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Tektronix 576 Manual page 5

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S
pecification-Type 576
L
oo
p
ing Com
p
ensation
for e voltage can be a
pp
lie
d
. Amber
light on in
d
icates interloc k is open ;
R
e
d
light on in
d
icates voltage is be-
ing a
pp
lie
d
to test te rmi nals.
Cancels st ray ca
p
acitance between
collector test termi n al an
d
groun
d
i
n Stan
d
ar
d
Test
F
ixt ure an
d
all
Standa r
d
Test Fixt ure Accessories .
Step Generator
2Co ntinuoυs DC Output vs Ti me, Temperat ure and Duty Cycle. 2Α
conti nu o us DC output can be ac hieve
d
fo r an un limite
d
p
eriod up
to 30°C am bie nt. Betwee n 30 0C and 40°C
a
mb ient, 2Α co ntinuo us
DC operatio n
s
h ould be li mited to 15
m
inu tes or li m ite
d
to α 50%
duty cycle o r less. Α family of steps (such as 10 steps at 200 mA per
ste p ) will automatically
r
e
d
uce the du ty cycle to 50% even if genera-
te
d
co nti nu ously.
E
xceedi ng t he rati ng will temporarily shut off
power to the entire instrument bu t no damage will
r
esult.
R
ipple Plus
N
oise
0.5% ο or less of AMPLIT U DE switch
setting or 4 ηΑ ,
p
ea k to peak.
V
oltage
M
o
d
e
A
M
PL IT U D E
50 mV to 2
V,
in 1-2-5 se
q
uence.
Switch Range
M
axim u m Voltage
20 times AMPLIT U DE switch set-
(Ste
p
s an
d
Ai
d
i ng
ting .
Offset)
Maximum Current
At least 2 Α at 10 V or less,
d
e-
(Ste
p
s a n
d
Aiding
r
ating linearly to 10 mA at 40 V.
Offset)
Short Circuit Cur-
20 mA, 100 mA, 500 mA, +100%-
rent
L
imiti ng (Steps 0°/ ο; 2 Α +50% ο-0°/ ο; as selecte
d
by
an
d
Ai
d
i ng Offset)
CURRENT
L
IM IT switch.
Maximu m Op
p
osing 10 times A MPL IT U D E switc h set-
Offset
V
oltage
i ng.
Maximu m O
pp
osing
L
imite
d
betwee n 10 mA an
d
20
Current
mA
R
i
pp
le
P
lus
N
oise
0.5% ο or less of A
M
PL IT U DE switch
setting, or 2 mV,
p
ea k to peak.
Ste
p R
ates
( Fr ont
p
anel
R
AT E button labels in
pa rentheses.) 1 times ( .5Χ ), 2 times
(N O R
M
) an
d
4 times (2 Χ ) line fre-
q
uency . Steps occu r at zero collec-
tor voltage when .5 Χ or
N
O R
M
R
AT E buttons are
p
resse
d
, an
d
also
at peak voltage when 2Χ
R
AT E
button is
p
resse
d
. Ste
p
s occur at
collector voltage
p
eak an
d
at
normal
r
ate when .5 Χ
a
n
d
2Χ.
R
AT E buttons are
p
resse
d
together .
P
ulse
d
Ste
p
s
Pu lse
d
ste
p
s 80 μs or 300 μs wi
d
e
within +20°/ ο , -5°/ο
p
ro
d
uce
d
w
h en-
ever one of th e PULS E D ST EP S
buttons is
p
resse
d
.
P
ulse
d
ste
p
s can
be
p
ro
d
u ce
d
only at normal an
d
.5
times normal
rates. Collector
Supply mode automatically be-
comes DC when either the 300 μs
or 80 μs PULS E D ST EP S button is
p
resse
d
unless
P
OLAR ITY switch is
set to AC . If the 300 μs and 80 μs
PULSED STEP S buttons are
p
ress-
e
d
together, 300 μs pulse
d
steps are
p
ro
d
uce
d
, but collecto r su
pp
ly
mo
d
e
d
oes not change .
4ccuracy (Cu rrent or
Voltage Ste
p
s, I ncl u
d
-
ng Offset)
Incremental
W
ith in 5%
b
etween any two ste
p
s,
Accuracy
without .1 Χ ST EP MULT button
presse
d
; within 10% ο with .1 Χ ST EP
Μ ULT bu tton
p
r esse
d
.
Absolute
W
ith in 2°/ο of total out
p
ut, incl u
d
-
Accu racy
ing any amou nt of offset, or 1°/ ο of
AMPLIT U DE switch setting, whic h-
ever is greater.
Ste
p
(Current or
One times or 0 .1 times (with .1X
Voltage) Am
p
litu
d
es
ST EP MULT b utton
p
resse
d
) the
AM PL IT U D E switch setting.
DFF SET MU LT Con- Co ntinuously va riable from C
I
to 10
trol
R
ange
times AMPLITUDE switch setting,
either ai
d
ing or op
p
osing the ste
p
ge nerator
p
olarity.
Cur re nt Mode
A
M
PL IT U DE
200 mA to 50 ηΑ , in 1-2-5 se-
Switch Range
quence .
M
aximum Cu rrent
20 times A MPLIT U DE switch set-
(Ste
p
s an
d
Ai
d
ing
ting, exce
p
t 10 times switch setting
Offset ) 2
when switch is set to 200 mA, an
d
15 times switch setting when
t
h e
switch is set to 100 mA .
Maximum Voltage
At least 10 V.
(Ste
p
s an
d
Ai
d
ing
Offset)
M
aximum O
pp
osing
A
Wh ic hever is less : 10 times AMPL I-
Offset Current
TUDE switch setting, or between
10 mA an
d
20 mA .
M
aximum O
p
posing Between 1 V an
d
3 V.
Voltage

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