Tektronix 576 - Page 40

Ope r ating Inst ru ctions-Type 576
VZ and Ι R
1F
and VF
2- 3 2
Some Commo n
M
eas u rements
To
measure Zener voltage o r reverse cur r ent, p ut t h e cat h o deof t he dio de in t h e emitter
termi n al of t he test soc k et an d t he ano de of t he diode in t he collector terminal . Apply
voltage to t he device wit h t he VA R IA BLE CO LLE CTO R S UPPL Y con trol . For α
more
accurate measurement of Zener voltage, see ste p s 42 t h roug
h
46 of
t h e First Time
Operation instructions . For measureme n ts
of small amounts of reverse current, set t he
MOD
E
switc h to LE A
K
AG
E (EM ITT ER
C
URRE N T) .
Curre n t and voltage in t h e forward directio
n
are
meas u red in t he same man n er as in t he
reverse
direction except t h at t he P
O
L A R ITY switc h is set to
+(
ΝΡΝ ) . For α dis p lay of
currents and voltages in both
di
r ectio n s, set t he POLARITY switc h to AC .
T U N NEL DIOD E S A ND BAC K DIOD ES
R e q ui r ed Ty p
e
576
Control Settings
®
Ν" ΕΕΝΜ ®
NEENNEEMEN
ONNEERNMER
000®02 "" /Ε
MMMMOMMMEN
ONNOMENNON
MMMMEMMMME
NOMMERNMEN
MMMMMMMMMM
IF
vs . V F
q
'MA
"εΡ
Ν
Ρ
s
Ρ
Ρ
Control R eq uire d Setti ng
HO R IZO N TA L CO LLE CTO R
PEAK P O WER W ATTS L
ess t han maximum p ower rating of d evice
P OL A R ITY
+(
ΝΡΝ
)
Termi n al Selector
EM ITT ER GR O UN D E D