Recording, Learning and Storing Facilities 1250 Frequency Response Analyzer
12-8 SH/1250/3
12.2.5 STARTING A FILE
Readings can be stored in the File as follows:
1. Press DATA OUTPUT
2. Press soft key FILE
3. SELECT and ENTER the required mode, e.g. FILE [pass]
4. If not already done for other purposes, define what is a "pass", i.e. set Limits as
described in Chapter 10
5. Press VIEW FILE
6. SELECT and ENTER [clear] FILE
7. Start taking measurements
8. Stop taking measurements when it is judged that the File is full
9. Replay readings from the File.
12.2.6 READING FROM THE FILE
To replay from the File, press VIEW FILE. Three choices are available via the SELECT
key, as follows:
[display] FILE: enables contents of the File to be examined in detail on the Display.
When this mode is entered, the first reading stored in the File will appear in the form:
200.00 Hz + 0.99 V + 0.20 deg 1 HI
The first term shows the frequency at which the measurement was made. The next two
terms are the result of the measurement, in this case in Polar form. '1' indicates that this
is the first reading in the File. HI indicates that Limits have been set, and that this
reading is above the upper value.
Five soft keys are also assigned, which act as follows:
BOF This stands for Beginning Of File, and when pressed, causes the Display to show
the first reading stored. This reading is automatically displayed when [display]
FILE is pressed, so BOF is usually used to return to the beginning after other
readings have been displayed.
EOF This stands for End Of File, and when pressed, causes the last reading stored to
be displayed. The number 1 shown in the example above will change to show the
number of the EOF reading, which will be equal to the File size if the File is full.
The Limit indication may change to LO, or disappear altogether if the reading is
within limits.
↑ Enables the user to step through the File towards the beginning, one reading at a
time. If the key is held pressed, further readings will continue to appear from the
File.
↓ Enables the user to step on through the File towards the end, otherwise as for ↑.
SUMMARY A typical format produced in the Display by pressing this key would be:
READINGS 181 ACCEPTED 168 FILED 99
plus soft keys as before.
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