Calibration—7623/R7623
Service
READOUT
OPERATION
Equipment
Required
1.
7A18
dual display vertical plug-in unit
37.
Check
READOUT
Operation
a.
Install the
7A18 in the left vertical compartment.
Set
the 7A18 to a dual
trace mode.
Push and hold the
identify
buttons on
the 7A18. (Switch S2110 should be in
the free position.)
Check
that the
word identify is within
the
top division and the bottom division of the graticule.
Check
that the words identify are positioned within the left
third
of
the graticule.
Check
completeness of characters
without
over-scanning (over-scanning
causes a bright dot
where
the traces
overlap).
i. Remove the
dual trace plug in unit.
READOUT GATE TRIG'D
OPERATION
38.
Check
Readout
Gate
Trig'd
Operation
a. Set
switch S2110
to Gate Trig'd position (see
Fig.
2-9).
b.
ADJUST—
Vertical Separation
R2291 so
the channel
1
characters are within the
top division, and the channel 2
characters are within the bottom division.
c. ADJUST-Character height size R2273 as needed.
d. ADJUST-Character scan R2128
if
characters are
over
scanned.
e.
Remove the 7A18 from the left vertical and install
it in
the right vertical
compartment. Push and
hold the
identify
buttons
on the 7A18. Check that
the words
identify
are positioned
within the center third of the
graticule.
f.
Remove
the 7A18 from the
right vertical and install
it
in the horizontal compartment.
Push and
hold the identify
buttons
on the 7A18. Check that the words identify are
positioned
within the
right third of the graticule.
g.
If
the
correct characters
are displayed there is no
need
to adjust the Row
Match adjustment R2183 or the
Column
Match adjustment R2214.
h. ADJUST
—Row Match adjustment R2183 and
Column Match adjustment
R2214
for correct
readout
display.
b.
Install the time-base
unit
in the horizontal plug-in
compartment. Set sweep rate
to 1
second/division.
c.
CHECK—That during the sweep that there is no
readout
information
displayed, until after the sweep has
been
displayed. At fast sweep rates, this is not noticeable.
Fig.
2-9. Location of Readout
adjustments and switch S2110
(Readout board).
2-24
Summary of Contents for 7623
Page 1: ...MANUAL 7623 R7623 STORAGE OSCILLOSCOPE SERVICE MANUFACTURERS OF CATHODE RAY OSCILLOSCOPES ...
Page 51: ...Fig 3 2 Block diagram of Logic circuit Circuit Description 7623 R 7623 Service ...
Page 72: ...W NJ 00 Fifl 3 22 Low Voltage Power Supply detailed block diagram ...
Page 73: ...Circuit Description 7623 R 7623 Service ...
Page 74: ...CO NJ CD Fig 3 22 Low Voltage Power Supply detailed block diagram cont ...
Page 75: ...Circuit Description 7623 R 7623 Service ...
Page 97: ...Circuit Description 7623 R7623 Service 3 51 ...
Page 98: ...Circuit Description 7623 R7623 Service Fig 3 39 Output Pulses for the Storage Circuits 3 52 ...
Page 103: ...Circuit Description 7623 R7623 Service 3 57 ...
Page 108: ... Ç À Fig 4 2 Location of circuit boards in the 7623 ...
Page 109: ...Fig 4 3 Location of circuit boards in the R7623 Maintenance 7623 R 7623 Service ...
Page 113: ...Maintenance 7623 R7623 Service Fig 4 6 Circuit Isolation Troubleshooting Chart 4 9 ...
Page 165: ...7623 BLOCK DIAGRAM ...
Page 166: ...7623 R7623 Service Front of Board ...
Page 167: ......
Page 168: ...FL ...
Page 169: ......
Page 173: ...7623 Logic ...
Page 175: ...Vertical Interface A4 ...
Page 178: ...Vertical Interface ...
Page 180: ...Vertical Amp A5 ...
Page 184: ...Horizontal Amp A6 ...
Page 186: ...7623 TO P450 VERT AMP 3 HORIZONTAL AMPLIFIER ...
Page 188: ...Output Signals A7 ...
Page 190: ...FROM 7G23 Output Signals g ...
Page 195: ...FROM LV POWER SUPPLY 7623 CRT CIRCUIT ...
Page 197: ......
Page 200: ......
Page 202: ...Storage Output A14 ...
Page 204: ......
Page 205: ...7623 R7623 Service Fig 6 14 A15 Cal Storage circuit board ...
Page 208: ......
Page 209: ...7623 R7623 Service Fig 6 15 A16 Readout System circuit board ...
Page 213: ......
Page 242: ...7623 R7623 OSCILLOSCOPE b ...
Page 243: ...151 ...
Page 246: ...20 ...
Page 247: ...7623 R7623 OSCILLOSCOPE 112 ...