User`s manual

XP8500 I/O Configurations s 23
Table 3-1. Gain and Bias Resistors for a Selected Range
of Input Voltages
R
bias
(kΩ)
Input Range
(V)
Gain
R
g
(kΩ)
Absolute
Mode
Ratiometric
Mode
-10.0 to +10.0 0.125 1.18 8.06 2.87
-5.0 to +5.0 0.250 2.37 6.65 2.49
-2.5 to +2.5 0.500 4.75 4.99 2.00
-2.0 to +2.0 0.625 5.90 4.53 1.82
-1.0 to +1.0 1.250 11.8 2.87 1.27
-0.5 to +0.5 2.500 23.7 1.69 0.787
-0.25 to +0.25 5.000 47.5 0.931 0.442
-0.10 to +0.10 12.500 118 0.392 0.196
0 to + 10.0* 0.250* 2.37* 39.2* 6.49
0 to +5.0 0.500 4.75 20.0 4.99
0 to +2.5 1.000 9.53 10.0 3.32
0 to +1.0 2.500 23.2 4.02 1.69
* These are the factory defaults.
Figure 3-4. Location of XP8500 Gain and Bias Resistors
Table 3-1 provides values for the gain and bias resistors for a range of
input voltages. The section on Selecting Gain and Bias Resistors at the
end of this chapter provides a detailed explanation on how to calculate
these values for a particular range of input voltages.
R8
R7
CH3
R6
R5
CH2
R4
R3
CH1
R2
R1
CH0
Bias Resistors
Gain Resistors