Section 9: The Setup Program; Measurement Choices - HP 82479A Owner's Manual

The setup program is used to create and manage setup files. These files are used by the l_[I[5 program to
guide the data acquisition and control procedure. A setup file consists of one or more channel groups.
(Refer to section 8, "Defining a Data Logging Problem" for further information about channel groups.)
The data logger package can support up to 20 groups with up to 5 limit tests per group. The scheduler can
support 1 second resolution for group execution appointments.
9.1 MEASUREMENT CHOICES
Each group can measure one or more channels or control a single channel in the HP 3421A Data
Acquisition/Control Unit. There are 22 measurement or control functions available:
SIGNALS TEMPERATURE DIGITAL
DC Volts T,eE,J,K,R,S Thermocouples Digital Bit
AC Volts 2252 Ohm Thermistor (2WQ2) Digital Byte
4-20mA Current 2252 Ohm Thermistor (4WQ)
2-Wire Ohms S000 Ohm Thermistor (2WQ) CONTROL
4-Wire Ohms 5000 Ohm Thermistor (4WQ)
Frequency European RTD (&x=.00385) (2wQ) Open Act/Bit
European RTD (x=.00385) (4wQ) Close Act/Bit
Most functions can call a user-written conversion program which may be used to perform additional
processing on each reading, such as a unit conversion.
As an alternative to these functions, a channel group may call a custom program. The L.I15 program
expects up to thirty numbers in return, and stores the readings in the same fashion as other channel
groups. This allows the user to include measurements from a sensor or instrument that is not directly
supported by the data logger package, or create custom limit action capabilities.
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