High Performance Multi-Function I/O USB Data Acquisition Modules

The OMB-DAQ-2416 and the OMB-DAQ-2416-4AO are highly accurate, multi-function measurement and control modules for the USB bus. These modules are 24-bit analog input devices for voltage or temperature, with eight digital I/O lines and two counters. In addition to the features listed, the OMB-DAQ-2416-4AO also includes four analog output channels with 16-bit resolution, ±10V output range, and an aggregate 1000 Hz update rate.

System Expansion
With the addition of an optional OMB-AI-EXP32 analog input expansion module, the number of analog input channels on the OMB-DAQ-2416 or OMB-DAQ-2416-4AO can be doubled—increasing from 16 differential/32 single-ended inputs, to 32 differential/64 single-ended inputs. The expansion module also provides an additional 16 channels of DIO, bringing the total DIO count of the mated pair to 24.

All features of the OMB-DAQ-2416 series module are included when the OMB-AI-EXP32 is attached, including the ability to accommodate thermocouples on any input channel, built-in cold junction compensation, and open thermocouple detection. The OMB-AI-EXP32 can be plugged directly into a OMB-DAQ-2416 series module. The packaging for the OMB-DAQ-2416 series and the OMB-AI-EXP32 ensures ease of use in a variety of applications. Detachable screw terminals facilitate attaching and removing without re-wiring. The modules can easily be DIN-rail mounted for rack applications.

Software
The OMB-DAQ-2416 Series modules ship with an impressive array of software, including TracerDAQ®, a full-featured, out-of-the-box data logging, viewing, and analysis application. Driver support and detailed example programs are included for Universal Library programming libraries for Microsoft® Visual Studio® programming languages, and other languages, including DASYLab®, and ULx for NI LabVIEW® (comprehensive library of VIs and example programs compatible with 32-bit and 64-bit LabVIEW 2010 or later) and InstaCal^TM installation, calibration and test utility-powerful solutions for programmers and nonprogrammers alike. These modules operate under Microsoft Windows® VISTA/7/8/10 (32-bit and 64-bit) operating systems.

The OMB-DAQ-2416 Series data acquisition modules are supplied with TracerDAQ software which is a collection of four virtual instrument applications used to graphically display and store input data and generate output signals:

• Strip Chart—Log and graph values acquire from analog inputs, digital inputs, temperature inputs and counter inputs
• Oscilloscope—Display values acquired from analog inputs
• Function Generator—Generate waveforms for analog outputs
• Rate Generator—Generate waveforms for counter outputs

TracerDAQ PRO is an enhanced version of TracerDAQ. A comparison of some of the features included in TracerDAQ vs TracerDAQ PRO is shown on the PDF.

SPECIFICATIONS
A/D CONVERTER
(OMB-DAQ-2416, OMB-DAQ-2416-4AO)
A/D Converter Type: 24-bit sigma delta
A/D Data Rates:3750 samples/sec (S/s), 2000 S/s, 1000 S/s, 500 S/s, 100 S/s, 60 S/s, 50 S/s, 25 S/s, 10 S/s, 5 S/s, 2.5 S/s
Input Isolation: 500 Vdc min between field wiring and USB interface
Common Mode Rejection: Thermocouple mode, 110 dB; voltage mode, 90 dB

ANALOG INPUTS
(OMB-DAQ-2416, OMB-DAQ-2416-4AO, OMB-AI-EXP32)
Number of Channels: 16 differential/32 single-ended (thermocouples require differential mode) on OMB-DAQ-2416 or OMB-DAQ-2416-4AO. The OMB-AI-EXP32 is a multiplexer-based channel expansion module that adds an additional 16 differential/32 single ended channels.
Maximum Input Voltage: ±30V (power on), ±10V (power off)
Input Impedance: 2 G? (power on), 390 ? (power off)
Input Leakage Current: ±10.6 nA (OMB-DAQ-2416, OMB-DAQ-2416-AO); ±20 nA (OMB-AI-EXP32); ±1µA max for input voltage >±30 V
Input Capacitance: 590 pF
Crosstalk: 100 dB adjacent channels
Channel Gain Queue: Up to 64 elements, software configurable channel and range
Warm-Up Time: 45 minutes max (OMB-DAQ-2416, OMB-DAQ-2416-4AO); 15 minutes max (OMB-AI-EXP32)
Open Thermocouple Detect: Automatically enable when a channel is configured for a thermocouple sensor.
CJC Sensor Accuracy: ±0.15°C typical (15 to 35°C); ±0.5°C max (0 to 55°C)


ANALOG OUTPUT
(OMB-DAQ-2416-4AO ONLY)
Number of Channels: 4
Resolution: 16-bit
Range: ±10 Vdc
Absolute Accuracy: ±16.0 LSB
Relative Accuracy: ±4.0 LSB
Differential Non-Linearity: ±0.25 LSB typical; ±1 LSB max
Current: ±3.5 mA max
Power On and Reset State: DACs cleared to zero scale, 0V ± 50 mV
Noise: 30 µVRMS
Settling Time: 45 µs
Slew Rate: 1.0 V/µs
Throughput: Single channel, 1000 S/s (max, system dependent); multiple channels, 1000 S/s divided by the number of channels (max, system dependent)

ANALOG INPUT/OUTPUT
CALIBRATION
Recommended Warm-Up Time: 45 minutes max
Calibration: Firmware calibration
Calibration Interval: 1 year
Calibration Reference: 10.000V, ±5 mV max; actual measured values stored in EEPROM
Tempco: 5 ppm/°C max
Long Term Stability: 30 ppm/1000 hrs

DIGITAL INPUTS
(OMB-DAQ-2416, OMB-DAQ-2416-4AO, OMB-AI-EXP32)
Number of Digital I/O
Channels: 8 (OMB-DAQ-2416, OMB-DAQ-2416-4AO); 16 (OMB-AI-EXP32)
Configuration: Each DIO bit can be independently read from (DIN) or written to (DOUT). The DIN bits can be read at any time whether the DOUT is active or tri-stated.
Voltage Range: 0 to 15 Vdc
Type: CMOS (Schmitt trigger)
Characteristics: 47 k? pull-up/pulldown resistor, 28 k? series resistor
Maximum Input Voltage Range: 0 to 20 Vdc max (power on/off, relative to DGND)
Pull-Up/Pull-Down Configuration: All pins pulled up to 5V via individual 47 k? resistors (default configuration); pull-down capability is available by moving internal jumper
Transfer Rate (Software Paced): 500 port reads or single bit reads per second typical
Input High Voltage: 1.3V min, 2.2V max
Input Low Voltage: 1.5V max, 0.6V min
Schmitt Trigger Hysteresis: 0.4V min, 1.2V max

DIGITAL OUTPUTS
(OMB-DAQ-2416, OMB-DAQ-2416-4AO, OMB-AI-EXP32)
Number of Digital I/O Channels:
8 (OMB-DAQ-2416, OMB-DAQ-2416-4AO); 16 (OMB-AI-EXP32)
Configuration: Each DIO bit can be independently read from (DIN) or written to (DOUT). The DIN bits can be read at any time whether the DOUT is active or tri-stated.
Characteristics: 47 k? pull-up, open drain DMOS transistor
Pull-Up Configuration: All pins pulled up to 5V via individual 47 k? resistors by default
Transfer Rate (Software Paced): 500 port writes or single bit writes per second typical
Output Voltage Range: 0 to 5V (no external pull-up resistor, internal 47 k? resistors connected to 5V by default); 0 to 15V max
Drain to Source Breakdown Voltage: 50V min
Off-State Leakage Current: 0.1 µA
Sink Current Capability: 150 mA max continuous per output pin; 150 mA max continuous for all eight channels
DMOS Transistor On-Resistance (Drain to Source): 4 ?

COUNTERS
(OMB-DAQ-2416, OMB-DAQ-2416-4AO)
Number of Channels: 2
Resolution: 32-bit
Counter Type: Event counter
Input Type: Schmitt trigger, rising edge triggered
Counter Read/Write Rates (Software Paced): 500 reads or writes per second (system dependent)
Input Characteristics: 562 k? pull-up resistor to 5V, 10 k? series resistor
Input Voltage Range: ±15V max
Maximum Input Voltage Range: ±20V max (power on/off)
Input High Voltage: 1.3V min, 2.2V max
Input Low Voltage: 1.5V max, 0.6V min
Schmitt Trigger Hysteresis: 0.4 min, 1.2V max
Input Bandwith (-3dB): 1 MHz
Input Capacitance: 25 pf
Input Leakage Current: ±120 nA
Input Frequency: 1 MHz max
High Pulse Width: 500 ns min
Low Pulse Width: 500 ns min


GENERAL
OMB-DAQ-2416, OMB-DAQ-2416-4AO
DATA ACQUISITION MODULES
Memory: EEPROM
Microcontroller: One high-performance 8-bit RISC microcontroller with USB interface (non-isolated); one high-performance 16-bit RISC microcontroller for measurements (isolated)
Power: 5V ±5%, 340 mA supplied by included AC adaptor (OMB-DAQ-2416-ADAP)
User Output Voltage: 5V, 10 mA max available (pin 35)
Isolation: 500 Vdc min measurement system to PC
USB Device Type: USB 2.0 (full-speed)
Device Compatibility: USB 1.1, USB 2.0
USB Cable Length: 5 m (16') max
Dimensions: 245 L x 146 W x 50 mm H (9.6 x 5.7 x 2.0")
Input Connections: Detachable screw terminal blocks (accept 16 to 30 AWG wire)
Operating Temperature: 0 to 50°C (32 to 122°F), 0 to 90% RH non-condensing
Storage Temperature: -40 to 85°C (-40 to 185°F)
Weight: 463 g (16.3 oz)

OMB-AI-EXP32
EXPANSION MODULE
User Output Voltage:
+5 V, 10 mA max available (pin 19)
Dimensions: 245 L x 146 W x 50 mm H (9.6 x 5.7 x 2.0")
Input Connections: Detachable screw terminal blocks (accept 16 to 30 AWG wire)
Operating Temperature: 0 to 50°C (32 to 122°F), 0 to 90% RH non-condensing
Storage Temperature: -40 to 85°C (-40 to 185°F)
Weight: 400 g (14.1 oz)