Chapter3 HardwareOverview6023E/6024E/6025EUser Manual 3-2 ni.com

Figure 3-2 showsthe blo ck diagram for the DAQCard-6024E.

Figure3-2. DAQCard-6024EBlock Diagram
Analog Input

The analog input section of each device is software configurable. The

following sections describe in detail each of the analog input settings.

Input Mode

Thedevices have three different input modes—nonreferencedsingle-ended

(NRSE),referenced single-ended (RSE), and differential (DIFF) input. The

single-ended input configurations provide up to 16 channels. The DIFF

input configuration provides up to eight channels. Input modes are

programmedon a per channel b asis for multimode scanning. For example,

you can configure the circuitry to scan 12 channels—four DIFF channels

andeight RSE channels. Table 3-1describesthe three input configurations.

I/OConnector
3
PCMCIAConnector
12-Bit
Sampling
A/D
Converter
NI-PGIA
Gain
Amplifier
Calibration
Mux
MuxMode
Selection
Switches
Analog
Muxes
Voltage
REF
Calibration
DACs
Dither
Circuitry
DAQ- STC
AnalogInput
Timing/Control
AnalogOutput
Timing/Control
DigitalI/O
Trigger
Counter/
TimingI/O
RTSIBus
Interface
Interrupt
Request
Bus
Interface
(8)
(8)
AIControl
Data(16)
Analog
Input
Control
EEPROM
Control
DAQ-PCMCIA
DAQ-STC
Bus
Interface
Analog
Output
Control
Bus
Interface
IRQ
ADC
FIFO
EEPROM
6Calibration
DACs
DAC0
DAC1
AOControl
Configuration
Memory
PFI/ Trigger
Timing
DigitalI/O (8)
+
–