Agilent Technologies L4400 manual Creating the Scan List

Operating and Programming 3

•If a scan includes a read of the totalizer, the count is reset each time it is read during the scan only when the totalizer reset mode is enabled.

•At the end of the scan, the last channel that was scanned will be opened (as well as any Analog Bus relays used during the scan).

Any channels that were opened during the scan will remain open at the completion of the scan.

•If you abort a scan that is running, the instrument will terminate any reading in progress (readings are not cleared from memory). If a scan is in progress when the command is received, the scan will not be completed and you cannot resume the scan from where it left off.

Note that if you initiate a new scan, all readings are cleared from memory.

•The Monitor mode is automatically enabled on all channels that are part of the active scan list (see “Monitor Mode" on page 80).

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

Creating the Scan List

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)

A scan list is created as follows:

•Use the ROUTe:SCAN command to define the list of channels in the scan list. To determine what channels are currently in the scan list, use the

ROUTe:SCAN? query command.

•To add channels to the present scan list, use the ROUTe:SCAN:ADD command. To remove channels from the present scan list, use the

ROUTe:SCAN:REMove command.

•To remove all channels from the scan list, send “ROUT:SCAN (@)”.

•To initiate a scan, use the INITiate or READ? command. Each time you initiate a new scan, the instrument will clear the previous set of readings from memory.

To stop a scan in progress, use the ABORt command.

L4400 User’s Guide 71