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工程部操作流程
货品资料建档
删除编码，注意：只有在系统中没有使用过的编码才能删除。
新增商品物料表（即BOM配方）
查询BOM配方，例如：查询成品SDRH5D28-560MC的BOM表
BOM配方变更作业
例如变更PL-0175330MCBC-00配方中的磁芯为另外一种磁芯
双击进入ERP系统
选择用户名，输入对应的密码，按确认即可登陆ERP系统了
点此进入货品资料建档
1点新增弹出下窗口
注：带*号的必须输入
2根据物料编码规则把新的编码输入到品号这里
3根据业务或采购部提供的客厂产品信息对应维护到系统中，注：规格必需输入供应商的简称
4根据编码的不同类型选择不同的大类，中类
5根据实物进行相对应的主副单位设置，副单位换算公式设置
8如果有固定的供应商就是这里维护进去
9选择存放的仓库库位
10如果该编码决定不使用了，在这里输入一个停用日期即可
13确认以上信息无误，点此按钮进行存盘
1点击速查弹出货品资料过滤窗口
2这里有多种查询方式
3例如直接查询已知的编码时可以勾上起止货品，弹出此窗口，选择查看的编码，同理，如果知道规格或名称勾上复选框，在后面输入相关内容
４点击过滤即可看其编码的所有信息
２点击删除即可把该编码删除。注：在系统中已经使用过的编码是不能删除的，如不想使用输入停用日期即可
1点击速查先查出想删除的编码
1首先选择已经新建的成品料号或包材料号，然后母件名称、类别、规格、数量、单位、仓库都会按该成品料号的信息带过出来的，而制造部门必须手工选择 注：在BOM表里只有成品料号和包装料号才需要做BOM配方
6如果此BOM配方不使用了，在这里输入截止日期即可停用，反之，如想再使用去掉日期即可
2输入BOM表中需要的子件，我们可以子件看作是装配时需要的物料,而对于它一下级,例如查看包材是由什么物料组成,那么可以把此产品的结构展开,看说明 3
3点此按钮可以把BOM表的结构展开
4以上打*号的栏目必须输入，注意：损耗率是根据每一款产品的损耗表来算的，以上内容要请工程师确认各项材料无误以后才能保存使用，因为如果BOM配方有误的话，后面的所有单据都会跟出错的，因为ERP是供应链来的，如果源头做错了跟着会有连锁负面反应的
5内容确认无误后，点击存盘即可
1 点击速查按钮
2 在此框内输入 SDRH5D28-560MC
3 点击此按钮即可
4 注意第二步框内查询内容一定是对应此栏,也就是说模糊查询的内容一定是包含在规格中
5 此按钮可以将规格和母件代号的位置进行调换，如果知道母件代号的可以位置互换一下，直接查询母件代号即可
6把内容查出来以后点击此按钮或直接双击该内容即可打开该BOM表了
7此表我们可以看作是装配时需要的物料,而对于它一下级,例如查看包材是由什么组成的,那么可以把此产品的结构展开，点击这里
8 点击此按钮打开产品结构图
9 找到包材即可
10 即表明包装材料的下级
2如果这里已经有替代品的话，表明你之前已经对该主料设置过替代料，这时直接选取即可
3如果替代品为空时即表明没有维护代料进去，因此点击编辑可以去到替代品输入的界面，输入其替代关系即可
4输入完所有的内容确认无误之后，点击存盘进行保存
1点击进入BOM配方变更作业
2如果只对单个BOM表进行更改的，点击指定BOM
3点击这按钮选择需要变更的BOM表
4指定BOM以后，选回变动物料
5对BOM表可以作出以上3种变更：
增加：对已有的BOM表增加子件
删除：删除BOM表中已有的子件
改变：把BOM表中已有的子件改为用另外一种材料
6活动代号选择
7点击此按钮，弹出下框，选择磁芯，双击选取
8在这里选择要更改的磁芯，双击选择中即可
9确认以上内容无误，点击存盘进行保存
10点此按钮把单据提交给上一级审核
11提交时系统会提示，此单是交给谁审核的，这里已经默认好的，直接点确认即可
12审核完后，先点击更改确认
13选中变更的单据，然后点击执行更改即可变更成功
正在加载中，请稍后...Posts Tagged ‘sdr’
There are few affordable standalone systems that allow you to transmit video over the air, and back in 2016, I had the chance to check out
taking HDMI or composite video input. It was easy to use and worked fine, but it would still cost close to $600, and might have been a little smaller.
Evariste Okcestbon has now created its own digital TV transmitter prototype, combining
with Raspberry Pi Zero board, and instead of supporting external input from HDMI or AV ports, he used an official Pi camera for video, and was able to transmit the video over a 1.2 GHz connection to a Raspberry Pi 2 with an RTL-SDR dongle, with the Pi 2 board also taking care of displaying the video signal.
The full flow of transmission can be summarized as follows:
Video from Pi Camera
AVC2TS software for H.264 encode and transport stream encapsulation
DVB2IQ software DVB-S modulator
LimeTX software I/Q streaming tool
LimeSDR Mini transmitting on 1.2 GHz amateur TV band
and on the receiving side:
RTL_SDR receives the 1.2 GHz signal @ 1Msps
Leandvb software for DVB-S demodulation to TS
TS2ES software converting it to an elementary H.264 stream
H.264 hardware decoding
Video output through HDMI port
The Raspberry Pi 2 is also running KisSpectrum spectrum analyzer software in parallel at step 2. All code is open source, and you’ll find packages and tools mentioned above in .
The video below demonstrates the setup in action and explains how it works.
LimeSDR mini sells
on Crowdsupply, so you’d just need to add the Pi Zero and Pi camera, with a total hardware cost of less than $200. The prototype is also quite a compact solution, but still messy with the cables, so we’ll have to see if Limemicro Systems or a third party ends up creating a “DTV Transmitter pHAT” for an even more compact and neater solution.
As a side note unrelated to the project above, Lime Micro has
a LimeSDR Mini Grove Starter Kit for Raspberry Pi in collaboration with Seeed Studio that is now listed on Crowdsupply for $249.
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was launched last year with the promise of integration with Ubuntu Snap Store allowing to easily download and install various radio implementations such as LTE, WiFi, Bluetooth, LoRa, etc… It was offered for $200 and up as part of a crowdfunding campaign, but Lime Microsystems is
with a cheaper and low end version aptly called LimeSDR Mini.LimeSDR mini specifications:
FPGA – Intel Altera Max 10
with 16K Logic gates, 549 KB M9K memory, 2,368 KB user flash memory
Storage –
4 MB f 2x128KB EEPROM for RF transceiver MCU firmware and data
Lime Microsystems
RF transceiver
Tx & Rx SMA connectors
Frequency range – 10 MHz to 3.5 GHz
RF bandwidth &# Mhz
Sample Rate &# MSps with 12-bit sample depth
Power Output (CW): up to 10 dBm
USB – 1x USB 3.0 port via FTDI FT601 controller chip
Expansion – 8-pin FPGA GPIO header
Misc – 2x
dual color LEDs, JTAG
Power – USB or external power supply
Dimensions – 69 mm x 31.4 mm
The company also put together a table to compare LimeSDR to LimeSDR Mini and other product on the markers from the dirty cheap RTL-SDR stick to more expensive and advanced solutions like Ettus B210.
The new LimeSDR Mini board will support the same development tools such as , and Snappy Ubuntu Core apps as its old brother, although I’m not quite sure about the status about the app store, as they did not provide that many details. The board will also be open source hardware, with hardware design files that should be released on
shortly before or after shipping. The company will also offer some accessories for the board such as an acrylic enclosure, and three SMA antennas optimized for 800-960 MHz,
LimeSDR Mini Prototype (no SMA connectors) in Acrylic Case
The goal is to raise at least $100,000 for mass production, and after a few days they’re off to a good start with over $76,000 pledged. All 500 $99 early bird rewards are gone, but you can still pledge $139 for the board with delivery planned for December 31, 2017. Shipping is free to the US, and $10 to the rest of the world.
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LPWAN standards such as LoRa or Sigfox allow you to transmit data over long distance, at ultra low power (up to 10 years on a AA battery), and for free if your use your own network (P2P or gateway), or a few dollars per years if you go through a network provider. The low cost is possible since those standards rely on 900 MHz ISM bands, meaning nobody has to pay millions of dollars to the government to obtain a license fee. Matt Knight looked at LoRa, and while Level 2 and 3 of the protocol (LoRaWan) has public documentation, Level 1 (LoRa PHY) is proprietary and the standard is proprietary.
So he decided to reverse-engineer LoRa PHY using
USB software defined radio, and software packages and tools such as Python and GNU Radio to successfully deliver
open source “GNU Radio OOT module implementing the LoRa PHY”.
He presented his work at
on September 15, and the video is worth a watch. He first explains why LPWAN IoT standards are awesome, the motivation about reverse-engineering work (mostly security), the hurdle (e.g. lies in documentation), the results, and work to be done.
You’ll find the presentation and the research paper on .
Thanks to Emanuele for the tip.
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A few months after Canonical and Lime Micro
aiming to be used as a development platform, but also as the base for low cost cellular or other wireless base stations, Facebook has
their own open source wireless access platform with OpenCellular project whose goal is to lower the cost of Internet connectivity in remote areas where the infrastructure does not exist.
This is how Marc Zuckerberg summarizes the project:
We designed OpenCellular as an open system so anyone — from telecom operators to researchers to entrepreneurs — can build and operate wireless networks in remote places. It’s about the size of a shoe box and can support up to 1,500 people from as far as 10 kilometers away.
Along with our solar-powered aircraft Aquila and high-bandwidth laser beams, OpenCellular is the next step on our journey to provide better, more affordable connectivity to bring the world closer together.
But we can get some more details via another , Engineer at Facebook including the following key points:
OpenCellular will supporting everything from 2G to LTE.
The system is composed of two main subsystems: general-purpose and base-band computing (GBC) with integrated power and housekeeping system, and radio frequency (RF) with integrated analog front-end.
The project will become open source over time, with hardware design, firmware and control software source code released publicly.
Facebook will collaborate with
(TIP) members, whose aim is to “reimagine the traditional approach to building and deploying telecom network infrastructure”.
The current GBC system supports four power sources: PoE (power-over-ethernet), solar, DC, and external (lead acid) or internal (lithium ion) batteries, and also includes sensors to monitor temperature, voltage, current, etc.. Two versions of the radio system are available on based on either one SoC (fixed functionality), or one FPGA (software defined radio). The radio can be used a full network-in-a-box when connected to the GBC, or an access point in standalone mode.
The systems have also been designed to allow a single person to install and operate them, and the enclosures are rugged to withstand all kinds of weather. The company has been testing it using 2G connectivity within their office, and expect to release the first reference design this summer.
Thank you Nanik!
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Canonical and Lime Micro showcased
a couple of months ago, with a promise to launch a crowdfunding campaign later this year. They’ve fulfill their promise, and launched the open source SDR, renamed to LimeSDR, on .
LimeSDR board specifications:
FPGA – Altera Cyclone IV EP4CE40F23 Altera FPGA compatible with EP4CE30F23
System Memory – 256 MB DDR2 SDRAM
Lime Microsystems
RF transceiver with continuous coverage of the frequency range between 100 kHz and 3.8 GHz; 61.44 MHz bandwidth
4 x TxOut and 6 x RxIn U.FL connectors
Power Output (CW): up to 10 dBm
Wi-Fi, GSM, UMTS, LTE, LoRa, Bluetooth, Zigbee, RFID, Digital Broadcasting, configurable through apps.
USB – 1x micro USB3 via CYUSB3014-BZXC Cypress Microcontroller
for control, data transfer and power
Misc – Status LEDs, RGB LEDs, 4x switches
Power – USB or external power supply
Dimensions –
100 mm x 60 mm
The board interfaces with systems running , and you can enable wireless protocols the easy way by simply installing the required app with snappy. If you implement a new protocol, it can also be easily shared through snappy apps.
LimeSDR with Aluminum Enclosure with 4 Antennas
Potential applications include radio astronomy,RADAR, 2G to 4G cellular basestation, media streaming (DVB, ATSC, ISDB-T), IoT gateway, HAM radio, wireless keyboard and mice emulation and detection, tyre pressure monitoring systems, aviation transponders, utility meters, drone command and control, test and measurement, and more.
It’s not the first FPGA based SDR system that’s available to hobbyist, so the company compared it to other platform such as
One, , and others, include ultra-low cost solution based on .
HackRF One
Ettus B200
Ettus B210
BladeRF x40
Frequency Range
70MHz-6GHz
70MHz-6GHz
300MHz-3.8GHz
22MHz-2.2GHz
100kHz-3.8GHz
RF Bandwidth
Sample Depth
Sample Rate
61.44MSPS (Limited by USB 3.0 data rate)
Transmitter Channels
Programmable Logic Gates
64 macrocell CPLD
40k (115k avail)
MAX5864, MAX2837, RFFC5072
Open Source
Schematic, Firmware
Schematic, Firmware
Schematic, Firmware
Oscillator Precision
+/-1ppm initial, +/-4ppm stable
Transmit Power
-10dBm+ (15dBm @ 2.4GHz)
0 to 10dBm (depending on frequency)
$420 ($650)
$299 ($199 early bird)
As mentioned in the comparison table, LimeSDR is open source hardware and you’ll find the Altium schematics & PCB layout, as well as the manufacturing files in , , , source code for the , and more in the various repo available on .
So far, the project has raised close to $70,000 out of its $500,000 goal. A $199 early bird pledge should get you LimeSDR board, as long as you are part of the 500 backers (200 left), after which you’d need to pledge $299 for the board. Unless you provide your own antennas, you may want to add $85 to your pledge to get the four antennas and cables, or if you want a complete system with the board, antennas, enclosure, and “turnkey support”, go for the acrylic or aluminum kits for respectively $499 and $599. Shipping is free to the US, and between $15 to $35 to the rest of the world, with delivery scheduled for November or December 2016 depending on the pledge.
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Canonical and Lime Micro have jointly announced SoDeRa low-cost software defined radio (SDR) which can be programmed to support any type of wireless standard including UMTS, LTE, LoRa, Bluetooth, Zigbee, RFID, Digital Broadcasting, and more, and aiming at helping operators reducing costs & complexity, while speeding up time to market and providing greater flexibility.
The kit will include a board with the following specifications:
FPGA – Altera Cyclone IV EP4CE40F23 Altera FPGA (compatible with EP4CE30F23)
System Memory &# MB DDR2 SDRAM
Lime Microsystems LMS7002M Transceiver with continuous Frequency range of 100 kHz – 3.8 GHz
4 x TxOut and 6 x RxIn U.FL connectors for RF cables
Power Output (CW): up to 6.5 dBm
Wi-Fi, 2G, 3G, LTE, any other air interfaces
USB – 1x micro USB3 via CYUSB3014-BZXC Cypress Microcontroller
for control, data transfer and power
Misc – Status LEDs, RGB LEDs, 4x switches
Dimensions –
100 mm x 60 mm
SoDeRa Block Diagram
Canonical (Ubuntu) will provide a framework for open source developers to develop apps supporting current and next generation wireless standards including 2G to 4G radio, TV broadcast, satellite communication, RFID, Bluetooth, WiFi, ZigBee, zwave, lorawan, ibeacon and radar. The Telecom operators will then have the flexibility to add additional standards to the base station or IoT gateway by simply uploading apps, removing the (over) reliance on Telecom hardware vendors.
SoDeRa is currently showcased at Mobile World Congress 2016 in Canonical and Lime Micro booth, and SoDeRa will soon be launched on Indiegogo. Interested telecom operators, or anybody who wants to received updated, are invited register their interest on .
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based on Xilinx Zynq-7000 series SoCs was introduced in 2014
by Avnet. The company has now introduced a new version specifically designed for software designed radios which combines Zynq-7035 SoC with Analog Devices AD9361 RF transceiver supporting 70 MHz to 6.0 GHz frequency bands. Target applications include portable agile wireless communications, P25 public safety Radio, point-to-point communication, femtocell & picocell base stations and portable instrumentation.
PicoZed SDR SoM (Click to Enlarge)
PicoZed SDR SoM specifications:
SoC – Xilinx Zynq XC7Z035-2L FBG676I AP SoC with a dual core Cortex A9 processor @ 800 MHz and Kintex-7 FPGA with 275K logic cells
System Memory – 1GB DDR3L SDRAM
Storage &#Mb QSPI Flash, microSD Card Interface
Network Connectivity &#/1000 Ethernet PHY
USB – USB 2.0 OTG ULPI PHY
I/Os &#+ User I/O + 4 GTX channels
Radio Transceiver – Analog Devices AD9361-BBCZ integrated RF Agile Transceiver with:
2 × 2 RF transceiver with integrated 12-bit DACs and ADCs
70 MHz to 6.0 GHz Band
TDD and FDD operation
Tunable channel bandwidth – &200 kHz to 56 MHz
Supports MIMO radio: & 1 sample
sync on both ADC and DAC
Miniature RF connectors – 4 TX, 4 RX, 2 TX monitor
Voltage regulation and sequencing with power-good failsafe circuits
Power and signal interface through 4 micro header connectors
Clock and frequency synthesis circuits
Dimensions – N/A
PicoZed SDR SoM Block Diagram
The company provides schematics, BoM, HDL, as well as Linux drivers and application software. The module is also supported
for Windows or Linux. To speed up development, an evaluation/development kit with the module and a carrier board is also available.
PicoZed SDR and Carrier Board
PicoZed SDR module sells , while PicoZed SDR AD9361 Development Kit goes
with a 10 weeks factory lead time. If you are interested in software defined radio, but find the price is a bit steep, there are some cheaper boards like
support about the same frequency bands, with less I/Os and processing power, but now costs around $300 to $400. If you just want to play around with SDR, you could also start with a , which is obviously much more limited are requires a PC or board.
More details about PicoZed SDR SoM can be found on the .
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Software Defined Radios (SDR) are neat little devices that capture radio signals which are them filtered and decoded by software on your PC or embedded system. Currently used radio spectrum is extremely wide from 3 to 30Hz for submarine communication up to 30 to 300+ Ghz or more for applications such as amateur radio or radio astronomy. So the price of hardware needed for SDRs varies greatly depending on the frequency range supported, bandwidth, and other technical parameters. Hobbyists can use “low cost” ($300 – $400) FPGA SDR boards such as
or , or go ultra cheap with . I’ve been informed there’s a development kit sold under the name &#KHz-1.7GHz Full Band UV HF RTL-SDR USB Tuner Receiver DIY Kit” based on the latter, but with extra components, on various sites such as , , , etc.. for just $33 to $45.
RTL-SDR USB Development Kit
The problem with many Chinese sellers is that they sell development kits without any documentation, and think people will just magically find out how to use them… The picture above shows all parts included with the kit: capacitors, resistors, jumpers, headers, the USB TV tuner, and extra board, some antennas and a white box. I first I was scratching my head thinking “how do these fit together?”.
But an other eBay seller seems to provide the same kit (TBC), but pre-assembled, , and the pictures give a clear understanding of how it all fits together. I’d assume this is made to improve the sensitivity or increase the range of the reception, compared to a USB TV dongle only solution. They also provide some links to Youku videos showing capture at 14.270MHz
and for AM radio, as well as links to
that can be used with that device based on Realtek RTL8232U + R820T.
Looking a bit further, I found an
where they also noticed the disassembled kit. Some documentation is said to be available in a document called “电视棒 套件的安装.doc”, but all links are now dead, except maybe a . But all is not lost, as somebody posted
for the kit for something that looks very similar called BA5SBA. The post of also written Chinese, but Google Translate and the pictures should help. The USB dongle is not used directly, but you have to take out the board inside, and solder it as a “module” in the opening found in the board provided with the kit.
SDR Devkit Fully Soldered and Assembled
Finally, we’ve got the assembly instructions for the kit, as well as links to software that should support it, so it could be an interesting kit to play with for those interested in SDR.
Thanks to onebir for the tip.
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