Tektronix 503 User Manual

Calibration— Type 503
NOTE
In all succeeding Common Mode Rejection Ratio
checks, the display should be moved over the
entire graticule area during the check, as indicated
in steps (f) and (g ).
h. Check the remaining vertical attenuator settings listed
in Table 6-6. The generator output (4 V) is not changed for
the checks in Table 6-6.
i. Set the VERTICAL + and —INPUT switches to GND,
and change the HORIZONTAL + and —INPUT switches
to DC.
i. Move the signal cables to the HORIZONTAL INPUT
connectors, and set the HORIZONTAL switch to .2 VOLTS/
CM.
TABLE 6-6
SENSITIVITY
Settings
HORIZONTAL/VERTICAL
Signal
Amplitude
Maximum
Deflection
.2 VOLTS/CM 4 volts
2 mm
.1 VOLTS/CM 4 volts
4 mm
50 mV/CM
4 volts
8 mm
20 mV/CM 4 volts
2 cm
10 mV/CM 4 volts
4 cm
k. With the HORIZONTAL and VERTICAL POSITION
controls, move the display within the graticule viewing areas.
l. Check—Horizontal deflection not more than 2 mm.
m. Check the remaining horizontal attenuator settings
litsed in Table 6-6, leaving the generator output at 4 V.
n. Change the HORIZONTAL SENSITIVITY switch to 0.1
VOLTS/CM.
o. Change the HORIZONTAL —INPUT switch to GND,
and adjust the generator output for a trace 5 cm long (0.5 V
output).
p. Change the HORIZONTAL — INPUT to DC, and the
HORIZONTAL SENSITIVITY switch to 5mV/CM.
q. Check— Horizontal display not more than 2 cm long.
r. Change the HORIZONTAL SENSITIVITY to 2 mV/CM.
s. Check— Display not more than 5 cm long.
t. Change the HORIZONTAL SENSITIVITY to 1 mV/CM.
u. Check—Display not more than 10 cm long.
v. Change both HORIZONTAL INPUT switches to GND.
w. Set the VERTICAL SENSITIVITY switch to 5 mV/CM.
x. Set the VERTICAL + and —INPUT switches to DC.
y. Move the two signal cables from the HORIZONTAL
INPUT connectors to the VERTICAL INPUT connectors.
z. Check—Amplitude of the display not more than 2 cm
anywhere in the graticule area.
aa. Change the VERTICAL SENSITIVITY switch to 2 mV/
CM.
ab. Check— Display amplitude not more than 5 cm in
the graticule area.
ac. Change the VERTICAL SENSITIVITY switch to 1 mV/
CM.
ad. Check—Display amplitude not more than 10 cm.
33. Check Vertical Amplifier Frequency
Response
a. Remove the UHF T connector and one 50-ohm cable,
and connect the other cable from the 50-ohm termination
to the VERTICAL + INPUT connector.
b. Set the HORIZONTAL + and —INPUT switches to
GND, the VERTICAL + INPUT to DC, and the VERTICAL
-INPU T to GND.
c. Set the SWEEP TIME/CM switch to .1 mSEC, and the
HORIZONTAL DISPLAY switch t0 SWEEP NORMAL (X I).
d. Set the VERTICAL SENSITIVITY to 1 mV/CM and
adjust the generator output for a display 6 cm in amplitude.
e. Change the generator frequency to 450 kHz. The dis
play amplitude will decrease.
f. Check—The display amplitude should be equal to or
greater than 4.2 cm (—3 dB).
g. Repeat the frequency response check for all positions
of the VERTICAL + and —INPUT attenuator (SENSITIVITY)
switch.
34. Check Horizontal Amplifier Frequency
Response
a. Set the VERTICAL and —INPUT switches to GND,
the HORIZONTAL + INPUT to DC, and connect the signal
to the HORIZONTAL + INPUT.
b. Change the HORIZONTAL DISPLAY switch to HORIZ.
AMPLIFIER (SWEEP DISABLED).
c. Check that the HORIZONTAL SENSITIVITY switch is
set to 1 mV/CM.
d. Set the generator frequency to 50 kHz, and adjust the
generator output for a trace 6 cm long.
e. Change the generator frequency to 450 kHz. The trace
will shorten.
f. Check—The trace should be equal to or greater than
4.2 cm long (—3 dB).
g. Repeat the frequency response check steps d, e, and
f for all positions of the HORIZONTAL -f and —INPUT
attenuator (SENSITIVITY) switch.
6-24
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Tektronix 503 Specifications

General

Brand	Tektronix
Model	503
Category	Test Equipment
Language	English