Ametek VTI Instruments EX1200-1538, Руководство пользователя

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VTI Instruments Corp.
14 EX1200-1538: Introduction
Duty Cycle Measurement
Measured
Where:
T
ON
= Input pulse ON time (in s)
T
OFF
= Input pulse OFF time (in s)
For T
ON
and T
OFF
, measurement accuracy, refer to the Pulse Width Measurement Accuracy Using
Digital and Analog Inputs calculations.
Time Interval Measurement Accuracy Using Analog and Digital Inputs
Refer to the Pulse Width Measurement Accuracy Using Digital and Analog Inputs calculations.
Addition of 1.48 x 10
-7
s offset to the pulse width measurement error for comparator slew rate
compensation. Slew rate of the comparator is 400 ns (0 V - 3.3 V LVTTL threshold 1.2 V to
detect as high).
Positive offset if analog input is the reference channel and negative offset if digital channel is the
reference.