Keysight U8903B - Page 70

4 Performance Verification for Digital Generator and Digital Analyzer
70 Keysight U8903B Service Guide
7 Set the DSO8064A oscilloscope to measure the amplitude of Function 1 and record the
measurement as V
measure
.
8 Compute the level accuracy using the following equation.
Level Accuracy (dB) = 20 × Log (V
measure
/ V
DUT
)
9 Repeat step 5 to step 8 for the rest of the V
DUT
as given in “Test record for balanced
output level accuracy verification” on page 141 to complete the verification of the
different voltages.
10 Repeat step 4 to step 9 for the rest of the F
SR
as given in “Test record for balanced
output level accuracy verification” on page 141 to complete the verification of the
different sampling rates.
1.8 0.15 2.4
2.0 0.175 2.8
2.3 0.195 3.12
2,.5 0.21 3.36
2.8 0.235 3.76
30.25 4
3.3 0.275 4.4
3.5 0.295 4.72
3.8 0.32 5.12
4 0.335 5.36
4.3 0.36 5.76
4.5 0.375 6
4.8 0.4 6.4
5.1 0.425 6.8
Table 4-4 Channel 1 and channel 2 vertical scale and vertical scale range (continued)
V
DUT
(V)
CH1 and CH2 voltage per d ivision (V) Function 1 vertical scale range (V)