HP 3457A Service Manual page 125

g. Set the output of the Voltage Source to 0 V and disconnect it from the HP 3457A input terminals.
5-27. Two-Wire Ohms Offset Calibration - Front Terminals
5-28. Equipment Required. A low thermal short (copper wire) is required for this procedure.
a. Select the 2-Wire Ohms Function. (Press the OH M function key ).
b. Connect a short between the Front Panel HI and LO input terminals.
d. Repeat steps "cl " through " c4 " for each of the remaining ranges.
e. Remove the short from the Front Panel HI and LO Input Terminals.
5-29. Two-Wire Ohms Gain Calibration - Front Terminals
5-30. Equipment Required. Resistance Standards of 30 Ohms (+.2%), 300 Ohms (+.02%), 3 Kohms (+.003%),
30 Kohms
(+.001%), 300 Kohms
(4.001%), 3 Mohms
(4.002%) and 30 Mohms (+.009%) are required
to
calibrate the 2-Wire Ohms Function.
2. Set the resistance standard to the full-scale resistance of HP 3457A range selected.
5-7