Agilent Technologies L4400 manual Reading Format, Non-Sequential Scanning

Operating and Programming 3

Reading Format

Usage:

•L4450A 64- Bit Digital I/O (digital input, counter channels only)

•L4452A Multifunction Module (digital input, totalizer channels only)

During a scan, the instrument automatically adds a time stamp to all readings and stores them in memory. Each reading is stored with measurement units, time stamp, channel number, and alarm status information. You can specify which information you want returned with the readings.

•The reading format applies to all readings being removed from the instrument from a scan; you cannot set the format on a per- channel basis.

•The CONFigure and MEASure? commands automatically turn off the units, time, channel, and alarm information.

•The format settings are stored in volatile memory and will be lost when power is turned off or after a Factory Reset (*RST command).

The following commands to select the reading format.

FORMat:READing:ALARm ON

FORMat:READing:CHANnel ON

FORMat:READing:TIME ON

FORMat:READing:TIME:TYPE {ABSoluteRELative}

FORMat:READing:UNIT ON

Non-Sequential Scanning

Usage:

•L4421A 40- Channel Armature Multiplexer

•L4450A 64- Bit Digital I/O (digital input, counter channels only)

•L4452A Multifunction Module (digital input, totalizer channels only)

By default, channels are scanned in ascending order. If your application requires non- ordered scanning of the channels in the present scan list, you can use the non- sequential scanning mode.

•When sequential scanning is enabled (default), the channels in the scan list are placed in ascending order.

•When sequential scanning is disabled (OFF), the channels remain in the order presented in the scan list. Multiple occurrences of the same channel are allowed. For example, (@1001, 1001, 1001) and (@1010,1003,1001,1005) are valid and the channels will be scanned in the order presented.

L4400 User’s Guide 79