Rohde & Schwarz SME02 - Reference Frequency; Harmonics Suppression;Subharmonics

Test Procedure SME
1038.6002.02 5.10 E-13
5.2.4 Reference Frequency
Caution: Allow the SME to warm up for at least 2 hours before measurement.
Test equipment
Frequency counter (Section 5.1, item 1)
Test setup Connect a calibrated frequency counter to output REF (socket at the
rear).
Measurement
À Measure frequency.
Relative frequency error in the rated temperature range with
standard.............................<1E-6, per year of service period +2E-6
with option SM-B1..............<1E-9, per year of service period +5E-8
5.2.5 Harmonics Suppression/Subharmonics
Note: As subharmonics occur at frequencies >1.5 GHz, only SME03 and SME06 have to be tested
for subharmonics.
Test equipment
Spectrum analyzer (Section 5.1, item 2)
Test setup
Connect the spectrum analyzer to the RF output of the SME.
Measurement
À Settings at the SME02/03E/03/06
- Test frequencies 5 kHz to 1500/2200/3000/6000 MHz,
unmodulated
- Level 10 dBm or 13 dBm.
À Check the harmonics suppression using the spectrum analyzer.
Make sure that the spectrum analyzer is not overdriven.
Harmonics level
at 10 dBm ................................................................max. -30 dBc
at 13 dBm .............................................................max. . - 26 dBc
À Measure the subharmonics using a spectrum analyzer. Make sure
not to overdrive the spectrum analyzer (only for SME03/06).
Level of subharmonics at
Frequency settings >1.5 GHz.......................................max. -40 dBc
Frequency settings >3.0 GHz.......................................max. -34 dBc