Specifications

Section 7. Measurement Instructions
7.1 Voltage Measurements
VoltDiff – Differential Voltage Measurement............................................. 7-3
VoltSE – Single-ended Voltage Measurement ............................................ 7-3
7.2 Thermocouple Measurements
Measure the Output of Thermocouples and Convert to Temperature.
TCDiff – Differential Voltage Measurement of Thermocouple .................. 7-3
TCSE – Single-ended Voltage Measurement of Thermocouple.................. 7-4
Resistance Bridge Measurements
Bridge measurements combine an excitation with voltage measurements and
are used to measure sensors that change resistance in response to the
phenomenon being measured. These sensors include RTDS, thermistors,
potentiometers, strain gages, and pressure and force transducers.
7.3 Half Bridges
BrHalf – Half Bridge ................................................................................... 7-5
BrHalf3W – Three Wire Half Bridge .......................................................... 7-6
BrHalf4W – Four Wire Half Bridge............................................................ 7-6
7.4 Full Bridges
BrFull – Four Wire Full Bridge ................................................................... 7-8
BrFull6W – Six Wire Full Bridge ............................................................... 7-8
7.5 Excitation
ExciteCAO................................................................................................. 7-10
ExciteI........................................................................................................ 7-11
ExciteV - Sets the specified switched voltage excitation channel to the
voltage specified ................................................................................ 7-11
SW12 ......................................................................................................... 7-12
7.6 Self Measurements
Battery – Measures battery voltage .......................................................... 7-12
Calibrate – Adjusts the calibration for analog measurements.................... 7-12
InstructionTimes - Returns the execution time of each instruction ........... 7-15
PanelTemp – (Used as a reference for thermocouple measurements) ....... 7-16
7.7 Digital I/O
CheckPort - Returns the status of a control port........................................ 7-16
PeriodAvg - Measures the period or the frequency of a signal on a
single-ended channel ......................................................................... 7-16
PortsConfig - Used to configure one or more control ports as either
input or output ................................................................................... 7-19
7-1