1250 Frequency Response Analyzer Recording, Learning and Storing Facilities
SH/1250/3 12-9
READING FROM THE FILE (cont.)
This indicates that the 1250 has taken 181 readings, of which 168 were of the specified
type to be filed e.g. FILE [fail]. Only 99 readings have been filed in this example, as this
was the current maximum capacity of the File.
Note that READINGS and ACCEPTED can both count up to 99999, but no higher. In
the unlikely event of more than this number of readings being taken or accepted, the
figures displayed in SUMMARY remain at 99999.
[list] FILE: causes all the readings in the File to be fed to whichever output devices have
been enabled via the DATA OUTPUT key. This mode is usually too fast for the eye to
follow on the Display and is primarily intended for transferring the contents of the File to
an output device, such as a printer. The 1250 settings used to obtain these filed
readings may also be listed to the printer by means of the STATUS key. Chapter 11,
Section 12.1.5 'Printed Record', explains how this is done.
[clear] FILE: when entered, the complete File is erased. It is a wise precaution to clear
the File before starting a new one, as previously mentioned in Section 12.2.5 "Starting a
File".
12.3 LEARNT PROGRAMS
12.3.1 INTRODUCTION
The 1250 can learn a sequence of measurement instructions for recall when required.
Thus, for repetitive work, such as production tests, the identical tests can be applied
time and time again by merely commanding the instrument to execute one of the stored
programs.
One 'instruction' is formed by all the menu selections required for a given parameter
together with its numerical value. A typical comprehensive routine uses less than 50
instructions.
Learnt programs may be stored in either a permanent 'Supervisor' memory or in a
battery backed 'Normal' memory. The maximum number of instructions that can be
learnt is equal to the number of free memory blocks in each memory location.
In the 'Normal', a maximum of 500 lines of program may be stored and in the
'Supervisor', memory a maximum of 508 lines may he stored. The total learnt
instruction capacity can be split into 9 separate programs in the permanent (Supervisor)
memory and 9 programs in the volatile (Normal) memory.
To determine how many memory Blocks are free in either the Supervisor or Normal
memory at any time interrogate the 'µP' soft key in the STATUS menu.
12.3.2 LEARNING A PROGRAM: FROM THE FRONT PANEL
To learn a program, press PROGRAM LEARN.
The Display will show:
PROGRAM( ) [learn] or [edit] or [clear]
ENTER the required program number, from 1 to 9, in the round brackets. If a program
already exists under this number, but is to be erased, SELECT [clear] and ENTER. Now
SELECT [learn] and ENTER. The Display will show e.g.: 'PROGRAM 1 learn mode'
with one soft key assigned the title QUIT.
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