O mea e toe faafoi e talia i totonu o le 40 aso pe a o le aso e maua ai oloa. E le mafai ona toe faafoi pe fesuiai mea faʻapitoa. O mea na faʻatauina ma se kata meaalofa e mafai ona fesuiai; e le talia toe totogi.
Meaalofa e leai se totogi
Susū mai i Roymall, lau upega tafaʻilagi faʻapolofesa mo le faʻatauina o meaalofa maualuga. Matou te faʻatauaina ma talisapaia lau lagolago, ma matou te fia faʻaalia la matou faʻafetai e ala i le faʻaopoopoina o se lagona fiafia i au faʻatauga. A e faʻatau mai ia i matou, e le gata e te maua oloa maualuga e faʻaleleia ai lou olaga, ae o le a e mauaina foi se meaalofa e leai se totogi i soʻo se oka e te faia. Sauni e suʻesuʻe la matou aoina ma maua au meaalofa lelei? Suʻesuʻe la matou filifiliga o oloa maualuga, fai lau oka, ma faʻatali mo le fiafia o lau meaalofa e leai se totogi e oʻo mai faʻatasi ma lau faʻatauga.
Faiga faʻavae o uta
O le a matou galulue malosi e momoli atu oloa ia te oe pe a uma ona maua au oka ma faʻamautinoa e saogalemu le taunuu. O faʻamatalaga o le uta o le a tuʻuina atu i lau imeli faʻamaonia.I le tele o tulaga, o oka e faʻatautaia i totonu o le 2 aso. I tulaga faʻapitoa, o le a tuai e pei ona taua i lalo: A e faia se oka i le Aso Toʻonaʻi, Aso Sa poʻo aso malolo, o le a tuai mo le 2 aso.E masani lava, e manaʻomia le 5-7 aso faigaluega (Aso Gafua i le Aso Faraile) e aunoa ma le aʻafia i le tuai o vaalele poʻo isi mea tau siosiomaga.Talu ai o la matou auaunaga uta o le lalolagi atoa, o taimi o le uta o le a faʻalagolago i lou nofoaga, ma atonu e manaʻomia ai sina taimi ma faʻatali ma le onosaʻi pe afai o loʻo e i totonu o itumalo mamao poʻo atunuʻu.
1. Faiga faʻavae o le toe faafoi & fesuiai
Matou te talia na o mea na faʻatau mai roymall.com. Afai e te faʻatau mai a matou tufatufa i le lotoifale poʻo isi faleoloa, e le mafai ona e toe faafoi ia i matou.E le talia le toe faafoi o mea faʻaiʻu poʻo meaalofa e leai se totogi.Ina ia agavaa mo le toe faafoi, e tatau ona le faʻaaogaina lau oloa ma i le tulaga lava e tasi na e mauaina ai. E tatau foi ona i totonu o le uluai afifiina.Ina ua uma ona maua faʻatonuga toe faafoi mai ia i matou, faʻamolemole afifi au mea e toe faafoi ma lafo lau afifi i le falemeli poʻo se isi avefeʻau. O le a matou faʻatautaia lau toe faafoi poʻo le fesuiai oloa i totonu o le 3-5 aso faigaluega pe a uma ona matou mauaina. O le toe totogiina o le a faʻatautaia ma tuʻuina atu otometi i lau auala muamua o le totogiina.E le mafai ona toe faafoi pe fesuiai mea na gaosia faʻapitoa, e aofia ai le lapoa faʻapitoa, lanu faʻapitoa, poʻo le lolomi faʻapitoa.Manaʻomia nisi fesoasoani, faʻamolemole faʻafesoʻotaʻi matou. service@roymall.com poʻo Whatsapp: +447549870296
2.Faiga faʻavae o le toe totogiina
E te maua se toe totogiina atoa poʻo le 100% aitalafu faleoloa pe a uma ona matou mauaina le afifi toe faafoi ma siaki. O le toe totogiina o le a faʻatautaia ma tuʻuina atu otometi i lau auala muamua o le totogiina.Faamolemole ia matau o tau o uta ma soʻo se tiute poʻo pili e le mafai ona toe totogi. O tau faaopoopo o uta e le mafai ona toe totogi pe a uma ona lafo le afifi. O oe e nafa ma le totogiina o nei pili ma matou te le mafaia ona faʻamagalo pe toe totogi, tusa lava pe toe faafoi le oka ia i matou.Pe a matou mauaina ma faʻamaonia lau mea toe faafoi, o le a matou lafo atu ia te oe se imeli e taʻu atu ai ua matou mauaina lau mea toe faafoi. O le a matou faʻailoa atu foi ia te oe le faʻamaoniga poʻo le teena o lau toe totogi.Afai ei ai ni faʻafitauli e uiga i le faagasologa o le toe totogiina, faʻamolemole faʻafesoʻotaʻi matou. service@roymall.com poʻo Whatsapp: +447549870296
Videos for similar product
Loading product videos...
❮
❯
Products related to this item
Loading related products...
❮
❯
Features:
- With DC dimming method, 4" full-view LCD screen can be seen more clearly for outdoor uses, and more comfortable for indoor uses.
- Optimized Electric Bridge: Making full use of the harmonics of Si5351, it can use the 5th harmonic to measure up to 1.5GHz.
- When fundamental wave is used, the output level of CH0 is increased to 0dBm, making reflection measurement more accurate.
- Solved the abnormality of NanoVNA-H when operating at around 6MHz before.
- Redesigned power management circuit reduces power noise, USB power interference, and charging current.
- Improved PCB layout.
- Reserved UART interface for DIY expansion.
- Lightweight ABS shell keeps the device well protected.
-Computer software supports control and real-time display. And it support for exporting snp files for various radio design and simulation software.
- As a measuring device, accuracy is of great importance. Simple calibration parts are included in the package. We have calibrated the product"s dual ports before delivery. When your measurement conditions change (for example, switching from a narrower calibration bandwidth to a wider measurement bandwidth with an extension cable measurement), you need to re-calibrate. After calibration, it is saved as setting 0, which can be used directly at the next boot, or it can be saved to the other 4 saved items through recall when needed.
Parameters:
1. ABS Shell: 75mm x 133mm x 18mm (excluding protrusions)
Really valuable instrument, with lot of options for the price. A single BIG defect, luckily quickly solved googling around: the touch screen responds randomly, sometimes by its own, sometimes not reacting to taps. I discovered that the plastic box is slightly thick and "pushed" the touch screen on the side. Putting four plastic washers between the two halves of the enclosure at the screws and screwing back all, solved the problem.
Shipping is super fast as usual. Packaging is OK, but plastic could not protect the paper box (which is nice, but not very practical).
As I have an older NanoVNA-F I can compare H4 with it.
H4:
Electrically it's better without hesitation. It has no trouble to keep everything below -60dB till 900MHz, and -50dB till almost 1.5GHz. This is really impressive.
It's lighter due to plastic case (I regard this as a positive thing).
LCD size is a bit smaller than F, but as there is no scale it looks almost the same.
LCD visibility (especially from SMA side) is slightly worse than F.
Touch reliability is slightly worse than F.
Pushable rotating knob is still nothing to write home about but it seems to work.
So far I could not locate a new SW version (I mean binary as I'm not keen compiling it myself). In addition the menu cheat sheet contains a DFU menu that is not found on the actual menu of the SW... So it's unclear to me how firmware update supposed to be done if it's necessary.
In overall it's light and electrically so far the best package (it's a very good value). I look forward seeing the V2 variant with a similar size display.
Roymall C.o.
Meaalofa e leai se totogi
Faiga faʻavae o uta
Faiga faʻavae o le toe faafoi
Coupon Code
Direct purchase from the factory 
Tools
Measurement & Analysis Instruments
Spectrum Analyzers
