Section 6
:
Buffer: Data Storage and Retrieval
Series 3700 System Switch/Multimeter Reference Manual
6-4
Document Number: 3700S-901-01 Rev. A / August 2007
1. Press the
CONFIG
key.
2. Press the
STORE
key. The RD BUFFER ATTR MENU will open.
3. Configure the buffers APPEND mode as well as view the COUNT and CAPACITY of the
selected buffer.
Append
With buffer append mode disabled, the buffer is cleared (readings lost) before a new storage
operation starts. To manually clear the buffer, when selected:
1. Press the
STORE
key
.
The "RD BUFF ACTION MENU" will open.
2. Scroll to select the "CLEAR" option and press
ENTER
key
once highlighted.
NOTE
Buffers created on the front panel have the append mode enabled by default.
When buffer append mode is enabled, the buffer is not cleared and each subsequent storage
operation appends the readings to the buffer. When the buffer fills to buffer size (capacity) of
readings, the storage process stops. The readings must be cleared before the next storage
operation starts.
Remote buffer operation
The Series 3700 buffer may be controlled over the bus by sending ICL (Instrument Control
Library) commands.
Data store (buffer) commands
The following table summarizes the commands associated with data store operation.
Command
Description
mybuffer = dmm.makebuffer(n)
Create dynamically-allocated buffer (
n
readings).
mybuffer = nil
Delete dynamically-allocated buffer.
Reading buffers
The Series 3700 uses synchronous reading acquisition. The routines that make single-point
measurements can be configured to make multiple measurements where only one would
ordinarily be made. Also, consider that the measured value is not the only component of a
reading. The measurement status (for example, Limit or Overflow) is also data associated with a
particular reading.
