Summary of Contents for Agilent Technologies U1401B
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MODIFICATION RECOMMENDED U1401B-02A S E R V I C E N O T E Supersedes: U1401B-02 U1401B Handheld multi-function calibrator or meter Serial Numbers: See Appendix (B) Constant current output may be out of specification Parts Required: Description Qty. NONE...
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Loopback Verification procedure: Users can verify if the unit is impacted by performing the following steps below Connect the output terminal to the input terminal on U1401B. Photo needed… Turn the rotary switch to the (constant current output/input) positions.
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Page 3 of 8 U1401B-02A Solution/Action: Users can choose to readjust the unit’s constant current output back to meet the performance specification by following the steps below OR Contact the nearest Service Center to have the unit’s constant current output recalibrated.
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Page 4 of 8 U1401B-02A •CAL-1: Press MODE. The primary and secondary displays show “CAL- 1” and “- rdy” respectively. Press OUTPUT. The primary and secondary displays show “CAL- 1” and “00000” respectively. Press to adjust the output voltage until the reading on the 3458A is the same as the CAL-0 value recorded above.
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Page 5 of 8 U1401B-02A Follow the steps below to perform calibration for the output voltage ranges and values listed in Table 1-2: 1. As you enter each calibration step, the primary and secondary displays show the output current value and “-rdy-” respectively.
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Page 6 of 8 U1401B-02A Remark: Detail calibration process is available in the service guide. Revision History: Service Note Date Author Reason For Change Revision 1/29/15 As published 3/12/15 Revise the affected serial number and please see Appendix (B). Remove the Appendix (A).