Tektronix 2213 Instruction Manual page 77

Adjustment Procedure—2213 Service
e. Disconnect the test setup.
10. A d ju st A tte n u a to r Com pensation (C 1 0 5 ,
C 1 0 4 , C l 11, C l 1 0, C 2 0 5 , C 2 0 4 , C 2 1 1, and C 2 1 0 )
a. Set:
CH 1 VO LTS/DIV
AC-GND-DC (both)
SEC/DIV
b. Connect a 1-kHz, high-amplitude square wave via a
50-J2 termination, a probe-tip-to-bnc adapter, and a P6120
Probe to the CH 1 OR X input connector.
c. Set the generator output to produce a 5-division
display and compensate the probe using the probe com­
pensation adjustment (see the probe instruction manual).
d. Set the CH 1 VO LTS/D IV switch to 0.2 V.
e. Replace the probe and probe-tip-to-bnc adapter with
a 50-f2 cable.
f. Adjust the generator output fo r a 5-division display.
NOTE
Use Table 5-4 to id e n tify the correct capacitor fo r
each channel adjustment.
g. ADJUST— T he-M 0 LF Comp capacitor fo r best fron t
corner.
Table 5-4
Attenuator Compensation Adjustments
Adjustment Channel 1
M 0 LF Comp
-M0 Input C
-M00 LF Comp
-M00 Input C
h. Replace the cable and 50-J2 termination w ith the
P6120 Probe and probe-tip-to-bnc adapter.
i. Adjust the generator o utput fo r a 5-division display.
5-10
20 mV
DC
0.2 ms
Channel 2
C205
C l 05
C204
C104
cm
C211
Clio
C210
j. ADJUST—The-M0 Input C capacitor fo r best fla t top.
k. Repeat parts e through j until no further improve­
ment is noted. Add the 50-J2 termination to the cable in
part e.
I. Set the CH 1 VO LTS/DIV switch to 2 V.
m. Replace the probe and probe-tip-to-bnc adapter
w ith the 50-12 cable.
n. Adjust the generator output fo r a 5-division display.
o. ADJUST— The -M00 LF Comp capacitor fo r best
fro n t corner.
p. Replace the 50-J2 cable w ith the probe and probe-
tip-to-bnc adapter.
q. Adjust the generator output to produce a display as
close as possible to 5 divisions.
r. ADJUST— The -M00 Input C capacitor fo r best fla t
top.
s. Repeat parts m through r until no further improve­
ment is noted.
t. Set the VER TICAL MODE switch to CH 2.
u. Repeat parts b through s fo r Channel 2.
v. Disconnect the test setup.
11. A d ju st V e rtica l O u tp u t A m p lifie r C om pen­
sation (R 3 5 7 , C 3 5 7 , R 3 6 7 , R 3 6 6 , and C 3 6 6 )
a. Set:
VO LTS/D IV (both)
SEC/DIV
b. Connect a 1-MHz, positive-going fast-rise square-wave
via a 50-S2 cable, a 10X attenuator, and a 50-S2 termination
to the CH 2 OR Y input connector.
20 mV
0 .0 5 /is