Chapter 1 Performance Tests

HP 53131A/132A/181A Operational Verification

3Press Channel 1 50Ω/1MΩ key.

The LED turns on, indicating a 50Ω input impedance for Channel 1.

4Press Channel 1 DC/AC key.

The LED turns on, indicating DC input coupling for Channel 1.

5Verify the DVM reads 51.1Ω ± 3Ω.

6For HP 53131A/132A, mark Pass or Fail in the HP 53131A/132A Performance Test Record on page 1-41,Test 5a.

6’ For HP 53181A, mark Pass or Fail in the HP 53181A Performance Test Record on page 1-71,Test 4a.

7Press Channel 1 50Ω/1MΩ key.

The LED turns off, indicating a 1 MΩ input impedance for Channel 1.

8Verify the DVM reads approximately 1.0000000 MOHM.

9For HP 53131A/132A, mark Pass or Fail in the HP 53131A/132A Performance Test Record on page 1-41,Test 5b.

9’ For HP 53181A, mark Pass or Fail in the HP 53181A Performance Test Record on page 1-71,Test 4b.

10Repeat steps 3 through 9 for Channel 2 for the HP 53131A/132A Counter ONLY since the HP 53181A Counter does not have a standard Channel 2.

11For HP 53131A/132A, mark Pass or Fail in the HP 53131A/132A Performance Test Record on page 1-41,Tests 6a and 6b.

12Disconnect the test setup.

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Assembly-Level Service Guide

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