Frequency Counter Performance Tests; Required Equipment; Preliminary Steps - Agilent Technologies 3458A Calibration Manual

Frequency Counter Performance Tests

Required Equipment

Preliminary Steps

48 Chapter 4 Performance Verification Tests
Table 6.
OHMF Gain Test
Number
1
2
3
4
5
6
7
10. After all OHMF gain tests have been performed, calculate and record
in the column provided, the difference (absolute value) between the
transfer standard DMM reading and the unit under test reading for
each of the test points.
11. If any of the differences calculated are beyond the specified limits,
refer to Chapter 3 to make adjustments.
12. Disconnect the resistance standard from the 3458A input terminals.
The following equipment is required for testing the frequency counter
performance of the 3458A.
•
Stable frequency source (Agilent 3325A Frequency Synthesizer or
equivalent)
•
Shielded test leads, BNC to dual banana plug (such as
Agilent 11001-60001)
1. Verify that the frequency source is properly warmed up.
2. The 3458A requires a 4-hour warm-up period. If this has not been
done, turn the instrument ON and allow it to warm up before
proceeding.
3. If the instrument self test has not been run, make certain all inputs are
disconnected and execute the TEST function. The display must read
"SELF TEST PASSED".
OHMF Gain Performance Tests
Source and DMM
Range
10 9
100 9
1 k9
10 k9
100 k9
1 M9
10 M9
Source Output
10 9
100 9
1 k9
10 k9
100 k9
1 M9
10 M9