HP 3457A Service Manual page 84

Operational Verification Tests
2-Wire Ohms Operational Verification Tests Cont'd
Table 4-26. 2-Wire Ohms Gain Test Limits
4-Wire Ohms Operational Verification Tests
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SENSE INPUT
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Figure 4-17. 4-Wire Ohms Operational Verification Test Connections
4-84. 4-Wire Ohms Function - Offset Test
4-85. Equipment Required. A low thermal short (copper wire) is required for this procedure.
2. Short the front panel input terminals of the HP 3457A as shown in Figure 4-17.
3. Use the Test Record to record the offset readings of the 3 Kohm, 30 Kohm and 300 Kohm ranges.
5. Remove the short from the front panel input terminals.
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