Vrátenie tovaru bude akceptované do 40 dní od prijatia tovaru. Prispôsobené položky nie je možné vrátiť ani vymeniť. Položky zakúpené s elektronickým darčekovým poukazom je možné len vymeniť; vrátenie peňazí nie je možné.
Darček zdarma
Vitajte v Roymall, vašej profesionálnej webovej stránke na nákup prémiových darčekov. Veľmi si vážime a oceňujeme vašu podporu a chceme vám poďakovať tým, že pridáme extra nádej do vašich nákupov. Keď u nás nakupujete, nielenže získate vysokokvalitné produkty, ktoré zlepšia váš životný štýl, ale s každou objednávkou dostanete aj exkluzívny darček zdarma.Ste pripravení preskúmať našu kolekciu a nájsť svoje dokonalé darčeky? Prezrite si náš výber prémiových darčekov, zadajte svoju objednávku a tešte sa na radosť z vášho darčeka, ktorý príde spolu s vašou objednávkou.
Prepravná politika
Po prijatí vašej objednávky budeme pracovať na tom, aby sme vám tovar doručili a zabezpečili, aby dorazil bezpečne. Podrobnosti o doručení budú uvedené v potvrdzovacom e-maile.Vo väčšine prípadov sú objednávky spracované do 2 dní. Za mimoriadnych okolností bude oneskorenie nasledovné: Ak zadáte objednávku v sobotu, nedeľu alebo počas sviatkov, bude oneskorená o 2 dni.Normálne to trvá 5-7 pracovných dní (pondelok až piatok), ak nie sú ovplyvnené meškaním letu alebo inými environmentálnymi faktormi.Pretože naša prepravná služba je celosvetová, dodacie lehoty závisia od vašej polohy, takže môže trvať niekoľko dní, a ak sa nachádzate v odľahlých oblastiach alebo krajinách, buďte prosím trpezliví.
1. Politika vrátenia a výmeny
Akceptujeme iba položky zakúpené na roymall.com. Ak ste nakúpili od našich miestnych distribútorov alebo iných predajcov, nemôžete ich vrátiť na našej strane.Položky v konečnom predaji alebo darčeky zdarma nie je možné vrátiť.Aby ste mohli vrátiť tovar, musí byť nepoužitý a v rovnakom stave, v akom ste ho dostali. Musí byť tiež v pôvodnom balení.Po prijatí pokynov na vrátenie od nás zabalte vrátené položky a zanechajte balík na miestnej pošte alebo u iného prepravcu.Vašu vrátenú alebo vymenenú položku spracujeme do 3-5 pracovných dní po jej prijatí. Vrátenie peňazí bude spracované a pripísané automaticky na pôvodnú platobnú metódu.Nie je možné prijať vrátenie ani výmenu, ak bol produkt vyrobený na mieru, vrátane vlastnej veľkosti, farby alebo potlače.Potrebujete ďalšiu pomoc? Kontaktujte nás. service@roymall.com alebo Whatsapp: +447549870296
2. Politika vrátenia peňazí
Po prijatí vráteného balíka a jeho kontrole dostanete úplné vrátenie peňazí alebo 100% kredit v obchode. Vrátenie peňazí bude spracované a pripísané automaticky na pôvodnú platobnú metódu.Upozorňujeme, že náklady na dopravu a akékoľvek clá alebo poplatky nie sú vratné. Dodatočné náklady na dopravu nie sú vratné po odoslaní balíka. Zodpovedáte za zaplatenie týchto poplatkov a my ich nemôžeme odpustiť ani vrátiť, aj keď sa objednávka vráti späť k nám.Ak máte akékoľvek problémy s procesom vrátenia peňazí, kontaktujte nás. service@roymall.com alebo 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.