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3-16

370B User Manual

. The following ten steps require the optional FET adapter. If you do not

have an adapter on hand, either proceed to step 32, or insert a long-lead FET

into the transistor adapter with the source, gate, and drain leads corresponding

to the emitter, base and collector leads.

22. Open the protective cover, then remove the transistor adapter. (Leave the

transistor in the adapter). Install the A1009 FET adapter (optional) in the

front panel jacks and place an N-channel junction FET into the right test

socket of the adapter. If you have no A1009 FET adapter, use the A1007

adapter, inserting D,G, and S leads into C, B, and E sockets, respectively.

23. Close the protective cover.

24. Change the Memory Index to 1, then press the Setup RECALL button to

initialize the 370B.

Figure 3-11: I

vs. V

25. Set the 370B controls as follows:

LEFTĆRIGHTĆSTANDBY RIGHT

VERTICAL CURRENT/DIV About 1/10 of the rated drain current

Step Generator Output Mode VOLTAGE

STEP AMPLITUDE To appropriate value (depending on the

characteristic of the FET)

Collector Supply

MAX PEAK POWER WATTS

Within the power dissipation rating of the

transistor

26. Set the OUTPUTS breaker to the ENABLED position.

Tektronix 370B User Manual

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