GtDio6xChannelSetSourceImpedance

GX5961, GX5964, File

Programs the channel output impedance.

GtDio6xChannelSetSourceImpedance (nHandle, lChannelListArraySize, palChannelListArray, nImpedance, 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.
lChannelListArraySize	LONG	Used to specify the number of channels to set. This parameter should not be greater than the size of palChannelListArray. If GTDIO6X_ALL_DOMAIN is passed in, then the palChannelListArray parameter can be set to NULL and the settings will be applied to all channels in the Domain.
palChannelListArray	PLONG	Array containing channels numbers that will be set by this function, channels numbers are 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.
nImpedance	SHORT	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);