Tektronix TAS 475 - Table 4-4: Time Base and Cursor Accuracies (Mag Off)

Performance Tests
•
Table 4-4: Time Base and Cursor Accuracies (Mag Off)
Time-mark to Time Cursor
Graticule Accuracy Readout Accuracy
Sec/Div Scale Time Mark Over Center
2nd and 10th
(Mag Off) Setting
8 Divisions Time Marks
10 ns
1
20 ns
±0.16 division 78.4 ns to 81.6 ns
20 ns 20 ns ±0.16 division 157 ns to 163 ns
50 ns 50 ns ±0.16 division 392 ns to 408 ns
100 ns
0.1 I1s
± 0.16 division 784 ns to 816 ns
200 ns
0.211S
±0.16 division
1.57
I1s to 1.63 I1s
500 ns
0.511
S
±0.16 division
3.92
I1s to 4.08 I1s
1 I1s
1 I1s
±0.16 division
7.84
I1s to 8.16 I1S
211
S
211
S
±0.16 division
15.711S to 16.311s
511
s
511
S
± 0.16 division
39.2
I1s to 40.8 I1S
10l1
s
1Ol1s
±0.16 division
78.4
I1s to 81.6 I1S
20l1
s
2Ol1s
±0.16 division
157
I1s to 163 I1S
•
5Ol1s
5Ol1s
±0.16 division
392
I1s to 408 I1S
100l1
s
0.1 ms ±0.16 division
784
I1s to 81611s
200l1
s
0.2
ms
±0.16 division 1 .57 ms to 1 .63 ms
500l1
s 0.5
ms ±0.16 division
3.92 ms to
4.08 ms
1 ms
1 ms
±0.16 division 7.84 ms to 8.16 ms
2ms
2ms ±0.16 division
15.7 ms to 16.3 ms
5 ms
5 ms
±0.16 division
39.2 ms to
40.8 ms
1The 10 ns sec/div scale is only available on the TAS 485.
13. Set ATIME to Off.
14.
Set the time mark generator as follows:
•
TAS 475 - 20 ns markers
•
T AS 485 - 10 ns markers
15.
Set the main sec/div scale as follows:
•
TAS 475 - 20 ns
•
TAS 485 -10 ns
•
16. Press the HORIZONTAL MENU button and set DELAY to On and MAIN
to Off.
TAS 475 and TAS 485 Service Manual
4-21
Scan by Zenith