Keysight U8903B, Руководство по обслуживанию

Страница: 25 / 165

Performance Verification for Analog Generator 2
Keysight U8903B Service Guide 25
Performance Verification
DC accuracy verification
This test verifies the accuracy of the DC 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 2-1 .
The BNC-to-banana jack adapter is used for this connection. Preset both the U8903B
and digital multimeters.
Figure 2-1 U8903B to digital multimeter connections for DC accuracy verification
2 Configure the digital multimeter as follows:
– Measurement function: DC voltage
– Level filter: Enabled
– NPLC: 10
– Number readings: 1 (with auto sample event)
– Trigger arming: Hold (suspend)
– Trigger mode: Auto
– Range: Refer to “ Test record for DC accuracy verification ” on page 98
3 Configure the U8903B output channels to be tested as follows:
– Connection type: Unbalanced
– Output impedance: 600 Ω
Table 2-1 DC accuracy specification
DC accuracy specification Equipment used
± 1.0% 2 × Digital multimeter
Unbalanced output
channel 1
U8903B audio
analyzer
Digital multimeter 1
Digital multimeter 2
Unbalanced output
channel 2