dso4004c series - hantek

dso4004c series - hantek

Model DSO4254C DSO4204C DSO4104C DSO4084C Bandwidth 250MHz 200MHz 100MHz 80MHz Horizontal Sample Rate Range 1GS/s Waveform Interpolation (sin x)/x Record Length Maximum 64K samples per single-channel; Maximum 32K samples per dual-channel (4K, 32K optional) SEC/DIV Range 2ns/div~100s/div 1, 2, 5sequence Sample Rate and Delay Time Accuracy 50ppm Delta Time Measurement Accuracy (Full Bandwidth) Single-shot, Normal mode (1 sample interval +100ppm reading + 0.6ns) >16 averages (1 sample interval + 100ppm reading + 0.4ns) Sample interval = s/div 200 Vertical ADConverter 8-bit resolution, each channel sampled simultaneously VOLTS/DIV Range 500V/div to 10V/div at input BNC Position Range 500V/div~20mV/div, 400mV 50mV/div~200mV/div, 2V 500mV/div~2V/div, 40V 5V/div~10V/div, 50V Selectable Analog Bandwidth Limit, typical 20MHz Low Frequency Response (-3db) 10Hz at BNC Rise Time at BNC, typical DSO4254C DSO4204C DSO4104C DSO4084C <1.4ns 1.8ns 3.5ns 4.4ns DC Gain Accuracy 3% for Normal or Average acquisition mode, 10V/div to 10mV/div 4% for Normal or Average acquisition mode, 5mV/div to 500V/div Note: Bandwidth reduced to 6MHz when using a 1X probe. Acquisition Acquisition Modes Normal, Peak Detect, Average and HR Acquisition Rate, typical Up to 2000 waveforms per second per channel (Normal acquisition mode, no measurement) Single Sequence Acquisition Mode Acquisition Stop Time Normal,Peak Detect Upon single acquisition on all channels simultaneously Average After N acquisitions on all channels simultaneously, N can be set to 4, 8, 16, 32, 64 or 128 Trigger Mode Auto, Normal Level CH1~CH4 4 divisions from center of screen EXT 0~3.3V Holdoff Range 20ns ~ 10s Trigger Level Accuracy CH1~CH4 0.2div volts/div within 4 divisions from center of screen EXT (6% of setting + 40mV) Edge Trigger Slope Rising, Falling, Rising&Falling Source CH1~CH4/EXT Pulse Width Polarity Positive, Negative Condition(When) <, >, , = Source CH1~CH4 Width Range 8ns ~ 10s Resolution 8ns Video Trigger Signal Standard NTSC, PAL Source CH1~CH4 Sync ScanLine, LinrNum, OddField, EvenField and AllField Slope Trigger Slope Rising, Falling Condition(When) <, >, , = Source CH1 ~ CH4 Time Range 8ns ~ 10s Resolution 8ns Overtime Trigger Source CH1~CH4 Polarity Positive, Negative Time Range 8ns ~ 10s Resolution 8ns Window Trigger Source CH1~CH4 Pattern Trigger Pattern 0: Lower level; 1: High level; Level CH1~CH4 Interval Trigger Slope Rising, Falling Condition(When) <, >,, = Source CH1~CH4 Time Range 8ns ~ 10s Resolution 8ns Under Amp Polarity Positive, Negative Condition(When) <, >,, = Source CH1~CH4 Time Range 8ns ~ 10s Resolution 8ns UART Trigger Condition(When) Start, Stop, Data, Parity Error, COM Error Source(RX/TX) CH1~CH4 Data format Hex Condition(When) <, >,, = Data Length 1 byte Data Length 5 bit, 6 bit, 7 bit, 8 bit Parity Check None, Odd, Even Idle Level High, Low Baud Rate(Selectable) 110/300/600/1200/2400/4800/9600/14400/19200/38400/57600/115200/230400/380400/460400 bit/s Baud Rate (Custom) 300bit/s~334000bit/s LIN Trigger Condition(When) Interval Field, Sync Field, Id field, Sync Id Error, Identifier, Id and Data Source CH1~CH4 Data format Hex Baud Rate (Selectable) 110/300/600/1200/2400/4800/9600/14400/19200/38400/57600/115200/230400/380400/460400 bit/s Baud Rate (Custom) 300bit/s~334000bit/s CAN Trigger Condition(When) Start Bit, Remote Frame, Data Frame Id, Frame Id, DataFrame Id A, Error Frame, All Error, Ack Error, Overload Fram Source CH1~CH4 Data format Hex Baud Rate (Selectable) 10000, 20000, 33300, 500000, 62500, 83300, 100000, 125000, 250000, 500000, 800000, 1000000 Baud Rate (Custom) 5kbit/s~1Mbit/s SPI Trigger Source (CS/CLK/Data) CH1~CH4 Data format Hex Data Length 4, 8, 16, 24, 32 IIC Trigger Source (SDA/SCL) CH1~CH4 Data format Hex Data Index 0~7 When(Condition) Start, Stop, No Ack, Address, Data, Restart Inputs Input Coupling DC,AC or GND Input Impedance, DC coupled 20pF3 pF1M2% Probe Attenuation 1X,10X Supported Probe Attenuation Factors 1X, 10X, 100X, 1000X Overvoltage Category 300V CAT II Maximum Input Voltage 300VRMS(10X) Measurements Cursors Voltage difference between cursors: V Time difference between cursors: T Reciprocal of T in Hertz (1/T) Automatic Measurements Frequency, Period, Average, Pk-Pk, RMS, PeriodRms, Min, Max, RiseTime, FallTime, + Width, - Width, + Duty, - Duty, Vbase, Vtop, Vmid, Vamp, Overshoot, Preshoot, PeriodAvg, FOVShoot, RPREShoot, BWidth, FRR, FFF, FRF, FFR, LRR, LRF, LFR and LFF General Specifications Display Display Type 7 inch 64K color TFT (diagonal liquid crystal) Display Resolution 800 horizontal by 480 vertical pixels Display Contrast Adjustable Probe Compensator Output Output Voltage, typical About 2Vpp into 1M load Frequency, typical 1kHz Power Supply Supply Voltage 100-120VACRMS(10%),45Hz to 440HzCAT 120-240VACRMS(10%),45Hz to 66HzCAT Power Consumption <30W Fuse T3.15A250V5x20mm Environmental Operating Temperature 0~50 C (32~122 F) Storage Temperature -40~+71 C (-40~159.8 F) Humidity +104(+40C): 90%relative humidity 106~122 (+41C ~50C): 60%relative humidity Cooling Method Convection Altitude Operating and Nonoperating 3,000m10,000 feet Random Vibration 0.31gRMSfrom 50Hz to 500Hz, 10 minutes on each axis Nonoperating 2.46gRMSfrom 5Hz to 500Hz 10 minutes on each axis Mechanical Shock Operating 50g, 11ms, half sine Mechanical Dimension 318 x 110 x 150mm(L x W x H) Weight 2900g

high-frequency screen for all kinds of material | fote machinery

high-frequency screen for all kinds of material | fote machinery

High-frequency screen is made up of the vibrator, pulp distributor, screen frame, chassis, suspension springs, screens, and other components. Mineral high-frequency screen has the following merits: high efficiency, low amplitude, high-frequency screening.

High efficiency breaks the tension on pulp, which means the fine grains vibrate strongly on the surface of the screen to help the heavy useful grains separate out. As a result, the fine grains contact with screen frequently and the fine grains which are smaller than the need fall down from the screen pore and leave the grain we need.

As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories.

Based on the high quality and complete after-sales service, our products have been exported to more than 120 countries and regions. Fote Machinery has been the choice of more than 200,000 customers.

real-time data transfer between two esp32 using websocket client on arduino ide

real-time data transfer between two esp32 using websocket client on arduino ide

In recent years,Arduino and ESP32 based webserver projects have become very popular and useful for various applications. But one of the major drawbacks of such a web server is its static nature. Meaning to update the webpage over HTTP, you need to update the total webpage before you can update any data. There are many workarounds of this problem, like refreshing the webpage automatically after few seconds, and so on.

In one of our previous articles, we have built such an ESP32 based WebSocket server that can host a webpage and send updates without completely refreshing the page. Doing so made us wonder ifthere is any way for us to configure the ESP32 as a client that can connect to the server over Wi-Fi.

First, the client establishes a WebSocket connection through a WebSocket handshake. The handshake starts with an HTTP request that allows all the required services to handle HTTP connections and WebSocket connections.

Once the connection is established, both the ESP32s can send and receive data in full-duplex mode. Using the WebSocket protocol, the clients (The Web Browser and the ESP32 board) can send and receive information to the server without a request, and if configured correctly, the server can request the client to send or receive data. As we have said earlier, this process stays true if the client is a web browser.

As you can see in the above diagram, we have two circuits;one is for the ESP32 WebSocket server, which we have discussed in a previous article, and another one is for the ESP32 based WebSocket client. In this project, we will discuss the client-side.

The complete code used to configure the esp32 as a WebSocket client can be found at the bottom of this page. After adding the required header files and source files, you should be able to directly compile the Arduino code without any errors. If you do not have ESP32 Websocketlibraries, you can download them from the links given below.

We start our code by including all the required libraries. As we are working with the WebSocket client and OLED, we need to include the WebSocketsClient.h library as well as the Adafruit_SSD1306.hand ArduinoJson.h library alongside the WiFi.hand WebServer.h libraries.

Next, we have the WebSocket event function. This function is called automatically when a WebSocket event occurs. In this function, we first check and see if there is an incoming payload, and we also verify if it a string or not.

We are expecting a JSON string from the server. If its a string, then we deserialize it with the deserializeJSON function and we pass the payload and the Static JSON Document, which we have declared earlier.

Once the JSON string is deserialized, we have declared three variables to hold three parameters that are sent by the server, which is the LED_STATUS the Temperature and Humidity data from the DHT22 sensor.

The test circuit for the ESP32 based WebSocket client is shown above. As you can see, on the left-hand side, we have our ESP32 based server that has a DHT22 sensor and a LED attached, and on the right-hand side,we have our Android phone which is acting as a WebSocket client, and on the right of that, we have another ESP32 board that is acting as another WebSocket client.

Now, as we have connected through a WebSocket connection, if the DHT sensor data or the LED status changes, the changes will be reflected on the phone, also we can observe the changes on the OLED display.

And sure enough, when we click the 'on and off' button, the data on the OLED display also change and we also geta constant flow of data from the DHT22 sensor, which means our WebSocket connection is working smoothly.

#include #include #include #include #include #define SCREEN_WIDTH 128 // OLED display width, in pixels #define SCREEN_HEIGHT 64 // OLED display height, in pixels // Wifi Credentials const char* ssid = "YourSSID"; // Wifi SSID const char* password = "YourPASS"; //Wi-FI Password WebSocketsClient webSocket; // websocket client class instance StaticJsonDocument<100> doc; // Allocate a static JSON document Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1); //SSD1306 instance void setup() { // Connect to local WiFi WiFi.begin(ssid, password); Serial.begin(115200); while (WiFi.status() != WL_CONNECTED) { Serial.print("."); delay(500); } Serial.println(); Serial.print("IP Address: "); Serial.println(WiFi.localIP()); // Print local IP address if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64 Serial.println(F("SSD1306 allocation failed")); // OLED display not found for (;;); } delay(2000); // wait for 2s display.clearDisplay(); // clear the display display.setTextSize(2); // set Test size to 2 display.setTextColor(WHITE); //set display colour to "WHITE" //address, port, and URL path webSocket.begin("192.xxx.xxx.xxx", 81, "/"); // webSocket event handler webSocket.onEvent(webSocketEvent); // if connection failed retry every 5s webSocket.setReconnectInterval(5000); } void loop() { webSocket.loop(); // Keep the socket alive } void webSocketEvent(WStype_t type, uint8_t * payload, size_t length) { // Make sure the screen is clear // u8g2.clearBuffer(); if (type == WStype_TEXT) { DeserializationError error = deserializeJson(doc, payload); // deserialize incoming Json String if (error) { // Print erro msg if incomig String is not JSON formated Serial.print(F("deserializeJson() failed: ")); Serial.println(error.c_str()); return; } const String pin_stat = doc["PIN_Status"]; // String variable tha holds LED status const float t = doc["Temp"]; // Float variable that holds temperature const float h = doc["Hum"]; // Float variable that holds Humidity // Print the received data for debugging Serial.print(String(pin_stat)); Serial.print(String(t)); Serial.println(String(h)); // Send acknowledgement // webSocket.sendTXT("OK"); /* LED: OFF TMP: Temperature Hum: Humidity */ display.clearDisplay(); // Clear the display display.setCursor(0, 0); // Set the cursor position to (0,0) display.println("LED:"); // Print LED: on the display display.setCursor(45, 0); // Set the cursor display.print(pin_stat); // print LED Status to the display display.setCursor(0, 20); // Set the cursor position (0, 20) display.println("TMP:"); // Print TMP: on the display display.setCursor(45, 20); // Set the cursor position (45, 20) display.print(t); // Print temperature value display.setCursor(0, 40); // Set the cursor position (0, 40) display.println("HUM:");// Print HUM: on the display display.setCursor(45, 40); // Set the cursor position (45, 40) display.print(h); // Print Humidity vsalue display.display(); // Show all the information on the display } }

the spectrum display window n1mm logger plus

the spectrum display window n1mm logger plus

Spectrum Display Window If your red dots dont line up with signals, adjust the noise floor. Then use Shift+up/down to jump from signal tosignal! If you are having trouble finding a CQ frequency, press the CQ Button!

What is unique about the N1MM+ Spectrum Window is its ability to identifysignalsand allow the user to jump to those via keystroke as well as compare them to local and RBN spots to identify unspotted and already workedsignals.

* Adjust the REF level on your radio (or equivalent in your source) and the mouse-wheel noise floor to the point where the number of signals counted drops suddenly from a high number to a reasonable one. The noise floor is adjustable in 0.2 dB steps from 0-1 dB and in 1 dB steps thereafter. Check that you dont have the noise floor too high by tuning for a weak signal

The Spectrum Display window can forward the data it receives to another spectrum display window. The other spectrum window can be running in the original instance of N1MM+ or in N1MM+ running on any computer that is reachable via UDP packets. The forwarding computer only sends its spectrum display data: band, frequency, signal strength, display name, scaling factor. The destination instance of N1MM+ is responsible for display settings, the noise floor, and capturing packet spots.

If you want one instance of N1MM+ (e.g. a slave instance on a computer that is the source for spectrum data but that is not directly controlling the transceiver) to follow another N1MM+ instances frequency & mode (the master instance that is interfaced to the transceiver), you can forward the master instances broadcast data (in the Configurer broadcast tab) to the slave computers IP address, port 13064. You will have to open this port on the destination computers network router if the destination is at a remote site or just using a different router.

Netgear Routing ExampleIn the example above, external port 13064 is being routed to port 13064 on the computer with IP address on the LAN. (Line 3 Spectrum). This menu is accessed from Netgears Advanced/Advanced Setup/Port Forwarding & Port Triggering selection.

mev screener - midwestern industries, inc

mev screener - midwestern industries, inc

The high-frequency screens manufactured by Midwestern can be utilized in many screening applications from rugged quarry and rock sizing to sand and gravel processing and high volume fine mesh screening. With a variety of sizes and screening decks, the versatile MEV Screener can fit numerous applications.

The MEV High-Frequency Screener is a rectangular screener that utilizes an elliptical motion to convey material across itsscreening surface. Available in sizes three-foot by five-foot (3 x 5), four-foot by eight-foot (4 x 8), and five-foot by ten-foot (5 x 10) with the availability of one to five screening decks gives the MEV Screener the versatility to meet your screening needs.

The MEV Screener is designed to retain material at the feed end for a longer period of time and then gently slops the material near the discharge end, assisting itoff the screening deck and into production. This is achieved by the screeners unique parallel-arc configuration. Crossbars support the end-tensioned screens tocreate a flat screening surface, thus maximizing the screening area.

The end-tensioned screens used in the high-frequency screener simplify changing screen panels. End-tensioning permits the use of square-opening and slotted screens and is accurately maintained by a spring-loaded drawbar. Users can make screen changes in 1015 minutes.

Midwesterns commitment to providing our customers with outstanding screening products continues with our full line of replacement rectangular screens. Our screens are manufactured to fit all makes and models of screeners.

arduino high speed oscilloscope with pc interface : 8 steps - instructables

arduino high speed oscilloscope with pc interface : 8 steps - instructables

Transfered to a PC, these points can be accurately plotted against time.This Instructable will show you how the analogue input can be repeatedly added to a 1000 byte buffer and then transferred to a serial monitor. The data is collected using a high frequency interrupt, whose period can be accurately determined. The frequency can be altered to produce a range of possible periods.

I have written two slightly different versions for the Arduino data capture. One utilizes software triggering for when an accurate change in voltage is required, before the oscilloscope triggers. The second, uses hardware edge triggering based on an interrupt on Arduino pin 2. The hardware version runs a little faster at the highest frequency.

I did a minor rewrite today (31/8/2014). The PC interface now includes the option to set the voltage reference to accurately reflect the real value of the Arduino "5V" line. There are also small adjustments to the Arduino software.

As of 6/9/2014 I have developed a slightly modified version of the Software Triggered version which runs at up to 227.3 KHz on my Mega, using register commands to directly control single conversion reads. If there is interest, let me know.

In a fast run the arduino will wait for a serial response of any character for 1500 milli seconds after outputting data. If a character is received (a handshake), the Arduino will immediately gather more data. If 1500 mS is up more data is recorded, regardless.

Set the number of bits used in the analogue port capture. For speed 8 bits are read. The ADLAR bit controls the presentation of the ADC conversion Write one to ADLAR to left adjust. Otherwise, the value is right adjusted. This has an Immediate effect on the ADC Data Register.

Essentially if no triggering is selected, the adc interrupt is enabled and data is captured immediately. If triggering is selected an interrupt on digital port 2 is used to enable the interrupt on the adc port 1.

The flag triggered controls whether the digital port 2 interrupt starts the analogue port 1 interrupt . When triggered is false the interrupt starts the adc interrupt when it detects an edge in the analogue input.

2) For windows 7/8 copy the address of the folder in which you extracted the application. If you right click on the address in the bar at the top of windows file explorer you will find the option to copy the folder address.

Select frequency and you will get the square wave frequency. The first estimate is based on the rising edges at the midpoint of the voltage range. The second is based on a technique outlined in an excellent article at:

This bipolar converter is interesting. In the past I have designed these with an op amp, precision voltage reference and lots of trim pots. This design was inspired by an article which was supported by Ronald Michallick of Linear Applications. He suggested using a three resistor bridge and supplied an excel spreadsheet to design it.

My 20Mhz version was developed from work done by Bob Davis , who realised that the Arduino was never going to be able to directly measure significantly high data rates. His elegant solution was to use an external ADC and a fifo to capture the data at a high clock frequency. Once captured, the fifo flags the data capture completion and the Arduino transfers the data at it's clock frequency.

The 20 MHZ oscilloscope uses the tlc5510a and a 2K fifo (IDT7203L12TPG). By using a 2K fifo I am able to trigger by downloading all the data to the mega and then processing the trigger point in memory. Once found, I upload the subsequent 1000 values to the PC. Triggering is therefore rock solid. I have edge and level triggering on either voltage slope. A simple potentiometer is used to set the trig point.

3) Buffered, with the input dropped across 4 matched 22K resistors. This produces equal attenuations. The drop is passed through the excellent NE5534P 10MHz low noise op amp, configured as a follower... and then to a 4V3 zenner. This produces input ranges of 0 to 4, 5.33, 8 and 16V.

Hello DavidI have tried the program on mega I have boosted your image signal at 30KHZ.The signal is somewhat distorted. The extra frequency at 30KHZ is more distorted.If you can write me a program in which sampling shows me high frequencyProgram without programming a LED screen or connecting with a PC means a program that deals with ADC fast onlyThank you DavidI'm sorry to take your time.

// Defines for setting register bits#ifndef mysbi#define mysbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))#endif#ifndef mycbi#define mycbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))#endifconst byte testpin = 10;// connect pin10 to analogue 0 for testing// defines for pwm output on testpin (pin 10 specific on mega!)#ifndef fastpwm#define fastpwm (TCCR2B = (TCCR2B & B11111000) | B00000010)#endif#ifndef slowpwm#define slowpwm (TCCR2B = (TCCR2B & B11111000) | B00000100)#endif#define BUF_SIZE 1000uint8_t bufa[BUF_SIZE];const byte check = 1<= 237.2 KHz !!!!!*/void startad(){unsigned long starttime, endtime;startit = false;cli(); // disable interruptsmysbi(ADCSRA,ADEN); // enable ADCsei(); // enable interrupts// First conversion- initialises ADCmysbi(ADCSRA,ADSC); while((ADCSRA & check)== check); // wait for ADSC byte to go low// New conversion and use current ADCSRA value for triggerbyte startit = ADCSRA | check;ADCSRA = startit;starttime = micros(); for (unsigned int i = 0; i < BUF_SIZE; i++){ // wait for conversion while((ADCSRA & check)== check); bufa[i] = ADCH; // New conversion ADCSRA = startit; }endtime = micros();cli();mycbi(ADCSRA,ADEN); // disable ADCsei();elapsed = endtime - starttime;writeit = true;}

Hellothank you my friendBut I'm for the purpose of understanding ADC fast even in Arduino Mega and understanding the sampling method of 200KHZ so that the display signal is clean, so you will be able to correct the errors that are in itIt will download you the program you createdIt can be adjusted to take samples from 0-200KhzThank you-This is the program:#include "TimerOne.h"#define FASTADC 1// defines for setting and clearing register bits#ifndef cbi#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))#endif#ifndef sbi#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))#endifvolatile int value[300]; // variable to store the value coming from the sensorvolatile int i;volatile int p = 0;void setup(){ Serial.begin(9600) ;#if FASTADC // set prescale to 16 sbi(ADCSRA, ADPS2) ; cbi(ADCSRA, ADPS1) ; cbi(ADCSRA, ADPS0) ;#endif Timer1.initialize(10); Timer1.attachInterrupt( timerIsr1 ); // attach the service routine here}void timerIsr1() { if (p == 0) { for ( int i = 0; i < 300; i ++) { value[i] = analogRead(A0); // delayMicroseconds(2); }; p = 1; }}void loop(){ for (i = 0; i < 300; i++) { Serial.println(value[i]); delayMicroseconds(2); }// delayMicroseconds(2); p=0;}

Very nice! One option (for about the same cost) is to use the Teensy 3.1 (http://www.pjrc.com/teensy/teensy31.html) which is a lot faster, especially the A/D conversion (I think it can be done with DMA).

The teensy appears to be 3.3V based. So the Arduino and PC program would run incorrectly, without modification. I have no idea whether the same interrupts and register controls are available on the Teensy. The serial route out is also unclear to me. Not exactly a drop in solution?

Indeed, with the Teensy 3.1 running at 72 Meg and with 64k RAM it seems to me that this beautiful PC interface could be done justice!! We could be looking at a scope fast enough to debug normal Arduinos!!

high frequency rfid readers | 13.56 mhz passive rfid readers

high frequency rfid readers | 13.56 mhz passive rfid readers

GAO RFIDsHigh frequency (HF)13.56 MHz readers can read tags within a distance of 1 to 12 inches and include the use of the NFC protocol. Compatible with most MIFARE tags, we offer HF 13.56 MHz readers in many form factors such as fixed readers or handheld devicesthat are perfect for yourdesktop or mobile environment.

GAOs High Frequency 13.56 MHz reader operates at a frequency of 13.56 MHz and are designed to suit any business application and has wide choices depending upon the users specification and needs. High Frequency 13.56 MHz Passive RFID Readers are available in many form factors such as fixed readers or handheld devicesthat are perfect for yourdesktop or mobile environment.

High Frequency 13.56 MHz Passive Readers provide a serial of optional communication interfaces such as Bluetooth, USB, NFC , RS232/485, Wiegand 26/34 ,TCP/IP network , Wi-Fi ,GPRS , Ethernet connectivity ,WLan. These high frequency RFID readers are designed to support various typed of high frequency cards and MIFARE tags. Most of the high frequency rfid readers have the in-built antennas which give the read range of 1 to 12 inches.

With a supported band rate of the passive reader is 2400bps to 115200 bps, users can set up this transferring band rate and output interfaces as well as output data size, format and type, and with the help of NFC as communication interface it provides multiple operation mode for different applications. Some of the high frequency handheld reader has LCD display screen and has windows CE 5.0 Professional Plus operating system. The 13.56 MHz Handheld RFID Reader Writer has CPU of Intel XSCALE 255 chip; Main frequency 400 MHz with 64mb flash memory and 128Mb Sd ram while 13.56 MHz Handheld RFID Reader/Writer has CPU of Intel Processor 400 MHz and SD ram and Rom of 64MB. 13.56 MHz HF Rugged Handheld RFID Reader and 13.56 MHz Windows CE Handheld RFID Reader consist of same CPU PXA 270 chip; Main frequency 520 MHz 13.56 MHz high frequency reader also has LED indicators which are used for status indication. 13.56 MHz HF Rugged Handheld RFID Reader and 13.56 MHz Biometric Fingerprint RFID Reader supports browser like IE, chrome, safari and mozilla.

High Frequency 13.56 MHz Passive RFID Readers are designed to be compact, rugged has ISO certification of ISO 14443A, ISO15693 and ISO18000-3 standards, ISO 14443 A/B,ISO/IEC 7816-1/2/3 standard,ISO18092 and IP rating of IP 55 ,IP54 Standard Anti-shock / Dustproof,IP65 Rated and Shock Tested.

Some common applications of High frequency (HF)13.56 MHz readers are asset tracking, document management, jewelry inventory, medicine tracking, laundry management, logistic system, express parcel management, production authentication, access control/time recorder, ticketing smart label printer and encoder, system login/logoff, smart checkout multi tag solution, books and video rentals, guest registration system, authorization identification, identity authentication, data collection system, time attendance system, registration system, access control, parking systems, prepaid parking, ticketing, admission control, POS or, library management, inventory, warehouse management, drug management and anti- counterfeiting, customer benefit programs, and general smart card management systems. Users can use HF 13.56 MHz RFID readers in their system configuration to track valuables such as library books, ID cards for access control, and gaming chips. It is widely used in the industries of security / Patrol / Mining / Finance and Railway system, etc. Ideal for field service, direct store delivery, retail, warehouse and manufacturing applications.

From our offices in New York, New York, US and Toronto, Ontario, Canada, GAO has implemented thousands of RFID and IoT systems in North America and globally, including US and Canadian cities such as New York, Los Angeles, Chicago, Houston, Las Vegas, Vancouver and Montreal.

GAO offers a large selection of active, passive and semi-passive RFID readers, tags, and systems complying with local US and Canada industry standards, as well as international industry standards ISO, GS1 EPC Global Gen 1 and Gen 2, NFC. We have RFID tags to meet any application needs like rugged industrial, high-temperature, on-metal, livestock, medical, hazardous, beacon, wristband, tamper proof, tire and more. Readers are available in fixed, desktop, handheld, or mobile EDA / PDA compatible with Android or iOS with GPS, 1D/2D barcode and Bluetooth.

GAO has developed RFID and cloud-enabled access control, personnel, asset and vehicle tracking, and parking systems for various industries such as healthcare, construction, oil, gas, retail and manufacturing.

high frequency screens and flickering laurent's choice

high frequency screens and flickering laurent's choice

A high frequency monitor means more image rendered on your screen per second. Example in hand, if you have a 60 Hertz screen, your screen will refresh its rendered image 60 times per second. If you have a 100 Hertz refresh rate, then your screen will run at 100 Frames Per Second (FPS).

The only problem is that an abnormal amount of people report having issues with high refreshing rate monitors. No matter the monitor or video card monitor brand, thousands upon thousands of otherwise happy gamer are reporting the very same issue: Flickering (or black screens).

The epileptic nightmare. Imagine going on with your daily business, or playing your favorite video game, and suddenly, your screen goes black.. then comes back.. and then black again, doing so at irregular interval and without obvious reasons.

Your first reflect is to check that your display cable is securely in pace both on your monitor and your video screen, you may even reinstall your video card drivers, or try to OC your GPU. Every one seems to have the same approach.

Before going on to forums and start endless threads, which of some are a decade old with posting of a this very week, make sure to have what it takes to run a high frequency game and high frequency monitor.

Here is the funny thing. To take full advantage of a high refreshing rate, you need a game to output the same or greater Frames Per Second. For example, if you have your screen refresh rate set at 100 Hertz, and your game output only up to 60 FPS, then obviously, you will only see experience a 60 FPS game. You will need enough memory, CPU process, GPU horse power to match or over perform the monitor refreshing rate.

NVIDIA did try (somewhat successfully) to address this with its G-SYNC chip-set which it installs in both its newer GPUs and high performing monitors. This allows the GPU and the monitor to sync both the GPU performances and the monitor refreshing rate to have a matching FPS and refreshing rate as much as possible.

It seems almost trivial to say so, but make sure that your video card can handle such refreshing rates (if produced after 2011, they usually do) and that they are DisplayPort 1.2 compliant at the very least.

To run a high refresh rate monitor, ONLY the Display Port can do so! The HDMI (even 2.0) will lock your frequency at 60 Hertz or below. Any attempt to run your config at a higher refresh rate, will result in an out of range message on your screen.

Display Ports cable ARE confusing. Unlike USB plug, they do not have any color codes, or marking to identify which generation they belong to. Even their boxing seems to purposely not report what gen they are from.

The flickering effect that you so dread is due to the fact that you are using a 1.0 or 1.1 Display Port cable. These cables do not provide enough bandwidth to convey, say, 144 frames per second of 2k resolution. And when you do try, of course, your cable cannot keep up with the massive GPU output and what the monitor needs, to keep a steady flow of video output.

IIf you are going with a high-en gaming monitor, I would go straight to a 1.4 HBR3 cable. They are more expensive (about 35 USD), but you are set for generations of monitors and video cards to come. This new standard can not only deliver 240 Hertz refresh rates to a 4k panel, but it can cater to 5k and 8k panels as well! In short it is future proof!

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