Set Amplitudes - Keithley 2520 User Manual

Pulsed laser diode test system
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14-34
SCPI Command Reference

Set amplitudes

[:IMMediate][:AMPLitude] <n>
:SOURce[1]:CURRent[:LEVel][:IMMediate][:AMPLitude] <n> Set fixed current source amplitude
Parameters
Query
Description
NOTE
NOTE
LOW <n>
:SOURce[1]:CURRent[:LEVel]:LOW <n>
Parameters
For example, if you expect to source levels around 300mA, send the fol-
lowing command:
:SOURce1:CURRent:RANGe 0.3
The above command will select the 500mA range for the laser diode
current source.
As listed in Parameters, you can also use the MINimum, MAXimum
and DEFault parameters to manually select the source range. The UP
parameter selects the next higher source range, while DOWN selects the
next lower source range.
<n> =
0 to 5.0
DEFault
MINimum
MAXimum
:CURRent?
:CURRent? DEFault
:CURRent? MINimum
:CURRent? MAXimum
This command is used to immediately update the amplitude of a fixed
source for both DC and pulse functions (with the pulse function, the
amplitude is the high pulse level). This command is not valid if the list
or sweep mode is selected.
The sourcing :MODE command is used to select a fixed source. See
sourcing mode," page
14-32.
The specified amplitude cannot exceed the selected source range. For
example, if the source is on the 500mA range, you will not be able to set
the source amplitude to 1A.
For the DC function, the current cannot be set above 1A.
<n> =
0 to 0.150
DEFault
MINimum
MAXimum
Model 2520 User's Manual
Set source amplitude (amps)
0A
0A
5.0A
Query programmed source amplitude
Query *RST default amplitude
Query lowest allowable amplitude
Query highest allowable amplitude
Set current pulse low amplitude
Set pulse low amplitude (amps)
0A
0A
0.150A
"Select

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