3 Performance Verification for Analog Analyzer
56 Keysight U8903B Service Guide
Figure 3-7 Function generator to U8903B and digital multimeter for wideband sine wave flatness
verification
2 Configure the digital multimeter as follows:
– Measurement function: AC voltage
– Level Filter: Enable
–NPLC: 10
– Number readings: 1 (with auto sample event)
– Trigger arming: Hold (suspend)
– Trigger mode: Auto
– ACV mode: Synchronous sub-sampled
– Input Range: Refer to “Test record for wideband sine wave flatness verification”
on page 117.
3 Configure the function generator as follows:
– Output load: High-Z load
– Output polarity: Normal
– Waveform function: Sine wave
– Amplitude unit: Vrms
– Amplitude offset: 0 V
4 Configure the U8903B input channel 1 to be tested as follows:
– Connection type: Unbalanced
– Input bandwidth: 1.5 MHz
– Input coupling: DC
– Voltage detector type: RMS
– Trigger source: Immediate
– Measurement function2: AC Voltage
– Sample size: 1048576 for 20 Hz / 524288 for 50 Hz / 262144 for above 50 Hz
Unbalanced input
channel 1 and 2
Function generator
Digital Multimeter
U8903B audio
analyzer
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