# TTi TG2000 20MHz DDS Function Generator (Pre-Owned) # TTi TG2000 20MHz DDS Function Generator (Pre-Owned) ## Key Features At A Glance - Direct Digital Synthesis waveform generation referenced to a crystal master clock for high accuracy and stability - Frequency from 1mHz to 10MHz (TG1000) or 20MHz (TG2000) with 6-digit / 1mHz setting resolution - ±10ppm one-year frequency accuracy and 1ppm stability across the series - Sine, square, triangle and positive/negative pulse waveforms with low distortion and high spectral purity - 5mV to 20V pk-pk output selectable from 50Ω or 600Ω source impedance, plus a multi-function auxiliary output - Sweep, gated, AM, FSK and tone-switching modulation modes with a built-in trigger/gate generator - Stores up to nine complete instrument set-ups in non-volatile memory - RS-232 and USB interfaces on the TG2000 for full remote programmability (TG1000 is front-panel control only) The Aim-TTi TG2000 and its companion TG1000 are Direct Digital Synthesis (DDS) function generators that bring crystal-referenced precision to a value-oriented price point. Every waveform is derived digitally from a crystal master clock using a phase accumulator, a look-up table and a DAC, so the accuracy and stability of the output track that of the reference oscillator. Unlike generators that digitise only the frequency setting, every function is digitally controlled, allowing complete instrument set-ups to be stored and — on the TG2000 — full remote control to be implemented. A function generator supplies the known, controllable stimulus an engineer needs to exercise a circuit and observe its response. Across these units that stimulus can be swept in frequency, gated, amplitude-modulated, frequency-shift-keyed or stepped through a tone list, while the multi-function auxiliary output can deliver a sweep-start pulse and an adjustable marker for synchronising an oscilloscope or chart recorder. Because all parameters are controlled electronically and up to nine complete set-ups are held in non-volatile memory, automated test sequences are straightforward to configure. ValueTronics stocks and holds its own inventory in a 20,000 square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois, and has specialised in new and used test-and-measurement equipment since 1992. Every pre-owned order ships directly from that facility; each pre-owned unit is inspected and functionally verified in-house before it leaves, while new units ship factory-sealed exactly as received from the manufacturer. ## Brand Heritage Thurlby Thandar Instruments Ltd., known as TTi, is one of Europe's established manufacturers of test-and-measurement instruments. Its products have historically been sold under two brand names, TTi and Aim, and the company has been consolidating its full product range under a single Aim-TTi brand, with many products continuing to carry the earlier TTi or Aim marks during the transition. ## Compare Other Models in This Series The TG1000 and TG2000 form a two-model family of DDS function generators that share the same architecture, waveform set, modulation modes and front-panel operation, differing principally in maximum output frequency. Both derive every waveform from a crystal clock using direct digital synthesis and store up to nine complete set-ups in non-volatile memory. The TG2000 extends the upper frequency limit to 20MHz and adds RS-232 and USB remote interfaces, while the TG1000 covers the same functions to a 10MHz limit. Choosing between them is largely a question of the highest frequency required and whether programmable remote control is needed. Each model below links to its own dedicated product page with pre-owned-matched pricing. Select the model that fits your frequency and interface requirements, then choose the pre-owned listing that matches your condition and budget preference. The TG2000 is the model equipped for remote operation: it includes an RS-232 interface — operable in a conventional mode or an addressable mode that controls up to 32 instruments from one port — together with a USB 1.1 connection, enabling full programmable control of every function and remote storage of set-ups. It also carries the family's 20MHz upper frequency limit. As the comparison table shows, the core difference is frequency span: the TG1000 reaches 10MHz and the TG2000 reaches 20MHz, each with six-digit or 1mHz resolution and the same ±10ppm one-year accuracy. Waveforms, amplitude range, sweep, gating, AM, FSK and tone-switching modulation are common to both. The second difference is connectivity. The TG2000 provides RS-232 and USB interfaces for full remote control and set-up storage, whereas the TG1000 is operated from its front panel. All other specifications — output impedance options, DC offset, the auxiliary sync output, the display and the stored-settings memory — are shared across the family. Model Max Frequency Resolution Output Level **TG2000** 20 MHz 6 digits or 1mHz 5mV to 20V pk-pk TG1000 10 MHz 6 digits or 1mHz 5mV to 20V pk-pk Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Product Core & Specifications Specification Value Frequency Frequency Range 1mHz to 10MHz (TG1000) or 20MHz (TG2000) Resolution 6 digits or 1mHz Accuracy ±10ppm for 1 year, 18°C to 28°C; ±1mHz below 0.2Hz Tempco. Typically <1ppm/°C outside of 18°C to 28°C Waveforms — Sinewave Range 1mHz to 10MHz/20MHz Resolution 6 digits or 1mHz Distortion <0.3% THD to 20kHz (typically 0.1%), <-45dBc to 300kHz, <-35dBc to 20MHz (typically <-40dBc) Spurii Non harmonically related spurii <-55dBc to 1MHz, <(-55dBc + 6dB/octave) 1MHz to 20MHz Output Level 5mV to 20V pk-pk from 50 Ω or 600 Ω Waveforms — Squarewave Range 1mHz to 10MHz/20MHz Resolution 6 digits or 1mHz Symmetry variable 20% to 80% in 1% steps Aberrations <5% + 2mV Rise & Fall Times <22ns Output Level 5mV to 20V pk-pk from 50 Ω or 600 Ω Waveforms — Triangle Range 1mHz to 1MHz Resolution 6 digits or 1mHz Linearity error <0.5% to 100kHz Output Level 5mV to 20V pk-pk from 50 Ω or 600 Ω Waveforms — Positive and Negative Pulse Range 1mHz to 10MHz/20MHz Resolution 6 digits or 1mHz Symmetry variable 20% to 80% in 1% steps Aberrations <5% + 2mV Rise & Fall Times <22ns Output Level 2.5mV to 10V pk-pk from 50/600 positive or negative only pulses with respect to the DC Offset baseline Modulation Modes — Gated Carrier frequency From 0.1Hz to 10MHz/20MHz Carrier waveforms All Trigger rep. rate dc to 100kHz external, dc to 5kHz internal Gate source Front panel MAN TRIG key, Internal Gate Generator, TRIG/GATE input, or Remote Interface Modulation Modes — Sweep Carrier waveforms All Sweep Mode Linear or logarithmic, single or continuous Sweep Width 0.2Hz to 10MHz/20MHz in one range. Phase continuous. Independent setting of the start and stop frequency Sweep Time 50ms to 999s (3 digit resolution) Markers Available from AUX output. Variable during sweep Sweep Trigger source The sweep may be free run or triggered from: front panel MAN TRIG key, TRIG/GATE input, or Remote Interface Modulation Modes — Amplitude Modulation Carrier frequency 1mHz to 10MHz/20MHz Carrier waveforms All Modulation source VCA IN socket Modulation Modes — Frequency Shift Keying (FSK) Carrier frequency 1Hz to 10MHz/20MHz Carrier waveforms All Switch rate dc to 5kHz (internal), dc to 1MHz (external) Switching signal source Front panel MAN TRIG key, Internal Trigger Generator, TRIG/GATE input, or Remote Interface Modulation Modes — Tone Carrier waveforms All Frequency list Up to 16 frequencies between 1Hz and 10MHz/20MHz Min. switching time 1ms per tone Switching source Front panel MAN TRIG key, Internal Trigger Generator, TRIG/GATE input, or Remote Interface Internal Trigger/Gate Generator Period 0.2ms to 999s (resolution 0.2 ms) Waveform Square wave (1:1 duty cycle) Main Output Output Impedance 50 Ω or 600 Ω switchable Amplitude 5mV to 20V pk-pk open circuit (2.5mV to 10V into 50/600) Accuracy ±3% ±1mV at 1kHz into 50/600 Flatness ±0.2dB to 500kHz; ±1dB to 10MHz; ±2dB to 20MHz DC Offset ±10V from 50/600. DC offset plus signal peak limited to ±10V. Accuracy ±3% ±10mV Resolution 3 digits for both amplitude and offset Auxiliary Output Waveform Sync Outputs a 50% duty cycle squarewave at the main waveform frequency Trigger Out Outputs a replica of the current trigger signal Sweep Sync Outputs a trigger signal at the start of sweep (for synchronising an oscilloscope or chart recorder). Can additionally output a sweep marker. Signal Levels Output Impedance 50 Ω nominal. Logic levels of <0.8V and >3V. Sweep Sync is a 3 level waveform, low at start of sweep, high at end of sweep, with a narrow 1V pulse at the marker point Inputs — Ext Trig/Gate Frequency Range DC to 1MHz for FSK; DC to 100kHz for Gate; DC to 2.5kHz for Tone and Sweep Signal Range Nominal TTL level threshold; maximum input ±10V Min. Pulse Width 100ns for Gate/FSK; 0.2ms for Sweep and Tone Input Impedance Typically 10kΩ Inputs — VCA In Frequency Range DC - 100kHz Signal Range 2.5V for 100% level change at maximum output Input Impedance Typically 6kΩ > **Important:** In positive or negative pulse modes the amplitude range is 2.5mV to 10V pk-pk open circuit. > **Important:** Specifications apply at 18° - 28°C after 1 hour warm-up, at maximum output into 50 Ω. > **Important:** RS-232 and USB remote-control interfaces are fitted to the TG2000 only; the TG1000 has no digital interface. > **Important:** Mains operating voltage (100V / 110-120V / 220-240V) is selected by an internal adjustment, not a front-panel switch. ## About this Pre-Owned unit This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects. - Warranty included - Functional verification included - Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data. - Note that unnecessary accessories may not be included (contact Test Architect to confirm). ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application. **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 0.0 USD - 840.0 USD - **Vendor:** TTi - **Type:** Tv Gen - **Tags:** Manufacturers, product_manual_group_1, Product_used, Signal Generators, Tektronix, TV ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 420.00 USD | In stock | | NIST Traceable with Full Data | 630.00 USD | In stock | | ISO IEC 17025 Accredited | 840.00 USD | In stock | ## Images - TTi TG2000 20MHz DDS Function Generator (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/tg2000-tektronix-tv-generator-used) > Updated: 2026-06-27