Features and Functions

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User-Defined Channel Labels

You can assign user- defined labels to any channel, including Analog Bus channels on the multiplexer and matrix modules. User- defined channel labels are available for identification purposes only and cannot be used in place of a channel number within a command string.

When shipped from the factory, each channel is assigned a unique factory- default label (cannot be overwritten). From the front panel, the factory- default labels are shown on the upper line of the display (e.g., “MUX CH BANK 1”, “MATRIX1 ROW3 COL4”, “DIO BYTE 1”, etc.). From the Web Interface, the factory- default labels are displayed as the channel number (e.g., “1001”, “3020”, etc.).

If desired, you can assign the same user- defined label to multiple channels within the same module or on different modules (i.e., channel labels are not required to be unique).

You can specify a label with up to 18 characters. You can use letters (A- Z), numbers (0- 9), and the underscore character. If you specify a label with more than the allowed 18 characters, it will be truncated (no error is generated).

From the Web Interface, a limited number of characters can be displayed due to space constraints in the browser window. If the user- defined label it too long to be displayed properly, it will be truncated (no error is generated).

The instrument keeps a record of what module types are installed in each slot. If a different module type is detected in a specific slot at power on, all user- defined channel labels for that slot are discarded. If an empty slot is detected at power- on, any previously- defined labels for that slot are preserved and will be restored if the same module type is installed later; however, if a module of a different type is installed in that slot, the previously- defined labels will be discarded.

All user- defined channel labels are stored in non- volatile memory, and do not change when power has been off, after a Factory Reset (*RST command), after an Instrument Preset (SYSTem:PRESet command), or after a stored state is recalled (*RCL command).

34980A User’s Guide

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Agilent Technologies Switch/Measure manual User-Defined Channel Labels