Keysight Technologies Infiniium MXR Series, User Manual

Page: 75 / 116

Testing Performance
6
Keysight Infiniium MXR-Series Real-Time Oscilloscopes User's Guide 75
which version of the test you are on). Fill in the Verror- column by using the
following equation:
Verror- = VDMM- - Vscope-
Verror- must be within the limits specified by the corresponding Offset
Accuracy Limit listed in the table.
24
Repeat step 17b and step 18 to step 23 for the remaining channel 1 vertical
scale settings in Table 7 or Table 8 (depending on which version of the test you
are performing). For each measurement, set both the DC supply voltage
(External Supply Setting) and the Channel offset voltage to the positive
External Supply Setting value and then to the negative External Supply Setting
value in the External Supply Setting column of the Offset Accuracy Test table
for each of the vertical scale settings.
25
Move the Tee connector to the next channel input and repeat step 17 to step 24
for the remaining channels.
26
Repeat step 16 through step 25 for the 1 M Ω channel input impedance setting.
This means you should follow the directions exactly as stated except in step 18
you will select the 1 M Ω button instead of the 50 Ω one and all values will be
entered in Table 8 of the Performance Test Record rather than Table 7 . Also be
sure to use the external supply settings and offset values from the 1 M Ω version
of the Offset Accuracy Test table as they are different than the 50 Ω version.