Syntax

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Boonton55xxx IVI Driver Reference

BTN55XXX_ATTR_CHANNEL_UNITS Attribute
Channel See Also

Set or return units for the selected channel. Voltage is calculated with reference to the sensor input impedance. Note that for ratiometric results, logarithmic units will always return dBr (dB relative) while linear units return percent.

Attribute Tree Node: \Boonton55xxx\Instrument Specific\Channel\Units

Declaration: Btn55xxx.h

Implementation: Btn55xxx.dll

Visual C++

#define BTN55XXX_ATTR_CHANNEL_UNITS 1150014
ViStatus Btn55xxx_GetAttributeViInt32(
ViSession Vi,
ViConstString RepCapIdentifier,
ViAttr AttributeID,
ViInt32* AttributeValue
);
ViStatus Btn55xxx_SetAttributeViInt32(
ViSession Vi,
ViConstString RepCapIdentifier,
ViAttr AttributeID,
ViInt32 AttributeValue
);

Parameters

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

RepCapIdentifier

A physical or virtual repeated capability identifier. For valid values, see the Channel repeated capability.

AttributeID

Must be BTN55XXX_ATTR_CHANNEL_UNITS.

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.

Instrument Command

CALCulate{Channel}:UNITs {DBM|W|V|DBV|DBMV|DBUV}

CALCulate{Channel}:UNITs?

Allowed Values

BTN55XXX_VAL_UNITSD_BM, BTN55XXX_VAL_UNITSWATTS, BTN55XXX_VAL_UNITSVOLTS, BTN55XXX_VAL_UNITSDBV, BTN55XXX_VAL_UNITSDBMV, BTN55XXX_VAL_UNITSDBUV

Defined Values

Name	Description
BTN55XXX_VAL_UNITSD_BM	dBm
BTN55XXX_VAL_UNITSWATTS	Watts.
BTN55XXX_VAL_UNITSVOLTS	Volts.
BTN55XXX_VAL_UNITSDBV	dB relative to volts.
BTN55XXX_VAL_UNITSDBMV	dB relative to milliwatts.
BTN55XXX_VAL_UNITSDBUV	dB relative to microwatts.

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Requirements

Supported Models

All supported