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Boonton55xxx IVI Driver Reference


 

BTN55XXX_ATTR_MODE Attribute

Trigger See Also



Set or return the trigger mode for synchronizing data acquisition with pulsed signals.

Attribute Tree Node: \Boonton55xxx\Instrument Specific\Trigger\Mode

Declaration: Btn55xxx.h

Implementation: Btn55xxx.dll

Visual C++

#define BTN55XXX_ATTR_MODE 1150006
ViStatus Btn55xxx_GetAttributeViInt32(
 ViSession Vi,
 ViConstString RepCapIdentifier,
 ViAttr AttributeID,
 ViInt32* AttributeValue
);
ViStatus Btn55xxx_SetAttributeViInt32(
 ViSession Vi,
 ViConstString RepCapIdentifier,
 ViAttr AttributeID,
 ViInt32 AttributeValue
);

Parameters

Vi

The ViSession handle that you obtain from the IviDriver_init or IviDriver_InitWithOptions function. The handle identifies a particular instrument session.

RepCapIdentifier

Must be VI_NULL or an empty string. This attribute is not defined on a repeated capability.

AttributeID

Must be BTN55XXX_ATTR_MODE.

AttributeValue (GetAttribute)

Returns the current value of the attribute. The user must specify the address of a variable that has the same data type as the attribute.

AttributeValue (SetAttribute)

The value to which to set the attribute.

collapse_allRemarks

NORM mode will cause a sweep to be triggered each time the power level crosses the preset trigger level in the direction specified by the trigger slope. If there are no edges that cross this level, no data acquisition will occur.

 

AUTO mode operates in much the same way as NORM mode, but will automatically generate a trace if no trigger edges are detected for a period of time (100 to 500 milliseconds, depending on timebase). This will keep the trace updating even if the pulse edges stop.

 

The AUTOPKPK mode operates the same as AUTO mode, but will adjust the trigger level to halfway between the highest and lowest power or voltage levels detected. This aids in maintaining synchronization with a pulse signal of varying level. Note that a setting of PKTOPK will be overridden and forced back to AUTO if a trigger level is set.

 

The FREERUN mode force traces at a high rate to assist in locating the signal.

collapse_allInstrument Command

TRIGger:MODE {NORMAL|AUTO|AUTOPKPK|FREERUN}

TRIGger:MODE?

collapse_allDefined Values

Name

Description

BTN55XXX_VAL_TRIGGER_MODE_NORMAL

The power meter causes a sweep to be triggered each time the power level crosses the preset trigger level in the direction specified by the slope.

BTN55XXX_VAL_TRIGGER_MODE_AUTO

The power meter automatically triggers if the configured trigger does not occur within the meter's timeout period.

BTN55XXX_VAL_TRIGGER_MODE_AUTO_LEVEL

The power meter automatically adjusts the trigger level the trigger level to halfway between the highest and lowest power levels detected.

BTN55XXX_VAL_TRIGGER_MODE_FREERUN

The power meter forces traces at a high rate to assist in locating the signal.

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collapse_allRequirements

Supported Models

All supported

collapse_allSee Also

Reference

Trigger

Btn55xxx

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