Adjust Horizontal Magnifier Compensation (R671, R610); Adjust Timing; Adjust Magnifier Gain (R647, R627) - Tektronix 2212 Service Manual

Adjusbnent Procedures
5-18
Adjust Horizontal Magnifier Compensation (R671, R610)
Procedure
a. Set: to Initial Control Settings
b. Connect
1
ms time markers from the time-mark generator via a
50
n
BNC coaxial cable and a 50
Q
BNC termination to CH
1
OR X
input connector.
c. Position with the Horizontal POSITION Control the first time
marker of the unmagnified sweep at the first time marker of the
magnified sweep.
d. Adjust: X10 Mag Registration (R671) to bring both first markers
to center vertical graticule line.
e. Set the Horizontal MAG to X50.
f. Adjust: X50 Mag Registration (R610) to bring the first time
marker of the magnified sweep to the center vertical graticule line.
g. Disconnect the test equipment from the instrument.
Adjust Timing
Procedure
Calibration via the Calibration Routine
in
the
2212
a. Place: CAL jumper in CAL position, and wait for the Calibration
MENU on the CRT screen
b. Select: HORIZONTAL to GO.
c. Adjust: Timing by following the instructions at the screen.
d. Remove: CAL jumper to enter normal scope operation.
Adjust Magnifier Gain (R647, R627)
Procedure
a. Set:
SEC/DIV............................... 1 ms
MAG ................................... Xl0.
b. Connect 0.1 ms time markers from the time-mark generator via a
50
Q
BNC coaxial cable and a 50
n
BNC termination to CH
1
OR X
input connector.
Adjustment