PCI-6723 32-Channel Analog Output Device
The NI PCI-6723 is a high-density analog output device designed for multichannel stimulus generation, industrial control, hardware-in-the-loop testing and automated test equipment.
It provides 32 voltage output channels with 13-bit resolution. One channel can update at up to 800 kS/s, while the maximum update rate decreases as additional channels are included in the output task.
Eight TTL/CMOS-compatible digital I/O lines and two 24-bit counter/timers support external control, event counting, triggering and pulse generation.
Key Features of the PCI-6723
- 32 analog voltage output channels
- 13-bit DAC resolution
- 800 kS/s maximum single-channel update rate
- Approximately 204 kS/s aggregate operation with all 32 outputs active
- ±10 V analog output range
- 5 mA nominal output-current capability per channel
- Eight TTL/CMOS digital I/O lines
- Two 24-bit counter/timers
- Digital triggering
- RTSI synchronization support
- Two 68-pin connectors
- Conventional PCI interface
- NI-DAQmx driver support
PCI-6723 Technical Specifications
| Product Model | PCI-6723 |
|---|---|
| Part Number | 778701-01 |
| Product Type | High-density analog output device |
| Bus Interface | Conventional PCI |
| Analog Outputs | 32 voltage channels |
| DAC Resolution | 13 bits |
| Single-Channel Update Rate | 800 kS/s maximum |
| Full-Channel Operation | Approximately 204 kS/s aggregate with 32 channels |
| Output Range | ±10 V |
| Output Coupling | DC |
| Output Impedance | 0.1 Ω typical |
| Output Current | Approximately ±5 mA per channel |
| Digital I/O | 8 TTL/CMOS-compatible lines |
| Counter/Timers | 2 × 24-bit |
| Counter Base Clock | 20 MHz |
| Triggering | Digital |
| Front Connectors | 2 × 68-pin |
| Driver Software | NI-DAQmx |
PCI-6723 Part Number and Accessories
| Item | Part Number | Description |
|---|---|---|
| PCI-6723 | 778701-01 | 32-channel, 13-bit analog output device |
| Shielded 68-Pin Cable | Length dependent | Cable for compatible SCB-68-series accessories |
| SCB-68A | 782536-01 | Shielded screw-terminal connector block |
| NI 67xx Pinout Label | Accessory specific | Label matching the PCI-6723 connector pinout |
| RTSI Cable | Configuration dependent | Synchronizes compatible PCI measurement devices |
Because the PCI-6723 uses two connectors, a complete 32-channel system can require two cables and terminal blocks. Install the correct NI 67xx connector labels to prevent wiring errors.
32 Analog Voltage Outputs
The PCI-6723 can generate a separate voltage on each of its 32 channels. This high output density is useful for controlling multiple DUT inputs, simulating sensor signals and setting many analog operating points.
Each output should be connected to a compatible high-impedance load. Use external amplifiers when the application requires more than approximately 5 mA from a channel.
Hardware-Timed Waveform Generation
The analog outputs can generate buffered, hardware-timed waveforms. One channel supports updates up to 800 kS/s, while the available rate is shared when many outputs are updated.
Calculate the required aggregate data rate before configuring a multichannel waveform task.
Digital I/O and Counters
Eight digital lines support logic monitoring and control. The two counters can perform edge counting, frequency-related measurements and pulse generation.
RTSI Synchronization
An RTSI cable can share timing and trigger signals with other compatible PCI DAQ devices. This supports coordinated stimulus and acquisition across multiple boards.
PCI-6723 Applications
- Multichannel analog stimulus generation
- Sensor signal simulation
- Hardware-in-the-loop testing
- Automated test equipment
- Industrial process control
- Electronic load control
- Actuator command generation
- Laboratory automation
- Closed-loop control development
Sensor Simulation
Multiple outputs can simulate sensor voltages presented to an ECU or controller. Test software can reproduce normal, limit and fault-related signal conditions.
Hardware-in-the-Loop Testing
The 32 outputs are useful when a HIL system must generate many independent analog command or feedback signals. Additional isolation or power amplification may be required by the DUT.
Industrial Control
The device can generate low-current analog setpoints for compatible equipment. It should not be connected directly to industrial current loops without appropriate conversion hardware.
PCI-6723 Installation Workflow
Step 1: Confirm the PCI Interface
Verify that the host computer has an available conventional PCI slot.
Step 2: Install NI-DAQmx
Confirm operating-system and driver support for this legacy analog output device.
Step 3: Install the Board
Power down the computer, observe ESD precautions and secure the card.
Step 4: Connect Both Terminal Accessories
Use compatible cables and install the correct PCI-6723 pinout labels.
Step 5: Test Individual Outputs
Generate a low voltage on one channel and verify it with a calibrated meter before connecting the DUT.
Step 6: Validate the Multichannel Task
Confirm update rate, channel ordering, load impedance and safe startup values.
PCI-6723 Troubleshooting
An output voltage is lower than programmed
The connected load may draw too much current. Disconnect the load and verify the channel with a high-impedance meter.
Channels are connected to the wrong terminals
Confirm the connector number and use the correct NI 67xx pinout label.
The requested update rate is unavailable
The 800 kS/s maximum applies to one channel. Multichannel waveform generation shares the update resources.
The waveform contains discontinuities
Check the output buffer, regeneration settings, data-transfer rate and waveform timing.
The device is not detected
Verify PCI compatibility, board seating and NI-DAQmx support.
PCI-6723 Comparison
| Model | Voltage Outputs | Resolution | Best Suited For |
|---|---|---|---|
| PCI-6722 | 8 | 13-bit | Lower-channel waveform generation |
| PCI-6723 | 32 | 13-bit | High-density analog stimulus |
| PCI-6733 | 8 | 16-bit | Higher-resolution analog output |
| PCIe-6738 | 32 | 16-bit | Newer high-density PCIe output |
PCI-6723 vs PCI-6722
The PCI-6723 provides 32 analog outputs, while the PCI-6722 provides eight. Choose the PCI-6723 when output density is the primary requirement.
PCI-6723 vs PCIe-6738
The PCIe-6738 provides newer PCI Express connectivity and higher output resolution. Verify software, connector and timing compatibility before migration.
Why Choose the PCI-6723?
Choose the PCI-6723 for maintaining PCI systems that require 32 independent analog stimulus or control channels from one board.
PCI-6723 Frequently Asked Questions
What is the PCI-6723 part number?
The standard part number is 778701-01.
How many analog outputs are provided?
The PCI-6723 provides 32 voltage output channels.
What is the maximum update rate?
One channel can update at up to 800 kS/s. Multichannel rates are lower.
Can it directly drive high-current loads?
No. Use an external amplifier or driver for loads requiring more output current.
Does the PCI-6723 have analog inputs?
No. It is primarily an analog output device.
Recommended Related Products
- PCI-6722 Analog Output Device
- PCI-6733 Analog Output Device
- PCIe-6738 High-Density Analog Output Device
- View More NI DAQ Products
Request a Quote for the PCI-6723
Contact us for availability and pricing for the NI PCI-6723 32-Channel Analog Output Device. We can also help identify compatible cables, terminal blocks and newer PCI Express alternatives.
