Keithley 2701, Руководство пользователя

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Model 2701 User’s Manual Limits and Digital I/O 9-15
Figure 9-6
Setup to test 100
Ω
resistors
Limit 1 will be used to test for the 1% tolerance and Limit 2 will be used to test for the 5%
tolerance.
The resistance values for the 1% and 5% tolerances are calculated as follows:
R
1%
= 100
Ω ×
1% R
5%
= 100
Ω ×
5%
= 100
Ω ×
0.01 = 100
Ω ×
0.05
= 1
Ω
= 5
Ω
The high and low limits are then calculated as follows:
HI Limit 1 = 100
Ω
+ R
1%
HI Limit 2 = 100
Ω
+ R
5%
= 100
Ω
+ 1
Ω
= 100
Ω
+ 5
Ω
= 101
Ω
= 105
Ω
LO Limit 1 = 100
Ω
– R
1%
LO Limit 2 = 100
Ω
– R
5%
= 100
Ω
– 1
Ω
= 100
Ω
– 5
Ω
= 99
Ω
= 95
Ω
H
L
CH 1-10
Model 7700
Switching
Module
H
L
CH 11-20
B) Model 7700
INPUT SENSE
Model 2701
Input HI
Input LO
Sense HI
Sense LO
A) Front panel inputs
100
Ω
100
Ω
2701-900-01.book Page 15 Wednesday, August 3, 2011 9:43 AM