3: Functions and features Model 2450 Interactive SourceMeter® Instrument
3-10 2450-901-01 Rev. B/September 2013
Reading buffers
Reading buffers capture measurements, ranges, instrument status, and the output state of the
instrument. The Model 2450 has two default reading buffers. You can also create user-defined
reading buffers.
Reading buffers provide the following statistics: average, minimum, maximum, and standard
deviation. If you use SCPI commands over the remote interface, peak-to-peak statistics are also
available.
You can perform the following operations on reading buffers from the front panel or the remote
interface:
• Configure, store, and recall reading buffers. Only one reading buffer is active when you control
buffers from the front panel.
• View reading buffer content.
• Choose to store readings in the default reading buffers or the user-defined reading buffers.
• Save reading buffer content to a USB flash drive.
• Set reading buffers to fill once or fill continuously.
• Change the capacity of reading buffers.
• Delete user-defined reading buffers. You cannot delete defbuffer1 and defbuffer2.
• Clear reading buffers.
• Clear the default reading buffers and delete the user-defined reading buffers by turning the
instrument off or sending an instrument reset command.
Getting started with buffers
The following sections provide you with information to help you start using reading buffers. The
Remote buffer operation (on page 3-27
) section provides additional information about accessing the
reading buffers with remote commands.
Using default buffers
There are two default buffers:
• defbuffer1
• defbuffer2
If you do not select a specific buffer, all readings are stored in defbuffer1. If you want to store
readings in defbuffer2, you need to select it. If you want to store readings in a user-defined buffer,
you need to create the buffer and then select it.
Parameters in buffer-specific commands that require buffer names default to defbuffer1 with the
following exceptions:
• Print commands
• SCPI command TRACE:MAKE
• TSP command buffer.make
For information about default values, see Reset default values (on page 4-24
).
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