Anritsu 682XXB - Manual (Page 78)

3-9
HARMONIC TEST: RF
OUTPUT SIGNALS FROM
2 TO 20 GHz The following test can be used to verify that the 682XXB/683XXB
meets its harmonic specifications for RF output signals from 2 to
20 GHz (2.2 to 20 GHz for 68XX5B Models). Test record entries are
supplied for harmonics up to a frequency limit of 40 GHz. Additional
harmonic checks may be made at any frequency of interest up to the
RF output frequency limit of the 682XXB/683XXB model being tested.
These additional harmonic checks can be accomplished through the
use of waveguide mixers to extend the frequency range of the spec-
trum analyzer.
Test Setup Connect the equipment, shown in Figure 3-4, as fol-
lows:
1. Connect the 682XXB/683XXB rear panel 10 MHz
REF OUT to the Spectrum Analyzer External
Reference Input.
2. Connect the diplexer and appropriate external
waveguide mixer to the Spectrum Analyzer.
3. Connect the 682XXB/683XXB RF OUTPUT to the
Spectrum Analyzer as shown in Connection A
(682XXB/683XXB
RF OUTPUT to Spectrum
Analyzer RF IN).
3-18 682XXB/683XXB MM
PERFORMANCE HARMONIC TEST: RF OUTPUT
VERIFICATION SIGNALS FROM 2 TO 20 GHz
10 MHz
REF OUT
682XXB / 683XXB
EXT REF
INPUT
Mixer
Diplexer
Connection B
RF OUT
Spectrum Analyzer
RF IN
Connection A
Figure 3-4. Equipment Setup for Harmonic Test: RF Output Signals from 2 to 20 GHz