Calibration
—7623/R7623
Service
h. Set
the time-mark generator for both one- and
0.1
-millisecond
markers.
i. Position the
baseline
of the markers as far toward the
bottom
of the graticule as possible
with the calibration
fixture
Position control.
j.
CHECK—Vertical bowing and tilt of the
marker
display for
less than
0.1 division (each 0.1-millisecond
marker represents 0.1 division).
k.
ADJUST-Geometry
adjustment R1184 (see Fig. 2-2)
for
minimum bowing for time markers.
Adjustment may
have
to
be compromised to obtain less than
0.1 division
bowing and
tilt everywhere within the graticule area.
9.
Check
External
Z-Axis
Operation
a.
Install
the
7A15A
in the right vertical compartment.
b.
Connect the
output of the
medium-frequency
constant-amplitude signal generator
to
the
input of the
7A15A
through
the five-nanosecond GR cable, 50-ohm GR
in-line
termination,
and
the BNC T connector.
c.
Set
the 7A15A
for
a deflection factor of one
volt/division.
d.
Set
the 7B53A
for auto, internal
triggering at a
calibrated
sweep rate of 10 microseconds/division.
e.
Set the
medium-frequency generator for a two-
division
display at its
reference frequency (50 kilohertz).
f.
Connect
the
output of the BNC T connector to the
EXT
Z-AXIS connector
with the
42-inch 50-ohm BNC
cable.
g.
CHECK—Top portion
blanked
out.
of
displayed
waveform
h.
Disconnect cable from
external Z-AXIS CON
NECTOR.
10.
Check
Beam
Finder
a.
Set
the 7A15A deflection factor to 20 millivolts/
division. Notice that the
display exceeds the viewing
area.
b.
Press
the BEAM
FINDER switch.
c. CHECK-Display compressed within graticule area.
d.
Increase the
7A15A
deflection factor-
until the
compressed
display
is reduced in amplitude.
e. Release the BEAM
FINDER switch.
f.
CHECK-Display remains within graticule area.
g.
Disconnect all
test
equipment and remove the plug-in
units.
2-11
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 ...