C a lib ra tio n — Type 503
f. Check— Horizontal jitter, 2 mm or less.
g. Remove the time-mark generator signals.
51. Check Z Axis Operation
a. Change the HORIZONTAL DISPLAY switch to SWEEP
NORMAL ( X I) , the SWEEP TIME/CM to 1 mSEC, and the
LEVEL control clockwise to the FREE RUN position.
b. Connect a 50-ohm cable from the Standard Amplitude
Calibrator output connector to the CRT GRID binding post
of the EXTERNAL INPUT connectors (on the rear panel of
the Type 503).
c. Set the Standard Amplitude Calibrator to supply a
10-volt square wave.
d. Remove the strap connecting the CRT GRID and GND
binding posts.
e. Check— Intensity modulation of the trace should be
visible.
f. Replace the strap connecting the CRT GRID and GND
binding posts, and remove the signal from the binding post.
52 Adjust Amplitude Calibrator— 5 mV
O
a. Set the VERTICAL SENSITIVITY to 1 mV/CM, and the
VERTICAL - f and — INPUT switches to DC and Trigger
control to AUTO.
b. Set the SWEEP TIME/CM to 20 ,uSEC, and the HORI
ZONTAL DISPLAY to SWEEP NORMAL ( X I) .
c. Set the Standard Amplitude Calibrator to supply a
5-millivolt square wave, and connect a 50-ohm cable from
the output connector to the VERTICAL + INPUT connector.
d. Connect a short patch cord from the 5 mV CAL. OUT
connector to the VERTICAL — INPUT connector.
e. Check— Trace separation at the vertical center of the
display should not exceed 1.5 mm (3%).
NOTE
See Fig. 6 -3 2 . The d is p la y a m p litu d e in the illu s
tra tio n has been reduced w ith the VARIABLE co n
tro l to a llo w presentation o f the d is p la y w ith in
the gra ticu le a re a ; the actual d isp la y w ith the
control settings o u tlin ed in steps (a )
through
(d ) should have an a m p litu d e o f 1 0 cm , w ith the
center trace either a single line, or separated by
the am ount o f d iffe re n ce betw een the S tandard
A m p litu d e C a lib ra to r v o lta g e and the Type 503
CAL. OUT v o lta g e .
f. Adjust CAL. ADJ. R880 for no trace separation at the
center of the display.
TABLE 6-8
DISPLAY
HORIZONTAL
Check
Tolerance
( ± 5 % )
X2
1 large mark/2 cm
± 1 mm/2 cm
X5
1 large mark/5 cm
± 2 .5 mm/5 cm
X10
1 small mark/cm
+ 0 .5 mm/cm
X20
1 small mark/2 cm
± 1 mm/2 cm
X50
1 small mark/5 cm
± 2 .5 mm/5 cm
53. Check Calibrator Accuracy— 500 mV
a. Change the VERTICAL SENSITIVITY switch to .1 VOLTS/
CM.
b. Change the Standard Amplitude Calibrator to 0.5
volts output.
c. Move the patch cord from the 5 mV CAL. OUT con
nector to the 500 mV CAL. OUT connector.
d. Check—Trace separation at the display center not
to exceed 1.5 mm.
54. Check Calibrator Symmetry
a. Change the VERTICAL + INPUT switch to GND.
b. Change the SWEEP TIME/CM to .2 mSEC, and adjust
the LEVEL control for a stable display.
c. Rotate the SWEEP TIME/CM VARIABLE control counter
clockwise until one cycle o f the calibrator waveform occupies
10 cm of the graticule.
d. Check— The horizontal length of the positive and neg
ative portions of the displayed cycle should not differ from
each other by a ratio of more than 2:1.
55. Check Calibrator Frequency
a. Return the SWEEP TIME/CM VARIABLE to CALIBRATED.
b. Change the SWEEP TIME/CM switch to 1 mSEC.
c. Check— The length of one calibrator cycle should be
between 1.9 and 5.7 cm (350 Hz ± 5 0 % ).
56. Check Calibrator Jitter
a. Change the HORIZONTAL DISPLAY switch to X 50.
The INTENSITY may have to be increased to view the dis
play.
b. Rotate the HORIZONTAL POSITION control counter
clockwise to center the leading edge of the last cycle
of the calibrator waveform.
c. Check— Horizontal jitter not to exceed 1.5 cm.
d. Disconnect all equipment.
©1
6-31
Summary of Contents for 503
Page 5: ...Fig 1 1 Type 503 Oscilloscope Type 503 ...
Page 10: ...O perating Instructions Type 503 2 3 Fig 2 2 Type 503 Oscilloscope front panel ...
Page 23: ...NOTES ...
Page 33: ...NOTES ...
Page 49: ...Type 503 colibrotion__ 6 2 ...
Page 78: ...NOTES ...
Page 111: ...G Ab A B L O C K D I A G R A M ...
Page 112: ...T R K a G iE B IN P U T A M P L IF IE R T V p E 5 0 3 O SCILLO SCO PE D ...
Page 115: ... D Z 2 I j O H OA uit zul Z Q 3 O 0 7 7 ...
Page 116: ...c L O a l LLl A uJ u e x a uJ LLl t i ...
Page 118: ...0 S 2 J 7 ...
Page 119: ... J 0 o lii I in I I I 2 z 3i i pfSg D T IM IN G i S W IT C H ...
Page 121: ...n I u J a d i ...
Page 132: ...FIG 1 FRONT ...
Page 133: ...FIG 1 FRONT TYPE 503 OSCILLOSCOPE ...
Page 134: ...FIG 2 SWITCHES ...
Page 135: ...FIG 2 SWITCHES TYPE 503 OSCILLOSCOPE ...
Page 136: ...FIG 3 CRT SHIELD 2 5 A I ...
Page 137: ...FIG 3 CRT SHIELD f TYPE 503 OSCILLOSCOPE ...
Page 138: ...FIG 4 CHASSIS REAI ...
Page 139: ...TYPE 503 OSCILLOSCOPE ...
Page 140: ...FIG 5 CABINET 7 ...
Page 141: ...TYPE 503 OSCILLOSCOPE ...