Boonton 4530 Peak Power Meter User Manual - Manual (Page 102)

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Chapter 4 Boonton Electronics
Remote Operation 4530 Series RF Power Meter
CALCulate:LIMit:CLEar
Description: Reset (clear to zero) the selected channel’s latched alarm limit status flags. Note that the
“current status” limit flags will continue to indicate the current alarm state.
Syntax: CALCulate[1|2]:LIMit:CLEar[:IMMediate]
Argument: none
Valid Modes: CW and Modulated modes
4.5.8 MARKer Subsystem
The MARKer group of commands is used to configure and locate measurement markers (cursors) at specific points on
the processed measurement waveform. FETCH? or READ? queries may then be used to retrieve measurements at the
two markers and in the interval between them. Markers are used in Pulse mode to perform measurements at or between
two time offsets relative to the trigger, and in Statistical mode to measure the power at a particular statistical percent, or
the percent at a specified power level. In Pulse mode, the markers can only be placed on the visible portion of the trace
(as defined by the timespan and trigger delay settings), while Statistical mode markers may be placed at any power or
percent value and will still return readings.
MARKer:MODe
Description: Set or return the global marker orientation for the pulse and statistical modes. Markers 1
and 2 are always paired and operate together. Markers are not used in the CW and modu-
lated modes. Vertical markers appear as vertical bars on the graph display, and measure the
power at a particular time (Pulse mode) or percent (Statistical mode). Horizontal markers
appear as horizontal bars, and measure the percent at a particular power level in Statistical
mode. Horizontal markers may also be used in Pulse mode graph display as “reference
lines”, to indicate certain power levels. In this case they are strictly visual tools, and no
marker measurements can be performed.
Syntax: MARKer:MODe <asc>
Argument: <asc> = OFF, VERT, HORZ
Valid Modes: Pulse and Statistical modes
MARKer:POSition:POWer
Description: Set or return the power level (position) of the selected horizontal marker. Note that horizon-
tal markers may be positioned at any power level, regardless of the vertical span setting,
and will not necessarily appear on the graph display.
Syntax: MARKer:POSition[1|2]:POWer <n>
Argument: <n> = -99.99 to +99.99 dBm
Valid Modes: Pulse and Statistical modes. MARKer:MODe must be HORZ.