Tektronix 2213, Инструкция по эксплуатации

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Performance Check Procedure—2213 Service
d. CHECK—Deflection accuracy is w ith in the lim its
given in Table 4-2 fo r each CH 2 VO LTS/D IV switch set­
ting and corresponding standard-amplitude signal. Perform
the checks from the bottom to the top o f Table 4-2 to
avoid unnecessary switch-position changes. When at the
20-mV VO LTS/D IV switch setting, rotate the CH 2
VO LTS/D IV Variable control fu lly counterclockwise and
CHECK that the display decreases to 2 divisions or less.
Then return the VO LTS/DIV Variable control to the
CAL detent and finish the check.
e. Disconnect the test setup.
2. Check Bandwidth
a. Set:
VO LTS/D IV (both) 2 mV
SEC/DIV 20 jus
b. Connect the leveled sine-wave generator output via
a 50-J2 cable and a 50-S2 term ination to the CH 1 OR X
input connector.
c. Set the generator output amplitude fo r a 5-division,
50-kHz display.
d. Change the generator output frequency to the value
shown in Table 4-3 fo r the corresponding VO LTS/DIV
switch setting.
Table 4-3
Settings fo r Bandwidth Checks
VO LTS /D IV Generator
Switch Settings O utput Frequency
2 m V to 10 mV 50 MHz
20 m V to 10 V
60 MHz
e. CHECK—Display amplitude is 3.5 divisions or greater.
f. Repeat parts c through e fo r all indicated CH 1
VO LTS/D IV switch settings, up to the output-voltage
upper lim it o f the sine-wave generator being used.
g. Move the generator o utput signal from the CH 1 OR
X input connector to the CH 2 OR Y input connector. Set
the VER TICAL MODE switch to CH 2.
h. Repeat parts c through e fo r all indicated CH 2
V O LTS/D IV switch settings, up to the output-voltage
upper lim it o f the sine-wave generator being used.
3. Check Common-Mode Rejection Ratio
a. Set both VO LTS/D IV switches to 20 mV.
b. Connect a 10-MHz, leveled sine-wave signal via a
50-J2 cable, a 50-S2 term ination, and a dual-input coupler to
the CH 1 OR X and the CH 2 OR Y input connectors.
c. Set the generator output amplitude to produce a
6-division display.
d. Vertically center the display using the Channel 2
POSITION control. Then set V E R TIC A L MODE to CH 1
and vertically center the display using the Channel 1
POSITION control.
e. Set the VE R TIC A L MODE switches to BOTH and
AD D ; then push in the INVERT button.
f. CHECK—Display amplitude is 0.6 division o r less.
g. If the check in part f meets the requirement, skip to
part n. If it does not, continue w ith part h.
h. Set V E R TIC A L MODE to CH 1.
i. Change the generator frequency to 50 kHz and adjust
the output to obtain a 6-division display.
j. Set V E R TIC A L MODE to BOTH.
k. Adjust the CH 2 V O LTS/D IV Variable contol fo r
minimum display amplitude (best CMRR).
I. Change the generator frequency to 10 MHz.
m. CHECK—Display amplitude is 0.6 division or less.
n. Disconnect the test setup.
@ 4-5