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Getting Started
2.8 DATA FILES
The programs in the Data Acquisition Pac use data files to store setup information and record
measurements.
The data files are organized to conform to the Hewlett-Packard Applications Format
(HPAF).
The HPAF file standard and the structure of the files created are discussed in appendix H,
"HPAF File Standard" and appendix I, "File Structures."
Data files may reside in three places:
e In the main RAM of the HP-71.
e In an independent RAM in the HP-71.
e On a mass storage device such as the HP 82161A Digital Cassette Drive or the HP 9114A
Disc Drive.
File names must begin with a letter, and may have up to eight characters (ten for a file written to a disc).
A file name may not include spaces or punctuation characters.
When the programs prompt for a file
name, the device name (if applicable) must be included in the response. If no device name is included, the
file will be created in the main RAM of the HP-71.
Example file names with device names are:
OATHFTS
A file called [MH THF T= residing in main RAM.
EVERTZ FORT C2
A file called EVEHMT% residing in independent RAM.
LOGOMTHEHFZ114
A file called |.IJGOATH residing on a disc drive.
ODATHFILE: TAFE: 2
A file called [IM THF I.Eresiding on a tape drive on loop 2.
For more information about file and device names, refer to section 6, "File Operations" in the HP-71
Owner's Manual.
2-7
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