Tektronix 2213 Instruction Manual

Then return the VOLTS/DIV Variable control to the CAL
detent and finish the check.
5. Check Input Coupling
a. Set both VOLTS/DIV switches to 50-mV.
b. Set the calibration generator to produce a 200-mV
standard-amplitude signal.
c. Position the bottom of the signal on the center hori
zontal graticule line using the Channel 2 POSITION control.
d. Set the Channel 2 input coupling switch to AC.
e. CHECK—Display is centered about the center hori
zontal graticule line.
f. Set the VERTICAL MODE switch to CH 1 and move
the input signal from the CH 2 OR Y input connector to
the CH 1 OR X input connector.
g. Repeat parts c through e for Channel 1.
6. Check A LT and CHOP Operation
a. Set:
VERTICAL MODE BOTH-ALT
AC-GND-DC (both) GND
SEC/DIV 10 ms
b. CHECK-Display alternates between the Channel 1
and Channel 2 displays. If necessary, use both POSITION
controls to separate the two traces.
c. Set VERTICAL MODE to CHOP.
d. CHECK—Channel 1 and Channel 2 displays are both
displayed simultaneously.
7. Check V O L T S /D IV Variable Control Trace
Shift
a. Set:
VERTICAL MODE C H I
VOLTS/DIV (both) 2 mV
AC-GND-DC (both) DC
SEC/DIV 0.2 ms
Adjustment Procedure—2213 Service
b. Center the trace on the center horizontal graticule
line using the Channel 1 POSITION control.
c. Rotate the CH 1 VOLTS/DIV Variable control
counterclockwise through its full range.
d. CHECK—That the trace does not shift more than 2.5
divisions.
e. Return the CH 1 VOLTS/DIV Variable control to
its CAL detent.
f. Set the VERTICAL MODE switch to CH 2.
g. Repeat parts b through e for Channel 2.
8. Adjust Invert Balance (R 264)
a. Set the CH 2 VOLTS/DIV switch to 20 mV.
b. Center the trace on the center horizontal graticule
line using the Channel 2 POSITION control.
c. Push in the INVERT button.
d. ADJUST—Invert Bal (R264) to position the trace
on the center horizontal graticule line.
e. Return the INVERT button to Normal (button out).
f. Repeat parts c through e until there is no trace shift
when switching the INVERT button between Invert and
Normal.
9. Adjust Trigger Balance (R154)
a. Set the I NT switch to CH 2.
b. Connect the digital voltmeter low lead to chassis
ground (TP501) and the volts lead to pin 16 of U421; note
the voltage reading for use in part d.
c. Set the I NT switch to CH 1.
d. ADJUST—Ch 1/Ch 2 Balance (R154) so that the
voltage reading is the same as that obtained in part b.
REV NOV 1981
5-9

Tektronix 2213 Specifications

General

Brand	Tektronix
Model	2213
Category	Test Equipment
Language	English