MCC USB-CTR04 Counter / Timer USB Device
MCC USB-CTR04
High-speed, 4 channel, counter/timer device with 8 digital I/O
The Measurement Computing USB-CTR04 is a USB-based,
high-speed counter/timer device and features four counter inputs, 48 MHz input
frequency, up to 64-bit resolution, up to 8 MB/s scan rates, multiple counter
modes, four pulse-width modulation (PWM) timers, and eight digital I/O. This
device is USB-powered and requires no external power.
The USB-CTR04 device provides high-speed counter/timer
operations synchronized with digital I/O functions. The four-channel USB-CTR04
features high frequency and scan rates, debounce filtering, support for
multiple counting modes, and software-selectable resolution up to 64 bits. The
device also provides eight individually-configurable digital I/O channels.
USB-CTR04 supports an aggregate throughput rate of 8 MB/s.
The device can be configured for any resolution up to 64-bits, eliminating the
need to cascade counters. The following data streaming rates for these common
resolution settings are supported; 16-bit: 4 MS/s, 32-bit: 2 MS/s, 64-bit: 1
MS/s. Each counter channel has a connection point for counter input, counter
output, and counter gate.
Counter inputs can be read asynchronously under program
control, or synchronously with digital inputs as part of a digital scan group.
In both cases, counters can be configured to function in one of the following
ways; counter resets to 0 after each read, counter counts up or down and then
rolls over at a user-set limit, and counter counts until the user-set limit has
been reached. Counter inputs can concurrently monitor time periods,
frequencies, pulses, and other event-driven incremental occurrences directly
from pulse-generators, limit switches, proximity switches, and magnetic
pick-ups.
Counter gates use input signals to clear a counter, change
counter direction, or start/stop counting. Gate options are
software-selectable.
Counter outputs can be used to control or transmit signals
to external devices, and also to counter inputs, counter gates, or digital
inputs.
The USB-CTR04 supports the following counter input modes;
totalize mode (event counter), period measurement mode, pulse-width measurement
mode, and timing measurement mode. Counter input modes are software-selectable.
Some modes include the max limit and the min limit register values, which do
not directly affect the current count, but set limits in some modes to
determine counter behavior.
In period measurement mode, the device measures the period
of any signal at a counter input (CxIN). The device counts the integral number
of ticks that make up the period, and the data returned is always time measured
in ticks. The measurement period is the time from edge-to-edge, either both
rising or both falling. Period data is latched as it becomes available and is
acquired at the counter read rate. The data returned is interpreted as time
measured in ticks. This data represents the number of tick size intervals
counted during the period measurement.
In pulse width measurement mode, the device measures the
time from the rising edge to the falling edge, or vice versa, on a counter
input signal (CxIN). The measurement is either pulse width low or pulse width
high, depending upon the edge detection setting. Every time the pulse width
measurement is latched from the counter, the counter is immediately cleared and
enabled to count the time for the next pulse width. The pulse width
measurements are latched as they become available. The data returned is
interpreted as time measured in ticks. This data represents the number of tick
size intervals counted during the pulse width measurement.
In timing mode, the device measures the time between an
event on the counter input (CxIN) and a subsequent event on the counter gate
(CxGT), such as the rising or falling edge of one event with respect to the
rising or falling edge of another event (based on the edge detection setting).
The USB-CTR04 has debounce circuitry which eliminates
switch-induced transients that are typically associated with electromechanical
devices including relays, proximity switches, and encoders. All debounce filter
options are software selectable. You can select a debounce time, debounce mode,
and rising-edge or falling-edge sensitivity. Each channel can be debounced with
16 programmable debounce times in the range of 500 ns to 25.5 ms. The signal
from the buffer can be inverted before it enters the debounce circuitry. The
inverter is used to make the input rising edge or falling-edge sensitive.
The USB-CTR04 has eight digital I/O lines. The digital I/O
connectors can detect the state of any TTL-level input.
The USB-CTR04 includes four 32-bit timer outputs. Each timer
can generate a programmable width pulse with a software selectable frequency in
the range of 0.02235 Hz to 48 MHz. At higher frequencies, the timer output
frequency and duty cycle depend on the load impedance and the supply. The timer
output rate and pulse width can be updated asynchronously at any time; however,
doing so results in a pulse stream that is not seamless.
Users can pace synchronous acquisition of counter data by
the onboard clock or by an external clock connected to the external clock input
connector.
Software support includes DAQami, an out-of-the-box
application for data logging, visualization, and signal generation. Data can be
viewed in real-time or post-acquisition on user-configurable displays. Drivers
are included for the most popular applications and programming languages
including Visual C++®, Visual C#®, Visual Basic®.NET, DASYLab®, LabVIEW™, and
Python™.
Features
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Prioritizing on ease of use and flexibility, MCC offers out-of-the-box software plus drivers for the most popular programming languages and applications.
Out-of-the-box software includes DAQami for data logging, visualization, and signal generation. For a more full-featured and customizable experience, DASYLab® provides real-time analysis and control, plus the ability to create custom applications without programming.
DASYLab can be purchased directly from MCC.
For maximum customization, drivers are included for Visual C++®, Visual C#®, Visual Basic®.NET, LabVIEW™, MATLAB®, Linux®, and Python™.
Out of the Box Software: DAQami -Included
Data Acquisition Companion Software for Acquiring Data and Generating Signals
DAQami is an out-of-the-box application for data logging, visualization, and signal generation. Data can be viewed in real-time or post-acquisition on user-configurable displays. DAQami is ideal for interactive testing, data logging, and developing applications that run for minutes or days.
Supported Operating Systems: Windows®11/10/8/7/Vista®, 32-bit or 64-bit
English, Chinese, and German language support.
Programming and Driver Support -Included
MCC programming and driver support is extensive and features comprehensive libraries and example programs for the most popular applications and programming languages including Visual C++®, Visual C#®, Visual Basic®.NET, LabVIEW™, MATLAB®, Linux®, and Python™.