Keysight E1412A 6 1/2 Digit Multimeter Service Guide
47
Adjustment Procedures
Adjustments
Zero Adjustment
This procedure sets the zero calibration constants for each multimeter function
and range. The multimeter stores a new set of offset correction constants for
every measurement function and range each time this procedure is executed. The
multimeter will sequence through all required functions and ranges automatically
and store new zero offset calibration constants. ALL offset corrections are
determined automatically.
You may not correct a range or function individually
because the zero adjustment re-enters ALL zero offset correction constants
automatically.
This feature is intended to save calibration time and improve zero
calibration consistency.
1
Connect a 4-wire low thermal short across the HI and LO input terminals and
HI and LO Sense terminals of the Keysight E1412A (Figure 5-2).
2
Reset the Keysight E1412A multimeter by executing a *RST command.
3
Prepare the Keysight E1412A for calibration:
–
Enable CAL ........... CAL:SEC:STAT OFF, <security code>
–
Send input CAL value ....................................... CAL:VAL 0
4
Check to see if the last command has been completed using the *OPC?
command. Read the result; a 1 indicates that the operation has been
completed.
5
Perform the adjustment by sending the CAL? command and reading the
result.
ORDER OF ADJUSTMENTS REQUIREMENT Adjustments for each
function MUST be performed in the order given in the function’s
adjustment table. An accurate adjustment requires the
adjustments prior to the one in progress be within specification.
See the function’s table of adjustments for the order of
adjustments.
ZERO ADJUSTMENT REQUIREMENT The zero adjustment must be
a recent adjustment prior to performing any other gain
adjustment. It is recommended you perform the zero adjustment
one time just before performing the other gain adjustments.
AC VOLTAGE GAIN ADJUSTMENT REQUIREMENT AC voltage gain
calibration constants are dependent on a prior calibration of the
DC voltage function. You must have adjusted the DC voltage
function prior to adjusting the AC voltage function. Failure to do
so can cause significant calibration errors in the AC voltage
function.
Summary of Contents for E1412A
Page 1: ...Keysight E1412A 6 1 2 Digit Multimeter Service Manual 75000 Series C ...
Page 2: ......
Page 6: ...vi ...
Page 12: ...xii Keysight E1412A 6 1 2 Digit Multimeter Service Guide ...
Page 74: ...68 Keysight E1412A 6 1 2 Digit Multimeter Service Guide Adjustments CALibration ...
Page 80: ...74 E1412A 6 1 2 Digit Multimeter Service Guide Backdating ...
Page 118: ......
