Keithley 2461 Reference Manual

Model 2461
Interactive SourceMeter® Instrument Reference Manual Section 3:
Functions and features
2461-901-01 A/November 2015 3-121
When you select the Delta block, the following options are available.
Setting Description
Target Delta
The value against which the block compares the difference
between the measurements
Branch to Block
The block number of the trigger model block to execute when the
difference between the measurements is less than or equal to the
Target Delta
Measure Block
The block number of the measure or digitize block that makes the
measurements to be compared; if this is 0 or undefined, the trigger
model uses the previous measure or digitize block
Always block
When the trigger model reaches a branch-always block, it goes to the block that you specified.
When you select the always block, the following option is available.
Setting Description
Branch to Block
The block number to execute when the trigger model reaches the
always block
Once block
When the trigger model reaches a branch-once block, it goes to a specified block the first time it is
encountered in the trigger model. If it is encountered again, the trigger model ignores the block and
continues in the normal sequence.
You can use this block to create a bypass. For example, you might place a branch-once block before
a wait block to skip the wait block on the first pass of the trigger model.
The once block is reset when the trigger model reaches the idle state. Therefore, the branch-once
block will always execute the first time the trigger model encounters this block.
When you select the Once block, the following option is available.
Setting Description
Branch to Block
The block number to execute the first time the trigger model
reaches the Once block
Once excluded block
The branch-once-excluded block is ignored the first time the trigger model encounters it. After the first
encounter, the trigger model goes to the specified branching block.
The branch-once-excluded block is reset when the trigger model starts or is placed in idle.
When you select the once excluded block, the following option is available.
Setting Description
Branch to Block
The block number to execute after the first time the trigger model
reaches the once excluded block.

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