4.5A/D Channel Range Setting — BASE+2

Each A/D channel has its own input range, controlled by a range code stored in the on-board RAM. If you want to change the range code for a given channel, select the channel as the start channel and the stop channel in the registers of BASE+4 and BASE+5 (described in the next section), and then write the range code to BASE+2 bit 0 to bit 2 and bit 4.

Table 4-3: Register for A/D channel range setting

Write

 

 

A/D channel range setting

 

 

 

 

 

 

 

 

 

 

 

Bit #

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

BASE+2

 

 

S/D

B/U

 

G2

G1

G0

 

 

 

 

 

 

 

 

 

S/D Single-ended or Differential

0 means the channel is single-ended, and 1 means it is differential. B/U Bipolar or Unipolar

0 means the channel is bipolar, and 1 means it is unipolar.

G2 to G0 Gain Code

34 PCI-1710/1710HG User's Manual

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Advantech PCI-1710 user manual A/D Channel Range Setting BASE+2

PCI-1710 specifications

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