1. Performance Tests – Verifying Specifications
5071A Complete Performance Tests
10
5071A Complete Performance Tests
Before performing the following tests, the 5071A under test must have
been in operation for at least 30 minutes. If you are initially starting the
5071A, follow the instructions in the “Power-On Self Tests” procedure under
the Operational Verification Test on page 7.
Test 1 — Output Signals: Harmonic Distortion
and Spurious Signals Check
A. Harmonic Distortion Check for the 5 and 10 MHz Outputs
Harmonics on the 10 MHz and 5 MHz output signals must be more than 40
dBc below the fundamental. To perform this check, a spectrum analyzer is
tuned to the fundamental frequency and an amplitude reference is
established. The output frequency spectrum is then examined to determine
fundamental-to-sideband amplitude relationship at harmonic points of the
fundamental.
Equipment
HP/Agilent 3585B Spectrum Analyzer
Setup
Figure 1-3. Harmonic Distortion Test Setup
Specifications
Verify all harmonics are < 40 dBc with respect to the fundamental
frequency.
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