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OM-USB-1608G-Series
16-Channel Voltage Input High Speed USB Data Acquisition Modules
- 16-Bit High-Speed USB Devices
- Acquisition Rates Ranging From 250 kS/s to 500 kS/s
- 8 Differential (DIFF) or 16 Single-Ended (SE) Analog Inputs (Software Selectable)
- Up to 2 Analog Outputs
Product Overview
- A/D Conversion Successive approximation
- Bandwidth 750 kHz
- Calibration Calibration Method: Self-calibration (firmware), Calibration Interval: 1 year (factory calibration), AI Calibration Reference +5V, ±2.5 mV maximum (actual measured values stored in EEPROM)
- CMRR 86 dB
- Configuration Parameters Edge/Level Trigger Mode, Pull-Up/Down Configuration, User-Configurable Input/Output
- Data Interface Ethernet
- Data Interface Note Configuration Method: TracerDAQ Software;Supported Operating System: Microsoft Windows® VISTA/7/8/10 (32-bit and 64-bit)
- Digital Input Digital: Low = –0.5 to 0.8 Vdc
- Digital I/O Note Digital Input/Output Digital Type: CMOS Number of I/O: 8 Configuration: Each bit may be configured as input (power on default) or output Pull-Up Configuration: The port has 47 kΩ resistors configurable as pull-ups or pull-downs (default) via internal jumper (W1) Digital I/O Transfer Rate (System-Paced): 33 to 8000 port reads/writes or single bit reads/writes per second typ, system dependent Input High Voltage: 2.0V minimum, 5.5V absolute maximum Input Low Voltage: 0.8V maximum, -0.5V absolute minimum,0V recommended minimum Output High Voltage: 4.4V minimum (IOH = -50 µA), 3.76V minimum (IOH = -2.5 mA) Output Low Voltage: 0.1V maximum (IOL = 50 µA), 0.44V maximum (IOL = 2.5 mA) Output Current: ±2.5 mA maximum;Cross talk: -75 dB;Transfer Rate: Digital and Counter: 33 to 8000 port reads/writes or single bit reads/writes per second typ, system dependent;Pulse Width: Trigger Pulse Width: 100 ns minimum, Counter: High Pulse Width: 25 ns, minimum, Low Pulse Width: 25 ns, minimum, Clock Pulse Width: AxCKI: 400 ns minimum, AxCKO: 400 ns minimum;Schmitt Trigger Hysteresis: 0.4V to 1.2V
- Digital Output ±2.5 mA maximum
- Frequency Input Range 20 MHz
- Height 35.6 mm
- Impedance Input 1 GΩ (Power on); 820 Ω (Power off)
- Input Bias Current ±10 nA
- Input Capacitance 60 pf
- Input Configuration Connected Software
- Input Type Voltage, Digital
- Input Voltage Note Absolute Maximum Input Voltage: CHx Relative to AGND: ±25V maximum (Power On); ±15V maximum (Power Off)
- LED Indicators Supply Status LED
- Length 127 mm
- Memory Non-Volatile
- Microcontroller Internal Clock Frequency: 64 MHz
- Number of Channels, Input Analog: 8 Differential /16 Single-Ended, Digital: 8, Counter: 2
- Number of Channels, Output Digital: 8
- Operating Temperature, Max 55 °C
- Operating Temperature, Min 0 °C
- Output Settling Time 10V Step: 40 μs
- Output Signal Digital, Clock
- Pull-down Resistor GND
- Pull-up Resistor 47 kΩ
- Relative Humidity 0 to 90% RH non-condensing
- Sampling Rate Note Software Paced: 33 to 4000 S/s, Hardware Paced: 250 kS/s max
- Series ID OM-USB-1608G-Series
- Slew Rate 9 V/μs
- Stability 15 ppm/1000 hours
- Storage Temperature, Max 85 °C
- Storage Temperature, Min -40 °C
- Supply Current 230 mA
- Supply Power Note +5V User Output Voltage Range (Available at Terminal 42): 4.9V minimum to 5.1V maximum +5V User Output Current (Available at Terminal 42): 10 mA maximum
- Supply Voltage 5 Vdc
- Temperature Coefficient 5 ppm/°C
- Timer Output Timer Terminal Name: TMR;Timer Type: PWM output with count, period, delay, and pulsewidth registers;Output Value: Default state is idle low with pulses high, software selectable output invert;Internal Clock Frequency: 64 MHz;Register Widths: 32-bit;High Pulse Width:15.625 ns minimum;Low Pulse Width:15.625 ns minimum;Output High Voltage: 4.4V minimum (IOH = -50 μA), 3.76V minimum (IOH = -2.5 mA);Output Low Voltage: 0.1V maximum (IOL = 50 μA), 0.44V maximum (IOL = 2.5 mA);Output Current: ±2.5 mA maximum
- USB Cable Length 3 m
- Voltage Measurement Range ±10V, ±5V, ±2V, ±1V
- Warm Up Time 15 min
- Weight 160 g
- Width 89.9 mm
Supported Applications
The Omega OM-USB-1608G Series comprises low-cost, high-speed USB data acquisition modules designed for analog and digital I/O tasks. These devices support voltage input measurement with configurable single-ended or differential channel arrangements. The series is compatible with Windows VISTA/7/8/10 (32-bit and 64-bit) operating systems and includes TracerDAQ software for data acquisition and signal generation.
Operating Conditions & Performance
The OM-USB-1608G Series operates within an ambient temperature range of 0 to 55°C (32 to 131°F) with a storage temperature capability from -40 to 85°C (-40 to 185°F). Humidity ratings are specified as 0 to 90% RH non-condensing. The modules feature 16-bit resolution and support analog input ranges of ±10V, ±5V, ±2V, and ±1V.
Performance specifications for DC voltage measurement include a Gain Error of 0.024% of Reading and an INL Error of 0.0076% of Range. Absolute accuracy at full scale varies by range: 4075 µV (±10V), 2266 µV (±5V), 968 µV (±2V), and 561 µV (±1V). Noise performance is documented as typical counts of 6 to 9 depending on the selected range. The series supports acquisition rates from 250 kS/s up to 500 kS/s, with specific sampling speeds dependent on the model variant.
Key Performance Metrics
- Analog Input: Up to 16 single-ended (SE) or 8 differential (DIFF) channels; input impedance ≥10 MΩ is not explicitly stated in the primary series data sheet but referenced in supporting documentation as a general characteristic of similar Omega USB modules.
- Digital I/O: 8 individually configurable lines with TTL/CMOS compatible logic levels and ±25 mA output current capability (per family manual).
- Counters/Timers: Two 32-bit counter input channels and one timer output channel.
Configuration Options
The series offers three primary configurations distinguished by sampling rate and analog output capability. All models utilize a USB Type-B connector for power (+5V) and data communication, compatible with both USB 1.1 and USB 2.0 ports.
Model Configurations
- OM-USB-1608G: Features a sampling rate up to 250 kS/s, two 32-bit counter inputs, one timer output, and eight DIO lines. No analog outputs.
- OM-USB-1608GX: Increases the maximum sampling rate to 500 kS/s while maintaining two 32-bit counters, one timer output, and eight DIO lines. No analog outputs.
- OM-USB-1608GX-2AO: Provides a 500 kS/s sampling rate plus two calibrated ±10V analog outputs in addition to the standard digital I/O and counter/timer features.
Software Options
The series supports TracerDAQ software for basic acquisition. The OM-USB-1608GX variants are also compatible with TracerDAQ Pro (SWD-TRACERDAQ-PRO), which expands capabilities to include up to 48 channels, alarm conditions, measurements windows, annotations, and advanced triggering options.
Key Product Differences
The primary distinction between the OM-USB-1608G and OM-USB-1608GX models is the maximum sampling rate: 250 kS/s versus 500 kS/s. The OM-USB-1608GX-2AO variant further differentiates itself by including two analog output channels capable of ±10V calibrated signals, whereas the base G and GX models lack analog outputs.
Physical dimensions for the series are listed as 127 L × 89.9 W × 35.6 H mm (5.00 × 3.53 × 1.40") with a weight of approximately 160 g (0.35 lb). The enclosure material is plastic, and the device carries CE certification.
PDFs & Manuals
Software & Drivers
