Agilent Technologies E8285A Manual page 166

Performance Tests
RF Generator Spurious Spectral Purity Performance Test 7
3. Set the Test Set's RF generator to the frequencies shown in the Performance
166
Test Record (PTR) and measure the level of the spurious signals at the
frequencies shown. For each measurement convert the harmonic level to dB
below the fundamental (dBc) and compare the computed levels to the limits.
S:\agilent\e8285\ALR\Book\chapters\perf_test.fm