Ka whakaaetia ngā taonga hoki i roto i te 40 rā mai i te rā i whiwhi ai i ngā taonga. Kāore e taea te hoki mai i ngā taonga whaiaro. Kāore e taea te hoki mai i ngā taonga i hokona me te kāri koha e; kāore e taea te moni hoki.
Koha Kore Utu
Nau mai ki Roymall, tō paetukutuku ngaio mō te hoko koha toa matua. Ka whakahōnoretia, ka mihi ki tō tautoko, ā, ka hiahia mātou ki te whakaatu i tō mātou mihi mā te tāpiri i tētahi wāhanga hiamo ki āu hoko. I a koe e hoko ana i a mātou, kāore koe e whai wāhi ki te ngahau i ngā hua kounga teitei e whakapai ake i tō oranga, engari ka whiwhi hoki koe i tētahi koha kore utu muna me ia tono ka tukuna e koe. Kua rite ki te tirotiro i tō mātou kohinga, ki te kimi i ō koha tino pai? Tirohia tā mātou kohinga o ngā taonga toa matua, tuku mai i tō ota, ā, ka tūmanako ki te hiamo o tō koha kore utu e tae mai ana i te taha o tō hoko.
Kaupapa Tukunga
Ka mahi uaua mātou ki te tuku taonga ki a koe i muri i te whiwhinga o āu ota, ā, ka whakarite kia tae haumaru mai. Ka whakaratohia ngā taipitopito tukunga i roto i tō īmēra whakau.I te nuinga o ngā wā, ka tukatukahia ngā ota i roto i te 2 rā.I raro i ngā āhuatanga motuhake, ka rētihi pēnei: Ka tonoa e koe he ota i te Rāhoroi, i te Rātapu, i ngā rā hararei rānei, ka rētihi mō te 2 rā..He tikanga, e 5-7 rā mahi (Mane ki te Paraire) me kore e pāngia e te rētihi rererangi, e ētahi atu āhuatanga taiao rānei..Nā te mea kei te ao whānui tā mātou ratonga tuku, ka whakawhirinaki ngā wā tuku ki tō wāhi, nō reira me tatari mō ētahi wā mēnā kei ngā takiwahi tawhiti, kei ngā whenua tawhiti rānei koe.
1. Kaupapa Hoki & Whakawhiti
Ka whakaaetia e mātou anake ngā taonga i hokona mai i roymall.com. Mēnā ka hoko koe i ō mātou kaiwhakarato ā-rohe, i ētahi atu kaihoko rānei, kāore e taea te hoki mai i a mātou.Kāore e whakaaetia ngā taonga hokohoko mutunga, ngā koha kore utu rānei hei hoki.Kia uru ki te hoki, me kore e whakamahia tō taonga, ā, me noho ki te āhuatanga i whiwhi ai koe. Me noho hoki ki te kōpaki taketake.I muri i te whiwhinga o ngā tohutohu hoki mai i a mātou, tēnā koa kōpaki i ō taonga kua hoki mai, ka tuku i tō kōpaki ki te poutāpeta ā-rohe, ki tētahi kaihere rānei. Ka tukatukahia tō hoki, tō whakawhiti taonga i roto i te 3-5 rā mahi i muri i te whiwhinga. Ka tukatukahia te moni hoki, ka hoki aunoa ki tō huarahi utu taketake.Kāore e taea te whakaaetia he hoki, he whakawhiti rānei mēnā i hangaia motuhake te hua, tae atu ki te rahi whaiaro, te tae whaiaro, te tā whaiaro rānei.Mehemea kei te hiahia āwhina anō, whakapā mai. service@roymall.com Whatsapp rānei: +447549870296
2.Kaupapa Moni Hoki
Ka whiwhi koe i te moni hoki katoa, i te 100% moni hoki toa i muri i te whiwhinga o te kōpaki kua hoki mai, me te tirotiro. Ka tukatukahia te moni hoki, ka hoki aunoa ki tō huarahi utu taketake.Kia mōhio, kāore e taea te utu hoki i ngā utu tuku, i ngā utu, i ngā utu rānei. Kāore e taea te utu hoki i ngā utu tuku taapiri ina kua tukuna te kōpaki. Kei a koe te kawenga ki te utu i ēnei utu, ā, kāore e taea e mātou te whakakore, te utu hoki rānei, ahakoa ka hoki mai te ota ki a mātou. I muri i te whiwhinga me te whakau i tō taonga kua hoki mai, ka tuku īmēra mātou ki a koe hei whakamōhio kua whiwhi mātou i tō taonga kua hoki mai. Ka whakamōhio hoki mātou ki a koe mō te whakaaetanga, te whakakore rānei o tō moni hoki.Mēnā he raruraru ōu e pā ana ki te tukatuka moni hoki, whakapā mai. service@roymall.com Whatsapp rānei: +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.