Dc Fm Frequency Error Performance Test - HP 8647A Operation And Service Manual

DC FM Frequency Error Performance Test
DC FM Frequency
Error Performance
Test
Connect the Test
Equipment
HP 8647A
under
test
0
LA
ocoo
0
0
o o o o f i
0 0
coou
ptestl .dm
Measuring Receiver
Figure 8-10. DC FM Frequency Error Equipment Setup
Configure the
Measuring Receiver
Configure the HP
86478
Measure Deviations
1. Reset
2. Frequency mode
3. Special function 7.1. Press
0 0 0
m.
1.
Set the amplitude; press
@ IdBo_).
2. Select external DC FM; press
(FM) (EXTI.
3. Turn the RF output on; press
( - 1 .
1.
Set the frequencies and deviations shown in the test record.
2.
For each data point, measure the carrier frequency with F M turned
3. For each data point, measure the carrier frequency with F M turned
4. Compute the error (difference) and compare
it
to the corresponding
off,
press
CMOD
ON/OFF].
on, press
MOD
ON/OFF].
limits in the test record.
8.1 6 Performance
Tests