Anritsu ML2430A - Manual (Page 46)

DELAY
[TRGDLY
GTDLY] In Profile mode, DELAY sets the time delay (after the display trigger
delay) to when the system starts to take and display readings, rep-
resented by the left most cursor. Enter 0.0 to 1.0 seconds, in ms or
ms.
NOTE
Changing the left most cursor, or the trigger delay time, up-
dates the cursor or the delay time value accordingly. In Pro-
file mode, moving the cursor only allows updates to the
pixel resolution of the display. In Power vs. Time mode, the
delay and width can be used to alter the update rate.
In Readout mode (CUSTOM sensor mode), the value entered for
DELAY is applied after a trigger event, and before samples are
taken. Enter 0.0 to 1.0 seconds, in ms or
ms.
WIDTH
[TRGGW
GTGW] Enter 100 ns to 7.0 seconds (the default is 20 ms). In Profile mode,
WIDTH is the gate time the system uses to perform a cursor aver-
age measurement. The time interval is represented by the space
between the left most cursor and the right most cursor. Changing
either cursor, or the gate width value, updates both the cursors and
the gate width value.
In Readout mode, this value defines the measurement gate width.
A measurement is presented as the average of all data taken in this
gate width.
In Power vs. Time mode, the delay and width can be used to alter
the update rate or sample rate.
EDGE
[TRGXTTL
GTXTTL] When set to External TTL, the power meter triggers on a TTL level
rising or falling. This selection sets the trigger for either a rising or
falling edge.
ARMING
[TRGARM
GTARM] Sets the trigger arming, unless the trigger source is set to EXTTTL.
When ARMING is set to Blanking ON, only samples taken when
the rear panel Digital Input BNC is active will be averaged in the
measurement. The polarity of the rear panel Digital Input BNC sig-
nal can be set (high or low) using the
System|Rear Panel|BNC|TTL
LEVEL menu setting.
When ARMING is set to Blanking OFF, all samples are read irre-
spective of the level on this BNC.
Figure 4-3 shows a typical arming diagram.
4-18 ML2430A OM
TRIGGER MENU OPERATION
NOTE
The averaging function
averages a number of
gate WIDTHS, so for a
given averaging num-
ber, larger WIDTHS will
take longer to AVER-
AGE. Narrower widths
will average faster (but
may yield a less-settled
measurement).
NOTE
Use Arming to synchro-
nize to other equipment
or modulation/burst
synchronization. This
is a simple way to
inhibit measurements
during user-defined pe-
riods without entering
actual time periods.