HP 8642A - Page 281

Model 8642A/B
Performance Tests
PERFORMANCE TESTS
4-18. OPTIONAL RESIDUAL FM TEST
SPECIFICATION:
DESCRIPTION:
Electrical Characteristics
Residual FM
(0.3 to 3 kHz BW)
Residual FM
(0.05 to 15 kHz BW)
Performance Limits
<5 Hz rms
<2
<1.2
<1
<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
The 4-8. Residuals Test gives 99% confidence that the HP 8642 is passing
all its Residual FM specifications. However, if a measurement bandwidth of
50 Hz to 15 kHz is required, an external LO must be provided (an 8902A
measuring receiver must be equipped with option 003 to allow this). The
LO must have residual FM lower than or equal to the HP 8642.
□ a □ | 1 □
□ □ □ □□ DDPDD an D[
~ - an DDDDD ( ) r\ r
HP-8642A/B
SYNTHESIZED
SIGNAL GENERATOR
SIGNAL
GENERATOR
1
RF
OUTPUT
SENSOR
MODULE
RF
OUTPUT
EXT. L.O.
INPUT
MEASURING
RECEIVER
RF
INPUT
Figure 4-17. Residual Test Setup
EQUIPMENT:
Measuring Receiver HP 8902A opt 003
Sensor Module HP11722A
LO HP 8662A
4-49