Thurlby Thandar Instruments TTI TG1010 Generator
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This Programmable Function Generator
uses direct digital synthesis to provide high performance
and extensive facilities at a breakthrough price. It can generate a variety of waveforms between
0.1mHz and 10MHz with a resolution of 7 digits and an accuracy better than 10ppm.
Direct digital synthesis for accuracy & stability
Direct digital synthesis (DDS) is a technique for generating waveforms digitally using a phase
accumulator, a look-up table and a DAC. The accuracy and stability of the resulting waveforms is
related to that of the crystal master clock.
The DDS Generator
offers not only exceptional accuracy and stability but also high spectral purity,
low phase noise and excellent frequency agility.
A wide range of waveforms
High quality sine, square and pulse waveforms can be generated over the full frequency range of
0.1mHz to 10MHz.
waveforms, ramp waveforms and multi-level squarewaves can also be generated but
with limitations as to the maximum useable frequencies.
Variable symmetry/duty-cycle is available for all standard waveforms.
Arbitrary waveform capability
Arbitrary waveforms can be loaded via the digital interfaces and then used in a similar way to the
Up to five arbitrary waveforms of 1024 10-bit words can be stored in non-volatile memory. The
waveform clock is 27.48MHz maximum.
This facility considerably expands the versatility of the instrument making it suitable for the
generation of highly complex waveform patterns.
In addition, numerous “complex” waveforms are pre-defined in ROM, including commonly used
waveshapes such as sinex/x, exponentially decaying sinewave, etc. Further waveshapes will be
added to the library in response to customer requests.
All waveforms can be swept over their full frequency range at a rate variable between 10
milliseconds and 15 minutes. The sweep is fully phase continuous.
Sweep can be linear or logarithmic, single or continuous. Single sweeps can be triggered from
the front panel, the trigger input, or the digital interfaces. Two sweep markers are provided.
Amplitude Modulation is available for all waveforms and is variable in 1% steps up to 100%. An
internal AM source is incorporated. Alternatively modulation can be controlled from an external
Frequency Shift Keying provides phase coherent switching between two selected frequencies at
a rate defined by the switching signal source.
The rate can be set from dc to 50kHz internally, or dc to 1MHz externally.
Trigger/Burst & Gated
All waveforms are available as a triggered burst whereby each positive edge of the Trigger signal
will produce one burst of the carrier, starting and stopping at the phase angle specified by the
start-stop phase setting.
1.25 Mbytes (1307768 Bytes)
48591 - 0440
Electronic document, no scan, very well readable.
02 November 2013
Front Panel Connections
Rear Panel Connections 12
General Operation 14
Warning and Error Messages
Waveform Generation Options 17
Sweep Operation 25
Triggered Burst and Gate
Gated Mode 28
Amplitude Modulation 31
Storing and Recalling Set-ups
System Settings 39
Synchronising Generators 41
Application Examples 45
DDS Operation and Further Waveform Considerations 49
Remote Operation 52
Remote Commands 62
Remote Command Summary 69
Appendix 1. Warning and Error Messages 72
Appendix 2. Factory System Defaults 74
Appendix 3. Instructions for using TG1010
with WaveForm DSP 74
Appendix 4. Application Information Notes 76
Appendix 5. Calibration Password 78