Tektronix 576 - Page 126

(±10% of 0 .1 volts)
for eac h p osition of t he Com p arison
V oltage switc
h .
q .
Turn t he Ty pe 576 A MPL IT UD E switc h an d t
h e Cali-
bration
F ixture Ste p Generato r switc h , toget h er, t h roug h -
out t h
eir ranges .
r . C HE
CK F OR -Tent h ste p on test oscillosco p
e cente r
h
orizontal graticule line ±2 d ivisions (±2% of total
outp ut) .
s . F or t h
e 1 mA, 5 μΑ , 1 V an d 2 V
positions, repeat
p arts k t h roug h ρ .
26 . C h ec k Offset M ulti p lier
α . Set t he followi ng Ty p
e
576
controls to :
O FF S E T MUL T

0 .00
O FF S E T

AID
A MPL IT U D E

1 V
ST EP MUL T .1
Χ

R elease d
b .
Set t he Calib r ation F ixtu r e Step Generato r switc
h to
1 V .
c
.
Set t h e following test oscilloscope controls to :
M illivolts/cm

50
V c R ange

+11
Com p arison V oltage

10 .000
d . P osition t h
e
tent
h
step on
t he test oscillosco pe cente r
ho r izontal graticule line
.
e . Tu r n t h
e
Ty p
e
576 O FF S
E
T MUL
T control t h roug h -
out its range .
f . C HE C K F O R -Step at test oscillosco p
e center h ori-
zon tal line for
eac h complete revol u tion of t he O FF SET
Μ UL T control
.
g .
Set t h e Ty p e 576 O FF SE T MUL T control to
10 .00 .
27 . C h ec k M aximum Curre n t Out p ut in
Current
M od e
α
. Set t he Ty pe 576 A MPL IT UD E switc h and t
he
Cali-
bration F ixture Ste p Generato r switc h as s h own
in Table
5-4 .
b . Set t he following test
oscillosco p e con trols to :
c
. F or each grou p of settings s h own i n Table 5-4,
p ress
t
he Ty pe 576 Z ER OO FF SE T button and ad ju st
t he test
oscilloscope M illivolts/Cm V ariable for t
h ree d ivisions of
d eflectio n on t h e Test oscillosco pe C RT . W it
h
3
divisions of
d eflectio n , p osition t he ze r o ste p on t
he bottom h orizo n tal
graticule line an d p ress t he Type 576 AID O FF S
ET
bu
tton .
A M PL IT U
D E
Performa n
ce
C hec k /Calib r ation-Ty p e 576
d . C HE CK F O R -Dis p lay of ste p family wit
h
te
n t h ste p
offset to t he to p h orizo n tal g r aticule line of t h e g r aticule
.
O FF S ET
TA BLE 5-4
C h ec k M axim u m Cu rr e n t
i n Cu rr en t M ode
ι T en t h step
s h o ul d be at least 4 .5 d i v i sions from bottom horizontal
g r atic u le line .
28 . C h ec
k R everse Current and V oltage L imits
α . Set t h
e following Ty pe 576 controls to :
2 mA
O PP OS E
b . Set t h e Calibration F ixt u re Ste
p Generator switc h to
10 mA .
c . Set t he test oscillosco pe M illivolts/Cm switc h to 10 .
d . C HE CK
F
O R
-Current limit between o ne and two
d ivisions below
t h e tent h ste p (see F ig . 5-11 Α ) .
ΙΒ 1
SEEN
MEN
N .. . ...... . .....
:MW

on
0
ONE
MENOMMENNN
OMENS MONO
MEMESEEMEN
00
MENEM
F ig .
5-11
.

T est oscillosco p e disp l ay of r everse voltage and cu rrent
li mi t : ( Α ) r everse cu rrent limit ; ( Β ) r everse voltage limit .
5-
1 9
A MPL IT UD E Ste p Ge ne r ator
100
mA'
200 mA
1 mA
2 mA
.1 mA .2
mA
5 μΑ
10 μΑ
Time/Cm
5 ms
V c R ange 0
Μ ί l l ivol ts/cm 20
I npu t Atten u ation 100