Omega HHM15, Руководство пользователя, Страница: 11 / 16

9
5.When using 4000M
W
Range ; The 4000M
W
range has a fixed 20±1-count
offset in the reading. When the test leads are shorted together in this ranges,
the meter will display 020. The residual reading must be subtraceted from
the reading obtained in step 4 when this range is used. For example, when
measuring 1100M
W
on the 4000M
W
range, the display will read 1120, from
which the 20 residual is subtracted to obtain the actual resistance of
1100M
W
.
WARNING
The accuracy of the functions might be slightly affected, when exposed to
a radiated electromagnetic field environment, eg, radio, telephone or
similar.
Transistor Gain Measurements
1. Set the Function/Range switch to the desired hFE range (PNP or NPN type
transistor).
2. Never apply an external voltage to the hFE sockets. Damage to the meter
may result.
3. Plug the transistor directly into the hFE socket. The sockets are labeled E,
B and C for emitter, base, and collector.
4. Read the transistor hFE (dc gain) directly from the display.