Wavetek 3000 - Frequency Stability Test; Output Level Accuracy Tests

4.4
FREQUENCY
STABILITY TEST
STABILITY
METHOD
EQUIPMENT
Frequency Counter

HP5300B/5303B
PROCEDURE

1 . Set the Signal Generator controls as follows :
4.5 OUTPUT LEVEL ACCURACY
TESTS
SPECIFICATION
<0 .2 PPM/hour in CW and AM modes
500 Hz/10 minutes in FMx1 mode
The frequency stability is measured
with a frequency counter
at the indicated
time intervals after the 2 hour minimum
warmup .
FREQUENCY selector

520 .000 MHz
MODULATIONMODE

CW
MODULATION FREQ

(Inactive)
MODULATIONFM/AM

(Inactive)
OUTPUT VERNIER

FullyClockwise
OUTPUT step attenautor

+10 dBm
2 .
Connect the 50 ohm input of the frequencycounter to
the Signal Generator RF out connector .
3 .

Allow the Signal Generator to warmup for two hours min-
imum .
Record the frequencycounterreadings to nine-places
at 15-minuteintervals for
a one-hourperiod .

The differ-
ence between
the maximum and minimum readings in the one-
hour period should not exceed 104 Hz .

Record the difference
between the maximum and minimumreadings in Ha on line 5
of the PTR .
4 .

Set the Signal Generator MODULATION
MODE to FMx1,

the
MODULATION
FREQ to VERNIER and adjust the MODULATIONFM/AM
control to 5 kHz .
5 .

After a
one-minute interval record the frequencycounter
readings to nine-places at five-minute intervals for a ten
minuteperiod .

The difference between the maximumandmini-
mum readings
in the ten-minute period should not exceed 500
Hz .

Record the difference between themaximumandminimum
frequencyreadings in Hz on line 6 of
the
PTR .
Power Level

+13 to -137 dBm (1 V
to 0 .03 PV)
PERFORMAKE TESTS
AttenuatorRange

Continuously
adjustablefrom+13 to -137 dBm, in 10 dB steps
and an 11 dB vernier .

Output level is indicated on a front-
panelmetercalibrated in dBm and volts rms .
4- 5