Anritsu ML2430A operation manual Shows a typical arming diagram

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.

DELAY	In Profile mode, DELAY sets the time delay (after the display trigger
[TRGDLY	delay) to when the system starts to take and display readings, rep-
GTDLY]	resented by the left most cursor. Enter 0.0 to 1.0 seconds, in ms or
	￿s.
	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 ￿s.
WIDTH	Enter 100 ns to 7.0 seconds (the default is 20 ms). In Profile mode,
[TRGGW	WIDTH is the gate time the system uses to perform a cursor aver-
GTGW]	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	When set to External TTL, the power meter triggers on a TTL level
[TRGXTTL	rising or falling. This selection sets the trigger for either a rising or
GTXTTL]	falling edge.
ARMING	Sets the trigger arming, unless the trigger source is set to EXTTTL.
[TRGARM	When ARMING is set to Blanking ON, only samples taken when
GTARM]	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 SystemRear PanelBNCTTL
	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