Step 8. Selecting The Fifo Mode; Step 9. Initiating The Trigger System - HP E1313A Manual

Step 8. Selecting the FIFO Mode

Step 9. Initiating the Trigger System

Chapter 3
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The HP E1313/E1413's FIFO can operate in two modes:
•
Blocking: The FIFO stops accepting readings when it becomes full
(65,024 readings). Readings made after FIFO is full are discarded.
The first reading to exceed 65,024 sets the
STATus:QUEStionable:CONDition?
an error message is put in the error queue (read with
command).
SYSTem:ERRor?
•
Overwrite: When FIFO fills, the oldest readings in the FIFO are
overwritten by the newest readings. Only the latest 65,024 readings
are available.
The differences in these two modes is only significant if the rate of
retrieving data from the FIFO is slower than the reading rate of the A/D.
To set the FIFO mode (blocking is the
SENS:DATA:FIFO:MODE BLOCK
SENS:DATA:FIFO:MODE OVER
The commands to initiate the HP E1413 are:
INITiate[:IMMediate]
and
INITiate:CONTinuous ON
The INITiate commands move the HP E1313/E1413 from the trigger idle
state to the wait-for-trigger state. When initiated, the instrument is ready to
receive one ( INITiate[:IMMediate]
trigger events.
To initiate the instrument for the number of triggers specified with the
command:
TRIGger:COUNt
or
INIT INIT:IMM
To have the instrument continuously in the wait-for-trigger state:
INITiate:CONTinuous ON
If INITiate:CONTinuous is
module scans continuously until you execute
bit 10 (FIFO Overflowed), and
/power-on condition):
*RST
Select blocking mode.
Select overwrite mode.
) or more ( INITiate:CONTinuous ON
ON and TRIGger:SOURce
INITiate:CONTinuous OFF
Using the HP E1313/E1413
)
is IMMediate , the
.
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