Philips PM3350A - Page 75

a - A2
4 APPLICATIONS
PROCESS ENVELOPE menu
l>IIOCESS ENV(L0PC ON -nOO
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This function stores alternating the minimum and the maximum of each sample
position over the sweeps taken. The ENVELOPE is stored in the reference
register (R1, R2 or R3} and default displayed together with the acquired signal
(display memory RO).
Once activated, this is a continuous process until it is switched-off. The
ENVELOPE process is started again when the INIT softkey is pressed or when
the triggering or amplitude-control is changed. In this case the display memory is
cleared.
In ROLL mode, ENVELOPE is temporarely switched-off. This is indicated by the
message:
ENVELOPE suspended because of ROLL mode
During AUTOZOOM, ENVELOPE is also temporarely switched-off. This is then
indicated by the message:
ENVELOPE suspended because of AUTOZOOM
In this case, the ENVELOPE process can be re-activated again by pressing the
RETURN key. This is indicated by the message:
ENVELOPE re-activated
Activating or de-activating of the ENVELOPE process can be done by using the
ON/OFF softkey. When de-activated, only the display memory RO is displayed
again.
Redefining the reference register will stop the ENVELOPE process. This is
indicated by the message;
ENVELOPE de-actIvated
<.3 UEMUS AND MEASUREMENTS