Tektronix CURVE-TRACER 576 Instruction Manual page 157

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g. Set VARIABLE COLLECTOR SUPPLY to zero.
h. Turn power off and remove front porch.
i. Remove the guard box protective cover by loosening
the four screws shown in Fig. 5-10 immediately above
C339, C341, and C301.
j.
Connect an ohmmeter between white-black and
white-green wires on the rear wafer of the MAX PEAK
VOLTS switch (outside switch in the guard box).
NOTE
Meter lead resistance may cause an error on the LOW
SERIES R positions. It may be necessary to use
SENSE leads.
k. CHECK-Series resistors to be within tolerances as
listed in Table 5-17. Change MAX PEAK VOLTS and SERIES
R settings as required.
REV JAN 1982
Performance Check/Calibration-Type 576
TABLE 5-17
Check Series Resistors
MAX PEAK SERIES
VOLTS
RESISTORS TOLERANCE
15
v
1.4
o
1.0- 1.2
15
v
6.50
5.89- 6.51
15
v
30.00 28.50-31.5
15
v
140.o
o
133.0- 147.0
15
v
65o.o
o
617.0- 683.0
15
v
3 kO 2.85-3.15
15
v
14 kO 13.3- 14.7
15
v
65 kO 61.7- 68.3
350
v
300 kO
285-315
350
v
1.4 MO
1.33- 1.47
350
v
6.5 MO 6.17-6.83
5-29