Keithley Series 2600

3-12
SECTION 3
Bipolar Transistor Tests
vstart • : 0V
vstop • : 10V
vsteps • : 100
After setup, the output is zeroed and enabled. A linear voltage
sweep from the start to the stop value is performed. At each step,
the collector-emitter current (I
CEO
) is measured.
Upon sweep completion, the output is disabled and the data is
written to the Instrument Console window of TSB.
3.6.5 Modifying Program 8
For different sweep values, simply modify the vstart , vstop ,
and vstep values and source range parameter as appropriate.
In order to speed up the test procedure, you may wish to use
a faster integration period. Simply change the l _ nplc value.
Note, however, that changing this parameter may result in unac-
ceptable reading noise.
I
CEO
vs. V
CEO
(2N3904)
V
CEO
(Volts)
I
CEO
vs. V
CEO
I
CEO
(Amps)
3.50E–10
3.00E–10
2.50E–10
2.00E–10
1.50E–10
1.00E–10
5.00E–11
0.00E+00
0 2 4 6 8 10
Figure 3-8. Program 8 results: I
CEO
vs. V
CEO