Section 7 Performance Test
7-8
.
[Notes on Testing]
When using signal generator 68200B to test burst width measurement performance, the accuracy of pulse modulation is
±10 ns, and the precision ratio against the accuracy ±20 ns of the unit’s burst width measurement is 2.0. In this case, the
tolerance coefficient (gard band coefficient) is 0.935, which means that the pass-fail decision standard when using signal
generator 68200B is as follows :
(±20 ns ± time base accuracy × measurement pulse width ± trigger error) × 0.935
Table 7-2 shows the main precision ratios and tolerance coefficients.
Table 7-2 Main Precision Ratios and Tolerance Coefficients
Precision Ratio
4.0
3.5
3.0
2.5
2.0
1.5
1.0
Tolerance coefficient
1.00
0.990
0.975
0.960
0.935
0.895
0.825
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