Wavetek 3000 - Flatness Test

PERFORMANCE TESTS
4.5.2 Flatness Test
EQUIPMENT
4-8
PowerMeter

HP435A/8481A
and Sensor
3 .
Adjust the Signal GeneratorOUTPUTVERNIER for a +3
dBm
OUTPUTmeterreading . Observe the power meterreading and
make a note
of theOUTPUTmeter error to the nearest 0 .05
dB (4 division) . Continue to adjust the OUTPUT VERNIER
for
OUTPUTmeter reading increments of 1 dB between+3 and -7
dBm, and note
the OUTPUTmeter error at each reading .

As
the test
progresses make a note of the maximum OUTPUTmeter
error to the nearest 0 .05
dB .

The allowable error is ±0 .5
dB . Record the maximumOUTPUTmeter error on
line
7
of the
PTR .
4 .

Set the Signal GeneratorOUTPUT step
attenuatorto 0 dBm
and repeat step 3 above .

Record the maximum
OUTPUTmeter
error on line 8 of thePTR .
PROCEDURE

1 . Set the Signal
Generator controls as follows :
FREQUENCY selector

050 .000 MHz
MODULATION
MODE

CW
MODULATION
FREQ

(Inactive in CW MODE)
MODULATIONFM/AM

(Inactive in CW MODE)
OUTPUTVERNIER

Fully Clockwise
OUTPUT
step attenuator

+10 dBm
2 . Set thepower
meter to the +15 dBm range .

Connect the
powersensor to theSignalGenerator RF out
connector .
3 .
Adjustthe Signal GeneratorOUTPUT VERNIER for a +12
dBm
power
meterreading .
4 . Set the Signal GeneratorFREQUENCYselector in 10 MHz
steps between 10 and520 MHz and observe the maximum
change
in the power meter readingsfrom the
+12
dBmreading
in
step 3 . The maximum allowable change is ±0 .75 dB
. Record
the maximum change to thenearest 0 .05 dB (k
division) on
line 9 of the PTR .
5 .
Set the Signal Generator FREQUENCY selector to 050 .000
MHz and adjust the OUTPUTVERNIER for a +3 dBm powermeter
reading .
6 . Repeat step 4 above
exceptobserve the maximum change
in the power meter readings
from the
+3
dBm reading in step
5 . Recordthe maximum change from the
+3 dBm reading to the
nearest 0 .05 dB on line 10 of the
PTR .