Write / Read

About VNA Second Source

Description

Sets the state of the VNA source for the specified port.

VB Syntax

chan.SourcePortMode (sourcePort) = value

Variable

(Type) - Description

chan

(object) -  A Channel object

sourcePort

(long integer) - The source port for which to make this setting.

Note: If the port is defined by a string name, such as an external source, a balanced port, or one of the Source 2 outputs on the 2-port 2-source VNA-x model, then you must use chan.getPortNumber to translate the string into a port number. To learn more see Remotely Specifying a Source Port.

value

(enum) - State of the source. Choose from:

0 - naSourcePortAuto  Port power is turned on when required for a measurement.

1 - naSourcePortOn  Port power is always ON, regardless of the measurement.

2 - naSourcePortOff  Port power is always OFF, regardless of the measurement.

3 - naSourcePortNOTUSE  Do not send OFF commands to the external sources. If an external source is in the OFF state, this option is used to stop sending OFF commands to the external source to increase sweep speed.

Return Type

Enum

Default

0 - naSourcePortAuto

Examples

chan.SourcePortMode(1) = naSourcePortOn 'Write
state = chan.SourcePortMode(4) 'Read

C++ Syntax

HRESULT get_SourcePortMode(long sourcePort, enum NASourcePortMode*);

HRESULT put_SourcePortMode(long sourcePort, enum NASourcePortMode);

Interface

IChannel9