Horizontal Deflection System - Tektronix 214 Manual

Equipment Required
Calibration Generator ( Item 1 )
Time-Mark Generator (Item 3)
BNC-Male-to- Probe Tip Adapter (Item 7)
Display
See
ADJUSTMENT LOCATIONS 1
INTENSITY
STORE
Trigger
INITIAL CONTROL SETTINGS
Vertical ( Both Channels )
VOLTS/DIV
INPUT COUPLING
POSITION
VOLTS/DIV Variable
VERT MODE
LEVEL/SLOPE
TRIG SOURCE
HORIZONTAL DEFLECTION SYSTEM
Horizontal
HORIZ MAG
POS
SEC/DIV
SINGLE SWP
As desired
Off ( button out)
5 mV
GND
Midrange
CAL detent
BOTH
AUTO PRESET
COMP
CAL detent
Midrange
X-Y
Off ( button out)
Calibration
214 Service (SN B300000 & ABOVE)
at the back of this manual for location of test points and adjustments.
PROCEDURE STEPS
1. Check/Adjust Horizontal Centering ( R366)
a. Connect the digital voltmeter negative (low ) lead to
chassis ground and connect the positive (volts) lead to pin 5
of U105 on the Amplifier circuit board.
Digital Voltmeter (Item 12)
Screwdriver (Item 14)
b . CHECK- Voltmeter reading is between -0.2 V and
+0.2 V. If the reading is within these limits skip to step 2. If
it does not, continue with part c of this step .
c . ADJUST- Horizontal Centering ( R366) for
V reading
(-0.2 V to +0.2 V).
2. Check/Adjust Horizontal Gain ( R175 )
a . Connect the Channel 1 Probe tip to the output of the
standard amplitude generator via a BNC -male-to- probe tip
adapter.
b . Set the generator to produce a 20 mV signal .
c . Set the CH 1 INPUT COUPLING switch to DC .
d . CHECK- Display for 4-divisions of horizontal
deflection (3.8 divisions to 4.2 divisions ) . If the reading is
within these limits skip to step 3. If it does not, continue with
part e of this step .
e. ADJUST- Horizontal Gain (R175) for 4- divisions of
horizontal (3.8 divisions to 4.2 divisions) deflection between
dots .
f. Disconnect the test equipment from the instrument.
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