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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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  • Full or Partial Refund , If the item is not as described Learn More >
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

Customer Questions & Answers

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0 votes
Q

Does anybody know how to activate the low order digit? It's blank right now.

A
  • You might have made a construction error, but more likely this is normal behavior. It should come on over 10kHz. The kit is based on an original design that is documented here: www.qsl.net/dl4yhf/freq_counter/freq_counter.html. It is well worth reading.

    By Charlotte Clark on March 16, 2018

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Customer Reviews

Average Rating:

4.4

based on 24 Customer Reviews

  • 5 stars
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  • 4 stars
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  • By f***c

    April 14, 2018

    Good seller, five stars, thank you

    Is this helpful? (0) (0)

  • By m***l

    February 8, 2018

    Alles bestens. Funktioniert sehr gut. Gern wieder.

    Is this helpful? (0) (0)

  • By n***d

    February 3, 2018

    Alles bestens, vielen Dank.

    Is this helpful? (0) (0)

  • By K***F

    February 3, 2018

    Alles bestens, gerne wieder, danke

    Is this helpful? (0) (0)

  • By w***r

    January 10, 2018

    Habe den Zähler aufgebaut, funktioniert einwandfrei. Vielen Dank!

    Is this helpful? (0) (0)

  • By v***s

    December 29, 2017

    excellent seller quality kit at agreat price

    Is this helpful? (0) (0)

  • By f***e

    December 27, 2017

    Objet impeccablement emballé et conforme à sa description.

    Is this helpful? (0) (0)

  • By s***m

    December 22, 2017

    item as described, great shipping, well packaged, 10/10 would buy from again!

    Is this helpful? (0) (0)

  • By e***m

    December 20, 2017

    Recebi encomenda tudo OK.

    Is this helpful? (0) (0)

  • By b***s

    December 8, 2017

    Can test all those EMF's buzzing round now... Muah Hahahahahahah!!!!

    Is this helpful? (0) (0)

  • By m***e

    December 7, 2017

    Schneller als Schnell geliefert - gerne wieder

    Is this helpful? (0) (0)

  • By b***h

    November 29, 2017

    I received the Frequency Counter modules today/Good price/Thank you for them!

    Is this helpful? (0) (0)

  • By Lancia Carlo

    November 8, 2017

    bellissimo e funzionale strumento. molto sensibile, non carica per nulla il circuito in prova. usare sonda 10x. l'ingresso dell'alimentazione è un jack 3,5, meglio se fosse stato da 5 per uniformarlo ad altri strumenti. considerando che spesso va montato in un contenitore, meglio se il tasto syncro fosse stato ripetibile all'esterno tramite due pin saldati in parallelo

    Is this helpful? (0) (0)

  • By Andrea

    November 7, 2017

    I componenti sono di buona qualità' e le istruzioni sufficienti. La realizzazione richiede un'oretta per le saldature/assemblaggio e.... funziona veramente bene.Grazie

    Is this helpful? (0) (0)

  • By Garzoni Tiziano

    August 8, 2017

    ottimo apparecchio inserito all'interno di un generatore di segnali fornisce l'esatta frequenza, facilissimo da montare. i led non ballano nella visualizzazione segno di un circuito molto stabile e ben progettato. Complimenti

    Is this helpful? (0) (0)

  • By o***r

    July 2, 2017

    Excellent Transaction Works GREAT Very accurate FASTshipping was appreciated

    Is this helpful? (0) (0)

  • By p***a

    May 10, 2017

    Item is here. Quickly and good. Thank you.

    Is this helpful? (0) (0)

  • By m***l

    April 27, 2017

    On time, as described, good price = excellent!

    Is this helpful? (0) (0)

  • By k***c

    April 7, 2017

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

    Is this helpful? (0) (0)

  • By Leonardo Bezzi

    March 9, 2017

    Non sarà professionalissimo dato la limitazione del numero dei display, ma è molto preciso anche con segnali di ingresso debolissimi. Rapporto qualità/prezzo eccellente

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