아날로그 신호 주파수 카운터
(PhidgetFrequencyCounter)
개요
- 본 제품은 아날로그 신호에서 들어오는 이벤트를 카운트하여 주파수를 계산하여 줄 수 있게 디자인된 제품입니다.
- 로직 레벨이나 0볼트 부근의 신호를 카운트할 수 있으며, 그라운드가 다른 신호도 카운트가 가능합니다
- USB를 통해 각 채널의 주파수를 카운트할 수 있습니다.
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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.
특징
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Board
API Object Name FrequencyCounter Number of Channels 2 Frequency Error Max 0.25 % Input Frequency Max 1 MHz Frequency Input Voltage Max ± 20 V DC Amplitude Min (Zero-Centered Input) 110 mV DC Hysteresis (Zero-Centered Input) ± 30 mV DC Ground Offset Min -6.3 V DC Ground Offset Max 10.3 V DC Low Voltage Max (False) 800 mV DC High Voltage Min (True) 3 V DC
Electrical Properties
USB Voltage Min 4.8 V DC USB Voltage Max 5.3 V DC USB Speed Full Speed Current Consumption Max 42 mA Available External Current 450 mA Input Impedance (30pF) 332 kΩ
Physical Properties
Recommended Wire Size 16 - 26 AWG Operating Temperature Min 0 °C Operating Temperature Max 70 °C -
Comes Packaged with
- A 3018 - Mini-USB Cable 180cm
- A Hardware mounting kit (4 nuts and bolts (M3), 4 plastic spacers)
문서
- User Guide
- Mechanical Drawings
- Download 3D Step File
- Programming Resources
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Code Samples For This Product