Fluke 1560 Black Stack, Руководство пользователя

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shows the device commands used to read or set the setup parameters of the PRT
Scanner Input Device.
Below are some examples of using the device commands to set the device setup
parameters. For these examples it is assumed that the 2562/2568 PRT Scanner
Module is placed second in the stack. These commands can be sent through any
communication interface including the IEEE-488 and RS-232 interfaces.
SYST:MOD2:DEV1:WRIT “CURR”,1.4 Set the excitation current to 1.4
mA.
SYST:MOD2:DEV1:READ? “CURR” Read the excitation current.
SYST:MOD2:DEV1:WRIT “WIRF”,3 Set the front-row configuration to
three-wire.
9.4 Calibration
This section explains the calibration procedure for the 2562/2568 PRT Scanner
Module.
9.4.1 Calibration Parameters
Three adjustable parameters are used for calibration: 0_ADJ, 100_ADJ, and
400_ADJ. 0_ADJ directly affects the measurement at 0
Ω
. It has negligible ef-
fect at 100
Ω
but significant affect at higher resistances. 100_ADJ directly af-
fects the measurement at 100
Ω
. It has negligible effect at 0
Ω
and
proportionately greater effect the higher the resistance. 400_ADJ directly af-
fects the measurement at 400. It has negligible effect at 0
Ω
and 100
Ω
with
greater effect the more the resistance deviates from 0
Ω
or 100
Ω
. Each of the
parameters has positive effect at their primary resistances: increasing the value
of the parameter increases the measured resistance. The default and theoreti-
cally normal value for each is 0.
129
9 2562/2568 PRT Scanner Module
Calibration
Device
Command Parameter Description
CURR 1, 1.4 (2562)
0.1, 0.05 (2568)
Excitation current, mA
WIRF 3, 4 Front-row wire configuration
WIRR 3, 4 Rear-row wire configuration
SAMP 2, 10 Sample period, seconds
ARNG AUTO, LOW, HIGH Resistance range
Table 25 PRT Scanner Commands