Incidental Fm Test; Maximum Rf Output Test - HP 608E Operating And Service Manual

Model 608E/ F
5-16. INCIDENTAL FM TEST.
a. Connect Signal generator in test setup illustrated
in Figure 5-4.
b. Set FREQUENCY RANGE switch to range A.
c. Adjust frequency control for MEGACYCLES
dial setting of 10 MHz.
d. Adjust RF OUTPUT andAMPLTRIMMER con-
trols for a +7 dBm (ATTENUATOR CALIBRATED)
indication on RF OUTPUT meter.
e. Set MODULATION switch to INT 1000
posi-
tion.
Section
V
5-17.
MAXIMUM
RF OUTPUT TEST.
a. Connect signal generator in test setup illustrated
in Figure 5-5.
b. Set FREQUENCY RANGE switch to range
A.
c. Adjust RF OUTPUT control to the full clockwise
position.
d. Adjust attenuator control to the full clockwise
position.
f. Adjust MODULATION control for a 50% indica-
tion on PERCENT MODULATION meter.
g. Adjust attenuator control for output of 0 dEmo
h. Readjust frequency control for a 50 kHz indica·
tion on frequency meter on 100 kHz range.
i. Measure peak-to-peak amplitude of signal dis-
played on oscilloscope. Measurement should not ex-
ceed 2.0 mY peak-to-peak (200 Hz peak-to-peak
maximum deviation).
60BE/F
SIGNAL
GENERATOR
o
0
8491,0,
10-OB
ATTENUo\TOfl
478A
T~ERMISTOR
MOUNT
432:" "'
...
METER
j. Repeat steps h. ::.;-.d i.
:.t the FREQUENCY
RANGE and MEGACYCLES dial settings
listed
with
applicable oscUloscope indications in the following
chart. Figure 5-5. RF Output Test Setup
•
OSCILLOSCOPE INDICATION
FREQ. RANGE FREQ INCIDENTAL FM
MAXIMUM DEY
B
30
MHz
6 mY pk-pk 600
Hz pk-pk
C 70 MHz
14 mY pk-pk 1400 Hz pk-pk
D 150 MHz
20 mY pk-pk 2000 Hz pk-pk
E 300 MHz
20 mY pk-pk 2000 Hz pk-pk
E 400 MHz
20 mV pk-pk
2000 Hz pk-pk
E 420 MHz
20 mV pk-pk 2000 Hz pk-pk
E
450 MHz (608E) 20 mY pk-pk 2000 Hz pk-pk
E
455 MHz (608F) 20 mY pk-pk 2000 Hz pk-pk
E
480 MHz (608E)
20 mV pk-pk
2000 Hz pk-pk
5-7