Omega Vehicle Security DAQ-16 user manual Digital Input/Output, Channel Bipolar, Unipolar, Gain =

5 6 7 8

J4

1 2 3 4

Channel 0 select

Channel 0 gain

Channel 1 gain

Channel 1 select

Figure 2-5. Jumper J4 Configuration

Table 2-3 lists configuration options for jumper J4.

	Channel 0	Channel 1
Bipolar	connect 1-5	connect 3-7
Unipolar	open 1-5	open 3-7
Gain = 1	connect 2-6	connect 4-8
Gain = 2	open 2-6	open 4-8

Table 2-3. Jumper J4 Configuration

When configured for unipolar operation, the output voltage can be calculated from the equation:

Aout = Vref *

For bipolar operation, the equation becomes:

CODE

4096

* gain

Aout =

CODE

2048

- 1 * Vref * gain

2.3Digital Input/Output

The DAQ-16 offers four bits of digital output and four bits of digital input for control/monitoring of external digital devices. The four digital output lines are LS TTL compatible and will initialize low (0 volts) on power-up. The four digital inputs are also LS TTL compatible. There is no termination provided on the digital input lines and a read of an unused digital input will result in an indeterminate value.

DAQ-16 Users Manual 15