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- ºê·£µå À̸§: XMSJ
- ±Ù¿ø: CN (Á¤Ç°)
Specifications: Phase and Duty Cycle Measurement Instrument User Manual HF280 1. Overview: HF280 is a multi-function instrument for frequency, phase and duty cycle measurement, and also adds ambient temperature measurement. The instrument completes the operation through the button, and has the advantages of simple structure, convenient use, stable performance, reliability, high sensitivity and fast measurement speed. 2. Application: ¡Ü Frequency measurement; ¡Ü Phase measurement; ¡Ü Duty cycle measurement; ¡Ü Ambient temperature measurement;
3. Technical parameter table: serial number item parameter unit remarks 1 Measurement frequency range 1~500K HZ 2 Measurement frequency resolution 0.01 HZ 3 Measurement duty cycle range 0.0~100.0 % Rectangular wave duty cycle 4 Measurement duty cycle resolution 0.1 % 5 Measurement phase range 0.0~360.0 degrees 6 Measurement phase resolution 0.1 degrees 7 Signal input voltage range ±0.7~10 VDC is direct coupling 8 Temperature measurement range -50~+100 degrees 9 Temperature measurement resolution 0.1 degrees 10 Operating voltage 7~ 12 VDC 11 Operating current <50 mA 12 Operating temperature -40¡É¢¦65¡É Celsius 13 Storage temperature -40¡É¢¦65¡É Celsius 14 Dimensions 55*45*10 mm LXWXH
4. Interface display and operation description: (1) Button description: MODE: set interface; SEL: select measurement frequency; 4.1. Display measurement frequency and duty cycle (F1 interface input signal) Interface display font: the first line "1" . 1Hz->2K DUTY " 2nd line" 100.0Hz 50.6%" key operation: SEL key; (select different measurement frequency range) 4.2. Display measurement frequency and phase (input signal 1 of F1 interface, input signal 2 of F2 interface) interface display font: the first line "2. 1Hz->2K PHASE " the second line" 100.0Hz 270.6C" key operation: SEL key ; (Select different measurement frequency range) Note: Detect the phase difference between the F1 interface signal and the F2 interface signal. (The two measured signals should have the same frequency). 4.3. Display the font on the display ambient temperature interface: the first line" 3. Temperature " the second line" 29.4 C' " Note: measure the ambient temperature -50¢¦+180 degrees 5. Wiring definition of P1 wiring: the meaning of the serial number symbol 1 VDD module Positive pole of power supply (7V~12V) 2 GND Negative pole of power supply of module P2 wiring definition: serial number symbol meaning 1 F1 Measurement frequency input terminal 1 2 F2 Measurement frequency input terminal 2 3 GND Negative power supply Note: (1) When measuring the duty cycle of the signal, the input signal of the F1 interface is measured. (2) When measuring the signal phase, the F1 interface inputs the measurement signal 1, the F2 interface inputs the measurement signal 2, and detects the phase difference between the F1 and F2 signals. (with F1 as the reference signal is 0 degrees Note: The display is backlit, standard LCD1602 interface.
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