Frequency Counter Module RF Signal Counter Cymometer 0.1MHz~2400MHz PLJ‑8LED‑H

Description

Frequency Counter Module RF Signal Counter Cymometer 0.1MHz~2400MHz PLJ‑8LED‑H
Feature:
1. The product is 2.4GHz frequency meter based on for Microchip's PIC16F648A
2. Frequency reference adopts temperature-compensated voltage-controlled crystal oscillator (2.5 ppm VC-TCXO)
3. Adopt unique gate control method and accurate time algorithm (non-timed interrupt mode)
4. Gate(display refresh) time allow 0.01 second/0.1 second/1.0 second optional, real-time display frequency value
5. Single-ended input design, frequency measurement with three channels(low channel/high channel/auto channel) optional
6. Dual intermediate frequency design, intermediate frequency value and plus/minus mode can be preset separately
7. Adopts eight-digit 0.56in high-brightness digital tube display, eight-level brightness is adjustable
8. Invalid zero automatic blanking, invalid frequency value display filter is optional, the last bit blanking is optional
9. Simple circuit with reasonable structure, double button control bring simple operation
10. Various settings are automatically saved and directly recalled after power‑on
Specification:
Item Type: Frequency Measurement Module
Material: PCB
Purpose: Mainly used to display the frequency value of transceivers and other equipment, and can also be used for routine frequency measurement
Gate Time: 0.01/0.10/1.0s
Measurement Channel (high and low channels are high impedance):
1. Low channel
Measuring Range: 0.1 MHz ~ 60 MHz
Measurement Accuracy: ± 100Hz (at 0.01 second gate)
±10Hz (at 0.1 second gate)
±1Hz (at 1.0 second gate)
Low Channel Sensitivity:
0.1 MHz ~ 10 MHz: Better than 60mVPP
10 MHz ~ 60 MHz: Better than 60mVPP
60 MHz ~ 75 MHz: Not tested
2. High channel (64 frequency division)
Measurement Range: 20 MHz~2.4 GHz
Measurement Accuracy: ±6400Hz (when the gate is 0.01 seconds)
±640Hz (at 0.1 second gate)
±64Hz (at 1.0 second gate)
High Channel Sensitivity:
20 MHz ~ 30 MHz: Better than 100mVPP
30 MHz ~ 60 MHz: Better than 50mVPP
60 MHz ~ 2.4GHz: Not tested
3. Automatic Channel: Automatically select high channel or low channel according to the input signal frequency, and the identification frequency is 60 MHz. If the input signal amplitude greater than 60 MHz is insufficient and the high channel cannot be automatically selected, the high channel frequency measurement should be selected manually.
Intermediate Frequency Setting: Independent dual intermediate frequency design, the minimum step of intermediate frequency adjustment is 100 Hz, the intermediate frequency range is 0 ~ 99.9999 MHz, and the mode of adding intermediate frequency or subtracting intermediate frequency can be set.
Frequency Reference: 13.000MHz temperature compensated voltage controlled crystal oscillator (VC-TCXO) in 5032 package, frequency stability is ±2.5 ppm
Working Voltage: DC Input: DC 9V~15V (with power supply polarity reverse protection)
Working Current: 160 mA maximum
Display Digits: Eight LED display, the highest display eight digits
Display Brightness: Eight-level LED brightness is adjustable, and the factory setting is the highest brightness
Onboard Interface:
DC IN (power interface): HX2.54-2P socket
RF IN (signal input): HX2.54-2P socket
ICSP (programming interface): 2.54-6P pin
Display Color: Red/green/blue
How to Use:
1. Please check the power supply voltage (DC8V-15V) and polarity before use, and then turn on the power supply after confirmation. The power supply circuit of this machine is connected with a diode, and the power supply polarity is reversed, the machine will not work, but it will not produce destructive consequences.
2. The measurement signal input 2P square socket is connected to the test line (wired method) or antenna (induction method).
3. Setting Function: IF value setting, plus and minus IF switching, LED brightness setting
3. Measuring Frequency: Use the test line to connect the RFIN (signal input) port to the local oscillator output of the transceiver or other test points, and the LED screen can display the frequency value of the test point in real time. The high-impedance input design of this module is beneficial to reduce the impact on the local oscillator circuit. The local oscillator output signal of the transceiver should have a certain strength (greater than 60mVpp). The oscillation of NEG02NE612 and the like is weak, and stable frequency values may not be read
Package List:
1 x Module
2 x Connection Line
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