TTI TG1006

TTI TG1006

10MHz DDS Function Generator with Counter

• 0.001Hz to 10MHz frequency range
• 6 digits or 1mHz resolution
• 1ppm stability and 10ppm one year accuracy
• Low distortion, high spectral purity sine waves
• Internal phase continuous sweep, lin or log
• Unique manual sweep gives quasi-analogue control
• AM and FSK modes, frequency list (10 steps)
• 2mV to 20V pk-pk from 50 or 600 Ohms
• Built-in seven digit 120MHz frequency counter

DDS frequency generation

The TG1006 has been developed from the highly successful TG300 andTG550 series of analog function generators. However, the TG1006 uses DDSfrequency generation to provide greater accuracy and stability, and to cover awider frequency range.DDS (direct digital synthesis) is a technique for generating waveforms digitallyusing a phase accumulator, a look-up table and a DAC. The accuracy andstability of the resulting waveforms is related to that of the crystal masterclock.When correctly engineered, the DDS generator offers not only exceptionalaccuracy and stability but also high spectral purity, low phase noise andexcellent frequency agility.

Wide frequency and amplitude range

The TG1006 can generate waveforms between 0.001Hz and 10MHz with aresolution of six digits and a one year accuracy better than 10ppm.Amplitude is variable between 2mV and 20V pk-pk from a source impedanceof 50W or 600W.

Numeric or spin-wheel frequency control

Frequencies can be entered directly from the numeric keypad in units of Hz,kHz or MHz.Alternatively any digit can be incremented or decremented using the spinwheel.

Quasi-analog frequency control

One advantage that analog function generators have over digital ones is thatthe frequency can be changed using an analog control. This provides intuitiveoperation which is ideal for the setting up of frequency dependent parameterssuch as checking filter characteristics.The TG1006 provides a similar capability via its “manual sweep” mode. Adedicated analog control sweeps the frequency over any defined span in asimilar way to an analog generator, but with the added advantage that thespan can be precisely controlled and can extend to almost the full range of thegenerator.

Wide range sweep

All waveforms can be swept over almost the full frequency range (0.1Hzto 10MHz) at a rate variable between 100 milliseconds and more than 15minutes. The sweep is fully phase continuous and can be linear or logarithmic,single or continuous.

FSK

Frequency Shift Keying provides phase coherent switching between twoselected frequencies at a rate defined by the trigger source which can be thefront panel key or internal timer (10kHz maximum).

Frequency list and stepping

The generator has non-volatile storage for up to 10 frequency settings.These can be used as random storage for commonly used frequency values,or can be stepped through in sequence as may be required in a repetitive testroutine.

AM

Amplitude modulation from 0 to 100% is provided using either an internal400Hz source or an external source (DC to 20kHz). All waveforms can bemodulated.

External frequency counter

In external counter mode the full width of the display is used to provide up toseven digits of resolution.The frequency range is from 3Hz up to more than 120MHz, and the inputsensitivity is better than 50mV rms.A reciprocal counting measurement system is used which ensures highresolution regardless of input frequency.

Suitable for bench or rack

The generator is housed in a 2U high case with built-in tilt stand. A rackmounting kit is available.