Tektronix PG 508 User Manual

Pu lse Duration . T h e time interval
between t he leadi ng
a nd traili n g e d ge of α pu lse at w h
ic
h the insta
n ta n eous
am p lit ud e r
eac
h
es 50 ο/ο of t he pea k p ulse am p litude .
P olarity . T
he d irectio n f r om t he baseli n e
of
t h e p
ulse
exc u rsio n , eit h er p
ositive-goi ng (+) or n egative-goi ng
R ingi n g . P erio d ic abe r ratio ns t h at
d
ampen
in time,
followi
ng t he oversh oot .
PER IOD :
R ange :

<20
ns

to

>200 m s

i n

seven
deca d e ste ps p
lus va
r
iable, wit h
overlap on
all
ra n ges . P erio d s
longer t h an 200 ms can be o b-
tai ned i n custom range p ositio n .
J itter :

<0 .1 ο/ο -i-50 p s .
D
EL AY
:
(Time b etween leadi ng transitio ns i n the paire d
p ulse
mode)
R ange :

<10 n s

to

>100 ms

i n

seve n
d ecade ste p s p lus variable, wit
h
overla p on all r an ges . Delays
longer t h an 100 ms ca n be o b-
tai n ed i n custom r an ge p osition .
Duty F
actor
:

Delays to at least 70 ο/ο of pu lse
periods for perio ds of 0 .2 μ s or
greater, d ecreasing to at least 50 ο/ο
for
α 20 ns p erio d .
seven
d ecade ste p s p l us variable, wit h
overla p on all r anges . D u ratio ns
lo n ger t han 100 ms can be o b-
tai n
ed
i n
custom range positio n .
An
ad d itio n al
positio
n
provides
du r atio ns of a pp roximately
50 ο
/ο
of
t h e p erio d setting for square wave
out p ut .
Duty F
actor :

P ulse d urations to at least 70 ο / ο
of
p ulse p erio ds for perio ds of
>0 .2 μ s, d ecreasing to at least 50 ο/ο
fo r α 20 n s p eriod .
Operating I n st r uctions---PG
508
R isetime . T h e time i n terval, at t he
ste p fu n ctio n lea d i n g
ed ge, for t h e p ulse to r ise from t h e 10 ο /
ο to 90 ο/ο am p litude
levels .
R ounding or U nde r shoot . T h e
roun d i ng of t he pu lse
corners at t he ed ges of α ste p f un ctio n .
Tilt
o
r
Slope . Α d istortio n of
an
ot h erwise
flat-toppe d
p ulse, c h aracterized
by eit h er α decli n e or α rise
of
t
he
p ulse top (see F lat n ess) .
J itter :

<0
.1% ο -1-50 ps .
PUL S
E
O U
TP
U
T :
Transitio
n Times : I nd e pe nd ently
adjustable lea d ing
a nd traili ng tra
n sitio n times from
<5 ns ty p ical (<7 n
s at some offset
a nd amplit u de levels) to >50 ms,
measure
d from t h e 10 ο /ο p oi n t to
t he
90 ο / ο poin t, i n six d ecade steps
p l u s
variable
.
V aria b le co n trols
wit h 100 :1 ra n ge (50
:1 on 5 n s)
p rovide overla p on
all
ra n ges
.
T r an sition times
lo n ge r than 50 ms
a r eob tai n able i n t h
e custo m ra nge
p ositio n .
Transitio
n Deviatio n from straig h t li ne
<5% ο
L i n earity :

between t he 10 ο/ο αη d 90 ο / ο poi n tfo r
tra n
sitio n times greater than 10 n s .
Am p litu d e :

P ulse h ig h
a nd low levels i n-
depe nd e n tly ad j usta b le
ove
r
α
+20 V ra n ge from α 50 Ω
low
reac
ta nce sou r ce . M aximu m p ulse
am p litu d e into α50 0 load is->10 .V
p eak
to peak ; minimum is <0 .5 V
p eak to peak . M
aximum p ulse
am p litu d e i n to an o p en circ u it
is
>20 Vp eak to p ea k ; minimum is
<1 .0 Vp eak to pea k . T h e preset
level con trols are
a dj ustable over
t h e same ra n ges .
Abe r ratio n
s :

<5 ο/ο , +50 m
V into α 50 Ω loa d
fo
r
pu lse levels betwee
n +5 V . May
i ncrease to <,10 ο/ο ,
+-50 m V for
pu
lse levels o u tsi de t h
is r a n ge .
TRIGG ER O
U
TP
UT :
Am p litu de :

>+2 V from 50 Ω .
J itter :
<-0 .1% to +50 ps .
D UR ATIO N
R an ge : <10 n s to >100
ms
i n

Tektronix PG 508 Specifications

General

Brand	Tektronix
Model	PG 508
Category	Pulse Generator
Language	English