Keysight N2804, Руководство пользователя

Страница: 33 / 40

Performance Verification
N2804/5A Differential Probes User’s Guide 33
12 On the oscilloscope, note the measured DC amplitude for the square wave input to
the probe. For N2804A probes, divide this value by 100 and record the voltage
below as the probe’s output (V
probe out
). For N2805A probes, divide the measured
value by 50.
V
probe out
:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ____________ mV
13 Calculate the probe gain accuracy. V cal was recorded in step 5 and V
probe out
was
recorded in step 12 .
14 Verify that the probe gain accuracy is ±1% + scope gain accuracy. Record the test
results as DC Differential Gain Accuracy in Table 10 on page 34.
Bandwidth
15 Disable the 9500B’s output.
16 Connect the 50 W BNC feed through adapter to the N9500B’s CH1 active head.
17 Attach the BNC (f)-to-banana post adapter to the BNC feed through adapter.
18 Attach the differential probe input leads by clipping the alligator clamp to the BNC
adapter banana post.
19 Enable the 9500B’s output.
20 Configure the oscilloscope to the following settings:
Amplitude Scale (Channel 1): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .500 mV/div
Time Scale: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 ns/div
Acquisition mode: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Peak Detect
21 Center the trace on the oscilloscope.
22 On the 9500B, configure CH1 to the following settings:
Waveform:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . sine wave
Load: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 M W
Amplitude:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3V pk-pk
Frequency (N2804A): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300 MHz
Frequency (N2805A): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200 MHz
Probe Gain Accuracy (%)
V
probe out
V
cal
–
V
cal
----------------------------------------
100
×
=