Measuring Hfe - Radio Shack 22-812A Manual

Notes:
• if the function dial is set to dBm /
sensiti�ity when measuring a new signal, press SELECT to select the ACV function
then press Hz/DUTY/WIDTH to select the frequency function.
• To change back to ACV measurement, press SELECT once then press SELECT again
to select the AC V display mode (dBm or �olts). press
back to the AC A measurement function.
• if the meter is set to measure current, it cannot measure the frequency of a signal with
DC bias.
Measuring
You can use the meter to measure the DC gain of small-signal, bipolar transistors
h
6-26-07
in the Fe range of 1000.
CAUTION: To a�oid damaging the meter, do not try to check a transistor if you do
not know its type and pinout.
1. Set the function dial to
2. Unplug both test leads from the meter, then
slide down the guard on the front of the
meter.
3. insert the transistor you want to check into
h
the
FE
transistor with the labels on the socket. The
transistor's �alue appears.
h
FE
h
FE
socket, matching the pinout of the
V and you want to set the meter for ma�imum
press SELECT twice to set the meter
.
1
Taking Measurements
h
FE Socket - insert a transistor
to check gain.