Wavetek 3000 - Page 44

PERFORMANCE
TESTS
METHOD
EQUIPMENT
Frequency Counter
PROCEDURE
A frequencycounter
is
used to measure frequency accuracy .
In CW and AM modes allfrequencies between 1 and 520 MHz are
derived from
a single crystal-controlled oscillator . The
Signal Generatorwill
be tested at one
CW
frequency to
verify
that the crystal-controlled oscillator operates within
specified limits .
Frequencyaccuracyin
FM
modesdepends upon the
FM
system
accuracy . The FM systemaccuracy includes the accuracy of
a voltage-controlledoscillator
in addition to the
accuracy
of the crystal-controlledoscillator . Frequencyaccuracy
in FMx1 and FMx100 modes will be measured in VERNIER posi-
tionwith
a
DC modulation signalequal to the peak
of maxi-
mum
sinusoidal modulation signals .
HP5300B/5303B
4 .
Set the Signal Generator
FREQUENCY selector
MODULATION MODE
MODULATION FREQ
MODULATION FM/AM
OUTPUT VERNIER
OUTPUT step attenuator
2 .

Connect the 50 ohm input
of
the
Signal GeneratorRF out connector .
3 . The counter should read between 39,999
.60 and
kHz . Record the counter readingto seven places
of
the
PTR .
Set the Signal Generator
FREQUENCY
selector
MODULATION MODE
MODULATION FREQ
MODULATION FM/AM
controls as follows :
040 .000 MHz
CW
(Inactive in CW MODE)
(Inactive in CW MODE)
FullyClockwise
+10dBm
frequencycounter
controls as follows :
001 .000 MHz
FMx1
VERNIER
5 kHz
6 . Set the Signal Generator MODULATION MODE to FMx100
.
to the
40,000 .40
on line 2
5 . The frequency counter should readbetween
994 .99
and
1,015 .01 kHz .
Record the counterreading to 6 places on line
3 of the PTR .
7
.
The frequency counter should read between 1,454 .99
and
1,545 .01 kHz . Record the counter reading to 6 placeson
line 4 of the PTR .