Returneringer accepteres inden for 40 dage fra modtagelsesdatoen. Tilpassede varer kan ikke returneres eller ombyttes. Varer købt med en e-gavekort kan kun ombyttes; refusion er ikke mulig.
Gratis Gave
Velkommen til Roymall, din professionelle hjemmeside til køb af premium stormagasinsgaver. Vi værdsætter og sætter pris på din support, og vi vil gerne vise vores taknemmelighed ved at tilføje en ekstra glæde til dine køb. Når du shopper hos os, får du ikke kun høj kvalitetsprodukter der forbedrer din livsstil, men du vil også modtage en eksklusiv gratis gave med hver ordre du placerer. Klar til at udforske vores samling og finde dine perfekte gaver? Gennemse vores udvalg af premium stormagasinsvarer, placer din ordre, og se frem til glæden ved at modtage din gratis gave sammen med dit køb.
Forsendelsespolitik
Vi vil arbejde hårdt for at levere varer til dig efter modtagelse af dine ordrer og sikre at de ankommer sikkert. Forsendelsesdetaljer vil blive givet i din bekræftelsesemail.I de fleste tilfælde behandles ordrer inden for 2 dage.Under særlige omstændigheder vil det blive forsinket som følger: Når du placerer en ordre på lørdag, søndag eller helligdage, vil det blive forsinket med 2 dage.Normalt tager det 5-7 arbejdsdage (mandag til fredag) uden at blive påvirket af flyforsinkelser eller andre miljøfaktorer.Fordi vores forsendelsesservice er verdensomspændende, vil leveringstiderne afhænge af din placering, så det kan tage lidt tid og vær venlig at vente tålmodigt hvis du er i fjerntliggende distrikter eller lande.
1. Returnering & Ombytning Politik
Vi accepterer kun varer købt fra roymall.com. Hvis du køber fra vores lokale distributører eller andre forhandlere, kan du ikke returnere dem hos os.Endelige salgsvarer eller gratis gaver accepteres ikke til returnering.For at være berettiget til en returnering, skal din vare være ubrugt og i samme stand som da du modtog den. Den skal også være i den originale emballage.Efter at have modtaget returneringsinstruktioner fra os, skal du pakke dine returnerede varer og aflevere din pakke på det lokale postkontor eller en anden kurer.Vi vil behandle din returnerede eller ombyttede vare inden for 3-5 arbejdsdage efter at vi modtager den. Refusionen vil blive behandlet og krediteret automatisk til din oprindelige betalingsmetode.Ingen returneringer eller ombytninger kan accepteres hvis produktet er produceret efter specialordre, herunder tilpasset størrelse, tilpasset farve eller tilpasset tryk.Har du brug for mere hjælp, kontakt os venligst. service@roymall.com eller Whatsapp: +447549870296
2.Refusionspolitik
Du får en fuld refusion eller 100% butikskredit efter at vi har modtaget den returnerede pakke og tjekket den. Refusionen vil blive behandlet og krediteret automatisk til din oprindelige betalingsmetode.Bemærk venligst at forsendelsesomkostninger og eventuelle toldgebyrer eller afgifter ikke refunderes. De ekstra forsendelsesomkostninger refunderes ikke, når pakken er blevet sendt. Du er ansvarlig for at betale disse gebyrer, og vi kan ikke fravige eller refundere dem, selv hvis ordren returneres til os.Når vi har modtaget og bekræftet din returnerede vare, vil vi sende dig en email for at meddele dig, at vi har modtaget din returnerede vare. Vi vil også meddele dig godkendelsen eller afvisningen af din refusion.Hvis du har problemer med refusionsprocessen, kontakt os venligst. service@roymall.com eller 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.
Roymall C.o.
Gratis gave
Forsendelsespolitik
Returpolitik
Coupon Code
Direct purchase from the factory 
Tools
Measurement & Analysis Instruments
Digital Multimeters & Oscilloscope
Signal Generator
