Adjust Attenuator Compensation; Ertical Output Am Plifier Compensation - Tektronix 2213 Service Instructions Manual

A
d
justment Proced ure-2213 Se rvice
e. Disconnect the test setu
p
.
10 . A
d
just Atte nuator Compensation (C105,
C104, C111, C110, C205, C204, C211, and C210)
α. Set:
C H 1
V
O L TS/DIV 20 mV
AC-G ND-DC (bot h) DC
SEC/DI V 0 .2 ms
b .
Co nn ect α 1-kH z,
h
ig h-amplitude squ are wave via α
50- Ω termination, α probe-ti p-to-bn c adapter, and a P6120
P
ro b e to t he C H 1 O R Χ inpu t connecto r.
ε. Set the ge nerator output to produ ce α 5-division
display an d compensate the
p
ro be
u
sing the pr obe com-
pensation a
d
justment (see the probe instruction manual).
5- 1 0
d .
Set t h e CH 1
V
O LTS/DIV switc h to 0.2
V.
e. Replace the probe and
p
robe-tip-to-bn c adapte r with
α 50-Ω ca ble .
f. Adj ust the gene rator output for α 5-division
d
is play.
ΝΟΤΕ
U
se Table 5-4 to identify th e correct cap acito r for
each channel adjustment.
g. ADJU ST-T he =10 LF Comp ca pacitor fo r best front
corner .
Ta ble 5-4
Atte nu ator Co mp ensation Adjustments
h. R e
p
lace th e cable an d 50- Ω termination with
t
he
Ρ 6120
P
robe an d p robe-tip-to- bn c a dapte r.
i. A
d
ju st the generator output for α 5-division display .
j. ADJU ST-T he =10 Input C capacitor for
b
est flat to p.
k. Repeat parts e throu gh j until no further im prove-
ment is note
d
. Add the 50-Ω termination to the ca ble in
p
art e.
1 . Set the CH 1
V
O LTS/DIV switch to 2
V .
m.
R
e
p
lace the probe a nd probe-tip-to-bnc a
d
apter
with
t
he 50- Ω cable .
η. Adju st the gene rator output for α 5- division display.
ο. AD JU ST-The =100 LF Comp ca pacitor fo r best
front co rner.
ρ.
R
eplace the 50-Ω cable with
t
he probe a nd p robe-
tip-to-bnc adapter.
q. Adj ust t he generator ou tpu t to
p
ro
d
uce α
d
isplay as
close as p ossible to 5
d
ivisions .
r.
ADJU ST-T he =100 In pu t C capacitor for
b
est flat
top.
s. Re
p
eat parts m through r
u
ntil no furt her improve-
me nt is
n
oted.
t. Set the VERTICA L MOD E switch to CH 2.
υ.
R
epeat parts b
t
hroug h s for Channel 2.
ν. Discon nect the test setup .
11 . A
d
just
V
ertical O ut
p
ut Amplifier Compen-
sation (13357, C357,
R
367,
R
366, and C366)
α. Set :
V OLTS/DI V (bot h ) 20 m V
S E C/D Ι V
0.05 μs
b .
Co nn ect α 1- MH z,
p
ositive-going fast-rise sq uare-wave
via α 50-Ω ca ble, α 10 Χ attenuator, and α 50-Ω termination
to the CH 2 O R Υ in pu t connector.
A
dj ustment Chan nell Channel 2
=10 LF Comp C105 C205
=10 In
p
ut C C104 C204
=100 LF Comp C111 C211
=100 In
p
ut C
C110
C210