CAL:VER:STAR <channel>
Setting
1
CAL:VER:VOLT <voltage>
Keysight BT2152A/B Operating and Service Guide
<tint>. The front
SENS:VER:AVAI?
FETC:CURR:LAT? (@channel)
until