Technical Specifications
WAVEFORMS
Standard Waveforms
Sine, square, triangle, DC, positive ramp, negative ramp, sin(x)/x, pulse, pulse train,
cosine, haversine and havercosine.
Frequency Accuracy: Better than 10 ppm for 1 year.
Temperature Stability: Typically <1 ppm/ oC
Sine, Cosine, Haversine, Havercosine
Range (Resolution): 0.1 mHz to 40 MHz. (0.1mHz or 10 digits)
Harmonic Distortion: <0.15% THD to 100kHz; <-60dBc to 20kHz, <-50dBc to
1MHz, <-40dBc to 10MHz, <-30dBc to 40MHz.
Non-harmonic Spurii: <-60dBc to 1MHz, + 6dB/octave 1MHz to 40MHz.
Square
Range (Resolution): 1 mHz to 50 MHz. (1mHz or 7 digits)
Rise and Fall Times: <8ns
Triangle
Range (Resolution): 0.1 mHz to 500 kHz. (0.1mHz or 7 digits)
Linearity Error: <0.1% to 30 kHz
Ramps and Sin(x)/x
Range (Resolution): 0.1 mHz to 100 kHz. (0.1mHz or 10 digits)
Linearity Error: <0.1% to 30 kHz (ramps)
Pulse and Pulse Train
Rise and Fall Times: <8ns
Period: Range 40ns to 100s. Resolution 7 digits or 10ns.
Delay and Width: Range -99.9s to + 99.99s. Resolution 0.001% period or 10ns.
Trains of up to 10 pulses may be specified, each having independently defined width,
delay and level. The baseline voltage is separately defined and the sequence repeti-
tion rate is set by the pulse train period.
ARBITRARY
Up to 4 user defined waveforms may be stored. Arbitrary waveforms can be defined
by downloading of waveform data via RS232 or USB (or GPIB if fitted)
Waveform Size: 65536 (64K) points maximum, 8 points minimum.
Vertical Resolution: 12 bits
Sample Clock Range: 100mHz to 100MHz. Resolution 7 digits or 0.1 mHz
Output Filter: Selectable between 40MHz Elliptic, 20MHz Bessel or none.
Noise Function:
Digital noise generated by a 35-bit linear feedback register clocked at 100MHz.
User’s external filter defines bandwidth and response.
ARBITRARY WAVEFORM CREATION / EDITING
Waveform Manager Plus software for Windows is supplied.
Full details of its capabilities are on our website or within the Waveform Manager
Plus brochure.
MODULATION MODES
Sweep
Capability provided for both standard and arbitrary waveforms. Linear or logarithmic
sweep, continuous or triggered, directions of up, down, up/down or down/up.
Sweep range of 1mHz to 40 MHz in one range, phase continuous with independent
setting of start/stop. Sweep time variable 1ms to 999s (3 digit resolution).
One Marker is provided, variable during the sweep.
The sweep may be free run or triggered from the following sources: Manually from
keyboard. Externally from TRIG IN input or remote interface.
Other Modulation Modes
Modes of Triggered Burst, Gated, and Tone Switching (gated, triggered, or FSK
switching from a list of up to 16 frequencies).
NOTE: The full specification of these modulation modes is provided on our website.
Trigger Generator
Internal source 0.005 Hz to 100kHz squarewave adjustable in 10us steps. 3 digit res-
olution. Available for external use from the SYNC OUT socket.
DIGITAL INTERFACES
Full remote control and waveform download facilities are available through the
RS-232 and USB interfaces. GPIB is available as an option.
RS-232: Variable Baud rate, 9600 Baud maximum. 9-pin D-connector.
(Also compatible with TTi ARC system)
USB: Conforming with USB 1.1
GPIB (Optional): Conforming with IEEE488.1 and IEEE488.2
OUTPUTS
Main Output
Output Impedance: 50W
Amplitude: 5mV to 20V pk-pk open circuit (2.5mV to 10V pk-pk into 50W).
Amplitude can be specified open circuit (Hi Z) or into an as-
sumed load of 50Wor 600W, in Vpk-pk, Vrms or dBm.
Amplitude Accuracy: Better than 2% ±1mV at 1kHz into 50W.
Amplitude Flatness: ±0.2dB to 1MHz; ±0.4dB to 40MHz.
DC Offset Range: ±10V. DC offset plus signal peak limited to ±10V from 50W.
DC Offset Accuracy: Typically within ±3% ±10mV, unattenuated.
Resolution: 3 digits or 1mV for both Amplitude and DC Offset.
Sync Out
Multifunction output user definable or automatically selected to be any of the following:
Waveform Sync, Burst Done, Sweep Sync, Sweep Marker, Phase Lock Out.
NOTE: The full specification of the Sync Out signal is provided on our website.
INPUTS
Trig In
Frequency Range: DC - 1MHz.
Signal Range: Threshold nominally TTL level; max. input ±10V.
Min. Pulse Width: 50ns for Trigger and Gate modes; 50µs for Sweep mode; 20ms
for Tone mode.
Input Impedance: 10kW
Modulation In
Frequency Range: DC - 500kHz.
Signal Range: VCA: - approximately 1V pk-pk for 100% level change at maxi-
mum output. SCM: - approximately ± 1Vpk for max. output.
Input Impedance: Typically 1kW.
Sum In
Frequency Range: DC - 30MHz.
Signal Range: Approximately 2Vpk-pk input for 20Vpk-pk output.
Input Impedance: Typically 1kW.
Ref Clock In/Out
Set to Input: Input for an external 10MHz reference clock. TTL/CMOS
threshold level.
Set to Output: Buffered version of the internal 10MHz clock. Output levels
nominally 1V and 4V from 50W.
Set to Phase Lock: Used together with SYNC OUT on a master and the TRIG IN on
a slave to synchronise (phase lock) multiple instruments.
GENERAL
Display: 20 character x 4 row alphanumeric LCD.
Data Entry: Keyboard selection of mode, waveform etc.; value entry by nu-
meric keys or by rotary control.
Stored Settings: Up to 9 complete instrument set-ups may be stored and re-
called.
Size: 3U (130mm) height; half-rack (212mm) width; 335mm deep.
Weight: 4.1kg. (9lb.)
Power: 230V, 115V or 100V nominal 50/60Hz, adjustable internally; op-
erating range ±14% of nominal; 60VA max. Installation Cate-
gory II.
Operating Range: +5oC to 40oC, 20-80% RH.
Storage Range: -20oC to + 60oC.
Environmental: Indoor use at altitudes to 2km, Pollution Degree 1.
Safety: Complies with EN61010-1.
EMC: Complies with EN61326.
SUPPLIED ITEMS
AC Line Cable
User Manual: Printed Manual plus PDF multi-language manual on CD.
Waveform Software: Waveform Manager Plus for Windows on CD.
Driver Software: Drivers for LabWindows CVI and Labview on CD.
OPTIONS
Rack Mount: 19 inch rack mounting kit for one or two units.
GPIB Interface: Retro-fit interface board conforming to IEEE-488.2
Designed and built in Europe by:
Thurlby Thandar Instruments Ltd. operates a policy of continuous development and re-
serves the right to alter specifications without prior notice.
82100-1270 Iss. 2A
Thurlby Thandar Instruments Ltd.
Glebe Road, Huntingdon. Cambs. PE29 7DR United Kingdom (UK)
Tel: +44 (0)1480 412451 Fax: +44 (0)1480 450409
Email: info@aimtti.com Web: www.aimtti.com
AIM & THURLBY THANDAR INSTRUMENTS
TG4001
40MHz DDS Function / Arbitrary Generator
High resolution, high purity standard waveforms
Arbitrary waveforms up to 64K words and 100MS/s
A high performance 40MHz function generator
with arbitrary waveform capability up to 100MS/s
u
0.1mHz to 40MHz range,10 digits or 0.1mHz resolution.
u
1ppm stability and <10 ppm absolute accuracy for one year.
u
11 standard waveforms including sine, square, triangle,
haversine, ramp, pulse, sin(x)/x.
u
Low distortion, high spectral purity sine waves.
u
Pulse train pattern generation for up to 10 pulses.
u
Arbitrary waveforms of up to 64K points at up to 100MS/s.
u
Internal sweep, linear or logarithmic, phase continuous,
0.1mHz to 40MHz in one range.
u
Modulations modes of burst, gated and tone switching;
built-in trigger generator.
u
5mV to 20V pk-pk output from 50
W
; plus multi function
auxiliary output.
u
Storage for nine instrument set-ups in non-volatile memory.
u
Programmable via RS-232 or USB interfaces; GPIB optional.
Quick recall of settings
The TG4001 provides nine memories for
storing settings (plus one memory for au-
tomatically storing the settings at switch
off).
Because all parameters are controlled
electronically, the memories store the
complete set-up of the instrument.
Ease of use
The TG4001 is particularly easy to use.
All of the main information is clearly dis-
played on a backlit LCD with 4 rows of 20
characters. Sub menus are used for the
modulation modes and other complex
functions.
All parameters can be entered directly
from the numeric keypad. Alternatively
most parameters can be incremented or
decremented using the rotary encoder for
quasi-analogue control.
Frequency or period entry
The generator frequency can be set in
terms of either frequency or period.
Numeric entry can be floating point using
whatever units the operator prefers, or
can be done in exponent format.
Flexible amplitude entry
Amplitudes can be entered in terms of
peak to peak voltage, RMS voltage or
dBm.
The output amplitude can be set in terms
of either the voltage into a 50Wor 600W
termination, or in terms of the source EMF
(for a high impedance load).
40MHz sinewaves from a low cost DDS generator
The TG4001 provides high purity sine waves at up to 40MHz and square waves
at up to 50MHz. No other DDS generator offers this performance at this price.
The output amplifier has a bandwidth approaching 100MHz ensuring that wave-
form quality is excellent right up to the frequency limits.
Amplitude flatness is better than ±0.2dB to 1MHz and ±0.4db to 40MHz.
Low noise design ensures minimum waveform aberrations and
provides high waveform quality even at minimum output amplitude.
High speed arbitrary
waveforms
In addition to it's eleven 'standard' wave-
forms, the TG4001can generate arbitrary
waveforms of any length between 4 and
65,536 points at speeds of up to
100MS/s.
Up to four arbitrary waveforms can be
stored within the instrument.
Waveform Manager Plus software for
Windows is supplied for waveform cre-
ation and editing on a PC. Waveforms
are downloaded to the generator using
RS232, USB or GPIB.
Pulse train generation
As well as standard and arbitrary wave-
forms, The TG4001 can generate pulse
trains.
A pattern of up to 10 pulses can be
quickly defined with each pulse having its
own amplitude, width and delay. The
whole pulse train pattern can then be re-
played at a user defined repetition rate.
RS-232, USB or GPIB
interfaces
The TG4001 includes both an RS-232 in-
terface and USB interface as standard.
These interfaces can be used for remote
control of all of the instrument functions
and for storing instrument set-ups as well
as downloading arbitrary waveforms.
A GPIB (IEEE-488) interface is also
available as a retro-fittable option.
Synchronisation
The auxiliary output socket can provide
any one of sixe different Synchronisation
signals.
Waveform Sync provides square wave at
the frequency of the main output.
Burst Done produces a pulse coincident
with the last cycle of a burst.
Sweep Sync outputs a pulse at the start
of each sweep to synchronise an oscillo-
scope or recorder.
Sweep Marker provides an additional
output pulse for use as a marker in sweep
mode.
Phase Lock Out can be used to phase
lock two or more generators. Produces a
positive edge at the 0ophase point.
Trigger Out provides a replica of the trig-
ger signal which can originate from the
trigger input socket, the internal trig-
ger/gate generator, the manual trigger
key, or the bus interface.
Wide range sweep
All waveforms can be swept over their full
frequency range at a rate variable be-
tween 1 millisecond and 15 minutes.
Sweep can be linear or logarithmic, sin-
gle or continuous. Single sweeps can be
triggered from the front panel, the trigger
input, or the digital interfaces.
A sweep marker is provided that is adjust-
able whilst sweep is running. The mark-
ers can provide a visual indication of
frequency points on a ‘scope or chart re-
corder.
Amplitude modulation
and signal summing
Amplitude modulation (VCA) and sup-
pressed carrier modulation (SCM) are
available for all waveforms using the rear
panel modulation input.
A separate signal summing input is also
provided, allowing waveforms from an-
other signal source to be amplified and
summed with the main output.
Triggered & gated modes,
built-in trigger generator
All waveforms are available as a trig-
gered burst whereby each trigger edge
will produce one burst of the carrier. Start
and stop phase is fully variable.
Both Triggered and Gated modes can be
operated from the internal trigger genera-
tor, from an adjacent channel, an external
source or a key press or remote bus com-
mand.
The trigger generator is variable between
0.005 Hz and 100kHz, and the signal is
available as a separate output if required.
Tone switching & FSK
The TG4001 can provide triggered
switching between up to 16 frequencies
of standard or arbitrary waveforms.
Tone switching modes can be gated, trig-
gered or FSK using any trigger source.
Frequency Shift Keying provides phase
coherent switching between two selected
frequencies at a rate defined by the
switching signal source.
In tone switching mode the generator is
set to switch between a number of differ-
ent frequencies in response to a trigger
signal.
Waveform Manager Plus
Waveform Manager Plus (supplied) pro-
vides all of the features needed for the
creation, manipulation and management
of arbitary waveforms within a single Win-
dows-based program.
Choice of interfaces
The program supports RS232, USB and
GPIB interfaces for download and up-
load.
Upload from DSOs
The program can read several file formats
and supports waveform import via the
clipboard allowing it to accept waveform
files from most DSOs and digitisers.
A full suite of tools
Powerful mathematical functions are
combined with on-screen drawing tools
and clipboard functions to enable virtually
any waveform to be created either from
scratch, or from the editing of existing
waveforms.
Waveforms can be built in any number of
sections using any combination of the fol-
lowing: Standard waveforms, mathemati-
cal expressions, drawn waveforms,
uploaded waveforms, imported wave-
forms (using clipboard), existing stored
waveforms.
Waveforms can be viewed with variable
zoom and printed with annotation. Wave-
form management tools include Projects
and Libraries for professional organisa-
tion.
The full specifications for Waveform Man-
ager Plus are listed on the rear page.
part of a large family of waveform generators
Alternatives products:
If the TG4001 doesn't exactly meet your needs, TTi can offer
other generators with a different range of features.
Need greater arbitrary capability ?
then consider the TGA12101
The TGA12101 offers similar function generator facilities to
the TG4001 but includes a considerably more sophisticated
arbitrary capability.
This includes 1M words of waveform memory and full waveform
sequencing and looping to build highly complex waveforms from
individual waveform segments including sequence triggering.
Waveform storage is done via removeable CompactFlash cards
capable of holding up to 500 waveforms each.
An external ARB clock input allows arbitrary waveforms to be
generated in direct synchronism with any external signal of fixed
or varying frequency.
It also includes a GPIB interface as standard, in addition to
RS232 and USB.
The TGA12101 is part of a range of generators offering a choice
of sampling speed and up to four channels.
Don't need complex waveforms ?
then consider the TG2000
If you don't need arbitrary waveforms or complex modulation
facilities then the TG2000 may meet your needs.
The TG2000 is a 20MHz DDS function generator with USB and
RS232 interfaces at a very attractive price.
It offers high purity sinewaves and fast rise-time pulses along
with triangle and ramp waveforms.
Modulations include wide range phase-continuous sweep, gated
and tone switching modes, plus AM via an external input.
TGA12101 main advantages over TG4001
u1M point waveform memory
uUnlimited waveform storage via CF memory cards
uComplex waveform sequencing and looping capability
using up to 1024 waveform segments
uExternal ARB clock input
uGPIB (IEEE-488.2) interface standard
u2 and 4 channel versions available
More information:
Detailed product brochures are available for the TGA1200
series and for the TG2000.
These can be requested from TTi, or downloaded from our
web site.
A high performance 40MHz function generator
with arbitrary waveform capability up to 100MS/s
u
0.1mHz to 40MHz range,10 digits or 0.1mHz resolution.
u
1ppm stability and <10 ppm absolute accuracy for one year.
u
11 standard waveforms including sine, square, triangle,
haversine, ramp, pulse, sin(x)/x.
u
Low distortion, high spectral purity sine waves.
u
Pulse train pattern generation for up to 10 pulses.
u
Arbitrary waveforms of up to 64K points at up to 100MS/s.
u
Internal sweep, linear or logarithmic, phase continuous,
0.1mHz to 40MHz in one range.
u
Modulations modes of burst, gated and tone switching;
built-in trigger generator.
u
5mV to 20V pk-pk output from 50
W
; plus multi function
auxiliary output.
u
Storage for nine instrument set-ups in non-volatile memory.
u
Programmable via RS-232 or USB interfaces; GPIB optional.
Quick recall of settings
The TG4001 provides nine memories for
storing settings (plus one memory for au-
tomatically storing the settings at switch
off).
Because all parameters are controlled
electronically, the memories store the
complete set-up of the instrument.
Ease of use
The TG4001 is particularly easy to use.
All of the main information is clearly dis-
played on a backlit LCD with 4 rows of 20
characters. Sub menus are used for the
modulation modes and other complex
functions.
All parameters can be entered directly
from the numeric keypad. Alternatively
most parameters can be incremented or
decremented using the rotary encoder for
quasi-analogue control.
Frequency or period entry
The generator frequency can be set in
terms of either frequency or period.
Numeric entry can be floating point using
whatever units the operator prefers, or
can be done in exponent format.
Flexible amplitude entry
Amplitudes can be entered in terms of
peak to peak voltage, RMS voltage or
dBm.
The output amplitude can be set in terms
of either the voltage into a 50Wor 600W
termination, or in terms of the source EMF
(for a high impedance load).
40MHz sinewaves from a low cost DDS generator
The TG4001 provides high purity sine waves at up to 40MHz and square waves
at up to 50MHz. No other DDS generator offers this performance at this price.
The output amplifier has a bandwidth approaching 100MHz ensuring that wave-
form quality is excellent right up to the frequency limits.
Amplitude flatness is better than ±0.2dB to 1MHz and ±0.4db to 40MHz.
Low noise design ensures minimum waveform aberrations and
provides high waveform quality even at minimum output amplitude.
High speed arbitrary
waveforms
In addition to it's eleven 'standard' wave-
forms, the TG4001can generate arbitrary
waveforms of any length between 4 and
65,536 points at speeds of up to
100MS/s.
Up to four arbitrary waveforms can be
stored within the instrument.
Waveform Manager Plus software for
Windows is supplied for waveform cre-
ation and editing on a PC. Waveforms
are downloaded to the generator using
RS232, USB or GPIB.
Pulse train generation
As well as standard and arbitrary wave-
forms, The TG4001 can generate pulse
trains.
A pattern of up to 10 pulses can be
quickly defined with each pulse having its
own amplitude, width and delay. The
whole pulse train pattern can then be re-
played at a user defined repetition rate.
RS-232, USB or GPIB
interfaces
The TG4001 includes both an RS-232 in-
terface and USB interface as standard.
These interfaces can be used for remote
control of all of the instrument functions
and for storing instrument set-ups as well
as downloading arbitrary waveforms.
A GPIB (IEEE-488) interface is also
available as a retro-fittable option.
Synchronisation
The auxiliary output socket can provide
any one of sixe different Synchronisation
signals.
Waveform Sync provides square wave at
the frequency of the main output.
Burst Done produces a pulse coincident
with the last cycle of a burst.
Sweep Sync outputs a pulse at the start
of each sweep to synchronise an oscillo-
scope or recorder.
Sweep Marker provides an additional
output pulse for use as a marker in sweep
mode.
Phase Lock Out can be used to phase
lock two or more generators. Produces a
positive edge at the 0ophase point.
Trigger Out provides a replica of the trig-
ger signal which can originate from the
trigger input socket, the internal trig-
ger/gate generator, the manual trigger
key, or the bus interface.
Wide range sweep
All waveforms can be swept over their full
frequency range at a rate variable be-
tween 1 millisecond and 15 minutes.
Sweep can be linear or logarithmic, sin-
gle or continuous. Single sweeps can be
triggered from the front panel, the trigger
input, or the digital interfaces.
A sweep marker is provided that is adjust-
able whilst sweep is running. The mark-
ers can provide a visual indication of
frequency points on a ‘scope or chart re-
corder.
Amplitude modulation
and signal summing
Amplitude modulation (VCA) and sup-
pressed carrier modulation (SCM) are
available for all waveforms using the rear
panel modulation input.
A separate signal summing input is also
provided, allowing waveforms from an-
other signal source to be amplified and
summed with the main output.
Triggered & gated modes,
built-in trigger generator
All waveforms are available as a trig-
gered burst whereby each trigger edge
will produce one burst of the carrier. Start
and stop phase is fully variable.
Both Triggered and Gated modes can be
operated from the internal trigger genera-
tor, from an adjacent channel, an external
source or a key press or remote bus com-
mand.
The trigger generator is variable between
0.005 Hz and 100kHz, and the signal is
available as a separate output if required.
Tone switching & FSK
The TG4001 can provide triggered
switching between up to 16 frequencies
of standard or arbitrary waveforms.
Tone switching modes can be gated, trig-
gered or FSK using any trigger source.
Frequency Shift Keying provides phase
coherent switching between two selected
frequencies at a rate defined by the
switching signal source.
In tone switching mode the generator is
set to switch between a number of differ-
ent frequencies in response to a trigger
signal.
Waveform Manager Plus
Waveform Manager Plus (supplied) pro-
vides all of the features needed for the
creation, manipulation and management
of arbitary waveforms within a single Win-
dows-based program.
Choice of interfaces
The program supports RS232, USB and
GPIB interfaces for download and up-
load.
Upload from DSOs
The program can read several file formats
and supports waveform import via the
clipboard allowing it to accept waveform
files from most DSOs and digitisers.
A full suite of tools
Powerful mathematical functions are
combined with on-screen drawing tools
and clipboard functions to enable virtually
any waveform to be created either from
scratch, or from the editing of existing
waveforms.
Waveforms can be built in any number of
sections using any combination of the fol-
lowing: Standard waveforms, mathemati-
cal expressions, drawn waveforms,
uploaded waveforms, imported wave-
forms (using clipboard), existing stored
waveforms.
Waveforms can be viewed with variable
zoom and printed with annotation. Wave-
form management tools include Projects
and Libraries for professional organisa-
tion.
The full specifications for Waveform Man-
ager Plus are listed on the rear page.
part of a large family of waveform generators
Alternatives products:
If the TG4001 doesn't exactly meet your needs, TTi can offer
other generators with a different range of features.
Need greater arbitrary capability ?
then consider the TGA12101
The TGA12101 offers similar function generator facilities to
the TG4001 but includes a considerably more sophisticated
arbitrary capability.
This includes 1M words of waveform memory and full waveform
sequencing and looping to build highly complex waveforms from
individual waveform segments including sequence triggering.
Waveform storage is done via removeable CompactFlash cards
capable of holding up to 500 waveforms each.
An external ARB clock input allows arbitrary waveforms to be
generated in direct synchronism with any external signal of fixed
or varying frequency.
It also includes a GPIB interface as standard, in addition to
RS232 and USB.
The TGA12101 is part of a range of generators offering a choice
of sampling speed and up to four channels.
Don't need complex waveforms ?
then consider the TG2000
If you don't need arbitrary waveforms or complex modulation
facilities then the TG2000 may meet your needs.
The TG2000 is a 20MHz DDS function generator with USB and
RS232 interfaces at a very attractive price.
It offers high purity sinewaves and fast rise-time pulses along
with triangle and ramp waveforms.
Modulations include wide range phase-continuous sweep, gated
and tone switching modes, plus AM via an external input.
TGA12101 main advantages over TG4001
u1M point waveform memory
uUnlimited waveform storage via CF memory cards
uComplex waveform sequencing and looping capability
using up to 1024 waveform segments
uExternal ARB clock input
uGPIB (IEEE-488.2) interface standard
u2 and 4 channel versions available
More information:
Detailed product brochures are available for the TGA1200
series and for the TG2000.
These can be requested from TTi, or downloaded from our
web site.
A high performance 40MHz function generator
with arbitrary waveform capability up to 100MS/s
u
0.1mHz to 40MHz range,10 digits or 0.1mHz resolution.
u
1ppm stability and <10 ppm absolute accuracy for one year.
u
11 standard waveforms including sine, square, triangle,
haversine, ramp, pulse, sin(x)/x.
u
Low distortion, high spectral purity sine waves.
u
Pulse train pattern generation for up to 10 pulses.
u
Arbitrary waveforms of up to 64K points at up to 100MS/s.
u
Internal sweep, linear or logarithmic, phase continuous,
0.1mHz to 40MHz in one range.
u
Modulations modes of burst, gated and tone switching;
built-in trigger generator.
u
5mV to 20V pk-pk output from 50
W
; plus multi function
auxiliary output.
u
Storage for nine instrument set-ups in non-volatile memory.
u
Programmable via RS-232 or USB interfaces; GPIB optional.
Quick recall of settings
The TG4001 provides nine memories for
storing settings (plus one memory for au-
tomatically storing the settings at switch
off).
Because all parameters are controlled
electronically, the memories store the
complete set-up of the instrument.
Ease of use
The TG4001 is particularly easy to use.
All of the main information is clearly dis-
played on a backlit LCD with 4 rows of 20
characters. Sub menus are used for the
modulation modes and other complex
functions.
All parameters can be entered directly
from the numeric keypad. Alternatively
most parameters can be incremented or
decremented using the rotary encoder for
quasi-analogue control.
Frequency or period entry
The generator frequency can be set in
terms of either frequency or period.
Numeric entry can be floating point using
whatever units the operator prefers, or
can be done in exponent format.
Flexible amplitude entry
Amplitudes can be entered in terms of
peak to peak voltage, RMS voltage or
dBm.
The output amplitude can be set in terms
of either the voltage into a 50Wor 600W
termination, or in terms of the source EMF
(for a high impedance load).
40MHz sinewaves from a low cost DDS generator
The TG4001 provides high purity sine waves at up to 40MHz and square waves
at up to 50MHz. No other DDS generator offers this performance at this price.
The output amplifier has a bandwidth approaching 100MHz ensuring that wave-
form quality is excellent right up to the frequency limits.
Amplitude flatness is better than ±0.2dB to 1MHz and ±0.4db to 40MHz.
Low noise design ensures minimum waveform aberrations and
provides high waveform quality even at minimum output amplitude.
High speed arbitrary
waveforms
In addition to it's eleven 'standard' wave-
forms, the TG4001can generate arbitrary
waveforms of any length between 4 and
65,536 points at speeds of up to
100MS/s.
Up to four arbitrary waveforms can be
stored within the instrument.
Waveform Manager Plus software for
Windows is supplied for waveform cre-
ation and editing on a PC. Waveforms
are downloaded to the generator using
RS232, USB or GPIB.
Pulse train generation
As well as standard and arbitrary wave-
forms, The TG4001 can generate pulse
trains.
A pattern of up to 10 pulses can be
quickly defined with each pulse having its
own amplitude, width and delay. The
whole pulse train pattern can then be re-
played at a user defined repetition rate.
RS-232, USB or GPIB
interfaces
The TG4001 includes both an RS-232 in-
terface and USB interface as standard.
These interfaces can be used for remote
control of all of the instrument functions
and for storing instrument set-ups as well
as downloading arbitrary waveforms.
A GPIB (IEEE-488) interface is also
available as a retro-fittable option.
Synchronisation
The auxiliary output socket can provide
any one of sixe different Synchronisation
signals.
Waveform Sync provides square wave at
the frequency of the main output.
Burst Done produces a pulse coincident
with the last cycle of a burst.
Sweep Sync outputs a pulse at the start
of each sweep to synchronise an oscillo-
scope or recorder.
Sweep Marker provides an additional
output pulse for use as a marker in sweep
mode.
Phase Lock Out can be used to phase
lock two or more generators. Produces a
positive edge at the 0ophase point.
Trigger Out provides a replica of the trig-
ger signal which can originate from the
trigger input socket, the internal trig-
ger/gate generator, the manual trigger
key, or the bus interface.
Wide range sweep
All waveforms can be swept over their full
frequency range at a rate variable be-
tween 1 millisecond and 15 minutes.
Sweep can be linear or logarithmic, sin-
gle or continuous. Single sweeps can be
triggered from the front panel, the trigger
input, or the digital interfaces.
A sweep marker is provided that is adjust-
able whilst sweep is running. The mark-
ers can provide a visual indication of
frequency points on a ‘scope or chart re-
corder.
Amplitude modulation
and signal summing
Amplitude modulation (VCA) and sup-
pressed carrier modulation (SCM) are
available for all waveforms using the rear
panel modulation input.
A separate signal summing input is also
provided, allowing waveforms from an-
other signal source to be amplified and
summed with the main output.
Triggered & gated modes,
built-in trigger generator
All waveforms are available as a trig-
gered burst whereby each trigger edge
will produce one burst of the carrier. Start
and stop phase is fully variable.
Both Triggered and Gated modes can be
operated from the internal trigger genera-
tor, from an adjacent channel, an external
source or a key press or remote bus com-
mand.
The trigger generator is variable between
0.005 Hz and 100kHz, and the signal is
available as a separate output if required.
Tone switching & FSK
The TG4001 can provide triggered
switching between up to 16 frequencies
of standard or arbitrary waveforms.
Tone switching modes can be gated, trig-
gered or FSK using any trigger source.
Frequency Shift Keying provides phase
coherent switching between two selected
frequencies at a rate defined by the
switching signal source.
In tone switching mode the generator is
set to switch between a number of differ-
ent frequencies in response to a trigger
signal.
Waveform Manager Plus
Waveform Manager Plus (supplied) pro-
vides all of the features needed for the
creation, manipulation and management
of arbitary waveforms within a single Win-
dows-based program.
Choice of interfaces
The program supports RS232, USB and
GPIB interfaces for download and up-
load.
Upload from DSOs
The program can read several file formats
and supports waveform import via the
clipboard allowing it to accept waveform
files from most DSOs and digitisers.
A full suite of tools
Powerful mathematical functions are
combined with on-screen drawing tools
and clipboard functions to enable virtually
any waveform to be created either from
scratch, or from the editing of existing
waveforms.
Waveforms can be built in any number of
sections using any combination of the fol-
lowing: Standard waveforms, mathemati-
cal expressions, drawn waveforms,
uploaded waveforms, imported wave-
forms (using clipboard), existing stored
waveforms.
Waveforms can be viewed with variable
zoom and printed with annotation. Wave-
form management tools include Projects
and Libraries for professional organisa-
tion.
The full specifications for Waveform Man-
ager Plus are listed on the rear page.
part of a large family of waveform generators
Alternatives products:
If the TG4001 doesn't exactly meet your needs, TTi can offer
other generators with a different range of features.
Need greater arbitrary capability ?
then consider the TGA12101
The TGA12101 offers similar function generator facilities to
the TG4001 but includes a considerably more sophisticated
arbitrary capability.
This includes 1M words of waveform memory and full waveform
sequencing and looping to build highly complex waveforms from
individual waveform segments including sequence triggering.
Waveform storage is done via removeable CompactFlash cards
capable of holding up to 500 waveforms each.
An external ARB clock input allows arbitrary waveforms to be
generated in direct synchronism with any external signal of fixed
or varying frequency.
It also includes a GPIB interface as standard, in addition to
RS232 and USB.
The TGA12101 is part of a range of generators offering a choice
of sampling speed and up to four channels.
Don't need complex waveforms ?
then consider the TG2000
If you don't need arbitrary waveforms or complex modulation
facilities then the TG2000 may meet your needs.
The TG2000 is a 20MHz DDS function generator with USB and
RS232 interfaces at a very attractive price.
It offers high purity sinewaves and fast rise-time pulses along
with triangle and ramp waveforms.
Modulations include wide range phase-continuous sweep, gated
and tone switching modes, plus AM via an external input.
TGA12101 main advantages over TG4001
u1M point waveform memory
uUnlimited waveform storage via CF memory cards
uComplex waveform sequencing and looping capability
using up to 1024 waveform segments
uExternal ARB clock input
uGPIB (IEEE-488.2) interface standard
u2 and 4 channel versions available
More information:
Detailed product brochures are available for the TGA1200
series and for the TG2000.
These can be requested from TTi, or downloaded from our
web site.
Technical Specifications
WAVEFORMS
Standard Waveforms
Sine, square, triangle, DC, positive ramp, negative ramp, sin(x)/x, pulse, pulse train,
cosine, haversine and havercosine.
Frequency Accuracy: Better than 10 ppm for 1 year.
Temperature Stability: Typically <1 ppm/ oC
Sine, Cosine, Haversine, Havercosine
Range (Resolution): 0.1 mHz to 40 MHz. (0.1mHz or 10 digits)
Harmonic Distortion: <0.15% THD to 100kHz; <-60dBc to 20kHz, <-50dBc to
1MHz, <-40dBc to 10MHz, <-30dBc to 40MHz.
Non-harmonic Spurii: <-60dBc to 1MHz, + 6dB/octave 1MHz to 40MHz.
Square
Range (Resolution): 1 mHz to 50 MHz. (1mHz or 7 digits)
Rise and Fall Times: <8ns
Triangle
Range (Resolution): 0.1 mHz to 500 kHz. (0.1mHz or 7 digits)
Linearity Error: <0.1% to 30 kHz
Ramps and Sin(x)/x
Range (Resolution): 0.1 mHz to 100 kHz. (0.1mHz or 10 digits)
Linearity Error: <0.1% to 30 kHz (ramps)
Pulse and Pulse Train
Rise and Fall Times: <8ns
Period: Range 40ns to 100s. Resolution 7 digits or 10ns.
Delay and Width: Range -99.9s to + 99.99s. Resolution 0.001% period or 10ns.
Trains of up to 10 pulses may be specified, each having independently defined width,
delay and level. The baseline voltage is separately defined and the sequence repeti-
tion rate is set by the pulse train period.
ARBITRARY
Up to 4 user defined waveforms may be stored. Arbitrary waveforms can be defined
by downloading of waveform data via RS232 or USB (or GPIB if fitted)
Waveform Size: 65536 (64K) points maximum, 8 points minimum.
Vertical Resolution: 12 bits
Sample Clock Range: 100mHz to 100MHz. Resolution 7 digits or 0.1 mHz
Output Filter: Selectable between 40MHz Elliptic, 20MHz Bessel or none.
Noise Function:
Digital noise generated by a 35-bit linear feedback register clocked at 100MHz.
User’s external filter defines bandwidth and response.
ARBITRARY WAVEFORM CREATION / EDITING
Waveform Manager Plus software for Windows is supplied.
Full details of its capabilities are on our website or within the Waveform Manager
Plus brochure.
MODULATION MODES
Sweep
Capability provided for both standard and arbitrary waveforms. Linear or logarithmic
sweep, continuous or triggered, directions of up, down, up/down or down/up.
Sweep range of 1mHz to 40 MHz in one range, phase continuous with independent
setting of start/stop. Sweep time variable 1ms to 999s (3 digit resolution).
One Marker is provided, variable during the sweep.
The sweep may be free run or triggered from the following sources: Manually from
keyboard. Externally from TRIG IN input or remote interface.
Other Modulation Modes
Modes of Triggered Burst, Gated, and Tone Switching (gated, triggered, or FSK
switching from a list of up to 16 frequencies).
NOTE: The full specification of these modulation modes is provided on our website.
Trigger Generator
Internal source 0.005 Hz to 100kHz squarewave adjustable in 10us steps. 3 digit res-
olution. Available for external use from the SYNC OUT socket.
DIGITAL INTERFACES
Full remote control and waveform download facilities are available through the
RS-232 and USB interfaces. GPIB is available as an option.
RS-232: Variable Baud rate, 9600 Baud maximum. 9-pin D-connector.
(Also compatible with TTi ARC system)
USB: Conforming with USB 1.1
GPIB (Optional): Conforming with IEEE488.1 and IEEE488.2
OUTPUTS
Main Output
Output Impedance: 50W
Amplitude: 5mV to 20V pk-pk open circuit (2.5mV to 10V pk-pk into 50W).
Amplitude can be specified open circuit (Hi Z) or into an as-
sumed load of 50Wor 600W, in Vpk-pk, Vrms or dBm.
Amplitude Accuracy: Better than 2% ±1mV at 1kHz into 50W.
Amplitude Flatness: ±0.2dB to 1MHz; ±0.4dB to 40MHz.
DC Offset Range: ±10V. DC offset plus signal peak limited to ±10V from 50W.
DC Offset Accuracy: Typically within ±3% ±10mV, unattenuated.
Resolution: 3 digits or 1mV for both Amplitude and DC Offset.
Sync Out
Multifunction output user definable or automatically selected to be any of the following:
Waveform Sync, Burst Done, Sweep Sync, Sweep Marker, Phase Lock Out.
NOTE: The full specification of the Sync Out signal is provided on our website.
INPUTS
Trig In
Frequency Range: DC - 1MHz.
Signal Range: Threshold nominally TTL level; max. input ±10V.
Min. Pulse Width: 50ns for Trigger and Gate modes; 50µs for Sweep mode; 20ms
for Tone mode.
Input Impedance: 10kW
Modulation In
Frequency Range: DC - 500kHz.
Signal Range: VCA: - approximately 1V pk-pk for 100% level change at maxi-
mum output. SCM: - approximately ± 1Vpk for max. output.
Input Impedance: Typically 1kW.
Sum In
Frequency Range: DC - 30MHz.
Signal Range: Approximately 2Vpk-pk input for 20Vpk-pk output.
Input Impedance: Typically 1kW.
Ref Clock In/Out
Set to Input: Input for an external 10MHz reference clock. TTL/CMOS
threshold level.
Set to Output: Buffered version of the internal 10MHz clock. Output levels
nominally 1V and 4V from 50W.
Set to Phase Lock: Used together with SYNC OUT on a master and the TRIG IN on
a slave to synchronise (phase lock) multiple instruments.
GENERAL
Display: 20 character x 4 row alphanumeric LCD.
Data Entry: Keyboard selection of mode, waveform etc.; value entry by nu-
meric keys or by rotary control.
Stored Settings: Up to 9 complete instrument set-ups may be stored and re-
called.
Size: 3U (130mm) height; half-rack (212mm) width; 335mm deep.
Weight: 4.1kg. (9lb.)
Power: 230V, 115V or 100V nominal 50/60Hz, adjustable internally; op-
erating range ±14% of nominal; 60VA max. Installation Cate-
gory II.
Operating Range: +5oC to 40oC, 20-80% RH.
Storage Range: -20oC to + 60oC.
Environmental: Indoor use at altitudes to 2km, Pollution Degree 1.
Safety: Complies with EN61010-1.
EMC: Complies with EN61326.
SUPPLIED ITEMS
AC Line Cable
User Manual: Printed Manual plus PDF multi-language manual on CD.
Waveform Software: Waveform Manager Plus for Windows on CD.
Driver Software: Drivers for LabWindows CVI and Labview on CD.
OPTIONS
Rack Mount: 19 inch rack mounting kit for one or two units.
GPIB Interface: Retro-fit interface board conforming to IEEE-488.2
Designed and built in Europe by:
Thurlby Thandar Instruments Ltd. operates a policy of continuous development and re-
serves the right to alter specifications without prior notice.
82100-1270 Iss. 2A
Thurlby Thandar Instruments Ltd.
Glebe Road, Huntingdon. Cambs. PE29 7DR United Kingdom (UK)
Tel: +44 (0)1480 412451 Fax: +44 (0)1480 450409
Email: info@aimtti.com Web: www.aimtti.com
AIM & THURLBY THANDAR INSTRUMENTS
TG4001
40MHz DDS Function / Arbitrary Generator
High resolution, high purity standard waveforms
Arbitrary waveforms up to 64K words and 100MS/s
Thurlby Thandar Instruments Ltd.
Glebe Road, Huntingdon, Cambridgeshire PE29 7DR England (United Kingdom)
Tel: +44 (0)1480 412451 Fax: +44 (0)1480 450409
Email: info@aimtti.com Web: www.aimtti.com
Designed and built in Europe by:
Company name and product brands
Thurlby Thandar Instruments Ltd. (TTi) is one of Europe’s leading
manufacturers of test and measurement instruments.
Products have been sold under two brand names:
TTi and Aim.
In the future, however, the full product range will be branded Aim-TTi.
This changeover will be gradual and many products will continue to carry
the TTi or Aim brands for some time to come.
Web Addresses (URLs)
The preferred URL for obtaining information concerning Aim-TTi products
is:
www.aimtti.com (international customers)
Customers in the UK should use the URL:
www.aimtti.co.uk
Customers in the USA should use the URL:
www.aimtti.us
Note that previous URLs such as www.tti-test.com will continue to operate
for the time being.
Product Summary
Laboratory Power Supplies
Bench and system power supplies from 30 watts up to
1200 watts using linear, mixed-mode and PowerFlex
regulation technologies.
Waveform Generators
Analog and digital (DDS) function generators, true
arbitrary generators, arbitrary/function generators and
pulse generators.
Precision Measurement Instruments
Benchtop DMMs, frequency counters, component
measurement instruments (LCR), electronic dc loads,
current probes.
RF and EMC Test Equipment
Spectrum analyzers, signal generators, frequency counters,
power meters, emc measurement instruments.
