Tektronix CURVE-TRACER 576 Instruction Manual page 181

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w. Set the DC voltmeter to measure 10 volts ±0.2 volt.
x. Connect the male BNC to dual binding post adapter
to the Calibration Fixture External Monitor connector.
y. Connect the patch cords between the dual binding
posts and the DC voltmeter.
z. CHECK FOR-DC voltmeter reading of 10 volts ±0.2
volts (10 V ±2%).
aa. Turn the Type 576 AMPLITUDE switch and the
Calibration Fixture Step Generator switch together
throughout their ranges.
bb. CHECK FOR-DC voltmeter reading of 10 volts
±0.2 volts ( 10 V ±2%) for each setting of the Type 576
AMPLITUDE switch.
cc. Disconnect the DC voltmeter from the calibration
fixture.
Control Settings (Partial List)
Type 576
INTENSITY
FOCUS
VERTICAL
Visible Spot
Smallest Spot Possible
20mA
8. Check Collector Supply Polarity, Peak Voltage
and Ripple
a. Set the Type 576 and Calibration Fixture controls as
shown in the list of Initial Control Settings at the beginning
of the procedure, with changes as shown in the preceding
partial I ist.
b. Press the ZERO button and position the spot to the
center of the CRT graticule.
Performance Check-Type 576
c. Turn the VARIABLE COLLECTOR SUPPLY control
clockwise to obtain a 10 division trace.
d. CHECK FOR-Horizontal trace extending out from
both sides of the center vertical graticule line.
e. Set the POLARITY switch to -(PNP) and turn the
VARIABLE COLLECTOR SUPPLY fully clockwise.
f. CHECK FOR-Horizontal trace extending to the left
from the tenth vertical graticule line (along top of the
graticu I e).
g. Set the POLARITY switch to +(NPN).
h. CHECK FOR-Horizontal trace extending to the
right from the zero vertical graticule line (along bottom of
the graticu le).
i. Set the MODE switch to DC.
j. Set the HORIZONTAL switch and MAX PEAK
VOLTS as shown in Table 2-3. For each setting of these
switches, perform the following procedure:
1. CHECK FOR-Spot displaced from zero vertical
graticule line as shown in Table 2-3 under peak volts.
2. Set the DISPLAY OFFSET Selector switch to
HORIZ X10.
3. Position the spot onto the CRT with the
CENTERLINE VALUE switch.
4. CHECK FOR-Width of spot no greater than
shown in Table 2-3 under DC ripple.
TABLE 2-3
Check Collector Supply Peak Voltage and DC Ripple
Switch Settings Peak Voltages DC Ripple (Peak-to-Peak)
MAX PEAK
HORIZONTAL VOLTS
Voltage Divisions Voltage Divisions
2V 15
v
15
v
+35% -5%
7.5 div +2.6 div, -0.37 div 2% of 15 V 1.5 div
10
v
75
v
75
v
+35%, -5% 7.5 div +2.6 div, -0.37 div 2% of 75 V 1.5 div
50
v
350
v
350
v
+35% -5% 7 div +2.4 div, -0.35 div 2% of 350 V 1.4div
200
v
1500
v
1500
v
+35%, -5% 7.5 div +2.6 div, -0.35 div 2% of 1500 V 1.5 div
ADD AUG 1984
A-23