Bnc 1105 Universal Counter Manual de usuario descargar pdf (Pagina 99)

9999

A.1 RMS Resolution

Rms (Typical) 100Hz 1KHz 10KHz 100KHz

1105 (10ms)

0.000000842 0.000003438 0.000013896 0.000067275

1105 (100ms)

0.0000001 0.000000828 0.000005093 0.000011508

1105 (1s)

0.000000001 0.000000098 0.000001212 0.000004869

Rms (Typical)

1MHz 10MHz 100MHz 1GHz

1105 (10ms)

0.000677504 0.004830870 0.042107484 0.611551072

1105 (100ms)

0.000101040 0.002272900 0.006344503 0.055991810

1105 (1s)

0.000058166 0.000469601 0.001275299 0.002602258

The graph doesn’t include the effects of trigger error. To place an upper bound on the added effect

of this error term, it’s necessary to determine the frequency error from the proper graph and add a

trigger error term as the following equation:

External source and input amplifier noise might advance or postpone the trigger points that define

the start and end of a measurement. The resulting timing uncertainty is a function of the slew rate

of the signal and the amplitude of spurious noise spikes (relative to the input hysteresis band).

The (rms) trigger error relative to a single trigger point is:

1 2 ... 94 95 96 97 98 99 100 101 102 103 104 ... 196 197

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Bnc 1105 Universal Counter Manual de usuario Pagina 99