User Manual

5-12 Pulse Mode Operation (Model 2430 only) 2400 Series SourceMeter
®
User’s Manual
Pulse-measure considerations
Measurement speed
Measurement speed for the Pulse Mode can be set from 0.004 to 0.100 PLC. If
the speed setting while in the DC Mode is >0.10 PLC, it will change to 0.004 when
the Pulse Mode is selected. If the speed setting is <0.10 PLC, that setting will be
retained when the Pulse Mode is selected. If the Pulse Mode speed setting is
<0.01, it will change to 0.01 when the DC Mode is selected.
For remote operation, the parameter value for the [:SENSe] ... :NPLC <b> com-
mands is limited to a maximum value of 0.10. Details are provided in Section 7,
“Speed.”
Filter
Filtering cannot be used while the Model 2430 is in the Pulse Mode. You can con-
figure the filter, but you cannot enable it. Pressing the FILTER key displays the
“Invalid in Pulse Mode!” message. For remote operation, the [:SENSe]:AVER-
age[:STATe] <b> command (which is used to enable the filter) causes error +831:
Invalid in Pulse Mode.
Auto range
Measurement auto range cannot be used (enabled) while in the Pulse Mode.
Pressing the AUTO range key displays the “Invalid in Pulse Mode!” message. For
remote operation, the [:SENSe] ... :RANGe:AUTO <b> commands (which are
used to enable/disable auto range) cause error +831: Invalid in Pulse Mode.
Concurrent measurements
For remote operation, more than one function can be measured simultaneously
while in the DC Mode. However, in the Pulse Mode, only one function can be
measured for each pulse. The [:SENSe]:FUNCtion:CONCurrent <b> command
(which enables/disables concurrent measurements) causes error +831: Invalid in
Pulse Mode. The [:SENSe]:FUNCtion[:ON]:ALL command will select the ohms
function. See Section 18, “SENSe1 subsystem” - “Select measurement functions,”
for details on concurrent measurements.
Ohms source readback
For DC Mode operation, ohms source readback can be enabled. The instrument
measures the actual source value for ohms measurement and then uses that