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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
8 Digital I/O Lines
Two 32-Bit Counter Input Channels
One Timer Output Channel
TracerDAQ® Software Included for Acquiring and Displaying Data and Generating Signals
Universal Library Includes Support for Visual Studio® and Visual Studio.NET, Including Examples for Visual C++®, Visual C#®, Visual Basic®, and Visual Basic® .NET
Comprehensive Drivers for DASYLab® and NI LabVIEW™
InstaCal Software Utility for Installing, Calibrating, and Testing
Supported Operating Systems: Windows® XP SP2 (32-bit only) and VISTA/7/8 (32-bit and 64-bit)
The OM-USB-1608G Series devices are low-cost, high-speed, analog
and digital I/O USB devices. All of these devices offer up to eight
differential (DIFF) or 16 single-ended (SE) analog inputs, up to eight digital
I/O channels, two counter inputs, and one timer output.
The OM-USB-1608GX-2AO offers two, 16-bit analog output channels
with DAC rates up to 500 kS/s. Everything you need to begin
acquiring, viewing, and storing data is included with each
OM-USB-1608G Series device, including comprehensive
software support.
Analog Input
OM-USB-1608G Series devices provide 16-bit analog inputs that
are software-selectable as 16 SE or eight DIFF inputs. These devices also
support input ranges of ±10V, ±5V, ±2V, and ±1V that are software-selectable
per channel
Analog Output
(OM-USB-1608GX-2AO only) The OM-USB-1608GX-2AO has two
16-bit analog outputs. Both outputs can be updated at a rate of 250 kS/s
per channel; one output can be updated at a rate of 500 kS/s. The
output range is fixed at ±10V. The outputs default to 0V when the host
PC is shut down or suspended, or when a reset command is issued to
the device.
Trigger Input
OM-USB-1608G Series devices have an external digital trigger input. The
trigger mode is software-selectable for edge- or level sensitive mode.
You can configure edge-sensitive mode for either rising or falling edge.
In level sensitive mode, you can configure for either high or low level.
The default setting at power up is edge-sensitive, rising edge.
Retrigger Mode:
In retrigger mode, you can set up repetitive analog
input trigger events. The trigger is automatically re-armed after it is
activated. Use software to set the A/D trigger count (the number of samples
you want per trigger).
Digital I/O
Eight bidirectional digital I/O connections are included with
OM-USB-1608G Series devices. Each digital channel is individually
configurable for input or output. The digital I/O terminals can detect the
state of any TTL-level input. You can configure for pull-up (+5V) or pulldown
(0V) through a jumper.
Counter Input
Each OM-USB-1608G Series device includes two 32-bit event counters
for counting TTL pulses. The counters accept frequency inputs of
up to 20 MHz.
Timer Output
OM-USB-1608G Series devices have a PWM timer output that
can generate a pulse output with a programmable frequency in the
range of 0.0149 Hz to 32 MHz. The timer output parameters are
software-selectable.
External Clock I/O
OM-USB-1608G Series devices provide one external clock input
and one external clock output for the analog inputs. The
OM-USB-1608GX-2AO also has one external clock input and
one external clock output for the analog outputs.
Software
The OM-USB-1608G modules ship with an impressive array of software,
including the new TracerDAQ®, a fullfeatured, 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 v8.5 through 2012) and InstaCalTM installation, calibration
and test utility-powerful solutions for programmers and nonprogrammers
alike. These modules operate under Microsoft Windows® XP (32-bit only) and VISTA/7/8 (32-bit and 64-bit) operating systems.
The OM-USB-1608G 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 and is available as a purchased upgrade
(SWD-TRACERDAQ-PRO). A comparison
of some of the features included in
TracerDAQ vs TracerDAQ PRO is
shown on the PDF.
Specifications Analog Input A/D Converter Type: Successive approximation ADC Resolution: 16-bits Number of Channels: 8 DIFF, 16 SE; software-selectable Input Voltage Range: ±10V, ±5V,
±2V, ±1V; software-selectable per channel Absolute Maximum Input Voltage CHx Relative to AGND: ±25V
maximum (power on); ±15V maximum (power off) Input Impedance: 1 GΩ (power on); 820 Ω (power off) Input Bias Current: ±10 nA Input Bandwidth
All Input Ranges, Small Signal (-3 dB) OM-USB-1608G: 750 kHz OM-USB-1608GX and OM-USB-1608GX-2AO: 870 kHz Input Capacitance: 60 pf Maximum Working Voltage (Signal + Common Mode):
±10.2 V maximum relative to AGND Common Mode Rejection Ratio fIN = 60 Hz,
All Input Ranges: 86 dB Crosstalk Adjacent Differential Mode Channels, DC to 100 kHz:
-75 dB Input Coupling: DC Sampling Rate (Software-Selectable) OM-USB-1608G: 0.0149 Hz to 250 kHz OM-USB-1608GX and OM-USB-1608GX-2AO:
0.0149 Hz to 500 kHz Trigger Source: TRIG (refer to External Trigger section) Sample Clock Source: Internal A/D clock or external A/D clock
(AICKI terminal) Burst Mode: Software-selectable using the internal A/D clock; always
enabled when using the external clock (AICKI terminal) OM-USB-1608G: 4 µs OM-USB-1608GX and OM-USB-1608GX-2AO: 2 µs Throughput Software Paced: 33 to 4000 S/s typical, system dependent Hardware Paced OM-USB-1608G: 250 kS/s maximum OM-USB-1608GX and OM-USB-1608GX-2AO:
500 kS/s maximum Channel Gain Queue: Up to 16 elements; software-selectable
range for each channel Warm-up Time: 15 minutes minimum
Analog Output
(OM-USB-1608GX-2AO only) Number of Channels: 2 (leave unused AOUTx output channels
disconnected) Resolution: 16-bits Output Range: ±10V (calibrated) Output Transient
Host computer is reset, powered on, suspended, or a reset
command is issued to the device. Duration: 500 µs Amplitude: 2V pk-pk Powered Off Duration: 10 ms Amplitude: 7V peak Differential Non-Linearity: ±0.25 LSB typ; ±1 LSB maximum Output Current AOUTx: ±3.5 mA maximum Output Short-Circuit Protection AOUTx Connected to AGND: Unlimited duration Output Coupling: DC Power On and Reset State DACs Cleared to Zero-Scale:
0V, ±50 mV (AOUTx defaults to 0V whenever the host computer
is reset, powered on, suspended, or a reset command
is issued to the device) Output Noise: 30 µVrms Sample Clock Source: Internal D/A
clock or external D/A clock (AOCKI terminal) Output Update Rate: 500 kHz/number of channels in scan Settling Time To Rated Accuracy, 10V Step: 40 µs Slew Rate: 9 V/µs Throughput Software Paced: 33 S/s to 4000 S/s typical, system-dependent Hardware Paced: 500 kS/s maximum, system-dependent
Analog Input/Output Calibration Recommended Warm-Up Time: 15 minutes minimum 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) Tempco: 5 ppm/°C maximum Long Term Stability: 15 ppm/1000 hours AOUTx Calibration Procedure (OM-USB-1608GX-2AO)
The analog output terminals are internally routed to the analog input
circuit. For best calibration results, disconnect any AOUTx connections
at the terminal block prior to performing AOUT calibration.
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
External Trigger Trigger Source: TRIG input Trigger Mode: Software configurable for edge or level
sensitive, rising or falling edge, high or low level. Power on default
is edge sensitive, rising edge. Trigger Latency: 1 µs + 1 clock cycle maximum Trigger Pulse Width: 100 ns minimum Input Type: Schmitt trigger, 33 Ω series resistor and 49.9 kΩ
pull-down to ground Schmitt Trigger Hysteresis: 0.4V to 1.2V Input High Voltage: 2.2V minimum, 5.5V absolute maximum Input Low Voltage: 1.5V maximum, -0.5V absolute minimum, 0V
recommended minimum
External Clock Input/Output Terminal Names OM-USB-1608G and OM-USB-1608GX: AICKI, AICKO, (OM-USB-1608GX-2AO): AOCKI, AOCKO Terminal Types AxCKI: Input, active on rising edge AxCKO: Output, power on default is 0V, active on rising edge Terminal Descriptions AxCKI: Receives sampling clock from external source AxCKO: Outputs the internal sampling clock (D/A or A/D clock) or the pulse generated from AxCKI when in external clock mode. Input Clock Rate OM-USB-1608G: 250 kHz maximum OM-USB-1608GX and OM-USB-1608GX-2AO: 500 kHz maximum Clock Pulse Width AxCKI: 400 ns minimum AxCKO: 400 ns minimum Input Type: Schmitt trigger, 33 Ω series resistor, 47 kΩ pull-down to ground Schmitt Trigger Hysteresis: 0.4V to 1.2V Input High Voltage: 2.2V minimum, 5.5V absolute maximum Input Low Voltage: 1.5V 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
Counter Terminal Names: CTR0, CTR1 Number of Channels: 2 channels Resolution: 32-bit Counter Type: Event counter Input Type: Schmitt trigger, 33 Ω
series resistor, 47 kΩ pull-down to ground Input Source: CTR0 (terminal 52) CTR1 (terminal 51) Counter Read/Writes Rates(Software-Paced):
33 to 8000 reads/writes per second typical,
system dependent Input High Voltage: 2.2V minimum, 5.5V maximum Input Low Voltage: 1.5V maximum, -0.5V minimum Schmitt Trigger Hysteresis: 0.4V minimum, 1.2V maximum Input Frequency: 20 MHz, maximum High Pulse Width: 25 ns, minimum Low Pulse Width: 25 ns, minimum
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: 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
Memory Data FIFO: 4 kS analog input/2 kS analog output Non-Volatile Memory: 32 KB (28 KB firmware storage, 4 KB
calibration/user data)
Power Supply Current
This is the total quiescent current requirement for the device that
includes up to 10 mA for the Status LED. This does not include any
potential loading of the digital I/O bits, +5V terminal, or the AOUTx
outputs (OM-USB-1608GX-2AO only)
Quiescent Current OM-USB-1608G and OM-USB-1608GX: 230 mA OM-USB-1608GX-2AO: 260 mA +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
Environmental Operating Temperature Range:
0 to 55°C (32 to 131°F) maximum Storage Temperature Range:
-40 to 85°C (-40 to 185°F) maximum Humidity: 0 to 90% RH non-condensing max
Mechanical Dimensions:
127 L × 89.9 W × 35.6 H mm (5.00 × 3.53 × 1.40") Weight: 160 g (0.35 lb) USB Cable: 3 m (9.84") maximum
† All amounts shown in EUR Note: Comes complete with a 1.8 m (6') USB cable, software and operator’s manual on CD.
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