Tektronix 576 - Page 22

O perating
I n st r uctio n s-Ty p e 576
( Β
)

1 13
V s - V gE
Έ
Ρ
DIV
PER
Η
ο
Ζ
DIV
PER
1 π 00
so
ρΑ
F ig . 2-14 . ( Α ) ΙΒ vs . V ςΕ , Ιη @ 50 μΑ p er
division ; ( Β
) ΙΒ vs .
V gE,
ΙΒ @ 50 μΑ per division .
59 . P ress bot h t he 2 Χ R AT E an d .5 Χ R AT
E
b
u ttons .
N ote t h at t he step rate is normal,
bu t t h at t he steps occur
2- 1
4
at t he p ea k of eac
h
collector
sweep , rat h er t h
an
at t he
beginning of
eac h collector sweep, as w hen t h e N O RM
R AT E button is p
us he
d
.
60 .
P ress th e SI N G LE ST EP F A M I L Y button .
P
ress it
agai
n . N ote t h at eac h time the SI N G LE button is p
resse
d , α
single family ofc h aracteristic curves
is
d
is p
laye
d
an
d t h en
th e Ste p Gene r ator
turns off .
ols to :
N ote t h at t h e collector sup p ly is in t h e DCmo d e an d
t h at eac h ste p is in t he form of α p ulse . (See F ig . 2-16 Α .)
( R ead j ustment of t he I N T EN SITY control may be neces-
sary .)
62 . P ress t he 80 μs bu tton . N ote t
h
at t
h e
du
ration of
each p ulse d ste p is re d uce d .
63 . P ress both t he 300 ( ι s an d t h
e
80 μs buttons
. N ote
t h at t h e Collector Su pp ly is in t
h e normal
mo
de and t h e
ste ps are occ u rring at t
he pea k of
t
he collector sweep, wit h
α d u r ation as observe d
in ste p 61 (see F ig . 2-1 6B) .
;( Α )
MENEM
ι
έ
C~
ΤηΑ
DIV
PFR
Ο
R
Ο
R
1
Ζ
DIV
Ρς R
F ig . 2-16 . 300
μ
s
PUL S ED S TEP S, ( Α ) DC m ode ; ( Β ) N orma l
mode
.
Ι ςν $ . Ι Β
MEMEMEM
5
mA
2
ν
ΡΕ R
DIV
PER
Ι
1
MEN
Ε
51
Ρ ΡΑ
Μ
Ο
R
F__
MMMMMMMMMM
""""""""""
EMOMMENNOM
ΡΕ R
ι __
MENNEN ON
" """""""
Λ
~m
PER
100
DIV
Ρ
ρΑ
i (
Β )
MENEM
N ormal M o de
β
I-
Ι
EMMMEEMENE
ΤηΑ
DIV
Ελ
100
ο IV
'
-
MEMMEMNEEM
PER
Η
ι
ι
Ε
DIV
PER
Μ
ο
R
DIV
1 ΡΕ R
s
ι
ό
ι
β
Ι
F--
9ER
PER
DI V
F -~
Ε
50
Ρ ρΑ 61 . Set t h e following Type576 cont
ST EP F A M I L Y REP ON
PER
DIV
R AT E N O RM
( Α )
ΙΒ vs .
V ςΕ
PUL SE D ST EP S 300 μ s
Fi g . 2-15 . 1 ς
vs .
1g, ΙΒ @ 50 μΑ pe r division .
Ε
50
Ρ
υΑ
β
58 . P ress th e N O RM R AT E button an d t
h en
t
h e 2Χ
PER
100
R
AT
E b u tton . N ote t h at t he ste p rate is faster t h an t
he
DIV
normal rate .