Anritsu ML2430A operation manual Setup Options

PROCEDURES PROFILE OPERATION MODE

NOTE

For smaller values of display trigger delay, it is possible that the display will cover time intervals (on the left of the display) for which there is no data. In these conditions, the cursors are normally prevented from displaying data taken there as it will be in

error (there is no data). The position of ‘x’ is nominally 10% of the screen. This can be altered to any percentage the user requires in the SYSTEMmoremoreGRAPHICS preferences menu as the PRETRIGGER percentage. It can also be set to ZERO to remove pretrigger data and prevent confusion in cases of small display trigger delays.

Profile can display A, B, or A–B measurements. Note that in the case of a ratioed measurement (A–B), the data is calculated as a straight dB difference (not a LINEAR mw difference). This is not the same as a MODULATED POWER AVERAGE measurement.

4. As well as the CURSOR readouts described above, the POWER AVERAGE method can be used to display the average power between the two cursors. This is performed as a TRUE AVERAGE and is the actual average of all the data points between and including the cursors. By placing the cursors on the top of a pulse, the flat top power can be measured. By placing the cursors with a period of the pulse, the average power of the pulse is calculated. This is more accurate than a simple duty cycle calculation which makes assumptions about the pulse shape. Use the SENSORAVERAGE menu to enable this readout method.

	NOTE
	The display resolution is 200 pixels. Consider this effect
	on the resolution of timing data. For example, a 1
	millisecond PROFILE window would have a cursor resolu-
	tion on the display of 5 microseconds.
	The LIMITS test functions on PROFILE data, and can be
	configured to BEEP on fail conditions.
Advanced Triggering	The other aspects of triggering allow for fine tuning of the trigger conditions. This
and Setup Options	includes:
	1. Selection of HIGH or LOW going edge in External TTL.
	2. Level setting on Internal A or B trigger, as well as polarity - HIGH or LOW
	going.
	3. ARMING via an External BLANKING input. 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
	signal can be set (high or low) using the SystemRear PanelBNCTTL LEVEL
	menu setting. When ARMING is set to Blanking OFF, all samples are read.
	4. In the SYSTEMmoremoreGRAPHICS menu, there are options for:

ML2430A OM 5-15