Calibration—7623/R7623 Service
BI
STABLE
STORAGE
MODE
Equipment
Required
1.
7B53A Horizontal time-base plug-in unit
2.
7A15A
Vertical amplifier plug-in unit
3.
Low-Frequency signal generator
4. 50-ohm
BNC cable
5. Test-oscilloscope with 10X probe
6.
Three-inch
screwdriver
Control
Settings
Set
the
controls as given in the Preliminary Control
Settings.
42.
Check
—
Storage
Test
points
(see
Fig.
2-10)
a.
CHECK—Table
2-3 lists the storage
test points and
their voltage tolerances.
Connect the test
oscilloscope 10X
probe
to each
storage test point, in turn,
setting the test
oscilloscope vertical deflection
to 1.0 V, 2.0 V, and 5.0 V
as
required.
TABLE
2-3
Test
Point
Tolerance
Bi-Stable
-12.8 V
to
-15 V
High
Speed Mesh
+120 V to +130 V
Collector
+144
V
to+156 V
ce
2
+60 V
to +80 V
ce
3
+30 V
to +50 V
CE,
+67.2 V to +72.8 V
FGA
+34.5
V
to +37.5 V
FGK
Approximately
50 V
b.
Install
the
vertical amplifier unit in
the left vertical
compartment.
e.
Press the
BI-STABLE button.
c.
Install
the
Horizontal time-base unit in the horizontal
compartment.
d.
Press
the NON-STORE button.
Fig. 2-10.
Storage adjustments and storage test points (Cal-Storage
board).
f.
CHECK
—
Storage
test points (see Fig. 2-10). Table 2-4
lists the Storage
test points and their voltage tolerances
in
the Bi-Stable
mode. Connect the test oscilloscope 10X
probe
to
each storage test point, in turn setting the test
oscilloscope vertical
deflection to 1.0 V, 2.0 V, and 5.0 V
as required.
TABLE
2-4
Test
Point
Tolerance
High
Speed
Mesh
+120 V to +130 V
Collector
+144
V to +156 V
ce
3
+81.6 V to +88.4
V
ce
2
+81.6
V
to
+88.4
V
CE,
+43.2 V to
+46.8
V
FGA
+34.5 V to
+37.4 V
FGK
Less than 500 mV
g.
ADJUST—Bi-Stable Op level
(R1325} for 70 volts.
2-27
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 ...