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8-Channel High Speed Voltage Input USB Data Acquisition Module
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OM-USB-1208HS-Series

8-Channel High Speed Voltage Input USB Data Acquisition Module

  • 4 Differential/8 Single-Ended Analog Voltage Inputs
  • 13-Bit Resolution
  • Up to 4 Analog Outputs
  • 16 Digital I/O
OM-USB-1208HS-Series
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OM-USB-1208HS-SeriesData Sheet

Data Sheet
8-Channel High Speed Voltage Input USB Data Acquisition Module OM-USB-1208HS-Series OM-USB-1208HS-Series
Product Overview
  • Analog I/O Note Analog Input Note: A/D Converter: Successive approximation type;Input Ranges: Software selectable per channel;Differential: ±20V, ±10V, ±5V (the voltage level on each individual AIN input is limited to ±14V) ;Single Ended: ±10V, ±5V, ±2.5V, 0 to 10V ;Number of Channels: 4 differential/8 single-ended (software-selectable) ;Input Configuration: Multiplexed ;Channel Gain Queue: 8 unique consecutive elements, software configurable range for each channel ;Absolute Maximum Input Voltage:CHx IN to GND;Power On: ±25V maximum ;Power Off: ±12V maximum ;Input Impedance: 35 MΩ minimum ;Input Bandwidth (-3 dB):All input ranges, 2 MHz typical ;Input Leakage Current:±250 nA typ ;Input Capacitance: 32 pf typical ;Maximum Working Voltage: (Signal + Common Mode) ±20V: ±14V, ±10V: ±11V, ±5V: ±5.5V;Sampling Rate: 1 S/s to 1 MS/s, software programmable ;Sample Clock Source:Internal A/D clock or AICKI ;Burst Mode: Software-selectable, burst rate = 1 µs ;Throughput ;Software-Paced: 33 to 4000 S/s type, system-dependent ;Hardware-Paced: 1 MS/s maximum ;Resolution: 13-bits ;A/D No Missing Codes (Uncalibrated);Differential (Mode): 13-bits ;Single Ended (Mode): 12-bits ;CMRR: 60 Hz, 74 dB typical ;Analog Ouput Note: D/A Converter: DAC7553 ;Number of Channels:4 independent ;Resolution: 12-bits ;Output Range;Calibrated: ±10V ;Uncalibrated: ±10.2V ;D/A Update Rate ;Software Paced: 33 to 5000 S/s typ, system dependent ;Hardware Paced: 1 MHz maximum (per channel);Sample Clock Source: Internal D/A clock or AOCKI (AO external clock input pin) ;Monotonicity: 12-bits ;Output Current: ±3 mA maximum per channel ;Power Up and Reset State: 0V ;Output Noise: 0.53 mV rms ;Absolute Accuracy: ±0.1% ;Slew Rate: 6.7V/µs typical
  • Data Buffer 4 kS
  • Data Interface Ethernet
  • Data Interface Note USB Device Type: USB 2.0 (full-speed), Device Compatibility: USB 1.1, USB 2.0, USB Cable Length: 3 m (10') maximum;Configuration Method: TracerDAQ Software;Supported Operating System: Microsoft Windows® VISTA/7/8/10 (32-bit and 64-bit)
  • Digital Input Digital: Low = –0.5 Vdc
  • Digital I/O Note Digital Type: CMOS Number of I/O: 16 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 by an internal jumper (default setting is pull-down) Digital I/O Transfer Rate (System Paced): 33 to 8000 port reads/writes or single-bit reads/writes per second typical, 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 = -24 mA) Output Low Voltage: 0.1V maximum (IOL = 50 µA), 0.44V maximum (IOL = 24 mA) Output Current: ±24 mA maximum per terminal ;Pulse Width: Trigger Pulse Width: 100 ns minimum;Schmitt Trigger Hysteresis: 0.4V to 1.2V
  • Digital Output ±3 mA max
  • Electrical Connection Screw Terminal
  • Height 35.6 mm
  • Input Capacitance 32 pf
  • Input Type Digital
  • Input Voltage Note Absolute Maximum Input Voltage: CHx IN to GND Power On: ±25V maximum, Power Off: ±12V maximum
  • Length 127 mm
  • Memory Non-Volatile
  • Microcontroller Internal Clock Frequency: 40 MHz
  • Mounting DIN-Rail or Wall Mount
  • Number of Channels, Input Analog: 4 Differential / 8 Single-Ended, Digital: 16, Counter: 2
  • Operating Temperature, Max 50 °C
  • Operating Temperature, Min 0 °C
  • Pull-down Resistor 47 kΩ
  • Pull-up Resistor 47 kΩ
  • Relative Humidity 0 to 90% RH non-condensing
  • Sampling Rate 1 Hz to 1 MHz (1 to 1,000,000 updates/second)
  • Sampling Rate Note 1 S/s to 1 MS/s, software programmable
  • Series ID OM-USB-1208HS-Series
  • Slew Rate 6.7 V/µs
  • Storage Temperature, Max 85 °C
  • Storage Temperature, Min -40 °C
  • Supply Current Up to 500 mA
  • Supply Power Note Operating Modes: Bus-powered, USB 5V supply Supply Current: Total current consumption including 5V, and digital output and analog output currents Suspend Mode: : <2.5 mA , Enumeration: <100 mA, Run Mode: <500 mA Power Consumption Excluding Analog and Digital Outputs: Run Mode: 1.175 W maximum (235 mA input current) Power Available for 5V, AICKO, AOCKO, TMR, Analog Outputs, Digital I/O: Run Mode: 1.325 W maximum +5 V Output Voltage Range:Run Mode: 4.5V minimum, 5.25V maximum, Suspend Mode, Enumeration:0V +5V Output Current (Run Mode, No Other Output Loads): 265 mA maximum (1.325 W)
  • Supply Voltage 5 Vdc
  • Timer Output Timer Terminal Name: TMR;Timer Type: PWM output with count, period, delay, and pulse width registers;Output Value: Default state is idle low with pulses high, software selectable output invert;Internal Clock Frequency: 40 MHz;Register Widths: 32-bits;High Pulse Width: 20 ns minimum;Low Pulse Width: 20 ns minimum;Output High Voltage: 4.4V minimum(IOH = -50 µA), 3.76V minimum(IOH = -24 mA);Output Low Voltage: 0.1V maximum (IOL = 50 µA), 0.44V maximum (IOL = 24 mA);Output Current: ±24 mA maximum per pin
  • USB Cable Length 5 m
  • Voltage Measurement Range ±20V, ±10V, ±5V, ±2.5V, 0 to 10V, Single Ended, Differential
  • Weight 160 g
  • Width 89.9 mm

Supported Applications

The Omega OM-USB-1208HS Series comprises high-speed, multifunction USB data acquisition modules designed for use with Microsoft Windows operating systems (Vista/7/8/10 in 32-bit and 64-bit configurations). These standalone plug-and-play devices are intended for industrial data acquisition applications requiring voltage input monitoring. The series supports software programmable options including individual channel ranges, strip chart logging, oscilloscope viewing, rate generation, and function generation via the supplied TracerDAQ or optional TracerDAQ Pro software.

Operating Conditions & Performance

The modules operate within an ambient temperature range of 0 to 50°C (32 to 122°F) with a storage temperature range of -40 to 85°C (-40 to 185°F). Humidity ratings are specified as 0 to 90% RH non-condensing. The analog input section features a successive approximation A/D converter with 13-bit resolution and an input bandwidth typical of 2 MHz across all ranges. Sampling rates range from 1 S/s to 1 MS/s, software programmable in both Software-Paced (typical throughput 33 to 4000 S/s) and Hardware-Paced modes (maximum 1 MS/s). Absolute accuracy varies by voltage range; for example, the ±20V differential mode lists an absolute accuracy of ±9.55 typ, ±13.18 maximum LSB.

Configuration Options

The series includes three primary models: OM-USB-1208HS, OM-USB-1208HS-2AO, and OM-USB-1208HS-4AO. All units are USB bus-powered (5V from the USB port) with a maximum cable length of 5 m (16.4'). Key configurable capabilities include:

  • Analog Inputs: Eight single-ended or four differential channels, software-selectable per channel to ranges including ±20V, ±10V, ±5V, ±2.5V, and 0 to 10V.
  • Analog Outputs (Model Dependent): The OM-USB-1208HS-2AO provides two 12-bit analog output channels; the OM-USB-1208HS-4AO provides four 12-bit analog output channels. Output ranges include ±10V and uncalibrated ±10.2V.
  • Digital I/O: Sixteen individually configurable CMOS channels (input or output) with pull-up/pull-down resistor options.
  • Counters & Timers: Two 32-bit counter input channels for TTL pulses and one 32-bit timer output channel supporting PWM, count, period, delay, and pulse width registers.
  • Synchronization: External trigger inputs (edge or level-sensitive) and external clock I/O terminals (A/D Clock In/Out, D/A Clock In/Out).

The modules feature two banks of screw-terminal blocks for signal connections including analog input/output, digital I/O, counter/timer signals, and power outputs. Memory includes a 4 kS data FIFO and 32 KB non-volatile memory (16 KB firmware storage, 16 KB calibration/user data).

Key Product Differences

The series is differentiated by the presence and quantity of analog output channels:

  • OM-USB-1208HS: High-speed multifunction module with eight 13-bit, 1 MS/s analog inputs.
  • OM-USB-1208HS-2AO: Includes the base input features plus two 12-bit, 1 MS/s analog outputs.
  • OM-USB-1208HS-4AO: Includes the base input features plus four 12-bit, 1 MS/s analog outputs.

All models share identical physical dimensions of 127 L x 89.9 W x 35.6 mm H (5.00 x 3.53 x 1.40") and a weight of 160 g (5.6 oz). The series carries CE approval and is covered by a one-year warranty, with an optional OMEGACARE™ extended warranty available.

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