Product Features Measures the frequency of an analog or digital signal Measures zero-centered signals with a minimum amplitude of 110mV peak-to-peak Measures logic-levels (3.3V and 5V) Connects directly to a computer's USB Port Product Description the 1054 - PhidgetFrequencyCounter is designed to count events from an analog signal over time and calculate a frequency from it. The product can count a logic level or signal centered around zero volts. Signals with a different ground can be counted, provided they are within the common mode range (+-10V). The Frequency Counter can also power small devices, such as Hall Effect, flow rate sensors, tachometers, and other sensors. The PhidgetFrequencyCounter contains two channels to sense two different inputs. Each channel has two different circuits to sense for logic level-frequencies or zero-centered frequencies. The measurable frequency is accurate to 0.25% up to 1MHz. The Frequency Counter may measure frequencies past 1 Mhz, but the input voltage specifications will not hold. The PhidgetFrequencyCounter can measure frequencies down to ~ 0.01Hz. However the response time of these measurements is directly related to the frequency, thus it could take 1 or 2 periods(100-200s) to detect the input frequency. Comes packaged with A 193018 - Mini-USB Cable 180cm A Hardware mounting kit (4 nuts and bolts, 4 plastic spacers) Resources Product Manual Mechanical Drawings Download 3D Step File Programming Resources Product Specifications Number of Channels 2 Operating Temperature 0 - 70°C USB Voltage Range 4.75 – 5.25VDC USB Current 42mA Max Output Current (using +5V from terminal block) 450mA Input Impedance 332 KOhm / 30pF Frequency Error 0.25% Maximum input frequency 1MHz Common Mode Input Range vs GND -6.25 – 10.25VDC Maximum Input Voltage (measured to ground) ±20V Zero Centered Input Hysteresis Band ±30mV Minimum Input Voltage @ 1mHz, Zero-Centered Input 400mVpp Logic Input, Logic Level 0 Voltage 0.8V Logic Input, Logic Level 1 Voltage 3V Code Samples For This Product C# (Windows) C/C++ (Linux/MacOS) C/C++ (Windows) Cocoa Flash AS3 Flex AS3 Java LabVIEW (64bit; Windows Only) LabVIEW (32bit; Windows/Mac OSX/Linux) Max/MSP (Mac OSX) Max/MSP (Windows) Python Visual Basic .NET Visual Basic 6.0
