Table 5-12: Incremental Accuracy; Table 5-13: Incremental Accuracy Using Step Multi .1X - Tektronix 371B Service Manual

371B Service Manual
17. CHECK that the voltage difference between adjacent steps is within
1000 mV"20 mV.
18. Repeat Steps 15 to 17 for each STEP in Table 5–12.

Table 5-12: Incremental Accuracy

STEP
0
1
2
3
4
5
6
7
8
9
10
Voltage difference between adjacent STEPs is 2000mV "40mV
19. Set the STEP MULTI .1X control to on, and the horizontal sensitivity to
200 mV/DIV STEP GEN.
20. Repeat Steps 6 through 18 using Table 5–13 instead of Table 5–12.
21. Proceed to the "Setup Conditions" for procedure D9 to check step generator
amplitude accuracy in voltage mode. Otherwise, perform the following steps.
22. Set POWER switch to off.
23. Change the position of the jumper J340 from CAL to ZERO on the A3 A/D
board.

Table 5-13: Incremental Accuracy Using STEP MULTI .1X

STEP
0
1
2
3
4
DMM Reading (")
-62 to +62 mV
1.898 to 2.102 V
3.858 to 4.142 V
5.818 to 6.182 V
7.778 to 8.222 V
9.738 to 10.262 V
11.698 to 12.302 V
13.658 to 14.342 V
15.618 to 16.382 V
17.578 to 18.422 V
19.538 to 20.462 V
DMM Reading (")
-12 to +12 mV
180 to 220 mV
372 to 428 mV
564 to 636 mV
756 to 844 mV
Performance Verification
5-73