Specification—2465B/2467B Service
Table 1-1 (cont)
Characteristics Performance Requirements
The algorithms used for the measurements result in the
following equation for the total jitter error that must be applied
to the accuracy specifications.
Jitter Error =
2 * first point jitter
+ 2 * second point jitter.
Offset Error
Offset error is introduced when the trigger level is not set
exactly at the expected points. This misplacement of the trigger
level applied to any non-infinite slew rate produces a timing
error. The magnitude of the error is given by:
Offset Error
offset
input slew rate
Frequency measurements do not suffer from offset errors since
measurements are made with the same trigger level and slope,
so no offset is introduced.
All other timing measurements suffer from offset errors.
The slew rates used to calculate offset errors must be measured
at the first and second measurement points given in the
Measurement Points table.
Offset error is calculated as:
Offset Error =
0.2 div
+
First Point slew rate
0.2 div
Second Point slew rate
If a time interval measurement is made using Volts mode, the
offset at each measurement point is:
0.2 div + 5% of measurement point voltage converted to
divisions.
1-13
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