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Features Universal pen for use on almost all surfaces Suitable for overhead projection Also suitable for use on CDs/DVDs Excellent smudge-proof and waterproof qualities on almost all surfaces Dries in seconds, therefore ideal for left-handed users Permanent, low-odour ink Lightfast colours: black, brown Weatherproof colour black Stand-up STAEDTLER box PP barrel and cap guarantee long service life DRY SAFE – can be left uncapped for days without drying up (Standard atmosphere according to ISO 554) Airplane-safe - automatic pressure equalization prevents pen from leaking on board aircraft Xylene and toluene-free ink Superb colour brilliancy Line width superfine approx. 0.4 mm Refillable

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Specifications Bandwidth 100 MHz Sample Rate 100 MS/s Horizontal Scale (s/div) 5ns/div - 1000s/div, step by 1 - 2 - 5 Channel 4 Display 7" color LCD, 800 x 480 pixels Input Coupling DC, AC and GND Vertical Resolution (A/D) Vertical Resolution (A/D) Vertical Sensitivity 5mV/div - 5V/div (at input) Trigger Type Edge, Video Trigger Mode Auto, Normal and Single Waveform Math ＋, －, x, ÷, invert, FFT Fuse 2A, T class, 250 V Dimension (W x H x D) 301 x 152 x 70 mm Weight 1.1 kg Included 1 x SDS1104 1 x Mains power cord 1 x CD Rom 1 x Quickstart Guide 1 x USB Cable 4 x Oscilloscope probe 1 x Probe Adjust For more information, check out the user manual here.

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This book is all about building your own DIY home control system. It presents two innovative ways to assemble such a system: By recycling old PC hardware – possibly extending the life of an old PC, or by using Raspberry Pi. In both cases, the main system outlined in this book will consist of a computer platform, a wireless mains outlet, a controller and a USB webcam – All linked together by Linux. By using the Raspberry Pi in conjunction with Arduino (used as an advanced I/O system board), it is possible to construct a small, compact, embedded control system offering enhanced capacity for USB integration, webcams, thermal monitoring and communication with the outside world. The experience required to undertake the projects within this book are minimal exposure to PC hardware and software, the ability to surf the internet, burn a CD-ROM and assemble a small PCB.

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This book focuses more on practical aspects than on theory, and it has an contemplative nature, as though the author were viewing amplifiers from above. Knowledge elements are integrated and placed in the context of a broad overview. Even now tube amplifiers still sound great perhaps better than ever before. In part that is because we now have access to modern components such as toroidal output transformers, extremely high-quality resistors and capacitors, and many sorts of wire with good acoustic properties. Modern audio sources, such as CD players, and the latest top-end loudspeakers also enable us to appreciate how well tube amplifiers reproduce music even better than before. This new book from Menno van der Veen looks at tube amplifiers from more than just a theoretical perspective. It focuses primarily on the design phase, where decisions must be taken with regard to the purpose and requirements of the amplifier, and it addresses the following questions: How do these aspects relate to subjective and objective criteria? Which circuits sound the best, and why? If you want to develop and market an amplifier, what problems should you expect? What are the significance and meaning of measurements? Are they still meaningful, or have they lost their relevance? Thanks to the enormous processing power of computers, we can now measure more details than ever before. How can these new methods be applied to tube amplifiers? Previously it was sufficient to measure the frequency range, power and distortion of an amplifier in order to characterize the amplifier. Are these measurements still sufficient, or should we start measuring according to how we hear, using real music signals instead of waveforms from signal generators? The author sketches a future where amplifier measurements that conform to our sense of hearing enable us to arrive at new insights. This book focuses more on practical aspects than on theory, and it has an contemplative nature, as though the author were viewing amplifiers from above. Knowledge elements are integrated and placed in the context of a broad overview.

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OWON VDS1022I 2-channel USB oscilloscope (25 MHz) is a oscilloscope for use with a computer. It is powered by USB and has a small size, making it easy to take it with you. The oscilloscope is very economical. It has a shielded USB connection, reducing interference and protecting the computer against over-voltage. The multi port on the scope can be used for external triggering, trigger out or Pass / Fail output. Features 25 MHz bandwidth, and max 1 GS/s real-time sample rate 10M record length Friendly UI: FFT, or X-Y, and waveform 2 views displayed on the same screen Multi-trigger option: edge, video, slope, pulse, and alternate USB isolation – less signal inference, more PC protection USB bus powering, and LAN remote control (optional) Ultra-thin body design, easy portability Specifications Bandwidth 25 MHz Channel 2+1 (multi) Sample Rate 100 MSa/s Horizontal Scale (s/div) 5 ns/div～100s/div, step by 1～2～5 Record Length 5K Max Input Voltage 400 V (PK - PK) (DC+AC, PK - PK) 40 V (PK - PK) (DC+AC, PK - PK) Vertical Resolution (A/D) 8 bits (2 channels simultaneously) Model VDS1022I Vertical Sensitivity 5 mV/div～5 V/div Trigger Type Edge, Pulse, Video, Slope, and Alternate Trigger Mode Auto, Normal, and Single Acquisition Mode Sample, Peak Detect, and Average Waveform Math ＋, －, ×, ÷, invert, FFT Communication Interface USB 2.0 (isolation) Multi-function Interface Signal Type Level Standard TTL Power Supply 5.0 V/1 A Power Consumption ≤2.5 W Dimensions (W × H × D) 170 x 120 x 18 mm Weight 0.26 kg Included 1x OWON VDS1022I oscilloscope 1x CD-ROM 1x Quick start guide 2x Oscilloscope probe 1x Probe tool 1x Power adapter 1x USB cable 1x Silicone case protectors 1x Power cable Downloads Datasheet User manual SCPI protocol USB driver

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PiKVM V3 is an open-source Raspberry Pi-based KVM over IP device. It will help you to manage servers or workstations remotely, whatever the state of the operating system or whether one is installed. PiKVM V3 allows you to turn on/off or restart your computer, configure the UEFI/BIOS, and even reinstall the OS using the virtual CD-ROM or flash drive. You can use your remote keyboard and mouse or PiKVM can simulate a keyboard, mouse, and a monitor, which are then presented in a web browser as if you were working on a remote system directly. Features HDMI Full HD capture based on the TC358743 chip (extra low latency ~100 ms and many features like compression control). OTG Keyboard & mouse; Mass Storage Drive emulation. Ability to simulate 'removal and insertion' for USB. Onboard ATX power control Onboard fan controller Real-time clock (RTC) RJ-45 and USB serial console port (to manage PiKVM OS or to connect with the server). Optional AVR-based HID (for some rare and strange motherboards whose BIOS doesn't understand the OTG emulated keyboard). Optional OLED screen to display network status or other desired information. Ready-made board. No need for soldering or breadboarding. PiKVM OS – the software is fully open. Included PiKVM V3 HAT board for Raspberry Pi 4 USB-C bridge board – to connect the HAT with Pi over USB-C ATX controller adapter board and wiring – to connect the HAT to the motherboard (if you want to manage power supply through hardware). 2 flat CSI cables Screws and brass standoffs Required Raspberry Pi 4 MicroSD card USB-C to USB-A cable HDMI cable Straight Ethernet cable (for the ATX expansion board connection) Power supply unit (5.1 V/3 A USB-C, officiel RPi power supply is recommended) Downloads User Guide Images GitHub Links The PiKVM Project and Lessons Learned: Q&A with PiKVM creator and developer Maxim Devaev PiKVM: Raspberry Pi as a KVM Remote Control

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Siglent's SDG2000X is a series of dual-channel function/arbitrary waveform generators with specifications of up to 120 MHz maximum bandwidth, 1.2 GSa/s sampling rate and 16-bit vertical resolution. The proprietary TrueArb & EasyPulse techniques help to solve the weaknesses inherent in traditional DDS generators when generating arbitrary, square and pulse waveforms. With advantages above, SDG2000X can provide users with a variety of high fidelity and low jitter signals, which can meet the growing requirements of complex and extensive applications. Features Dual-channel, 40 MHz bandwidth, 20Vpp maximum output amplitude, high fidelity output with 80dB dynamic range. High-performance sampling system with 1.2GSa/s sampling rate and 16-bit vertical resolution. No detail in your waveforms will be lost. Innovative TrueArb technology, based on a point-by-point architecture, supports any 8pts~8Mpts Arb waveform with a sampling rate in range of 1μSa/s~75MSa/s. Innovative EasyPulse technology, capable of generating lower jitter Square or Pulse waveforms, brings a wide range and extremely high precision in pulse width and rise/fall times adjustment. Plenty of analog and digital modulation types: AM, DSB-AM, FM, PM, FSK, ASK and PWM. Sweep and Burst functions. High precision Frequency Counter. Standard interfaces: USB Host, USB DeviceUSBTMC, LAN (VXI-11) Optional interface: GPIB. 4.3” touch screen display for easier operation. Specifications Maximum output frequency 40 MHz Output channels 2 Sampling rate 1.2 GSa/s (4X Interpolation) Wave length CH1: 16 Kpts, CH2: 512 Kpts Frequency resolution 1 μHz Vertical resolution 16 bit Standard interfaces Standard interfaces: USB Host, USB Device (USBTMC), LAN (VXI-11) High-performance Sampling System Benefiting from a 1.2GSa/s and 16-bit sampling system, SDG2000X achieves extremely high accuracy performance in both time domain and amplitude, which results in more accurately reconstructed waveforms and lower distortion. Innovative EasyPulse Technology When a Square/Pulse waveform is generated by DDS, there will be a one-clock-jitter if the sampling rate is not an integer-related multiple of the output frequency. SDG2000X EasyPulse technology successfully overcomes this weakness in DDS designs and helps to produce low jitter Square/Pulse waveforms. Innovative TrueArb Technology For arbitrary waveforms, TrueArb not only has all the advantages of traditional DDS, but also eliminates the probability that DDS may cause serious jitter and distortion. Easy controll with 4.3” Touch Screen Display and Arbitrary Waveform Software EasyWave The 4.3” touch screen display, makes operation much more convenient. And EasyWave is a powerful arbitrary waveform editing software that supports several ways to generate arbitrary waveform such as manual drawing, line-drawing, equation-drawing, coordinate-drawing, etc. It is quite convenient for users to edit their own arbitrary waveforms through EasyWave. Included Siglent SDG2042X Arbitrary Function Generator User Manual Guarantee Card CD (including EasyWave 1.0 computer software system) Power Cord USB Cable Quick Start Guide

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The Pimoroni Explorer Starter Kit is an electronic adventure playground for physical computing based on the RP2350 chip. It includes a 2.8-inch LCD screen, a speaker, a mini breadboard and much more. It's ideal for tinkering, experiments, and building small prototypes. Features Mini breadboard for wiring up components Servo headers Analog inputs Built-in speaker Plenty of general purpose inputs/outputs Connectors for attaching crocodile leads Qw/ST connectors for attaching I²C breakouts Specifications Powered by RP2350B (Dual Arm Cortex-M33 running at up to 150 MHz with 520 KB of SRAM) 16 MB of QSPI flash supporting XiP 2.8" IPS LCD screen (320 x 240 pixels) Driver IC: ST7789V Luminance: 250 cd/m² Active area: 43.2 x 57.5 mm USB-C connector for programming and power Mini breadboard Piezo speaker 6x user-controllable switches Reset and boot buttons Easy access GPIO headers (6x GPIOs and 3x ADCs, plus 3.3 V power and grounds) 6x Crocodile clip terminals (3x ADCs, plus 3.3 V power and grounds) 4x 3-pin servo outputs 2x Qw/ST (Qwiic/STEMMA QT) connector 2-pin JST-PH connector for adding a battery Lanyard slot! Includes 2x desktop stand feet Fully-assembled (no soldering required) Programmable with C/C++ or MicroPython Included 1x Pimoroni Explorer 1x Multi-Sensor Stick – a fancy new all-in-one super sensor suite for environmental, light and movement sensing Selection of different colored LEDs to get blinky with (including red, yellow, green, blue, white and RGB) 1x Potentiometer (for analog amusements) 3x 12 mm switches with different coloured caps 2x Continuous rotation servos 2x 60 mm wheels for attaching to your servos 1x AAA battery holder (batteries not included) 1x Velcro to stick the battery holder to the back of Explorer 20x Pin to pin and 20x pin to socket jumper wires for making connections on your breadboard 1x Qw/ST cable to plug in the Multi-Sensor Stick 1x Silicon USB-C cable Downloads GitHub Schematic

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The 2-channel OWON XDG2035 is a function/waveform generator that can generate signals with a maximum frequency of 35 Hz. The generator has a resolution of 1 µHz and a sample rate of 500 MSa/s. The OWON XDG2035 is capable of generating 6 standard waveforms and 150 arbitrary waveforms. With the included software you can write advanced functions up to 10 million points. Waveforms can be saved to the function generator's internal memory using a PC via USB or LAN. The OWON XDG2035 also supports SCPI commands and LabView. The function generator has an integrated high-quality frequency counter, which can operate from 100 to 200 MHz. Features Max. 35 MHz frequency output 500 MSa/s Sample rate, Vertical resolution 1μHz 14 bits Vertical Resolution, 10 Marb waveform length Comprehensive waveform output: 6 basic waveforms,and 150 built-in arbitrary waveforms Comprehensive modulation functions: AM, FM, PM, FSK, 3FSK, 4FSK, PSK, OSK, ASK, BPSK, PWM, Sweep, and Burst High-accuracy frequency counter integrated, supported range 100-200 MHz SCPI and LabVIEW supported 7 inch multi-touch screen (800 x 480 pixels) Specifications Channel 2 Frequency Output 35 MHz Sample Rate 500 MSa/s Vertical Resolution 14 bits Waveform Standard Waveform sine, square, pulse, ramp, noise, and harmonic Arbitrary Waveform exponential rise, exponential fall, sin(x)/x, step wave, and others, total 150 built-in waveforms, and user-defined arbitrary waveform Frequency (resolution 1 μHz) Sine 1 μHz-100 MHz Square 1 μHz ~ 30 MHz Pulse 1 μHz ~ 25 MHz Ramp 1 μHz ~ 3 MHz Noise (-3 dB, typical) 100 MHz Arbitrary Waveform 1 μHz ~ 15 MHz Harmonic 1 μHz ~ 50 MHz Accuracy ±2ppm, 25°C ±5°C Waveform Length 2 points - 10M points Amplitude Into 50Ω load 1mVpp ~ 10Vpp (≤25 MHz); 1mVpp ~ 5Vpp (≤60 MHz); 1mVpp ~ 2.5Vpp (≤100 MHz) Modulation Type AM, DSB-AM, FM, PM, ASK, FSK, PSK, BPSK, QPSK, 3FSK, 4FSK, OSK, PWM, SUM Frequency Counter Function Frequency, period, +width, -width, +duty, and -duty Frequency Range 100 ~ 200 MHz Frequency Resolution 7 digits Input/Output Input mode frequency counter, external modulation input, external trigger input, internal clock output, external reference clock input/output Communication Interface USB Host, USB Device, LAN, RS232 (optional) Mechanical specifications Dimensions 340 x 177 x 90 mm Weight 2.3 kg Included 1x OWON XDG2035 1x Power Cord 1x CD-ROM 1x Quick start guide 1x USB Cable 1x BNC-BNC Cable Downloads Quick Guide

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