Datasheet

TG1006 - 10MHz DDS Function Generator with sweep and 120MHz counter
0.001Hz to 10MHz frequency range using DDS
6 digits or 1mHz setting resolution
1ppm stability and <10 ppm absolute accuracy for one year
Sine, square and triangle waveforms
Low distortion, high spectral purity sine waves
Simultaneous display of frequency and amplitude/offset
External seven digit 120MHz frequency counter
Internal full range phase continuous sweep, linear or log
Unique manual sweep mode for quasi-analog control
Modulations modes of AM, FSK and frequency list
2mV to 20V pk-pk output from 50W or 600W
Storage for up to ten frequencies in non-volatile memory
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DDS frequency generation
The TG1006 has been developed from the highly successful TG300 and
TG550 series of analog function generators. However, the TG1006 uses DDS
frequency generation to provide greater accuracy and stability, and to cover a
wider frequency range.
DDS (direct digital synthesis) 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.
When correctly engineered, the DDS generator offers not only exceptional
accuracy and stability but also high spectral purity, low phase noise and
excellent frequency agility.
Wide frequency and amplitude range
The TG1006 can generate waveforms between 0.001Hz and 10MHz with a
resolution of six digits and a one year accuracy better than 10ppm.
Amplitude is variable between 2mV and 20V pk-pk from a source impedance
of 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 spin
wheel.
Quasi-analog frequency control
One advantage that analog function generators have over digital ones is that
the frequency can be changed using an analog control. This provides intuitive
operation which is ideal for the setting up of frequency dependent parameters
such as checking filter characteristics.
The TG1006 provides a similar capability via its “manual sweep” mode. A
dedicated analog control sweeps the frequency over any defined span in a
similar way to an analog generator, but with the added advantage that the
span can be precisely controlled and can extend to almost the full range of the
generator.
Wide range sweep
All waveforms can be swept over almost the full frequency range (0.1Hz
to 10MHz) at a rate variable between 100 milliseconds and more than 15
minutes. The sweep is fully phase continuous and can be linear or logarithmic,
single or continuous.
FSK
Frequency Shift Keying provides phase coherent switching between two
selected frequencies at a rate defined by the trigger source which can be the
front 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 test
routine.
AM
Amplitude modulation from 0 to 100% is provided using either an internal
400Hz source or an external source (DC to 20kHz). All waveforms can be
modulated.
External frequency counter
In external counter mode the full width of the display is used to provide up to
seven digits of resolution.
The frequency range is from 3Hz up to more than 120MHz, and the input
sensitivity is better than 50mV rms.
A reciprocal counting measurement system is used which ensures high
resolution regardless of input frequency.
Suitable for bench or rack
The generator is housed in a 2U high case with built-in tilt stand. A rack
mounting kit is available.