Tektronix 576 - Page 24

Operati n g Inst ru ctions-Ty p
e 576
.(
Β )
PA :
PA
h Ste p
h Step
ONEEMENOME
EMENESEEME
ιιιιΕΜιιιι
MMMMMEMMMM
MMMMMMM
~
Ιι Ί ~!~~~~ ι ύιία ~ ι
A RE

10 1
~~ ιιι
r = :
1
1 : ι
PER
Τ
Ε
Ρ
β
9m
ΡΕ R
DIV
DIV
PER
Μ
ο
ι
R
5t h Ste p
DIV
4t h Ste p
υΑ
100
Fig
. 2-18
. Meas u reme n t of β o f tra n sistor, ( Α ) Coa r se measu r ement
;
( Β )
O
ff setting o f d is pl ay a n d 1 Χm u lti p licat
i
o
n
o
f step a mp litude ;
(C) ί 0 Χ magni f ication of vertical display .
Stan d ar d Test
F
ixture
78 . Note t h e d is p lay of t h e c h aracteristic curves
wit h
t
h e emitter grounde d an d t h e current steps a pp
lie
d to
t h e
base (see Fig . 2-19 Α ) .
2-
1 6
77 . Set t h
e following
Ty p
e 576 controls to :
A
MPL IT U D E

20 μ .A
O FFS E T
Z ER O
mA
20
ρΑ
100
~ Α
RM S TEP
G EN
( N
OR
M ) ; ( Β ) T erminal Se l ecto r switc h set to EMITTER
TERM S
TEP G EN .
79 . Set t h e LEF T-O FF-R IG H T switc h to O FF an d
t h e
ST EP F A M I L Y b u tton to O FF . Ta k e α patc h cord wit h
banana plugs on eac h en d and connect it between t h e ST EP
G
EN
O
U T PU T connector an d t h e ΕΧΤ BAS E OR EMIT
I NPU T connector .
80 . Set t h
e
following Typ
e 576 controls to :
ST
EP F A M Ι L Y

ON
LEF T-O FF-R IG H T R IG H T
Terminal Selector

BAS E T ERM OPEN
(O R ΕΧΤ
)
Note α dis p lay similar to t h at
seen in ste p 78 .
81 . Set t h e following Ty p
e 576 controls to :
VER TICA
L 1 ηΑ EM ITT ER
M OD E
LE A K AG E
V A RIA BLE CO
LLE C-

Fu lly Countercloc k wise
TO R S
UPPL Y
ST EP F A M I L
Y

O
FF
R emove t h
e p atc h cor d .
M ONES
MEN
ME
MOM M ME 1 1
MEMIMEM
ΙΒ = 200
~g =250
601A
2160
ι
'
=M0,400
'mom
-
I
~
7 2 7 0
s~sss
Ρ
PER
DIV
ρΑ
1111
F--
F --
~ssssssss
ι
~sssss~ss~
β
9ER
Εν
DIV
( Α )
Co mm o n Em itte r F amily
ν
Ε
NEE
Ε
Τ
D
Ιν
"A
ΜΕΝΕΕΜίίι
r
R
τ
DIV
PER
Μ
ίίί ~~
ίιί r
-4
Μ
Ο Ο
R R
Ζ
DIV
L
Ζ
DIV
ΡΕ R
Ε
5
lilt 1111 ,
PER
τ
Ε Ρ
ιι
Α
~ ιωιιι
~ ιιι r
Ρ
β
ιιιιιιιιιι
β
Q
ΡΕ R
DIV
ιιιιιιι r
ι
PE R
DIV
9
( Β )
Commo n
Base
F amily
ν
Ε
ρ
τ
Soo
PA
Fi g .
2-19
. ( Α
) T erm i nal
Selector
switc h set to BASE T
Ε
Τ
ΜΑ
DIV
MENEM 0000
R
Τ
D Ιν
PER
Μ
ο
Ι
ι
Ι
.
ι /
ιιιιο
R ΝΕΈΈ
'
PER
Μ
ο
R
ν
F-
sss~
οΙν
PER
Τ
So
Ι
- 1
PER
Τ