Chapter 1 Performance Tests
HP 53131A/132A/181A Operational Verification
Assembly-Level Service Guide 1-9
1
3 Press Channel 1 50
Ω
/1M
Ω
key.
The LED turns on, indicating a 50
Ω
input impedance for Channel 1.
4 Press Channel 1 DC/AC key.
The LED turns on, indicating DC input coupling for Channel 1.
5 Verify the DVM reads 51.1
Ω
± 3
Ω
.
6 For 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.
7 Press Channel 1 50
Ω
/1M
Ω
key.
The LED turns off, indicating a 1 M
Ω
input impedance for Channel 1.
8 Verify the DVM reads approximately 1.0000000 MOHM.
9 For 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.
10 Repeat 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.
11 For HP 53131A/132A, mark Pass or Fail in the HP 53131A/132A
Performance Test Record on page 1-41, Tests 6a and 6b.
12 Disconnect the test setup.
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