Tektronix 502A - Page 84

Parts List — Type 502A
Resistors (continued)
Ckt. No.
Tektronix
Part Number
Description
S/N Range
R488 †
311-120 2.5 k
.2W Var.
.2 V/CM GAIN
R489
311-067
5 k
.2W
Var.
GAIN ADJ. FOR HORIZ. MODE
R490
302-683
68 k
½W
R491 †
309-086
3.5 meg
½W
Prec.
1%
R492 †
309-021
1.84 meg
½W Prec.
1%
R494t
302-224 220 k
½W
R495 †
311-125
50 k
.2W
Var. DC TRIG.
R499 †
304-473
47 k
1 W
R601 ††
311-057
50 
Var.
WW
SCALE I LLUM.
R602
302-101
100 
½W
R603 302-101
100 
½W
R604
308-142
30 
3 W
ww
5%
R618
302-102
1 k
½W
R619
302-105
1 meg
½W
R621
310-054
68 k
1 W
Prec.
1%
R622
311-015
10 k
Var.
WW
-150 VOLTS
R623 310-086
50 k
1 W Prec.
1%
R630 302-333 33 k ½W
R631
302-105 1 meg
½W
R632 302-102
1 k
½W
R633
302-105 1 meg
½W
R635
302-183 18k
½W
R636 302-105
1 meg
½W
R637 308-040
1.5 k
25 W
WW
5%
R639
302-333
33 k
½W
R642
302-104
100 k
½W
R643
302-104
100 k
½W
R644
302-101
100 
½W
R645
302-101
100 
½W
R646
306-150 15 
2 W
R647
306-150
15 
2 W
R648
309-030
1.8 k
½W
Prec.
1%
R649
310-068
42.226 k
1 W
Prec.
1%
R650
302-470 47 
½W
R651 302-470 47 
½W
R659
302-102
1 k
½W
R660
302-473 47 k
½W
R661
302-473
47 k
½W
R662
302-185
1.8 meg
½W
R665
306-273
27 k
2 W
R666
302-105
1 meg
½W
R668
302-102
1 k ½W
R669
302-105
1 meg
½W
R671
310-088
143 k
1 W
Prec.
1%
R673
310-055
220 k
W
Prec.
1%
† There are two parts of this description in your instrument; one in each of the Vertical Amplifiers,
†† Ganged with SW601. Furnished as a unit.
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