HP 8642A - Page 299

Model 8642A/B Performance Tests
PERFORMANCE TESTS
4-18. OPTIONAL RESIDUAL FM TEST
SPECIFICATION:
DESCRIPTION:
EQUIPMENT:
Electrica I Cha racteristics Performance limits Conditions
Residual FM <5 Hz rms band 10
(0.3 to 3 kHz BW) <2
band 9
<1.2 band 8
<1
band 1-7
<3.5
band HET
Residual FM <9.0 Hz rms band 10
(0.05 to 15 kHz
BW) <5.0 band 9
<2.0
band 8
<1.2 band 1-7
<5.0
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 residua.! FM lower than or equal to the HP 8642.
RF
SIGNAL
OUTPUT
GENERATOR
EXT. l.O
INPUT
DOC I
10
MEASURING
[l n n DO DOODD 0 0 DO
00 ~o~ §§ §§§§§ 0 ~
RECEIVER
HP 8642A1B
RF
RF
SYNTHESIZED
OUT PUT
INPUT
I SENSOR I
SIGNAL GENERATOR
I MODULE I
Figure 4- 17. Residual Test Setup
Measuring Receiver ...................... HP 8902A opt 003
Sensor Module ............................ HP 11722A
LO ........................................ HP 8662A
4-49