WPI APOLLO 4000, Инструкция по эксплуатации

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APOLLO 4000
OPERATING INSTRUCTIONS
WORLD PRECISION INSTRUMENTS B-6
• Sample Rate — Selecting this command triggers the
following sequence of events:
Current sampling rate is indicated ( Fig. B6 ). If this
value is satisfactory, the user can chose Cancel and
continue to work with the current sampling rate.
NOTE: The default sampling rate is 10 samples per second, sufficient
for most applications.
To select a different sampling rate, select OK . The sampling rate change
screen ( Fig. B7 ) will appear following OK confirmation by another
confirmation screen ( Fig. B8 ).
The user can cancel the
action and continue to
work with the current
setting. Changing the
sampling rate changes
the data file structure
and it is therefore
necessary to close the
previous file ( Fig. B4 ).
This can interrupt the
current experiment
which may be undesirable. Therefore the user must carefully select the
sampling rate before the experiment. Sampling rate can be set from 1 to
50 samples/sec in increments of 5. It is very important for the user to
understand that Windows ® -based computers have the limitations of 16,384
pixels per screen and therefore (number of horizontal divisions=10) the
maximum horizontal scale value will be limited to an integer of 1,638.4/
sample rate. After the new sample rate is selected the horizontal scale
factor is set (for clarification) to the absolute maximum value. For instance,
if the sample rate is set to 5
samples/sec the horizontal
scale will be set to 327 sec/div.
The user can reset it to any
lower value (not lower than 1
sec/div).
Fig. B8
Fig. B6
Fig. B7