50 34410A/11A/L4411A User’s Guide
2 Features and Functions
Accessing Reading Memory
Reading memory is accessed directly from the remote interface only.
The multimeter’s reading memory is a first–in–first–out (FIFO) buffer holding up to
50,000 readings (34410A) or 1 million readings (34411A/L4411A). The oldest readings
are preserved.
• Remote Interface Operation: The following command transfers readings stored in
non–volatile memory into the multimeter’s output buffer, from where you can read
them into your computer:
FETCh?
The following command will obtain whatever readings are present in NVMEM, and
erase them as they are read:
R?
Refer to the Keysight 34410A/11A/L4411A Programmer’s Reference Help for
a complete description and syntax for these commands.
Front/Rear Input Terminal Switching (34410A/11A)
• Front Panel Operation: The Front/Rear switch manually selects the set of input
terminals (front or rear) that is connected internally for measurements. Both sets are
equivalent and include Sense (LO and HI), Input (LO and HI), and Current (
I
)
terminals. The Rear annunciator is lit when the rear inputs are selected. See “The
Front Panel at a Glance (34410A/11A)” on page 8, for the location of the Front/Rear
switch. The Front/Rear switch has no effect on the Ext Trig or VM Comp
connectors.
• Remote Interface Operation: The Front/Rear switch is manually switchable only,
and cannot be controlled from the remote interface. The following query returns the
current switch setting:
ROUTe:TERMinals?
The query returns either “FRON” or “REAR”
Do not change the position of the Front/Rear switch while signals are present on
either the front or rear set of terminals. Switching while high voltages or currents
are present may cause instrument damage, and may increase the risk of electric
shock.
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