AVL F-FEM-CON User Manual

63
Operation
F-FEM-CON — User’s Guide
This means that the quantization error decreases as measuring times are
increased.
The measurement error that is caused by inaccuracies of the reference
frequency remains constant. The total error is determined by the reference error
plus the quantization error.
The total error tends to come closer to the reference error if measuring times are
very long. The following figures show how the quartz reference and the
measuring time influence the error and the accuracy.
A similar calculation for the F-FEM-CON Advanced with 20 ns reference clock
shows a quantization mistake of 20 ns or an accuracy of 15.61 bit. The blue
curve displaces itself around 30 ppm downward.
Measuring error depending on the measuring time:
Total Error = Reference Error + Quantization Error
Fig. 36

AVL F-FEM-CON Specifications

General

Brand	AVL
Model	F-FEM-CON
Category	Measuring Instruments
Language	English