Vertical Deflection System - Tektronix 214 Manual

Equipment Required
Calibration Generator (Item 1 )
Leveled Sine-Wave Generator (Item 2)
BNC-Male-to-Probe Tip Adapter (Item 7)
10X Attenuator (Item 9)
Display
See
ADJUSTMENT LOCATIONS 1
INTENSITY
STORE
Trigger
Vertical (Both Channels)
VOLTS/DIV
INPUT COUPLING
POSITION
VOLTS/DIV Variable
VERT MODE
INITIAL CONTROL SETTINGS
LEVEL/ SLOPE
TRIG SOURCE
Horizontal
VERTICAL DEFLECTION SYSTEM
HORIZ MAG
POS
SEC/DIV
SINGLE SWP
As desired
Off ( button out)
50 mV
GND
Midrange
CAL detent
CH 1
AUTO PRESET (CCW)
COMP
CAL detent
Midrange
0.2 ms
Off ( button out)
at the back of this manual for location of test points and adjustments.
PROCEDURE STEPS
1. Check/Adjust Vertical DC Centering (R101 )
a. Connect the digital voltmeter positive (volts) lead to pin
11 of U105 on the Amplifier circuit board and negative (low )
lead to chassis ground .
Calibration
214 Service ( SN B300000 & ABOVE )
b . Adjust the CH 1 POSITION control for a
V reading
on the digital voltmeter .
c. CHECK - Display trace is within 0.4 division of the
center horizontal graticule line . If the Vertical DC Centering
is within tolerance , skip to part e . If it is not, continue with
part d of this step .
50-2 Termination (Item 10)
Digital Voltmeter (Item 12)
Screwdriver (Item 14)
Low- Capacitance Aligment Tool (Item 15)
d . ADJUST - Vertical DC Centering control (R101 ) to set
the trace on the center horizontal graticule line.
e. Disconnect the test equipment from the instrument.
2. Check /Adjust CH 1 STEP ATTEN BAL
a. Rotate the CH 1 VOLTS/ DIV switch from 50 mV to
1 mV .
b. CHECK - The display trace for 0.1 division , or less, of
vertical trace shift between adjacent switch positions from
50 mV to 1 mV . If the CH 1 STEP ATTEN BAL is within
tolerance, skip to step 3. If it is not , continue with part c of
this step .
c. ADJUST
CH 1 STEP ATTEN BAL control (R417)
located on the side panel for minimum trace shift when
rotating the CH 1 VOLTS/ DIV switch from 50 mV to 1 mV .
3. Check /Adjust CH 2 STEP ATTEN BAL
a. Set the VERT MODE switch to CH 2.
b. Rotate the CH 2 VOLTS/DIV switch from 50 mV to
1 mV .
c. CHECK - The display trace for 0.1 division , or less , of
vertical trace shift between adjacent switch positions from
50 mV to 1 mV . If the CH 2 STEP ATTEN BAL is within
tolerance, skip to step 4. If it is not , continue with part d of
this step.
d . ADJUST- CH 2 STEP ATTEN BAL control ( R315)
located on the side panel for minimum trace shift when
rotating the CH 2 VOLTS/ DIV switch from 50 mV to 1 mV.
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