Impulse And Resolution Bandwidths - HP 8566B Installation And Verification Manual

6. Impulse and
Resolution
Bandwidths
(Option 462
Impulse
Bandwidth)
Note
Specification
Related Performance
Description
5-l 6 Operation Verification
This test is for Option 462 instruments only. For standard instruments,
perform the test on the preceding page.
Bandwidth
Amplitude
Selectivity
Impulse & Resolution Bandwidth Accuracy Test
Tests
Impulse & Resolution Bandwidth Selectivity Test
Impulse & Resolution Bandwidth Switching Uncertainty Test
A source outputting pulsed RF signals is connected to the spectrum
analyzer input. The analyzer steps through the bandwidths from
3 MHz to 1 kHz, and the controller measures the frequency of the
impulse response for each bandwidth. Next, a CW signal is connected
to the spectrum analyzer input. The analyzer steps through all
bandwidths from 3 MHz to 10 Hz, centers the signal, sets the signal
peak near the reference level, and measures the frequency of the 6
by determining the difference in frequency between the 6 dB points.
Last, the analyzer steps through the bandwidths and measures the
60 dB points for each bandwidth. The 60 dB bandwidth is calculated
for each bandwidth. The selectivity of each bandwidth is then
calculated by dividing the 60 dB bandwidth by the 6 dB bandwidth
for each filter.
3 MHz; f20%
1 MHz to 1 kHz; f20%
300 Hz to 10 Hz; +50%, -0%
3 MHz; fl.O dB
1 MHz to 100 Hz; f0.5 dB
30 Hz; f0.8 dB
10 Hz; f2.0 dB
(60 dB/6 dB Ratio)
3 MHz to 100 kHz; <ll:l
30 kHz to 30 kHz; <8:1
10 Hz; ~100 Hz separation of 60 dB points