Advantech PCI-1716H handleiding
Handleiding
Je bekijkt pagina 21 van 60
13 PCI-1716_Series User Manual
Chapter 2 Installation Guide
2.4 Analog Input Signal Connection
An analog input channel measures the voltage (VS) of the external source. Each two
channels, for example, AI0 and AI1, AI2 and AI3, etc., can be configured as a differ-
ential input channel, or as two separate single-ended channels. When configured as
a differential channel, even number channel is the positive terminal, and odd number
channel is the negative terminal. When configured as separate single-ended chan-
nels, voltage should be applied between channel terminal and analog ground
(AGND) terminal.
The voltage is routed through an analog multiplexer (MUX), amplified or attenuated
by a programmable gain instrumentation amplifier (PGIA), and sampled and con-
verted into a digital form of data by an analog-to-digital converter (ADC). Each chan-
nel is converted by the ADC in channel by channel order. That is, only one channel at
a time is being converted. This architecture is called multiplexed analog input.
Analog input signal connection and internal functional block diagram is shown in Fig-
ure 2.3.
Figure 2.3 Analog input signal connection.
2.4.1 Analog Input Configuration
The input configuration can be either differential or single-ended.
For differential configuration, connect the external source between an even number
of analog input (AI) terminal and the next odd number of AI terminal. For example,
connect between AI0 and AI1, or between AI8 and AI9. Differential configuration
rejects common-mode noise picked up from the wiring, which results in better perfor-
mance. However, it requires two channels to measure one external source.
For single-ended configuration, connect the external source between an AI terminal
and the analog ground (AGND) terminal. Only one channel is required to measure
the external source. However, it is more vulnerable to ground noise and common-
noise picked up from the wiring.
Bekijk gratis de handleiding van Advantech PCI-1716H, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Advantech |
| Model | PCI-1716H |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 5374 MB |
