Reference
3-24
370B User Manual
1. Change the Memory Index number to 1 , then press the Setup RECALL
button to initialize the 370B.
2. Set the 370B controls as follows:
LEFTĆRIGHTĆSTANDBY RIGHT
VERTICAL CURRENT/DIV About 1/10 of the rated collector current
HORIZONTAL VOLTS/DIV 100 mV BASE/EMITTER
Step Generator
STEP AMPLITUDE 100 mA
NUMBER OF STEPS 1
ACQ MODE HORIZ ENV
3. Set the OUTPUTS breaker to the ENABLED position.
Figure 3-17: Stored envelope display.
4. Turn the VARIABLE COLLECTOR SUPPLY clockwise. Note the
envelope display of the collector current vs base–emitter voltage for a value
of base current, The display shows a horizontal min/max envelope of the
storage display (see Figure 3–17). If you set the ACQ MODE to VERT ENV,
a vertical envelope is displayed on the CRT.
5. Set the ACQ MODE to AV G . The averaging count (1 through 16) is
displayed at the upper right corner of the CRT (see Figure 3–18), and the
acquired curves are averaged.
ACQ Mode (STORE Mode)
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