Agilent Technologies L4400 manual Monitor Mode

3Operating and Programming

•If you define a scan list with the sequential mode enabled and later disable the mode, the scan list will not be reordered; however, the scan list will be treated as a non- sequential list thereafter.

•If you have defined a scan list with the sequential mode disabled (OFF) and later enable the mode, the channels will be reordered.

•Non- sequential scan lists are not stored as part of the instrument state by the *SAV command; in this case, the ordered mode will be enabled and the scan list will be empty when the instrument state is restored (*RCL command).

•The scan order setting is stored in volatile memory and the ordered mode will be enabled when power is turned off or after a Factory Reset (*RST command).

The command used to control the order of the scan list is:

ROUTe:SCAN:ORDered {OFFON}

Monitor Mode

Usage:

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

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

In the Monitor mode, the instrument takes readings as often as it can on a single channel or during a scan. This feature is useful for troubleshooting your system before a test or for watching an important signal.

•Any channel that can be “read” by a device can be monitored. This includes the digital input, totalizer, and the counter channels.

•Readings acquired during a Monitor are not stored in memory. However, all readings from a scan in progress at the same time are stored in memory.

•The Monitor mode is equivalent to making continuous measurements on a single channel with an infinite scan count. Only one channel can be monitored at a time but you can change the channel being monitored at any time.

•A scan in progress always has priority over the Monitor function.

•Channels do not have to be part of an active scan list to be monitored; however, the channel must be configured for a measurement in order to be monitored.

•The Monitor mode ignores all trigger settings and takes continuous readings on the selected channel using the IMMediate (continuous) source.

80 L4400 User’s Guide