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High Sensitivity 1Hz-50MHz Frequency Meter Counter Measurement Tester Module 7V-9V 50mA DIY Kit

High Sensitivity 1Hz-50MHz Frequency Meter Counter Measurement Tester Module 7V-9V 50mA DIY Kit

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  • China Warehouse
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Features:
Frequency range: 1Hz-50MHz(in fact, it can work up to 78MHz).
Four or five digits resolution(display for example, x.xxx KHz, x.xxx MHz, or xx.xx MHz).
Automatic range switching with different gate times.
Programmable addition or subtraction of the frequency offset.
Input impedance: 1.1M, in parallel with about 10pF.
Input sensitivity: tipcally 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 9V input.
Optional(configurable) power-saving mode which automatically turns the display off if the frequency didn't change significantly within 15s.

Specifications:
Type: Assembled Tester / DIY Kit(Optional)
Frequency Range: 1Hz-50MHz
Input Impedance: 1.1M, in parallel with about 10pF
Resolution: Max. 1Hz
Current Consumption: 50mA with 7 to 9V Input
Input Socket: BNC
Display: LED Digital Display
PCB Size: 79 * 62mm / 3.1 * 2.44in
Product Weight: 60g / 2.11oz
Package Weight: 61-65g / 2.16-2.28oz

Package List:
1 * Frequency Meter

Bill Of Materials 
*Resistors(0.25W, 1%)
8    R1-R8           1k                                                
2    R9, R15         10k                                               
1    R10             100k                                              
1    R11             1M                                                
1    R12             220                                               
1    R13             56k      * According to the different batches of C3355, the resistance may change                                       
1    R14             470      
*Capacitors                 
1    C1              470n     Polypropylene                                          
1    C2              100p     Ceramic                                          
2    C3 C5           100n     Polypropylene                                             
1    C4              47u      Electrolytic                                          
2    C6, C8          10u      Electrolytic                                           
1    C7              6-40p    Variable                                          
2    C14, C15        22p      Ceramic
*Integrated Circuits
1    U1              PIC16F628A (Programmed) + 18pin IC socket                                      
1    U2              LM1117-5V  SMD
*Transistors
1    Q1              C945                                              
1    Q2              J310                                              
1    Q3              C3355 
*Diodes   
6    D1-D6           1N4148                                              
1    D7              1N5819 
*Miscellaneous
1    J1              16Pin SIL Socket & header                                        
1    J2              BNC Socket                                             
1    J3              DC_CZ_ZM   DC adapter socket                                        
1    SW1             AN_SW   Push button switch                                           
1    SW2             SW2X2   Push button switch                                          
1    X1              Crystal 20MHz
2    SG1-SG2         Red 2digit common cathode 7-segment display 
1    SG3             Red 1digit common cathode 7-segment display 
1    Main PCB 
1    Display PCB
2    Copper Pillar +Screw +Spring Washer 


Assembly Diagram:
https://www.dropbox.com/s/0yjnpjtfp7htck2/Aassembly%20diagram%20for%20E1822.pdf?dl=0

Bill of Materials:
https://www.dropbox.com/s/o5g7abvwuk7fswp/Bill%20of%20materials%20for%20E1822.pdf?dl=0

User Manual:
https://www.dropbox.com/s/nrpzdw4nzp5n5cx/The%20main%20features%20of%20E1822.pdf?dl=0

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Customer Reviews

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  • By f***1

    October 22, 2017

    Exactly as described. Tested and working.

    Is this helpful? (0) (0)

  • By p***a

    May 10, 2017

    Item is here. Quickly and good. Thank you.

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  • By m***l

    April 27, 2017

    On time, as described, good price = excellent!

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  • By k***m

    April 11, 2017

    Thanks!

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  • By k***c

    April 7, 2017

    Arrived as described and in excellent packaging. No broken pieces.

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