Tektronix 7a11 Instruction Manual page 45

P erformance Check/Calibration-7A11
CA
L
I
BR
ATIO
N
I
N
D
E
X A
N
D
RE
CO
R
D
7 Α 11 Serial N um
b
er :
Calibrator :
Date Calibrated :
1 . C
h
ec
k
/Ad
j ust P ower Sup p ly V oltages P age 5-7
+8 .7 V
±87 m
V , (+8 .7 V
AD
JU
ST R 500) ; -8 .7
V
±87
m
V
, (-8 .7
V
AD
JU
ST
R
540) ; -7 .1
V
±71 m
V
, -7
V
±0 .35 V, +7 Ν ±0 .35 V, +2 .5 V ±0 .25 V,
(not ad
j
ust-
able) .
2 . C h
ec
k
/Ad
j ust Ste p Attenuator
B
alance P
age 5-7
W it h front-panel ST
EP
ΑΤΤΕΝ
B
A
L
at mi d range, ad-
j
ust ST
EP
ΑΤΤΕΝ
B
A
L C EN
T
ER
I N G
R
120 for
minimum trace s
h
ift accom p anying PO
L
A
R ITY + UP
/
I
NVER
T sw itc
h
ing .
3 . C
h
ec
k
/Ad
j
ust P osition Centering ; C
h
ec
k
P
OSITIO
N R
ange
P age 5-8
W it
h
terminals
F an d AK d isconnecte d , a d j u st
P OSITIO
N C EN
T
ER
I
N
G
R
240 to set trace to center
of graticule . U sing O
FF
S
E
T, c
h
ec
k
for 8 ±0 .8 d ivisions
u p war d and do w nward d eflection range of
P
OSITIO N
control .
4 . C
h
ec
k
/A d
j
ust M id-
F
re
q
uency R es p onse
P age 5-9
At 10 m
V
and 1 ms/d iv, wit
h 200 H z fast rise sq uare
wave app lie d from Ty pe 106, ad
j
ust
R
211 an d BOOT-
STRAP TIME CO
N STA N T
R
345 for optimum s
q
uare-
ness at to p left corner. Aberrations wit
h
in ±1°/ ο pea
k
to
p ea
k
.
5 . C
h
ec
k
/Ad
j
ust 93 Ω Termination
P age 5-9
At 10 m
V
and 5 ns/d ivision, wit h
100
kH z fast rise
sq uare wave a pp lied from Ty p e 106, a d j
ust TERMINA-
TION
R
45 (in Probe) for minimum ste p at a p
proxi-
mately 25 ns after start of step function .
6 . C
h
ec
k
/Ad
j ust Gain ; C h ec
k V
ariable P
age 5-11
Gain
R
ange
Ad
j
ust GAI
N
(front p anel) at 0 .1
V
/DI
V
. C h
ec
k
all
positions for accuracy wit h
in 2ο / ο using Calibrator ac-
curate to wit
h
in 0.25%, or c
h
ec
k
for accuracy wit
h
in
3ο / ο using Oscillosco p e Calibrator .
7 . C
h
ec
k
/A d
j
ust Offset
V
oltage P age 5-12
5-4
O
FF
S
E
T O
U
T voltage magnitu d e wit
h
in 0 .5 m
V
+1 ο % ο
of in p ut voltage being offset . O
FF
S
E
T
R
A
N
G
E
of -1
V -
~ 10% to +1
V
±10ο % ο .
8. C
h
ec
k
I
n
p ut Gate Current
Page 5-13
At 5 m
V
, .05 d ivision or less trace s
h
ift accom p anying
attac
h
ing or removing t
h
e 50 Ω Termination/A d a
p
ter .
9 . C
h
ec
k
Drift W it
h
Time P
age 5-13
W armu p time at least 20 minutes . Drift wit
h
in 0 .1
division d uring any 1 minute ; wit
h
i
n
0 .3 d ivisions
d uring any 1
h
our .
10 . C
h
ec
k
ID
EN
TI
F
Y
O
p eration
P age 5-13
Trace s
h ift accom p anying P robe or front- p anel
ID
EN
TI
F
Y button operation e q uals ap p roximately 1/4
division .
11 . C
h
ec
k
AC-Co u
p
le d L ow-
F
requency
R
esp onse P age 5-13
3
dB
or less attenuation at 15 Hz wit
h AC Cou p ler in
place .
12 . C
h
ec
k
/A d
j
ust Transient
R
es p onse P
age 5-14
Ad
j
ust C134,
R
255, C255, C203, C245, C261, C234 at
10 m
V
for transient res
p
onse wit
h
in ±2%, using 5
d ivision d isp lay of
F
ast
R
ise sq uare w ave from Ty p e
106 S q uare Wave Generator, viewed
th
roug
h E
xten d er
on Sam p ling System . C
h
ec
k
for .18 d ivision or less
d eviation of 6 division sq uare wave d isp laye d on
7000-Series Oscilloscope C
R
T at 5, 10, 20 an d 50
m
V
/DI
V und er setu
p
s listed in Table 5-9 .
13 . C
h
ec
k
/Ad
j
ust
P
robe I
n
p ut Com
p
ensation Page 5-19
At 5 μ s/d ivision wit
h
6 division, 250
kH
z H i Am p litude
sq uare wave a pp lied from Type 106, ad
j
ust C13 at .2
V /d ivision and C6 at 2
V
/d ivision . Aberrations wit
h
in
±0 .2 divisions .
14 . C
h
ec
k N
oise
P
age 5-20
Tangentially measured noise s
h
oul d be wit
h
in 0 .1
division at 5 m
V
/division .
15 . C
h
ec
k F
ast Transie
n
t
R
es p onse an d
R isetime P age 5-21
8 d ivision sq uare wave ap
p
lied to 7 Α 11 from Ty p
e
106 ; d isplaye d on Sam p ling System (t h
roug
h
Ex-
tender) ; abe
r
rations i n first 80 ns s h
oul
d
be wit
h
in ±3 ο % ο
(6ο % ο pea
k
to p ea
k
) of refere
n
ce am p litude at 5, 10, 20
an d 50 m
V
/d ivision and wit
h
in ±4 ο / ο (8 ο/ ο pea k
to p ea
k
)
at .1 V
/d ivision .
R
isetime com
p
uted from
F ig . 5-18
s
h
ould be 1 .4 ns or less .