Keysight U8903B, Руководство по обслуживанию

Страница: 58 / 165

3 Performance Verification for Analog Analyzer
58 Keysight U8903B Service Guide
2 Connect the function generator outputs to the frequency counter input channel 1 and
2, and to the U8903B unbalanced input channel 1 and 2 as shown in
Figure 3-8 . Preset
the U8903B, function generator, and frequency counter.
Figure 3-8 Function generator to frequency counter and U8903B connection for wideband frequency
accuracy verification
3 Configure the function generator output channel as follows:
– Output load: High-Z load
– Output polarity: Normal
– Waveform function: Sine wave
– Amplitude unit = Vrms
– Amplitude offset = 0 V
4 Configure the frequency counter input channels as follows:
– If frequency counter model is 53220A, set SCPI language mode: 53132A
– Impedance: 1 M Ω
– Low pass filter: ON (for frequency <100 kHz)
– Input coupling: DC
– Level at center of hysteresis window: 0 V
– Trigger level percentage of signal peak-to-peak range: 50%
– Reference timebase: Internal reference
– Measurement function: Channel 1 frequency
– Frequency measurement start arm mode: Immediate
– Frequency measurement stop arm mode: Timer
5 Configure the U8903B input channels to be tested as follows:
– Connection type: Unbalanced
– Input bandwidth: 90 kHz
Unbalanced input
channel 1
Function generator
Frequency counter
Unbalanced input
channel 2
U8903B audio
analyzer