National Instruments pci-6110e-6111e 用户手册

Chapter 3

Hardware Overview

3-2

 National Instruments Corporation

Figure 3-2 shows a block diagram for the PCI-6111E board.

Figure 3-2.  PCI-6111E Block Diagram

The analog input section for the 611X E board is software configurable. 
You can select different analog input configurations through 
application software. The following sections describe in detail each of 
the analog input categories.

The 611X E board supports only differential inputs (DIFF). The DIFF 
input configuration provides up to four channels on the PCI-6110E 
board and up to two channels on the PCI-6111E board.

A channel configured in DIFF mode uses two analog channel input lines. 
One line connects to the positive input of the board programmable gain 
instrumentation amplifier (PGIA), and the other connects to the negative 
input of the PGIA. For more information about DIFF input 

Timing

PFI / Trigger

I/O Connector

RTSI Bus

PCI Bus

Digital I/O (8)

EEPROM

+

CH0
Amplifier
–

Calibration

Mux

AI CH0

Mux

CH0

Latch

Analog
Trigger

Circuitry

2

Trigger Level

DACs

Trigger

12

4

Calibration

DACs

DAC0

DAC1

CH0
12-Bit ADC

Analog Input

Timing/Control

Analog Output

Timing/Control

Digital I/O

Trigger

Counter/

Timing I/O

RTSI Bus

Interface

DMA/IRQ

Bus

Interface

DAC

FIFO

Data (32)

Address/Data

Control

Data (32)

Analog

Input

Control

EEPROM

Control

DMA

Interface

DAQ-STC

Bus

Interface

Analog
Output
Control

I/O

Bus

Interface

Generic

Bus

Interface

PCI
Bus

Interface

IRQ
DMA

AO Control

CH0+

CH0-

+

CH1
Amplifier
–

AI CH1

Mux

CH1

Latch

12

CH1
12-Bit ADC

CH1+

CH1-

AI Control

Data (16)

Data (16)

ADC

FIFO

PCI_E.book  Page 2  Thursday, June 25, 1998  12:55 PM