SCALING FACTOR (EMM): EMM=m [CMT]
Sets to "m" the SCALING FACTOR ("m" coefficient) that is to be used whenev-
er "MXB" calibration is in effect (full range is ±32700). Also sets desired preci-
sion (decimal-point location).
Note: The following command applies to the Model 3540 FREQUENCY CONDI-
TIONER only.
FREQUENCY CALIBRATION (FRQ) FRQ=i,u [CMT]
Sets an appropriate SCALING FACTOR for the Model 3540 Frequency Condi-
tioner when transducer calibration data is known; "i" is the manufacturer-sup-
plied full-scale rating of the frequency source (or the highest frequency
expected to be measured), in Hertz; "u" is the corresponding value of the
measured phenomenon, expressed in the desired engineering units and
measurement precision. You need not zero the conditioner in this case.
Note that in the answer returned in response to an FRQ [CMT] interrogation,
the displayed "i" and "u" values will have been automatically rescaled to reflect
the current input frequency range. Thus, for example, if the "8000 Hz" range is
in effect and the command FRQ=10000,8000 [CMT] has been entered, an
answer of "8000,6400" will be given to a subsequent query of FRQ [CMT]
(since 8000/10000 = 6400/8000).
Note: The following command applies to the Model 3570 DC STRAIN GAGE
CONDITIONER only.
MV/V CALIBRATION (MVV) MVV=i,u [CMT]
Sets an appropriate SCALING FACTOR for the Model 3570 DC Strain Gage
Conditioner when transducer calibration data is known; "i" is the transducer
sensitivity rating in "mV/V, full scale"; "u" is the nominal full-scale rating
expressed in desired engineering units and measurement precision, if the
instrument is set to an EXCITATION level of 10 V-DC. When the excitation is 5
V-DC, it is necessary to set "u" equal to twice the nominal full-scale rating.
When the excitation is 2 V-DC, you must set "u" equal to five times the nominal
full-scale rating.
Also note that in the answer returned in response to an MVV [CMT] interro-
gation, the displayed "i" and "u" values will have been automatically rescaled
to reflect the current "mV/V range" setting. Thus, for example, if the "3 mV/V"
range is in effect and the command MVV=2.500,5000 [CMT] has been
entered, an answer of "3.000, 6000" will be given to a subsequent query of
MVV [CMT] (since 3.000/2.500 = 6000/5000).
4.21
SETUP: INSTRUMENT CALIBRATION
4
4.d CALIBRATING THROUGH THE RS-485 INTERFACE
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