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SeCTIon 6
High Power Tests
function 'RunHighCurrent(sourcei,points)', where
sourcei is the desired current value and points is the
number of voltage measurements .
9 .
In the program '
KI2602Example_High_Current.tsp', the func-
tion RunHighCurrent(sourcei,points) is created .
•
represents the current value delivered to the
sourcei
DUT . Note that the programmed current value for each
SMU is half the isource value .
•
represents the number of voltage measurements
points
acquired
If you wanted to source 2A total to the DUT and collect 100
voltage measurements, you would send
RunHighCurrent(2, 100) to the instrument .
10 .
The sources will be enabled, and the current source and
voltage measurements will be executed .
11 .
Once the measurements have been completed, the data will
be presented in the Instrument Console window of TSB .
6.1.3 Program 15 Description
After the SMUs are returned to default conditions, SMUA is con-
figured as follows:
•
Source I
•
40V compliance, autorange
•
Local sense
•
1 NPLC integration rate
•
: Desired DUT current
sourcei
•
: Number of points to measure
points
Next, SMUB is set up to operate in the following manner:
•
Source I
•
Local sensing
•
40V, autorange
•
: Desired DUT current
sourcei
After the instrument is set up, the outputs are zeroed and enabled .
Each SMU performs a DC current source and SMUA begins to
measure the voltage . When the data collection has reached the
desired number of points, the outputs are disabled and the voltage
data is printed to the Instrument Console of TSB .
6.2 Instrument Connections
If either SMU reaches a compliance state, the instru-
ment, device, or both could be damaged. To avoid
this, set the compliance value to the maximum
6-2
WARNING
for your instrument and avoid open or other high
resistance states for the SMUs when in Current
Source mode.
6.2.1 Program 16 Test Configuration
Figure 6-2 shows the test configuration for Program 16: SMUA
and SMUB outputs are wired in series, SMUA Lo to SMUB Hi,
SMUA Hi to DUT, SMUB Lo to DUT . This effectively doubles the
maximum voltage output and can deliver a total of 80V at 1A using
a Model 2602 System SourceMeter instrument .
6.2.2 example Program 16: High Voltage
Source and Current Measure
Program 16 demonstrates how to deliver higher voltage sourcing
values using a dual-channel System SourceMeter instrument .
Follow these steps to use this program .
1 .
With the power off, connect the dual-channel Instrument to
the computer's IEEE-488 interface .
2 .
Connect the test fixture to both units using appropriate
cables .
3 .
Turn on the Instrument and allow the unit to warm up for two
hours for rated accuracy .
4 .
Turn on the computer and start Test Script Builder (TSB) . Once
the program has started, open a session by connecting to the
instrument . For details on how to use TSB, see the Series 2600
Reference Manual .
5 .
You can simply copy and paste the code from Appendix A in
this guide into the TSB script editing window
manually enter the code from the appendix, or import the TSP
Output
Output
HI
LO
SMUB
Series 2600
System SourceMeter
Figure 6-2. High voltage (SMUs in series)
(Program
Output
Output
LO
HI
SMUA
DUT
16),
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