Keysight U1242C Service Manual

Also see for U1241C: Quick start guide User guide Quick start guide

Contents

Keysight U1242C Service Manual Manual pdf 42 page image

1 Calibration Procedures42 Keysight U1241C/U1242C Service GuideUsing the Front Panel for AdjustmentsThis section describes the procedures to perform adjustments from the frontpanel.To unsecure the multimeter, see “To unsecure the multimeter” on page 35. Onceunsecured, the reference value will be indicated on the display.Adjustment considerations– Ensure you are qualified to perform the adjustments.– Ensure the battery capacity is greater than the indicated 60%.– Ensure that the environmental temperature is 23 ºC ± 2 ºC and the relativehumidity is <50%.– Consider the thermal effects as you are connecting the test leads to thecalibrator and multimeter. It is recommended to wait for 3 to 5 seconds beforeyou begin the calibration after connecting the test leads.– Do not turn off the multimeter during calibration. This may cause allcalibration memory to be lost. Ensure that you quit the calibration mode beforeturning off the multimeter.– Calibrate the DC mV prior to ambient temperature calibration. Do not calibratethe DC mV immediately after a high current measurement or calibration.– Turn on the multimeter for at least 1 hour with the K-type thermocoupleconnected before proceeding with the ambient temperature adjustment.– by connecting specified terminals of the multimeter with copper wireson banana plugs as short as possible.– by removing all test leads from the terminals of the multimeter.NOTE After each adjustment, the display will show . If the calibration fails, themultimeter will emit a beep, and an error number will be displayed. Calibrationerror messages are described in “Calibration Error Codes” on page 54.CAUTION Never turn off the multimeter during an adjustment. This may delete thecalibration memory for the present function.