4
Performance Verification Tests
76
Keysight 3458A Calibration Manual
Frequency Counter Performance Tests
Required equipment
The following equipment is required for testing the frequency counter
performance of the 3458A.
– Stable frequency source (Keysight 3325A Frequency Synthesizer or equivalent)
– Shielded test leads, BNC to dual banana plug (such as Keysight 11001-60001)
Preliminary steps
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”.
4
Configure the DMM under test as follows:
– FREQ
– Trig SGL
– FSOURCE ACDCV
– LEVEL 0,DC
Frequency counter accuracy test
1
Execute FSOURCE ACDCV (specifies the type of signal to be used as the input
signal for frequency measurement).
2
Set the Frequency Standard to output a 1 volt p-p, 1 Hz sine-wave. Record the
exact Frequency Standard Value on the
Test Card.
Connect the output of the Frequency Standard to the HI and LO input
terminals of the 3458A under test.
3
Execute Trig and record the Unit Under Test Reading on the
Test Card.
Содержание 3458A
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