Calibration
—
7623/R7623
Service
VERTICAL
DEFLECTION
SYSTEM
Equipment
Required
6.
Five-nanosecond G R cable
1.
Mainframe standardizer calibration fixture
7.
50-ohm GR in-line
termination
2.
7B53A plug-in unit
8.
BNC to pin-jack cable
3.
High-frequency generator
9.
Dual-input coupler
4.
7A15A plug-in unit (two)
10.
Three-inch screwdriver
5.
10X probe
11.
Low-capacitance screwdriver
Control
Settings
12.
Adjust
Vertical
Centering
Set
the
controls as given in the
Preliminary Control
Settings.
a.
Set
the
calibration fixture
Test switch to
TRIG
GERING
GAIN.
11.
Adjust
Bias
Adjustment
a. Install the 7B53A
in the horizontal compartment.
b.
Set
the 7B53A
for auto, external triggering
at a
sweep rate of one millisecond/division.
b.
The
trace should be within 0.3 division
of the
graticule center line.
c.
ADJUST-Vertical
Centering
adjustment R403 (see
Fig. 2-3) to
position the
trace to the center horizontal line.
c.
Install
the mainframe standardizer calibration fixture
in
the left vertical compartment. Set the calibration fixture
Test
switch to VERT
or HORIZ Gain
and the Rep Rate
switch
to 250 kHz.
d.
ADJUST—
Bias R486 for maximum
gain. (See
Fig.
2-3.)
13.
Adjust Vertical
Gain
a.
Set
the calibration fixture Test switch to VERT or
HORIZ
GAIN.
b. Position the
display so that the
first and seventh
traces are near
the top and bottom
lines
of the graticule.
c. CHECK—Deflection between
the second and sixth
traces should
be six divisions
±0.06 division.
d. ADJUST-Vertical
Gain adjustment R447 (see
Fig.
2-3)
for exactly
six divisions of deflection between the
second and sixth traces.
e.
Remove the calibration fixture
from the left vertical
compartment
and install it
in the right vertical compart
ment.
f.
Set
the VERT MODE switch to RIGHT.
{
Fig. 2-3.
Location of Vertical System adjustments (Vertical Output
board).
g. CHECK—Deflection between
the second and
sixth
traces should
be the same as part c or d ±1%.
2-12
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 ...