Performance Check Procedure—2213 Service
d. CHECK—Deflection accuracy is within the limits
given in Table 4-2 for each CH 2 VOLTS/DIV switch set
ting and corresponding standard-amplitude signal. Perform
the checks from the bottom to the top of Table 4-2 to
avoid unnecessary switch-position changes. When at the
20-mV VOLTS/DIV switch setting, rotate the CH 2
VOLTS/DIV Variable control fully counterclockwise and
CHECK that the display decreases to 2 divisions or less.
Then return the VOLTS/DIV Variable control to the
CAL detent and finish the check.
e. Disconnect the test setup.
2. Check Bandwidth
a. Set:
VOLTS/DIV (both) 2 mV
SEC/DIV 20 jus
b. Connect the leveled sine-wave generator output via
a 50-J2 cable and a 50-S2 termination to the CH 1 OR X
input connector.
c. Set the generator output amplitude for a 5-division,
50-kHz display.
d. Change the generator output frequency to the value
shown in Table 4-3 for the corresponding VOLTS/DIV
switch setting.
Table 4-3
Settings for Bandwidth Checks
VOLTS/DIV Generator
Switch Settings
Output Frequency
2 mV to 10 mV
50 MHz
20 mV to 10 V
60 MHz
e. CHECK—Display amplitude is 3.5 divisions or greater.
f. Repeat parts c through e for all indicated CH 1
VOLTS/DIV switch settings, up to the output-voltage
upper limit of the sine-wave generator being used.
g. Move the generator output signal from the CH 1 OR
X input connector to the CH 2 OR Y input connector. Set
the VERTICAL MODE switch to CH 2.
h. Repeat parts c through e for all indicated CH 2
VOLTS/DIV switch settings, up to the output-voltage
upper lim it of the sine-wave generator being used.
3. Check Common-Mode Rejection Ratio
a. Set both VOLTS/DIV switches to 20 mV.
b. Connect a 10-MHz, leveled sine-wave signal via a
50-J2 cable, a 50-S2 termination, 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 VERTICAL MODE to CH 1
and vertically center the display using the Channel 1
POSITION control.
e. Set the VERTICAL MODE switches to BOTH and
ADD; then push in the INVERT button.
f. CHECK—Display amplitude is 0.6 division or less.
g. If the check in part f meets the requirement, skip to
part n. If it does not, continue with part h.
h. Set VERTICAL MODE to CH 1.
i. Change the generator frequency to 50 kHz and adjust
the output to obtain a 6-division display.
j. Set VERTICAL MODE to BOTH.
k. Adjust the CH 2 VOLTS/DIV Variable contol for
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
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