RS PRO RSDM-9060, Руководство пользователя

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109
Math Measurement
Applicable to
Background
Math measurement runs 6 types of mathematical
operations, dBm, dB, Compare, MX+B, 1/X and
Percent, based on the other measurement results.
Math Equation
dBm 10 x log10 (1000 x Vreading2 / Rref)
dB dBm – dBmref
Compare Checks and updates if measurement
data stays between the specified
upper (high) and lower (low) limit.
MX+B Multiplies the reading (X) by the
factor (M) and adds/subtracts offset
(B).
1/X Divides 1 by the reading (X).
Percentage Runs the following equation.
(ReadingX – Reference) x 100%
Reference
dBm/dB/Watt Measurement
Applicable to
Background
Using the ACV or DCV measurement result, the
RSDM-9060/9061 calculates the dBm, dB or Watt
value based on a reference resistance value in the
following way.
Equation dBm 10 x log
10
(1000 x Vreading
2
/ Rref)
dB dBm – dBmref
Watt Vreading
2
/Rref