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SECTION
12
THE TRANSFER PROGRAM
12.1 DATA TRANSFER OPTIONS
The TEHHZFEFR program is used to transfer data from LOG, STRIP, and MONITOR data files to the
HP 44456
System
Software
package
running
on
an
HP Series 200
computer.
HP 44456
1s
a
Series 200-based software package for the HP 3852A Data Acquisition/Control Unit. However, the
numerous HP 44456 data analysis tools can be applied to HP-71 Data Acquisition Pac data once the data
is transferred with the TEHMSFER program. TEMHH=F ER offers two options for moving the data:
e One scan/vector. A single scan of a trace or channel group in the HP-71 corresponds to a vector
in the HP 44456 package. Data transfer consists of transmitting single scans, each of which
becomes a vector.
¢ One reading/vector: The set of data for a particular reading within each scan corresponds to a
vector in the HP 44456 package.
Data transfer consists of transmitting data for each reading,
each of which becomes a vector.
For example, if a strip chart data file contains 20 scans, and each scan contains three readings:
eo Transferring the data one scan/vector will produce 20 vectors, each containing three values.
o Transferring the data one reading/vector will produce three vectors, each containing 20 values.
The choice of which method to use depends on the application and how the data is to be used by the
HP 44456 package.
NOTE
Because of the structure of the data files in the HP-71 (refer to appendix
H), transferring the data one reading/vector requires significantly more file
I/O, resulting in increased execution time. If the file is on a mass storage
device, more physical I/O is required, resulting in increased execution time
and media wear.
There are three steps to transferring data between the HP-71 and an HP Series 200 computer:
e Establish a hardware link between the two computers for data transfer.
e Run the program «FEF ZEEE on the HP Series 200 computer. This program prompts for the
address of the HP-IL/HP-IB interface and the name of the vector to be stored.
12-1
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