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11 APD Measurement

Save

If you try to edit the name of an empty register, the analyzer will first save the state to have a file to put the

name in. If you load a named state file into an analyzer with older firmware it will ignore the metadata.

The *SAV and *RCL commands will not be affected by the custom register names, nor will the MMEM

commands.

Selecting any one of these register menu keys causes the State of the currently active mode to be saved to

the specified Register. The registers are provided for rapid saving and recalling, since you do not need to

specify a filename or navigate to a file. Each of the register menu keys annotates whether it is empty or at

what date and time it was last modified. In addition, you can use the Edit Register Names key to enter

custom names for each register.

Although these 16 registers are the only registers available from the front panel, there are 128 state

registers available in the instrument. Registers 17–128 are only available from the SCPI interface, using

the *SAV command.

There is one set of 128 state registers in the instrument, not one set for each Mode. When a state is saved,

the Mode it was saved from is saved with it; then when it is recalled, the instrument switches to that Mode.

After the save completes, the corresponding register menu key annotation is updated with the date and

time and the message "Register <register number> saved" is displayed.

Key Path

Save, State

Mode All

Example *SAV 1

Range 1–16 from front panel, 1–128 from SCPI

Readback Date and time with seconds resolution are displayed on the key

A custom name of up to 30 characters entered using the Edit Register Names key

“(empty)" if no prior save operation has been performed to this register.

Initial S/W Revision Prior to A.02.00

Modified at S/W Revision A.11.00