Omega-vehicle-security DAQ-16 Manuale Utente Scaricare il pdf (Pagina 13)

+32,767

+65,535

+Vmax

+16,384

+49,152

+32,768

+Vmax/2

-32,768

+32,768

-16,384

n/a

+16,384

n/a

-Vmax/2

-32,768

n/a

-Vmax

bipolar

unipolar

bipolar

unipolar

2’s Complement2’s ComplementBinaryBinaryVoltage

Table 2-2. A/D Conversion Format Examples

In order to calculate the actual input voltage from the digital "code" provided by the DAQ-16,

the user must know the configuration used to acquire the data. Given this information, the

input voltage can be calculated using the equations below:

Unipolar, binary

input = * Vmax

CODE

65, 536

Bipolar, binary

input = - * 2 * Vmax

CODE

65, 536

Unipolar, 2’s complement

input = + * Vmax

CODE

65, 536

Bipolar, 2’s complement

input = * 2 * Vmax

CODE

65, 536

DAQ-16 Users Manual 13

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 29 30

Data Acquisition Adapter 1
Users Manual 1
WARRANTY/DISCLAIMER 2
RETURN REQUESTS/INQUIRIES 2
http://www.omega.com 3
Declaration of Conformity 5
Table of Contents 6
1. Introduction 6
List of Figures and Tables 7
1.2 DAQ-16 Specifications 9
2.3 Digital Input/Output 15
2.4 Base Address 16
2.5 Clock Selection 17
2.6 Trigger Selection 20
2.7 Direct Memory Access 21
2.8 Interrupts 22
Factory default = IRQ 5 22
3. External Connections 23
4.1 Register Description 25
DAQ-16 Users Manual 30
Version 2.20 30
January 28, 1999 30
Part No. 940-0032-220 30

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