Keysight Technologies 34970A Service Manual

Also see for 34972A: Manual

Contents

Keysight Technologies 34970A Service Manual Manual pdf 56 page image

3 Front-Panel Overview56 Keysight 34970A/34972A Service GuideTo Perform a Zero AdjustmentThe instrument features closed case electronic calibration. No internal mechanicaladjustments are required. The instrument calculates correction factors basedupon an input reference value and stores the correction factors in non-volatilememory. This procedure demonstrates making the zero adjustment from the frontpanel. The gain adjustments are similar.DO NOT perform this procedure before reading Chapter 4. Chapter 4 describesthis procedure, the required input connections, input signals, and testconsiderations required for a valid adjustment.1 Configure the channel.You must configure a channel before applying performing the adjustmentprocedure. Configure the channel to DC VOLTS and 6½ digits.2 Apply the input signal.In this example, the input signal is a copper short (see page 69).3 Setup the calibration.The display will show PERFORM CAL.4 Set the ad justment value.The display will show the a number. Edit the number to the actual input value.For the Zero Adjustment, the input value is 0.000000.5 Begin the ad justment.The display will show the progress of the adjustment. When all theadjustments are completed, the display will show done.+000.000,000 mVDCDONE