Performance Check Procedure—2246 1Y and 2246 Mod A Service
DISPLAY
Equipment Required (See Table 4-1)
Tim e-m ark generator
50
f l
BNC coaxial cable
50 f l BNC termination
1. TRACE ROTATION
a. Set:
c. CHECK—trace rotation control range is adequate
to align trace with center graticule line using a
small straight-bladed alignment tool.
READOUT (Intensity)
For a viewable
readout
A INTEN
For a viewable
trace
Vertical MODE
CH 1
CH 1 VOLTS/DIV
0.1 V
CH 1 COUPLING
AC
A/B SELECT
A Trigger
Trigger MODE
AUTO LEVEL
Trigger SOURCE
VERT
Trigger CPLG
DC
Trigger SLOPE
-j~
(positive)
Trigger HOLDOFF
Min
Trigger LEVEL
12 o ’clock
Horizontal MODE
A
Horizontal POSITION
12 o ’ clock
A SEC/DIV
2 |xs
Measurements
All off (Dress
d. ADJUST—trace parallel to center horizontal
graticule line.
2. Geometry
a. Connect tim e-m ark generator (TG 501) to CH 1
via a 50
BNC coaxial cable and a 50 f l BNC
termination.
b. Set generator for 0.2 p.s tim e marks.
c. Position the bottom of the CH 1 signal below the
bottom graticule line.
d. CHECK—deviation of any vertical line within the
center eight horizontal divisions does not exceed
0.1 division (half a minor division).
e. Set CH 1 COUPLING to GND.
CLEAR
DISPLAY three
times)
FOCUS
For best
defined display
SCOPE BW
Off
b. Position trace vertically to the center graticule
line.
f.
Position trace slowly from the bottom graticule
line to the top graticule line while making the fol
lowing check.
g. CHECK—bowing or tilt of baseline trace doesn't
exceed 0.1 division (half a minor division) within
the eight vertical divisions.
h. Disconnect test signal from the 2246 1Y or 2246
Mod A.
4-5
Summary of Contents for 2246 1Y
Page 13: ...2246A Service 7062 01 X The 2246 1Y or 2246 Mod A Portable Oscilloscope ...
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Page 278: ...Figure 9 5b Detailed 2246 1Y or 2246 Mod A block diagram part 2 R E ...
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Page 304: ...A D D J U N 1991 ...
Page 311: ...2246 1Y and 2246 Mod A Service WAVEFORMS FOR DIAGRAM 1 0 V r l III B f e I l i 6555 39 ...
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Page 321: ...2246 1Y and 2246 Mod A Service WAVEFORMS FOR DIAGRAM 2 SET READOUT CONTROL CCW OFF 6555 40 ...
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Page 326: ...A B C P E F G ...
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Page 347: ...BEV JUNE 1991 7062 18 ...
Page 349: ...2246 1Y and 2246 Mod A Service WAVEFORMS FOR DIAGRAM 6 6555 43 I ...
Page 355: ...I BOARD LOCATION 8K 8J 8H 7H 8H 8H 7J 8D 7H 8H 8J 8J 7K 8K 10D 6L 6K 6L 6K 6G 5H I ...
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Page 395: ...WAVEFORMS FOR DIAGRAM 12 cont 2246 1Y and 2246 Mod A Service ...
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Page 400: ...REV JUNE 1991 7062 39 ...
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Page 406: ...B 2246 IV AND 2246 MOD A ...
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