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Ibtrg – National Instruments GPIB-PC User Manual

Page 158

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Section Four A

BASICA/QuickBASIC GPIB-PC Function Calls

©National Instruments Corp.

4A-83

GPIB-PC User Manual

BASICA/QuickBASIC

BASICA/QuickBASIC

IBTRG

IBTRG

Purpose:

Trigger selected device

Format:

CALL IBTRG (BD%)

Remarks:

BD%

specifies a device.

The

IBTRG

function addresses and triggers the specified

device, then unaddresses all devices on the GPIB.

IBTRG

calls the board

IBCMD

function to send the

following commands:

Listen address of the device;

Secondary address of the device, if applicable;

Group Execute Trigger (GET); and

Untalk (UNT) and Unlisten (UNL).

Other command bytes may be sent as necessary.

Refer to the

IBCMD

function for additional information.

Device Example:

1.

Trigger the device

ANALYZ%

.

100 CALL IBTRG (ANALYZ%)