Tektronix TDS2022C Technical Reference page 128

Appendix A: Example of a Vertical Position Accuracy Test Spreadsheet
Table A-1: Vertical position accuracy test spreadsheet (cont.)
A B
5
1.88
6 1.84
7 1.80 1.80
8 1.76 1.76
9 1.72 1.72
10 1.68 1.68
11 1.64 1.64
12 1.60 1.6
13 1.56 1.56
14 1.52 1.52
15 1.48 1.48
16 1.44 1.44
17 1.40 1.4
18 1.36 1.36
19 1.32 1.32
20 1.28 1.28
21 1.24 1.24
22 1.20 1.2
23 1.16 1.16
24 1.12 1.12
25 1.08 1.08
26 1.04 1.04
27 1.00 1
28 0.96 0.96
29 0.92 0.92
30 0.88 0.88
31 0.84 0.84
A-2
C D
0.000
0.000
1.79 0.010
1.75 0.010
1.72 0.000
1.68 0.000
1.64 0.000
1.6 0.000
1.56 0.000
1.52 0.000
1.49 -0.010
1.45 -0.010
1.41 -0.010
1.37 -0.010
1.33 -0.010
1.29 -0.010
1.25 -0.010
1.21 -0.010
1.17 -0.010
1.13 -0.010
1.09 -0.010
1.05 -0.010
1.01 -0.010
0.966 -0.006
0.926 -0.006
0.886 -0.006
0.845 -0.005
E F G
‡ ‡ ‡
‡ ‡ ‡
-0.028 0.028 0.018
-0.0276 0.0276 0.018
-0.0272 0.0272 0.027
-0.0268 0.0268 0.027
-0.0264 0.0264 0.026
-0.026 0.026 0.026
-0.0256 0.0256 0.026
-0.0252 0.0252 0.025
-0.0248 0.0248 0.015
-0.0244 0.0244 0.014
-0.024 0.024 0.014
-0.0236 0.0236 0.014
-0.0232 0.0232 0.013
-0.0228 0.0228 0.013
-0.0224 0.0224 0.012
-0.022 0.022 0.012
-0.0216 0.0216 0.012
-0.0212 0.0212 0.011
-0.0208 0.0208 0.011
-0.0204 0.0204 0.010
-0.02 0.02 0.010
-0.0196 0.0196 0.014
-0.0192 0.0192 0.013
-0.0188 0.0188 0.013
-0.0184 0.0184 0.013
TDS2000C Series Oscilloscope Service Manual
H I
Offset in 0.005
volts
Total 0.01=I2*I4+I5
voltage
offset
Gain 1%
error
Equation =B7-C7
for cell
D7
Equation =-F7
for cell
E7
Equation
=(ABS(B7)*$I$8
for cell
+ $I$6)
F7
Equation =MIN
for cell
(D7-E7,F7-D7)
G7
Minimum 0.007=MIN
margin
(G7:G97)