Manual PCI-DA12-2/4/6
20
The next table shows the location of the range data for each channel. The value stored is a number from
0 to 6, representing the 7 ranges (as shown in the table below). If you set any channel's range switch, be
sure to place the correct value in this table. Using the calibration program provided is generally the
easiest method of ensuring the table remains accurate.
Byte Address
Channel
Value
Range
Base + F0h
Channel 0
0
0 - 5V
Base + F1h
Channel 1
1
0 - 2.5V
Base + F2h
Channel 2
2
0 - 10V
Base + F3h
Channel 3
3
-5 - +5V
Base + F4h
Channel 4
4
-2.5 - +2.5V
Base + F5h
Channel 5
5
-10 - +10V
6
4 to 20mA
Note that the
analog reference voltage
(available on the connector at pin 29) is 5.1V. This is 2% higher
than the typical value of 5V to allow room for calibration. If the software calibration feature isn’t needed,
the user can apply 5V at pin 28 to be used as the DAC reference.
