ماژول فرکانس متر دیجیتال 8 بیتی با قابلیت سنجش دو محدوده فرکانسی

Description:
Using Microchip's PIC16F648A, 2.4 GHz frequency meter.
Use temperature compensated voltage controlled crystal oscillator (2.5 ppm VC-TCXO).
Unique gate control and precise time algorithm (non-timed interrupt).
The door (display refresh) time is 0.01 second / 0.1 second / 1.0 second, and the frequency value is displayed in real time.
Single-ended input design, three-channel frequency measurement (low channel / high channel / automatic channel).
Dual frequency design, the value and mid-frequency/down mode can be preset separately.
Use eight 0.56 inches high brightness digital display, eight adjustable brightness.
The circuit structure is simple and reasonable, double button control, simple operation.
Settings are automatically saved and direct calls are directed.

Application:
experiment
industry
school
electronic DIY

Features:
1 door time
0.01 second
0.10 second
1.0 second
2 measurement channels (channels are low impedance)
Low channel
measurement range: 0.1 MHz to 60 MHz
accuracy: ±100Hz (0.01 second gate time)
±10Hz (0.1 second gate)
±1Hz (1.0 second gate time)
Low channel sensitivity:
0.1 MHz~10 MHz: better than 60mVPP
10 MHz~60 MHz: better than 60mVPP
high channel (divided by 64)
measurement range: 20 MHz~2.4 GHz
accuracy: ±6400Hz ( 0.01 second gate)
±640Hz (0.1 1s gate time)
±64Hz (1.0ss gate time)
High channel sensitivity:
20 MHz? 30 MHz: better than 100mVPP
30 MHz? 60 MHz: better than 50mVPP
60 MHz? 2.4GHz: not tested
Automatic channel automatically selects the high or low channel according to the input signal frequency to identify the frequency Is 60 MHz. If the input signal amplitude is greater than 60MHz, the high channel cannot be automatically selected for short-circuit, and the channel should be manually selected for high frequency measurement.
IF setting independent dual intermediate frequency design, adjust the minimum frequency step of 100 Hz, the frequency range is 0 to 99.9999 MHz, and the mode of increasing or decreasing the intermediate frequency can be set.
The frequency reference adopts a 5032 package 13.000MHz temperature-controlled voltage crystal oscillator (VC-TCXO), and the frequency stability is ±2.5 ppm.
Working voltage:
DC input: DC 9V~15V (with reverse polarity protection)
The maximum current is 160 mA (test conditions: ①DC12V power supply; ②red LED; ③eight brightness)
Eight 8-digit LED display, the highest Display 8 digits.
The brightness of eight LEDs is adjustable, and the factory setting is the maximum brightness.
Physical size, length × width × height: 125.5mm × 25.5mm × 21.5mm
Mass of component 46 g (NW)
On-board interface
DC IN (power interface): HX2.54-2P socket
RF IN ( Signal input): HX2.54-2P socket
ICSP (programming interface): 2.54-6P pin