GtDio6xChannelGetSourceImpedance

GX5961, GX5964, File

Returns the channel output impedance.

GtDio6xChannelGetSourceImpedance (nHandle, nChannel, pnImpedance, pnStatus)

Name	Type	Comments
nHandle	SHORT	Session identifier: ● Board handle is used when communicating with the hardware. The Board handle session identifier is returned by calling GtDio6xInitialize or GtDio6xSetupInitialization. ● File handle is used when communicating with a file. The File handle session identifier is returned by calling GtDio6xFileOpen.
nChannel	SHORT	Used to specify the channel to Get. This parameter is 0-based and refers to any channel in the Domain. Auxiliary channel numbers begin with 1000. GX5961: Each GX5961 board has 4 fully programmable auxiliary channels, and 8 TTL I/O channels. First 4 auxiliary channels may use all the Pin Electronics API. GX5964: Does not have Auxiliary channels.
pnImpedance	PSHORT	Used to set the source impedance. 0. GTDIO6X_TERM_LOWZ: Low impedance (approximately 12Ohm) path. 1. GTDIO6X_TERM_50OHM: 50-Ohm path.
pnStatus	PSHORT	Returned status: 0 on success, negative value on failure.

This function is used to switch between the two paths by way of a solid-state switch.

The following sets channels 0 and 2 output impedance to 50 Ohms, and returns channel 0 settings:

SHORT nImpedance, nStatus;

LONG alChannelList[2];

// Fill channel array

alChannelList[0] = 0;

alChannelList[1] = 2;

GtDio6xChannelSetSourceImpedance(nHandle, 2, alChanneList, GTDIO6X_TERM_50OHM, &nStatus);

GtDio6xChannelGetSourceImpedance(nHandle, 0, &nImpedance, &nStatus);