Keysight E6640A, Measurement Applications User & Programmer Reference

Page: 528 / 2870

8 Channel Power Measurement
Source
Key Path
Source, Modulation Setup, ARB, Select Waveform
Initial S/W Revision A.05.00
Load Segment To ARB Memory
Allows you to load the selected file into ARB memory. On the front panel you select the file for loading to
the ARB memory by highlighting the desired file in the list. Using the SCPI command, you specify the file
name on the HDD.
“NVWFM” (none-volatile storage) MSUS (Mass Storage Unit Specifier) is supported in the memory
subsystem because the ARB memory cannot be accessed directly. Therefore, files must be downloaded to
the instrument hard disk and then loaded into the ARB memory. “NVWFM” MSUS will be mapped to the
default directory D: VARB. The SCPI command supports using either “NVWFM” MSUS or specifying a full
path. For more information, see
Memory Subsystem (Remote Command Only) .
If a file of the same name already exists within ARB memory, it is overwritten. If you wish to load two
segments of the same name, you must rename one of the segments before loading it into ARB memory. To
rename a segment, you can either use Windows File Explorer, or the :MMEMory:COPY command.
NOTE: When a waveform file is loaded to ARB memory, burst timing adjustments are made automatically,
based on whether or not a Multiport Adapter is connected to the test set and powered on. If the
connection/power status of the Multiport Adapter is changed after a waveform file has been loaded, it
needs to be loaded again.
Key Path
Source, Modulation Setup, ARB, Select Waveform, Segments on Hard Disk
Remote Command :SOURce:RADio:ARB:LOAD <string>
Example :SOUR:RAD:ARB:LOAD “D: VARB\testwaveform.bin”
or
:SOUR:RAD:ARB:LOAD “NVWFM:testwaveform.bin”
Notes Because loading the file involves a delay of unpredictable length, this command should be followed by
the query *OPC?, which holds off subsequent commands until the loading operating is complete.
<string> – specifies the path name of the file to load from the HDD into ARB memory. It could be a
<full path + filename>, or <“NVWFM” MSUS + colon + filename>.
When in Sequence Analyzer mode, and Include Source is Yes, an attempt to load a file to ARB
memory will be rejected with an error.
When Include Source is Noand if there is insufficient free ARB memory to load the selected
waveform, an error is generated. .
If you specify a file over SCPI, but the file is not at the specified location, an error is generated.
If you try to load a waveform file but the file contains less than 500 IQ sampes, an error is generated.
If you try to load a Signal Studio waveform “*.wfm” which contains invalid waveform header, an error
is generated.
If the ARB is ON when you load afile to ARB memory or delete a file from ARB memory, the playing
waveform segment may not keep phase continuity during the ARB memory operation. The waveform
will be replayed after the ARB operation is finished.
ARB can be loaded into ARB memory even required licenses do not present on the instrument. In this
528 W-CDMA & HSPA Measurement Applications Reference