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Upgraded 1Hz-75MHz Frequency Counter 7V-9V 50mA Cymometer Module Tester Meter Easy Assemble Quality PCB-made Durable-
Sold by MENGYISHANGMAOHUWAI
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Est. delivery by May 15 - May 18
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Product description
Upgraded 1Hz-75MHz Frequency Counter 7V-9V 50mA Cymometer Module Tester Meter Easy Assemble Quality PCB-made Durable-
Features:
Frequency range: 1Hz-75MHz (in fact, it can work up to 78MHz).
Four-digit or five-digit display resolution (for example, x.KHz xxx, x.xxx.MHz, or xx.xxMHz).
Automatic switching range with different gate times.
addition or subtraction of programmable frequency offset.
Input impedance: 1.1 for M, parallel to about 10pF.
Input sensitivity: Typically less than 20mV RMS from 1Hz-100KHz, rising to 35mV at 20MHz and 75mV at 50MHz (150mV at 78MHz).
Current consumption: 50mA with 7 to 9 V input.
Optional (configurable) power-saving mode that automatically shuts off the display if the frequency does not change significantly within 15 s.
Specifications:
Type: DIY Kit
Frequency Range: 1Hz-75MHz
50MHz Input Impedance: 1.1M, Parallel with about 10PF
Resolution: Max. 1Hz
Current Consumption: 50mA with 7 to 9V Input
Socket of Input: BNC
Display: Digital LED Display
PCB Size: 80x58mm/3.15x2.28"
Quantity: 1 Set
Note:
Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!
No Retail Package
Package Contents:
1 Set x Frequency Meter DIY Kit
List Of Materials:
Resistors (0.25 for W , 1%):
8 x R1-R8 1 k
2 x R9, R15 10 k
1 x R10 100 k
1 x R11 1 for M
1 x R12 220
1 x R13 56 k * according to the different batches of C3355, the resistance can change
1 x R14 470
Capacitors:
1 x C1 470n Polypropylene
1 x C2 100 p Ceramics
2 x C3 C5 100n Polypropylene
1 x C4 47u Electrolytic
2 x C6, C8 10u Electrolytic
1 x C7 6-40 p Variable
2 x C14, C15 22 p Ceramic
Integrated Circuits:
1 x U1 PIC16F628A (Programmed) + 18pin IC socket
1 x LM1117-5V SMD
Transistors
1 x Q1 C945
1 x Q2 J310
1 x Q3 C3355
Diodes:
6 x D1-D6 1N4148
1 x D7 1N5819
Various:
1 x J1 SIL Socket & header 16Pin
1 x J2 BNC socket
1 x J3 DC_CZ_ZM socket adapter DC
1 x switch button SW1 AN_SW
1 x switch button SW2 SW2X2
1 x 1 Crystal 20 MHz
2 x SG1 7-segment 2-digit display common cathode
1 x SG3 7-segment 1-digit display common cathode
1 x PCB Main
1 x PCB display
2 x Copper pillar + + Spring screw Washer
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