Keysight U8903B, Service Manual

Page: 33 / 165

Performance Verification for Analog Generator 2
Keysight U8903B Service Guide 33
– Edge trigger slope: Positive
– Channel 1 offset: 0
– Channel 1 vertical axis unit: Volt
– Channel 2 offset: 0
– Channel 2 vertical axis unit: Volt
3 Configure the U8903B output channels to be tested as follows:
– Connection type: Unbalanced
– Output impedance: 600 Ω
– Output grounding configuration: Floating ground
– Waveform: Square
– Output state: ON
4 Set the U8903B output channel 1 and 2 to be tested to produce a square wave with
amplitude of V
p-p
as given in the “ Test record for square wave rise time verification ”
on page 103 .
5 Set the U8903B output channel 1 and 2 with the frequency of f
DUT
as given in the “ Test
record for square wave rise time verification ” on page 103 .
6 Configure the digital oscilloscope for measurement channel 1 as follows:
– Adjacent channel display (channel 2): OFF
– Measurement channel display (channel 1): ON
– Edge trigger source: Measurement channel (channel 1)
– Source for measurement: Measurement channel (channel 1)
– Time scale (time per division): Refer to “ Test record for square wave rise time
verification ” on page 103
– Measured channel vertical scale (volts per division): Refer to “ Test record for
square wave rise time verification ” on page 103
7 Enable the U8903B output channel 1.
8 Record the rise time measurement on the digital oscilloscope, t
rise
for channel 1 in the
“ Test record for square wave rise time verification ” on page 103 .
9 Repeat step 6 to step 8 for the output channel 2.
10 Repeat step 5 to step 9 for the rest of the frequency f
DUT
values.
11 Repeat step 4 to step 10 for the rest of the amplitude V
DUT
values to complete the
verification of the U8903B output channel to be tested.
12 Compare the recorded rise time measurement values to the specification. If the test
fails, adjustment will need to be carried out accordingly.