Measurement-computing DAQFlex User Guide Bedienungsanleitung PDF herunterladen (Seite 44)

DAQFlex Software User's Guide DAQFlex Message Reference – Programming messages – AISCAN

COUNT

 Get the number of samples per channel that have been acquired by the AISCAN operation.

Message

"?AISCAN:COUNT"

Response

"AISCAN:COUNT=value"

value

The number of samples per channel acquired.

Example

"AISCAN:COUNT=64"

Note

This message is processed by the DAQFlex Software library, and is not sent to the

device.

EXTPACER

 Set the configuration of the device's external pacer pin.

Message

"AISCAN:EXTPACER=value"

Response

"AISCAN:EXTPACER"

value

ENABLE (for most devices), DISABLE

Example

"AISCAN:EXTPACER= ENABLE"

Note

 Some devices support ENABLE/MASTER, ENABLE/SLAVE, or ENABLE/GSLAVE.

 For devices which do not support a master and slave configuration, the /MASTER and

/SLAVE designation is ignored.

 For devices which do not support disabling of the pacer or SYNC input (for example,

the terminal is always enabled as either input or output), the DISABLE designation is

invalid.

 Set to ENABLE if the device is paced using a continuous clock source, such as a

generator. In this mode, the first clock pulse after setting up the scan is ignored in

order to ensure adequate setup time for the first conversion.

 Set to ENABLE/GSLAVE if the device is paced from a DAQFlex supported device. In

this mode, the first clock pulse after setting up the scan is held off to ensure

adequate setup time for the first conversion. No pulses are ignored.

 When the external pacer is enabled, the AISCAN:RATE property should be set to

approximately what the external pacer rate will be, because internal transfer sizes

are calculated using the rate and channel count.

 When not specified, the default is DISABLE.

 Get the configuration of the device's external pacer pin.

Message

"?AISCAN:EXTPACER"

Response

"AISCAN:EXTPACER=value"

The channel number.

value

ENABLE (for most devices).

Note

Some devices support ENABLE/MASTER, ENABLE/SLAVE, ENABLE/GSLAVE,

DISABLE/MASTER, or DISABLE/SLAVE.

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