HP 8642A

Performance Tests
Model 8642A/B
PERFORMANCE TESTS
4-6. HARMONICS TESTS
SPECIFICA TION:
Electrical Characteristics Performance Limits
Conditions
Harmonics -20 dBc
~+16 dBm
-25 dBc
~+10 dBm, band 10
-30 dBc
~+10 dBm, band HET-9
Sub-harmonics
none
band HET-9
DESCRIPTION:
EQUIPMENT:
PROCEDURE:
4-12
-45 dBc
band10
The HP 8642's frequency is set to values where harmonic performance
problems are most likely to be observed. The measuring receiver is used to
measure the power level at the harmonic or sub-harmonic frequency. To do
this, the measuring receiver must have been calibrated over the full power
measurement range at that frequency. Doing the Level Accuracy
Performance Test automatically does this.
For troubleshooting purposes or characterization of other RF frequencies, a
spectrum analyzer may be used.
o 0
01
10
10 ~HI REF EXT
OUTPUT INPUT
MEASURING
DOD DO DODOD 0 0 DO
00 ~o~ §§ §§gg§ 0 ~
RECEIVER
HP 8642MB
RF
r
OUTPUT
INPUT
SYNTHESIZED
I SENSOR I
SIGNAL GENERATOR
I MODULE I
Figure 4- 2. Harmonics Test Setup
Measuring Receiver ................... HP8902A
Sensor Module ........................ HP 11722A
lao
Setup
Connect the instruments as shown in Figure 4- 2. Preset the
instruments. Set the measuring receiver to tuned RF Level mode. If
the Level Accuracy Performance Test has just been done with the
same measuring receiver then continue with step 2. If Level
Accuracy has not yet been done or you have changed measuring
receivers
then calibration is required. In this case, complete step I b
before continuing with step 2.