Software-Timed Analog Output –
16-Bit, 16 or 32 Channels
Control
Address
Data
Bus
Interface
Logic
Main
Voltage
Circuit
Control/Lines
nvRAM/
DAC
Control
RAM
Addr/Ctrl
Digital
I/O
Serial
Number
EEPROM
16-Bit
DAC
RAM Data
DAC
Out
Main
Current
Circuit
Current
Output
CircuitX16
16
Voltage
Output
Circuit X16
16
Ordering Information
PCI
I/O Connector
PCI/PXI/CompactPCI Bus
NI PCI-6704 ..................................................................777306-01
NI PCI-6703 ..................................................................778316-01
PXI
nvSRAM
DIO Lines<7..0>
6704 Only
NI PXI-6704 ..................................................................777796-01
Includes data acquisition driver software.
BUY NOW!
+5 V
.75 A
Self-Resetting Circuit Breaker
Temperature
Sensor
For complete product specifications, pricing, and accessory
information, call (800) 813 3693 (U.S. only) or go to
ni.com/dataacquisition
.
Figure 1. NI 670x Hardware Block Diagram
Specifications
Analog Output
Output Characteristics
Device
NI 6703
NI 6704
Voltage
16
16
Channels
Current
0
16
Total
16
32
Digital I/O
Digital logic levels
Level
Input low voltage
Input high voltage
Output low voltage
(I
out
= 16 mA)
Output high voltage
(I
out
= 16 mA)
Minimum
0V
2V
–
2.4 V
Maximum
0.8 V
5V
0.45 V
–
Resolution......................................................... 16 bits, 1 in 65,536
Type of DAC...................................................... Enhanced R-2R
Data transfers .................................................. Programmed I/O
Voltage Output
Ranges.............................................................. ±10.1 V
Output coupling ................................................ DC
Power-on state ................................................. Independent, user-defined
Number of channels......................................... 8 input/output
Compatibility .................................................... 5 V TTL/CMOS
Power-on state ................................................. Input (high impedance)
Bus Interface
PCI, PXI ............................................................. Slave
Current Output (NI 6704 Only)
Range................................................................
Type ..................................................................
Output compliance ...........................................
Power-on state .................................................
0.0; 0.1 to 20.2 mA
Source, does not require external excitation source
0 to 10 V
Independent, user-defined
Physical
Dimensions (not including connectors)
PCI.............................................................. 17.5 by 10.7 cm (6.9 by 4.2 in.)
PXI.............................................................. 16.0 by 10.0 cm (6.3 by 3.9 in.)
I/O connector.................................................... 68-pin male SCSI II type
For more detailed specifications, please refer to the product manual.
2
National Instruments • Tel: (800) 813 3693 • info@ni.com • ni.com
NI [ NATIONAL INSTRUMENTS CORPORATION ]
