Wavetek 85XT Manual do Operador descarregar pdf (Página 17)

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lead to the V•Ω Input and the black test lead to the COM Input. ❷ Set the

Function/range switch to position. ❸ Apply probe tip of red lead to the anode

and of black lead to the cathode of the diode. ❹ The meter’s display indicates the

forward voltage drop (approximately 0.6V for silicon diode or 0.4V for germanium

diode). Meter will display overload condition for an open diode. ➎ Reverse test lead

connections to the diode to perform a reverse bias test. Overload indicates a good diode.

Notes: Overload condition for both reverse and forward bias tests indicate an open

diode. A low voltage reading for both bias tests indicates a shorted diode. Bipolar

transistor junctions may be tested in the same manner described above.

D • Dioden- und Transistortest

Der Diodentest zeigt den Spannungsabfall über den Diodendurchgang

❶

Rotes

COM

V-

mA Cx Lx 20A

1000

750

200

200m

20M

FUSED

MAX

CAT.

27XT

1000V

750V

200mA MAX

MAX

CMOS

DC/ACMAX

HI/LO

ON/OFF

LOGIC

TTL

2000

200

20k

200k

20M

2000

20m

200m

20n

20m

10A

200

200m

20A/30sec

AnodeCathode

550 - 900mV

good/gut/bien/bon

Reverse Bias Test

good/gut/

bien/bon

bad/schlecht/mal/

mauvais

bad/schlecht/

mal/mauvais

<1V

Anode Cathode

red

rot

roja

rouge

red

rot

roja

rouge

Fig. 4

23XT-28XT.Man.08.00 9/11/00 7:03 PM Page 18

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