Tektronix 576 - Page 29

1 Error in vo l tage must be ca l culated . See Horizontal
M eas u rement
in D eflection Factor section .
2 VEB i nd icates α measu
r
eme
n t of fo r ward voltage b ase-emitter,
wit h t h e h orizo n tal voltage se n si n g lea d s
reversed
.
-(
ΡΝΡ )
WMENNERROF
FIN
91 A r ~~

A ,r
ι
0
ι ~ ίί ~~
i ι ίίιίί
UREENAMONE
F ig . 2-22
.
O u tp
u t of Collector
S
uppl y for t h ree settings o f
PO-
LARITY
switc h .
is
cont r olle d by placing α resistor, selecte d from t he
S ER I ES RE SISTO R S, in
se r ies wit h t he Collector Su pp ly
o u t pu t . T h e series r
esistance limits t he amount of current
w h ic h can be
con d ucte d by t he Collector Su pp ly . In setting
t h e p ea k
power outpu t u sing t he PEAK P O WER W ATTS
switc h , t he p r op er series resistor is a u tomatically selecte d .
If t he p ea k voltage r ange is ch ange d
w
h ile t h
e
MAX PEAK
TA BLE 2-4
M easureme n ts M a d e by t he Ty p e 576 Dis p lay
O p erati n g I n st r uctions- Ty p e 576
V O L TS an d t he PEAK P O WER W ATTS switc h es are inter-
loc k e d
,
α
new series resistor is ch osen w h ic h will p rovi d e
t he same p ea k p ower outp ut .
T
he Collecto r Su pp ly P O L A R ITY switc h d etermines t he
polarity of t he Collecto r Su pp ly outp ut and t
he Ste p
Generator outp ut . It also
provi d es
an
initial d isplay p osition
on t he CR T graticule as
d iscusse d in t he section on p osi-
tioning . Wh en t he
P
O L A R ITY switc
h
is
set
to
+( ΝΡΝ ) t he
Collector Su pp ly output is α p ositive-going full wave recti-
fie d si n e wave and t
h e
Ste
p Generato r outp ut is p ositive-
going . Wh en t h e switc h is set to -( ΡΝΡ ) t he Collecto
r
Su p -
p ly outp ut is α negative-going full wave rectifie d sine wave
an d t he Ste p Generator out
p ut is
also
negative-goi ng . T h e
AC p ositio n of t
h e P
O
L A R ITY switc h p r ovi d es α Collecto r
Supp ly outp ut
w h ic h is an u nrectifie d sine wave, an d t h e
Step Generator outp ut is p ositive-goi n g . Α negative-going
Step Generator ou t pu t ca n be obtai ned i n t h is case by
p ressing t he STEP/OFF S E T P O L A R ITY I NVER T button .
As noted on t he front pan el, w hen t he AC position is being
use d , t he M OD E switc h s h oul d be set to N O RM an d t h
e
Step Generator r ate to .5 Χ .
T h e M OD E switc h d ete r mines w
h
et
h er
t
h e Collector
Su pp ly outp ut voltage will be α voltage
swee p o r α DC
voltage . Wh en t he M OD E switc h is set to N O RM t h
e out
p
ut
is α re p etitive voltage sweep va r ying from 0 volts to t
h e
2- 2 1
Switch Setti n gs
M easure d by Dis p lay
VER TICA L H O R IZO N TA L Termi n al Selector V ertically
H
orizo n tally
COLLECTOR COLLECTOR EMITTER GROUNDED IC
VCE
CO
LLE CTO R B AS E EMITTER G R O UN D E D IC V BE
CO LLE CTO R ST
EP
G
EN EM ITT ER GR O UN DE D IC ΙΒ
or V BE
COLLECTOR
COLLECTOR BASE GROUNDED IC V ςΒ
COLLECTOR
BASE BASE GROUNDED
IC
VEB 2
CO LLE CTO R ST
EP
G EN
B AS E GRO UN DE D IC ΙΒ o r
V ΕΒ 2
EMITTER
COLLECTOR EMITTER G ROUNDED ΙΕ
V ςΕ 1
EMITTER COLLECTOR BASE G ROUNDED
ΙΒ VςΒ 1
ST
EP G EN CO LLE CTO R EM ITT ER GRO UN D
E D ΙΒ
or
V
ΒΕ
VC E
ST EP G EN B AS E EM ITT ER GR O
UN DE D ΙΒ o r V ΒΕ V BE
ST EP G EN
CO LLE CTO R B AS E GRO UN D E D ΙΒ or
V ΒΕ
V ςΒ
ST
EP
G EN
B AS E Ι B AS E GRO UN DE D ΙΒ or
V ΕΒ 2
Ι
V ΕΒ 2