Keithley 2461 Reference Manual

Section
6: SCPI command reference Model 2461 Interactive SourceMeter® Instrument
Reference Manual
6-96 2461-901-01 A/November 2015
Details
When you set this command, it configures the instrument as either a voltage source or a current
source.
Example
SOUR:FUNC CURR
SOUR:FUNC?
Set the source function of the instrument to be a
current source and query the source function.
Output:
CURR
Also see
None
:SOURce[1]:<function>:PROTection[:LEVel]
This command sets the overvoltage protection setting of the source output.
Type Affected by Where saved Default value
Command and query
Recall settings
Instrument reset
Power cycle
Source configuration list
Save settings
Source configuration list
NONE
Usage
:SOURce[1]:VOLTage:PROTection[:LEVel] <n>
:SOURce[1]:VOLTage:PROTection[:LEVel]?
<n>
The overvoltage protection level, set as <n>, where <n> is PROT2,
PROT5
,
PROT10
,
PROT20
,
PROT40
,
PROT60
,
PROT80
, or
NONE
Details
Overvoltage protection restricts the maximum voltage level that the instrument can source. It is in
effect when either current or voltage is sourced.
This protection is in effect for both positive and negative output voltages.
When this attribute is used in a test sequence, it should be set before turning the source on.
Even with the overvoltage protection set to the lowest value (2 V), never touch anything
connected to the terminals of the Model 2461 when the output is on. Always assume that a
hazardous voltage (greater than 30 V
RMS
) is present when the output is on. To prevent
damage to the device under test or external circuitry, do not set the voltage source to levels
that exceed the value that is set for overvoltage protection.
Example
SOUR:VOLT:PROT PROT40
SOUR:VOLT:PROT?
Set the voltage source protection to 40 V
and query the value. The output is:
PROT40
Also see
Overvoltage protection (on page 2-121)

Keithley 2461 Specifications

General

Maximum Current	7 A
Power	100 W
Resolution	6.5 digits
Source Measure Unit (SMU)	Yes
DC Voltage	100 V
Maximum Voltage	100 V
Display	5-inch capacitive touchscreen
Connectivity	USB, GPIB
Software	TSP
DC Current	7 A
Current Source Range	0 to 7 A
Voltage Measurement Range	100 mV to 100 V
Current Measurement Range	10 nA to 7 A
Voltage Measurement Resolution	100 nV