{"product_id":"atf20b-plus-20mhz-dual-channel-dds-function-generator","title":"ATF20B+ 20MHz Dual Channel DDS Function Generator","description":"\u003ch2\u003eATF20B+ 20MHz Dual Channel DDS Function Generator\u003c\/h2\u003e\n\u003cp\u003eThe ATF20B+ is a bench DDS function generator for electronics testing, waveform simulation, repair work, and circuit debugging. It gives you two independent output channels in one instrument: Channel A supports sine output up to 20MHz with 100MSa\/s sampling, while Channel B provides a second output for lower-frequency waveforms, phase setup, burst work, and modulation tests.\u003c\/p\u003e\n\u003cp\u003eFor buyers comparing a 20MHz signal generator, DDS function generator, or arbitrary waveform generator, this model is best suited to bench work that needs adjustable sine, square, ramp, pulse, noise, and arbitrary waveforms with fine frequency setting rather than a single fixed signal source.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDirect Digital Synthesis (DDS) design with two independent output channels.\u003c\/li\u003e\n\u003cli\u003eChannel A sine output up to 20MHz with 100MSa\/s sample rate, 1024-point waveform length, and 8-bit vertical resolution.\u003c\/li\u003e\n\u003cli\u003eChannel B supports 32 standard waveforms plus 8 arbitrary waveform groups, with 12.5MSa\/s sample rate and 1024-point waveform length.\u003c\/li\u003e\n\u003cli\u003e1µHz frequency resolution across the stated ranges for precise frequency adjustment.\u003c\/li\u003e\n\u003cli\u003e32 built-in waveform types, including sine, square, triangle\/ramp, pulse, noise, and arbitrary waveform options.\u003c\/li\u003e\n\u003cli\u003eFM, FSK, ASK, and PSK modulation functions for signal behavior testing.\u003c\/li\u003e\n\u003cli\u003eFrequency sweep, amplitude sweep, and burst output functions for dynamic signal checks.\u003c\/li\u003e\n\u003cli\u003eCounter functions measure frequency, period, RMS amplitude, or peak-to-peak amplitude.\u003c\/li\u003e\n\u003cli\u003eTTL output supports TTL\/CMOS compatible signal work.\u003c\/li\u003e\n\u003cli\u003eRS232 interface, 3.5-inch TFT LCD display, numeric keypad, direction keys, and rotary knob for bench operation.\u003c\/li\u003e\n\u003cli\u003eProtection functions include over-voltage, over-current, output short-circuit, and reverse-voltage protection.\u003c\/li\u003e\n\u003cli\u003eRear voltage selector supports AC110V or AC220V input; choose the correct setting before powering the instrument.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eVerified Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eATF20B+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput Channels\u003c\/th\u003e\n\u003ctd\u003eChannel A and Channel B, independent outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel A Waveforms\u003c\/th\u003e\n\u003ctd\u003e32 waveform types such as sine, square, triangle, pulse, plus 8 arbitrary waveform groups\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel A Sample Rate\u003c\/th\u003e\n\u003ctd\u003e100MSa\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel A Waveform Length\u003c\/th\u003e\n\u003ctd\u003e1024 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel A Vertical Resolution\u003c\/th\u003e\n\u003ctd\u003e8 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel A Frequency Range\u003c\/th\u003e\n\u003ctd\u003e1µHz to maximum sine frequency; 1µHz to 5MHz for square wave; 1µHz to 1MHz for other waveforms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel A Frequency Accuracy\u003c\/th\u003e\n\u003ctd\u003e±(5×10\u003csup\u003e-5\u003c\/sup\u003e)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel A Amplitude\u003c\/th\u003e\n\u003ctd\u003e2mVpp to 20Vpp from 1µHz to 10MHz; 2mVpp to 15Vpp from 10MHz to 15MHz; 2mVpp to 8Vpp from 15MHz to 20MHz, high impedance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel A Output Impedance\u003c\/th\u003e\n\u003ctd\u003e50 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel A Offset Range\u003c\/th\u003e\n\u003ctd\u003e±10V, high impedance, attenuation 0dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSweep Functions\u003c\/th\u003e\n\u003ctd\u003eFrequency sweep or amplitude sweep, 10ms to 900s, up\/down\/up-down\/single modes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModulation Functions\u003c\/th\u003e\n\u003ctd\u003eFM, FSK, ASK, PSK; PSK hop phase 0° to 360° with 1° maximum resolution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBurst Functions\u003c\/th\u003e\n\u003ctd\u003e1 to 65000 cycles, internal\/external\/single modes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel B Waveforms\u003c\/th\u003e\n\u003ctd\u003e32 waveform types plus 8 arbitrary waveform groups\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel B Sample Rate\u003c\/th\u003e\n\u003ctd\u003e12.5MSa\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel B Frequency Range\u003c\/th\u003e\n\u003ctd\u003e1µHz to 1MHz for sine; 1µHz to 100kHz for other waveforms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel B Amplitude\u003c\/th\u003e\n\u003ctd\u003e50mVpp to 20Vpp, high impedance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTTL Output\u003c\/th\u003e\n\u003ctd\u003eSquare wave rise\/fall time ≤20ns; 10mHz to 1MHz; TTL\/CMOS compatible, low level \u0026lt;0.3V, high level \u0026gt;4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDisplay\u003c\/th\u003e\n\u003ctd\u003e3.5-inch TFT LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eRS232\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Input\u003c\/th\u003e\n\u003ctd\u003eAC110V or AC220V via rear voltage selection switch, 50Hz, power consumption \u0026lt;45VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Conditions\u003c\/th\u003e\n\u003ctd\u003e0°C to 40°C, relative humidity \u0026lt;80%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlug Option\u003c\/th\u003e\n\u003ctd\u003eUS or EU plug option\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eItem Size\u003c\/th\u003e\n\u003ctd\u003e24 x 11 x 37.5cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eItem Weight\u003c\/th\u003e\n\u003ctd\u003e3.63kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage Size\u003c\/th\u003e\n\u003ctd\u003e40 x 29 x 18cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage Weight\u003c\/th\u003e\n\u003ctd\u003e4.68kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTypical Bench Uses\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCreating repeatable sine, square, ramp, pulse, noise, or arbitrary waveforms for electronics bench testing.\u003c\/li\u003e\n\u003cli\u003eChecking how a circuit responds to frequency changes, amplitude changes, burst output, and modulation behavior.\u003c\/li\u003e\n\u003cli\u003eUsing two channels when a test setup needs related waveforms, a modulation source, or separate signal outputs.\u003c\/li\u003e\n\u003cli\u003eMeasuring external signal frequency, period, RMS amplitude, or peak-to-peak amplitude with the counter function.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Function generator\u003c\/li\u003e\n\u003cli\u003e1 x Q9 testing cable\u003c\/li\u003e\n\u003cli\u003e1 x Q9 BNC-clips test lead\u003c\/li\u003e\n\u003cli\u003e1 x RS232 cable\u003c\/li\u003e\n\u003cli\u003e1 x Power line\u003c\/li\u003e\n\u003cli\u003e1 x CD\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSelection Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUse this product when you need a 20MHz dual-channel DDS function generator with sweep, burst, modulation, arbitrary waveform, TTL output, and RS232 functions.\u003c\/li\u003e\n\u003cli\u003eChannel A and Channel B do not have identical output limits. Channel A is the 20MHz, 100MSa\/s channel; Channel B has a lower frequency and sample-rate range.\u003c\/li\u003e\n\u003cli\u003eBefore use, confirm the rear AC110V\/AC220V selector and the plug option match your local power supply.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch4\u003eIs the ATF20B+ a dual-channel signal generator?\u003c\/h4\u003e\n\u003cp\u003eYes. The instrument has Channel A and Channel B outputs, and the product data describes them as independent output channels.\u003c\/p\u003e\n\u003ch4\u003eWhat is the maximum output frequency?\u003c\/h4\u003e\n\u003cp\u003eChannel A supports sine output up to 20MHz. Square wave and other waveform types have lower maximum frequency ranges, so choose the waveform according to the required test signal.\u003c\/p\u003e\n\u003ch4\u003eDoes it support arbitrary waveforms?\u003c\/h4\u003e\n\u003cp\u003eYes. The product data lists 32 standard waveform types plus 8 arbitrary waveform groups.\u003c\/p\u003e\n\u003ch4\u003eDoes it include modulation and sweep functions?\u003c\/h4\u003e\n\u003cp\u003eYes. It supports FM, FSK, ASK, PSK, frequency sweep, amplitude sweep, and burst functions.\u003c\/p\u003e\n\u003ch4\u003eCan it connect through RS232?\u003c\/h4\u003e\n\u003cp\u003eYes. The product specification and package list include RS232 interface\/cable information.\u003c\/p\u003e","brand":"FMF Supply","offers":[{"title":"Default Title","offer_id":43370973200473,"sku":"FMF-ATF20B-85977","price":295.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/4354\/5177\/files\/Sb39b1729f1b5496ea57606ed398dd22fY.webp?v=1780391263","url":"https:\/\/fmfpack.com\/products\/atf20b-plus-20mhz-dual-channel-dds-function-generator","provider":"FMF Supply","version":"1.0","type":"link"}