Trigger Menu Front Panel Operation
5-16 PN: 10585-00001 Rev. P ML2437A/38A OM/PM
5-5 Trigger Menu
The Trigger function in the ML243xA allows the user to define under what conditions
measurements are taken, and the time period they are taken over. For instance, the
READOUT mode can be configured to display the average power of the ON period of a square
wave, or an individual slot in a GSM burst.
The Trigger menus are always available in PROFILE operation mode, as selected from the
System menu. If PROFILE cannot be selected within the System > Setup submenu, change
the GPIB mode to ML24XX in the System > Rear Panel submenu.
In READOUT or Power vs. Time modes, the trigger setup menus are available if the channel
input configuration SENSOR > Setup > MODE is set to CUSTOM. A display channel using
more than one sensor (A–B for example) where either sensor is in CUSTOM mode, is assumed
to be in custom mode and can use triggering. Trigger setup is available only for the display
channels that meet the above criteria.
In PROFILE mode, the display shows an ‘x’ marking the trigger point plus the display trigger
delay time, updated for each new set of data. This trigger point mark rotates as the profile
data is updated, changing between '´' and '+' on each data update. On rapid updates, the
trigger point mark may appear like a star (
S), as it is rotating so quickly. In manual, external
or GPIB triggered displays, the mark rotates at a slower rate and each true data update can
be seen.
This point can be moved across the x axis by the pre trigger percentage. If the trigger source
is either default, mod average or custom continuous, the trigger point has no meaning since
the system is continuously triggering. The mark does not appear in the Power vs. Time or
Source Sweep modes, as it is not applicable.
Trigger icons indicate the type of triggering selected and appear level with the related
channel on the far left of the screen. Trigger icons are not displayed if the system is in Profile,
Power vs. Time, or Source Sweep operation modes, if all sensors used in a channel input
configuration are in the DEFAULT measurement mode, or if the peakmeter is displayed.
Note
When editing an entry in a menu, pressing the CLR key clears the digits. If in a
menu screen, pressing the CLR key returns to the previous menu level.
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