HeMaTech 3925-0050 - Page 49

Command reference Menu 3. SETUP
EN 3925-0060 V207-00 MANUAL R03.doc
HeMaTech Prüftechnik
49
The end point of the record (reference curve) is the point in time at which recording of
the record is stopped, after the leak test has been started.
EnvelopTolerance:
The value should be 0.5 … 25.0 % and it is the tolerance of the permissible deviation
from the stored reference curve in % of the end value.
EnvelopTolerance ON/OFF:
You can switch enveloping curve tolerance to ON or OFF with the – and + keys.
Default setting is OFF.
EnvelopStart:
Enter the enveloping curve start point in seconds from 0.00 … 999.99.
Default value is 0.00 sec.
The start point of the enveloping curve is the point in time from which the deviation of the
enveloping curve from the reference curve is recorded, after the leak test has been started.
EnvelopEnd:
Enter the enveloping curve end point in seconds from 0.10 … 999.99.
Default value is 3.00 sec.
The end point of the enveloping curve is the point in time at which the evaluation of
the enveloping curve's deviation from the reference curve is stopped, after the leak test
has been started.
Saving the test program
By pressing the keys SHIFT + PgDn keys, or SHIFT + PgUp you can view both menu
pages again and make changes, which may be necessary. Once you have made all
desired changes in this dialog window, you can save these data.
To do so:
 Turn the key switch anti-clockwise to vertical position.
An audible signal will sound and the changed data will be written to the RAM
memory.
 Pull off the write protection switch in vertical ON-position, to avoid undesired
changes.
NOTE!
If you turn the key switch to vertical position while entries are still
missing, an audible signal will sound and the display will show a
warning with the list of the still undefined parameters, into which the
device will automatically enter the standard values.
If you want to exit the menu without saving:
 Press the ESC-key.
The first dialog window SET PARAMETER is displayed again.
 Press the ESC-key again, to return to the dialog window SETUP.