Performance Tests
Model 8642A/B
PERFORMANCE TESTS
4-8. RESIDUALS TESTS
SPECIFICATION:
Electrical Characteristics
Residual AM
(0.3 to 3 kHz BW)
Residual FM
(0.3 to 3 kHz BW)
Residual FM
(0.05 to 15 kHz BW)
Performance Limits
<0.01%
AM rms
<5.0 Hz rms
<2.0
<1.2
<1.0
<3.5
<9.0 Hz rms
<5.0
<2.0
<1.2
<5.0
Conditions
band 10
band 9
band 8
band 1-7
band HET
band 10
band 9
band 8
band 1-7
band HET
DESCRIPTION: Residuals are demodulated by the measuring receiver using either AM or
FM mode. FM Residual levels are measured in areas where the measuring
receiver can resolve the measured performance of the HP 8642 under test
(in a 0.3 - 3 kHz Bandwidth). If the HP 8642 has been repaired, the
OPTIONAL RESIDUAL FM TEST (4-18), should be performed in addition
to this test. Also, if the Residual FM Test fails, it will be necessary to run
4-18 at the test points given here in 4-8 to determine if the noise source is
the measuring receiver LO or the HP 8642.
anal In
□ D □ an
□□□□D
□ □ an
□ □ on rqnnnn ^~. □
HP 8642A/B
SYNTHESIZED
olUNAL UtNtHAIUH
10
MHz
OUTPUT
Hf
OUTPUT
REF
EXT
INPUT
SENSOR
MODULE
MEASURING
RECEIVER
BF
INPUT
Figure 4-4. Residuals Test Setup
EQUIPMENT: Measuring Receiver HP8902A
Sensor Module HP11722A
4-16
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