High-Speed Voltage Output – up to 1 MS/s/Channel, up to 16 Bits, up to 32 Channels
CH0
Amp
CH0
12-Bit DAC
CH1
Amp
CH1
12-Bit DAC
CH2
Amp
CH2
12-Bit DAC
CH3
Amp
CH3
12-Bit DAC
CIS
EEPROM
CONFIG
EEPROM
CH4
Amp
CH4
12-Bit DAC
DAC
Control
Bus
Interface
Control/Data
Address/Control
Data
AO
Control
Bus
Interface
FPGA
CH5
Amp
CH5
12-Bit DAC
FIFO
DAQ-STC
Calibration
Control
EEPROM
Data In Interface
CH6
Amp
CH6
12-Bit DAC
Digital
Thermometer
DAC
FIFO
CH7
Amp
CH7
12-Bit DAC
Calibration
DACs
24
Calibration
Mux
Calibration
ADC
8
Analog Output Bus
Timing/Control Interface
Analog Input
Timing/Control
PFI / Trigger
Timing
Trigger
IRQ
DAQ-STC
Counter/
RTSI Bus
Interface
Digital I/O
Timing I/O
Digital I/O (8)
+5 V
0.75 A
Figure 2. NI DAQCard-6715 Hardware Block Diagram
Control
CH0
Latch
CH0
Amp
Generic Mini
Bus
Interface
PCI
Bus
Interface
CH0
CH1
MITE
Data
Address/Data
IRQ
DAC
FIFO
CH1
Amp
CH1
Latch
EEPROM
EEPROM
Control
Register
Decode
CH3/7
Latch
CH3/7
Amp
CH3/7
AO
Control
DMA/
IRQ
FPGA
DMA
DAQ-STC
Calibration
Control
Bus
AO Control
Interface
Calibration
DACs
Data
24
Calibration
Mux
Calibration
ADC
8
Bus
Analog Output
Timing/Control
PFI / Trigger
Trigger
Interface
DMA/IRQ
RTSI Bus
Counter/
Timing I/O
Timing
DAQ - STC
Analog Input
Digital I/O (8)
Digital I/O
Timing/Control Interface
+5 V
1A
RTSI Bus
Note: CH4 through CH7 are found on 6713 and 6733 only
Figure 3. NI 671x and NI 673x Hardware Block Diagram
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