Keysight E6640A, Measurement Applications User & Programmer Reference

Page: 2145 / 2870

13 Modulation Accuracy (Composite EVM) Measurement
Save
consequence of this is that the names will be persistent through a power cycle. Also, if a named state file is
transferred to another analyzer, it will bring its custom name along with it.
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.
Register 1 thru Register 16
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.
In products that run multiple instances of the X-Series Application, save with different register name if you
do not want to overwrite the register of another running instance.
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
OR
A custom name of up to 30 characters entered using the Edit Register Names key
OR
“(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
Register 1 thru Register 16
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
W-CDMA & HSPA Measurement Applications Reference 2145