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9
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.
Frequency Measurements
1. Set the Function/Range switch to the Hz position.
2. Connect the red test lead to the "V
W
" jack and the black test lead to the
"COM" jack.
3. Connect the test leads to the point of measurement and read the frequency
from the display.
Logic Measurements
1. Set the Function/Range switch to the LOGIC position.
2. Connect the red test lead to the "V
W
" jack and the black test lead to the
"COM" jack.
3. Connect the red test lead to the test point and the black lead to the common
buss of the logic circuit.
4. A " "on the display indicates TTL logic high and a "
" indicates a TTL
logic low. Both indicators are on when the point of measurement is toggling
high and low.
Содержание HHM19C
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