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what is scaled data?

In a typical datalink, scaled data(temperatures, pressure, and speeds) is exchanged.  Please give some examples of scaled data.


Thank you!
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naseeam
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naseeam
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aburrCommented:
try this link for some insight into scaling data
http://www.vias.org/tmdatanaleng/cc_scaling.html
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naseeamAuthor Commented:
Raw data is received on a typical data link.  What are some examples of scaling raw data to get 1.5A or 4.4V.
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d-glitchCommented:
Digital data is in digital form.
So everything (temperature, pressure, speed) are digital numbers.

You have to know the scaling or conversion factor for each one.
They will all be different.

Temperature be a 12-bit binary number:  0 to 4095
The scaling could be 0 bits = 0 deg C   4095 bits = 100 deg C.

Speed could be another 12-bit binary number:  0 to 4095
The scaling could be 0 bits = 0 ft/s  or 0 mph.  4095 bits = some max value.

Sometimes the scaling has to accommodate positive and negative values,
so that 0 bits is not 0 units.
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d-glitchCommented:
One common scaling:

If voltage is a 10-bit binary number:  0 to 1023  corresponding to 0 to 10.23 V

Then 4.40 volts would be 440 bits ==> 01 1011 1000 ==>  256+128+32+16+8
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