Besplatna standardna dostava za narudžbe iznad $9.9
Pravila povrata
Povrat robe bit će prihvaćen u roku od 40 dana od datuma primitka robe. Prilagođeni artikli ne mogu se vratiti ili zamijeniti. Artikli kupljeni s e-poklon karticom mogu se samo zamijeniti; povrat novca nije primjenjiv.
Besplatan dar
Dobrodošli u Roymall, vašu profesionalnu web stranicu za kupovinu vrhunskih darova iz robnih kuća. Visoko cijenimo i cijenimo vašu podršku i želimo vam zahvaliti dodajući dodatnu dozu uzbuđenja vašim kupovinama. Kada kupujete kod nas, ne samo da ćete uživati u visokokvalitetnim proizvodima koji poboljšavaju vaš životni stil, već ćete također dobiti ekskluzivni besplatni dar uz svaku narudžbu koju izvršite. Spremni istražiti našu kolekciju i pronaći savršene darove? Pregledajte naš izbor vrhunskih artikala iz robnih kuća, izvršite narudžbu i radujte se uzbuđenju kada vaš besplatni dar stigne zajedno s vašom kupovinom.
Pravila dostave
Trudit ćemo se dostaviti artikle nakon što primimo vaše narudžbe i osigurati da stignu sigurno. Detalji o dostavi bit će navedeni u vašoj potvrdnoj e-pošti.U većini slučajeva narudžbe se obrađuju u roku od 2 dana.U posebnim okolnostima, bit će odgođeno kako slijedi: Kada naručite subotom, nedjeljom ili praznicima, bit će odgođeno za 2 dana..Obično je potrebno 5-7 radnih dana (od ponedjeljka do petka) bez utjecaja kašnjenja leta ili drugih okolišnih čimbenika..Budući da je naša usluga dostave širom svijeta, vrijeme dostave ovisit će o vašoj lokaciji, pa možda trebate malo pričekati ako se nalazite u udaljenim područjima ili zemljama.
1. Pravila povrata i zamjene
Prihvaćamo samo artikle kupljene s roymall.com. Ako kupujete od naših lokalnih distributera ili drugih trgovaca, ne možete ih vratiti na našoj strani.Artikli na kraju prodaje ili besplatni darovi nisu prihvatljivi za povrat.Da biste ispunili uvjete za povrat, vaš artikl mora biti neiskorišten i u istom stanju u kojem ste ga primili. Također mora biti u originalnom pakiranju.Nakon što od nas primite upute za povrat, pakirajte svoje vraćene artikle i ostavite paket u lokalnoj pošti ili drugom kuriru. Obradit ćemo vaš povrat ili zamjenu artikla unutar 3-5 radnih dana nakon što ga primimo. Povrat novca bit će obrađen i automatski vraćen na vaš izvorni način plaćanja.Ne mogu se prihvatiti povrati ili zamjene ako je proizvod prilagođen, uključujući prilagođenu veličinu, boju ili ispis.Treba li vam dodatna pomoć, kontaktirajte nas. service@roymall.com ili Whatsapp: +447549870296
2.Pravila povrata novca
Dobit ćete potpuni povrat novca ili 100% kredita u trgovini nakon što primimo vraćeni paket i provjerimo ga. Povrat novca bit će obrađen i automatski vraćen na vaš izvorni način plaćanja.Imajte na umu da troškovi dostave i bilo kakve carine ili naknade nisu povratni. Dodatni troškovi dostave ne podliježu povratu nakon što je paket poslan. Odgovorni ste za plaćanje tih naknada i ne možemo ih odbiti ili vratiti, čak i ako se narudžba vrati nama. Nakon što primimo i potvrdimo vaš vraćeni artikl, poslat ćemo vam e-poštu kako bismo vas obavijestili da smo primili vaš vraćeni artikl. Također ćemo vas obavijestiti o odobrenju ili odbijanju vašeg povrata novca.Ako imate bilo kakvih problema u vezi s procesom povrata novca, kontaktirajte nas. service@roymall.com ili Whatsapp: +447549870296
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Description:
FY3224S 24MHz Dual-channel Arbitrary Waveform DDS Function Signal Generator Sine Square Wave Sweep Counter
Features:
Output signal frequency high accuracy, good stability. Signal amplitude up to 20Vpp. Instrument can realize the adjustment program of function parameters , easy to use. Accompanying frequency meter, counter function, high cost. The instrument can output sine, square, triangle, ramp, pulse, staircase, DC voltage waveform. Pulse wave pulse width precision can be adjustable.
Function:
1. Using DDS direct digital synthesis technology to generate precise, stable, low distortion output signal. 2. CH1 and CH2 completely symmetrical two channels, each channel can be independently set the parameters. 3. Supports user-defined waveforms, each arbitrary waveform memory depth 2048 x 12bits, 250MSa / s sampling rate. 4. Has burst burst output, selectable manual trigger, internal and external trigger CH2 trigger three trigger modes that allow the unit to any output 1 - 1048575 bursts. 5. Measurement functions: instrument comes with 100MHz frequency counter functions and pulse counter functions. 6. Waveform generator up to 12 bits wide, the output waveform is more delicate, waveform distortion is reduced magnitude. 7. With full CNC functions, display and digital adjustment phase current amplitude of the output signal, offset, frequency, duty cycle, and the two signals. 8. After connecting the instrument to the computer, you can use the computer through the PC control signal generator functions and parameters, and can be edited on a computer to download arbitrary waveform output waveform to the instrument.
9. Communication: serial communication, protocol completely open, user-friendly secondary development. 10. High frequency accuracy: frequency accuracy up to 10-6 magnitude. 11. High frequency resolution: the full range of frequency resolution 10mHz. 12. Tracking function: built-in frequency, amplitude, offset, duty cycle, waveform and other parameters follow function, easy to use. 13. Scanning features: a frequency linear sweep and logarithmic sweep function, scan start and end points can be set. 14. Storage feature: You can store 20 groups instrument state parameters set by the user, can be called up to Reproduce 15. Operation: key operation, LCD1602 LCD display in English, direct digital setting parameters or continuous adjustment knob. 16. Input voltage protection: extended power input range AC85V to AC240V wide voltage. 17. Output short circuit protection: All signal outputs can operate at over load short circuit 60S.
Technical Parameters: Built-in switching power supply: AC85V-AC260V Interface: USB
Signal output: Output amplitude: ≥≥20Vp-p (no load) Output Impedance: 50Ω ± 10% DC polarization: ± 10V Frequency range: 0Hz - 24MHz (orther 0Hz - 6MHz)
Scan function: Scanning mode: Linear sweep, logarithm scanning Frequency Range: Start and end points set arbitrary Frequency scanning range: M1 - M2 predetermined frequency Scan rate: 1s ~ 999s / step
Other: Storage and transferred functions: M0 - M9 (M0: default) Size: 200mm (L) x 190mm(W) x 90mm(H) Beeper function: to set open or closed by the program Operating characteristics: All key operation, continuous adjustment knob Environmental conditions: Temperature 0 - 40 ℃ humidity <80%
Good news:
The unit is working. Controls is rather friendly and intuitive clear. FW ver.4.1. On the whole it conforms to the description.
Bad news:
- Bad packing, inappropriate for post delivery. The unit box looks as if elephants have danced on it.
- Mains cable is with crappy chinese plug, not European standard. No adaptor even included.
- Switching power supply is a total crap. You have to replace it with a classic linear one.
- Dangerous high voltage leakage from PS. The voltage between generator’s ground parts of all BNC and mains earth (or other laboratory equipment ) is 100VAC. You may easy get an electric shock and fry delicate equipment and microchips.
- Sin wave has glitches at the zero crossing point and half way long
- At 20VAC output waveforms are intact below 5MHz, at higher frequencies waveforms are significantly corrupted
- At 24MHz the amplitude significantly decreases
- You can get usable waveforms only below 5Mhz and below 10VAC of output
Conclusion:
A good generator for testing audio and some TV equipment, not suitable for ham radio.
I bought this unit to replace an earlier model. This model has remote facilities which I wanted to use for automatic testing.
These are the problems:
1) The upper frequency limit is 24MHz but you cannot set the frequency directly to more than 9.999999 using the <> buttons and the dial. You have to go to the units MHZ position and just keep turning and you will go over 10MHz. When you do this the 0.01KHz position disappears too. - see photos
2) Related to 1) the display software has a bug in it. If you program 10MHz the last digit (0.01KHz) disappears. You can still set the lowest digit but it does not show. Sometimes you also get the display 999.9999kHzz - clearly a problem. The good news is the actual output seems to be ok.
3) The included disk includes the Host Communication Protocol V1.2 document. Either this is an earlier document or it is incomplete. as:
a) There is no command to set the frequency above 9.99999999. The command size limit for the frequency is 9 characters which means you cannot enter 10MHz or more using the serial command.
b) The specification says that there is are four downloadable 2048 point waveforms. The serial specification does not include the protocol to do this. This is a feature I wanted for my project.
4) The included software is all in Chinese and is useless.
If you only want to use this unit standalone then it is excellent value for money. If you really need to drive this unit using the serial interface then the information is incomplete.