Keysight U8903B, Руководство по обслуживанию

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2 Performance Verification for Analog Generator
34 Keysight U8903B Service Guide
Square wave amplitude accuracy verification
This test verifies the amplitude accuracy of the square wave signal generated by the
U8903B over a range of amplitudes using two digital multimeters to ensure that it is within
the published specification.
1 Connect the U8903B Unbalanced output channel 1 to the first digital multimeter and
Unbalanced output channel 2 to the second digital multimeter as shown in
Figure 2-6 .
Preset both the U8903B and digital multimeters.
Figure 2-6 U8903B to digital multimeter connections for square wave amplitude accuracy verification
2 Configure the digital multimeters as follows:
– Measurement function: AC voltage
– Level filter: Enabled
– NPLC: 10
– Number readings: 1 (with auto sample event)
– Trigger arming: Hold (suspend)
– Trigger mode: Auto
– ACV Mode: Synchronous Sub-sampled
– Range: Refer to “ Test record for square wave amplitude accuracy verification ” on
page 104
3 Configure the U8903B output channels to be tested as follows:
Table 2-6 Square wave amplitude accuracy specification
Amplitude accuracy specification Equipment used
±
1% (for 1 kHz) 2
×
Digital multimeter
Unbalanced output
channel 1
U8903B audio
analyzer
Digital multimeter 1
Digital multimeter 2
Unbalanced output
channel 2