Ceyear 4041 Series, User Manual

Page: 179 / 203

Chapter XI Performance Characteristics Test
167
Span ............................................................................................................................................................ 1 kHz
Resolution bandwidth ................................................................................................................................. 10 Hz
4) Set the frequency of 1464C to 50 MHz and the amplitude to 6 dBm, with the amplitude step of 0.05 dB.
5) Press
【
Peak
】
on the spectrum analyzer.
6) Press
【
Ampt
】
on 1464C and adjust the amplitude with
【 ↑ 】
and
【 ↓ 】
keys till the spectrum analyzer
accurately reads 0 dBm

0.05 dB. Set the amplitude step to 10 dB.
7) Press
【
Peak
】 【
Marker
】
[Detla] on the spectrum analyzer.
8) Adjust the output signal amplitude of 1464C to reduce the power meter reading by 10 dB

0.05 dB.
9) Carry out the following calculation (reading of the differential marker amplitude of the spectrum analyzer -
power change value of the signal source); record the calculated data in the corresponding test item of the
4041 Series Spectrum Analyzer Record Sheet , and repeat steps 8-9.
11.16 Total level uncertainty
Description: The difference between the output power reading of the test synthesized signal generator of the
power meter and the output reading of the test signal generator of the spectrum analyzer is the total level
uncertainty. The indicator will be affected by the indicator of the front end programmed step attenuator and the
frequency response indicator of microwave & millimeter-wave variable frequency channel, and considering this,
the amplitude accuracy specifications of different frequency points of different attenuation test setup and when the
attenuation is 0dB, so as to ensure the comprehensiveness of the indicator test.
A) Testing equipment
Synthesized signal generator ................................................................................................................... 1464C
Power meter ......................................................................................................................................... ML2437A
Power sensor ........................................................................................................................................ MA2445D
Power divider .............................................................................................................................................. 81313
b) Adapter
2.4 mm (f)-2.4 mm (f) adapter * 2
c) Cable
BNC (m-m) cable * 1
2.4 mm (m-m) cable * 1
d) Test steps