Wavetek 3000 Instruction Manual page 44

PERFORMANCE TESTS
METHOD
EQUIPMENT
Frequency Counter
PROCEDURE
A frequency counter 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 Generator will be tested at one CW frequency to verify
that the crystal-controlled oscillator operates within
specified limits .
Frequency
accuracy in FM modes depends upon the FM system
accuracy . The FM system accuracy includes the accuracy of
a voltage-controlled oscillator in addition to the accuracy
of the crystal-controlled oscillator . Frequency accuracy
in FMx1 and FMx100 modes will be measured in VERNIER posi-
tion with a DC modulation signal equal 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 Generator RF out connector .
3 .
The counter should read between 39,999 .60 and
kHz . Record the counter reading to 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)
Fully Clockwise
+10 dBm
frequency counter
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 read between 994 .99 and
1,015 .01 kHz .
Record the counter reading 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 places on
line 4 of the PTR .