Technical Specifications
Designed and built in Europe by:
Thurlby Thandar Instruments Ltd. operates a policy of continuous development and
reserves the right to alter specifications without prior notice.
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
TG300 Series
3MHz function and sweep/function generators
simultaneous display of frequency &litude
FREQUENCY
Frequency Range: 0.03Hz to 3MHz in 7 overlapping decade
ranges with fine adjustment by a vernier.
Vernier Range: 1000:1 on each range.
OPERATING MODES
Specifications apply for the top decade of each frequency range and maximum out-
put into 50
W
termination.
SINE
Distortion: <0.5% on 300, 3k and 30k ranges; <1% on
3, 30 and 300k ranges; all harmonics >25dB
below fundamental on 3M range.
Amplitude Flatness: ±0.2dB to 200kHz; ±2dB to 3MHz.
TRIANGLE
Linearity: Better than 99% to 200kHz
SQUARE WAVE
Rise/Fall Times: <100ns
Mark - Space Ratio: 1:1 ± 1% to 100kHz
DC
Range: ±10V unterminated
SYMMETRY
Symmetry Range: Variable typically 1:9 to 9:1 (on top decade of
each range), frequency divided by 10.
METER FUNCTIONS (generator mode)
Frequency: Auto-ranging reciprocal measurement giving
4 digit resolution for frequencies down to
1Hz; maximum resolution is 0.001Hz.
Accuracy ±1 digit for 0.2Hz to 3MHz.
Below 0.2Hz accuracy is ±1% of range full
scale (symmetry off).
Amplitude: Display shows peak-to-peak amplitude or rms
value. Display corrected for attenuator set-
ting. 3-digit resolution, accuracy typically 5%
of range. Clipping indicator on display.
DC Offset: 3-digit resolution; accuracy typically ±2% of
setting ±1 digit. Display corrected for attenu-
ator setting. Clipping indicator on display.
OUTPUTS
MAIN - 50 Ohm
Amplitide 2mV to 20V peak-peak open circuit (1mV to
10V peak-peak into 50W) in four switch-
selectable ranges with 20dB vernier control
within each range
Attenuator Ranges: 0dB, -20dB, -40dB, -60dB
DC Offset Range: ±10V from 50W. DC offset plus signal peak
limited to ±10V (±5V into 50W). DC offset
plus waveform attenuated proportionally by
the attenuator.
MAIN - 600 Ohm Alternative output socket offering the same
facilities as the 50Wsocket.
AUX OUT 0 to 5V TTL/CMOS logic levels capable of
driving 2 standard TTL loads. Frequency,
symmetry and phase as main outputs
SWEEP OUT 3V ramp from 600W(TG330 only)
EXTERNAL COUNTER (TG320 and TG330 only)
Frequency Ranges: 5Hz to 25MHz and 20MHz to 120MHz,
fully autoranging to maximum resolution
Input Sensitivity: 50mV rms (sinewave)
Input Impedance: 1MW/25pF
Measurement Time: Selectable 0.5s or 5s
Resolution: 6 digits in 0.5s; 7 digits in 5s
Accuracy: ±1 digit ± timebase accuracy
Timebase Accuracy: ±10ppm initial error; ±5ppm/year ageing rate;
typically less then 0.5ppm/oC. Adjustment
point for closed-case recalibration
SWEEP MODES
EXTERNAL
Input Impedance: 10kW
Input Sensitivity: 0 to 3V for 1000:1 sweep
Max. Input Voltage: ±10V
Sweep Linearity: Better than 1%
Max. Slew Rate: 0.1V/us
INTERNAL (TG330 only)
Sweep Range: 1000:1 within each range.
Sweep Rate: Adjustable, typically 20ms to 20 secs.
Sweep Mode: Linear or logarithmic. Sweep start and stop
frequencies displayed at the press of a but-
ton.
Sweep Output: 3V ramp from 600W.
AMPLITUDE MODULATION (TG330 only)
Depth: Variable 0 to 100% typical.
Frequency: 400Hz (internal). DC to 20kHz (external).
External Sensitivity: Approximately 2V peak-to-peak for 50% mod-
ulation. Input impedance 40kW.
GENERAL
CASING
Moulded ABS case with tilt stand.
POWER REQUIREMENTS
Input Voltage: 220 to 240 volts AC nominal 50/60Hz or
110 to 120 volts AC nominal 50/60Hz by rear
panel adjustment. Installation category II.
Power Consumption: 25VA max.
TEMPERATURE & ENVIRONMENTAL
Operating Temp.
Range: +5oC to +40oC, 20% to 80% RH.
Storage Temp.
Range: -10oC to +65oC
Environmental: Indoor use at altitudes up to 2000m.
Pollution degree 2.
SIZE 260(W) x 88(H) x 235(D)mm (10.2 x 3.4 x
9.2"), excluding handle and feet.
WEIGHT 1.9kg (4.2lb)
SAFETY Complies with EN61010-1.
EMC Complies with EN61326.
seven digit 120MHz external frequency counter
internal sweep generator, amplitude modulation
82100-0095 Iss. 2A
TG315, TG320, TG330 function generators the highest waveform quality
the widest range of facilities
TG330 in swept frequency mode.
Dual digital displays for
precision & convenience
The TG300 series generators incorporate
a large dual-section digital display.
Unlike competitive products the display
provides a readout not just of frequency,
but of amplitude or offset simultaneously.
Fast and accurate frequency
measurement
Auto-ranging reciprocal measurement
gives 4-digit resolution with rapid update
rightdowntoHzlevels. Accuracyiswithin
±1 digit.
To maintain a fast update at sub-Hz
frequencies, the measurement mode is
changed resulting in 3-digit resolution and
reduced accuracy.
However, when compared to the normal
fixed gate-time meters used in other prod-
ucts it provides both higher accuracy and
fasterdisplayupdateacrossthewholefre-
quency range.
RMS or peak to peak
amplitude display
Theoutputleveldisplaycanbeselectedto
show any of three values:
1. The peak to peak amplitude
2. The RMS amplitude
3. The DC offset
RMS values are calculated correctly for
each waveform shape.
The decimal point and units are changed
automatically resulting in a display of the
true amplitude regardless of the attenu-
ator setting.
A display indicator warns against illegal
combinations of offset and amplitude
setting that would create clipping in the
output stage.
A state-of-the-art
instrument
The function generator is one of the most
versatile pieces of test & measurement in-
strumentation available.
It can generate a variety of precision
waveshapes over a range of frequencies
from mHz to MHz. It can provide a wide
range of controlled amplitudes from a
low-impedance source, and maintain con-
stantamplitudeasthefrequencyisvaried.
Voltage control of frequency enables a
source of swept frequency to be gener-
ated for frequency response testing.
Modulation can also be added.
The TG300 series represents the state-
of-the-art in low-cost analogue function
generators.
u
0.03Hz to 3MHz frequency range
u
Simultaneous display of frequency & amplitude
u
External 7 digit 120MHz frequency counter (not TG315)
u
Very high waveform quality at all frequencies & levels
u
2mV to 20V pk-pk from 50 or 600
u
Auxiliary TTL/CMOS output
u
Variable symmetry with constant frequency
u
Variable DC offset with zero detent
u
1000:1 frequency change by vernier or sweep voltage
u
Precision internal linear or logarithmic sweep (TG330)
u
Internal or external amplitude modulation (TG330)
External counter with
seven digit resolution
The TG320 and TG330 have an external
counter mode which utilises the full width
of the display to provide up to seven digits
of resolution.
The frequency range is from 5Hz up to
120MHz in two ranges, and the input sen-
sitivity is better than 50mV rms.
Ameasurementperiodof0.5or5seconds
can be selected. A reciprocal counting
measurement system is used which en-
sures high resolution regardless of input
frequency.
Thus, for example, mains frequency can
be measured to a resolution of better than
1mHz.
Accuracy is better than 10ppm (0.001%)
and an external adjustment point allows
for closed case re-calibration.
Exceptional waveform quality
The TG300 series provides very high
waveform quality under all conditions.
That means low sinewave distortion, low
aberration triangle waves and fast-edged
square waves with low overshoot.
Unlike many competitive products good
waveform quality is maintained through-
out the frequency range and at low output
levels.
Variable symmetry for pulse
and ramp waveforms
The TG300 series provides bi-directional
variable symmetry from 1:9 to 9:1. Unlike
some products, frequency is independent
of symmetry setting.
Wide range level control
The TG300 series provides a main output
with a maximum emf of 20V pk-pk from a
50Ωor 600Ωsource.
An amplitude vernier with a range of 20dB
is combined with two switched attenua-
tors of -20dB and -40dB to provide levels
down to 2mV pk-pk unterminated.
Variable DC offset of ±10V is available via
acentredetentcontrol. Anauxiliaryoutput
provides a fixed 0V to +5V level suitable
for driving both TTL and CMOS loads.
Wide sweep range
Each range can be swept by at least
1000:1 either manually or via the external
sweep input.
Advanced internal sweep
The TG330 incorporates a versatile inter-
nal sweep generator capable of providing
linear or logarithmic frequency sweeps.
Start and stop frequencies can be set with
precision using the digital display. Sweep
ranges of over 1000:1 are possible.
The sweep rate is adjustable over a wide
range with good setability between limits
of 20ms and 20s.
A sweep output socket is provided for use
withanoscilloscopeor an X-Yrecorder.Un-
like many other sweep generators, the
sweep ramp is triangular which gives a su-
periordisplaywhenusinganoscilloscopeto
display swept frequencies.
Amplitude modulation for
extra versatility
TheTG330also incorporatescomprehen-
sive AM facilities.
Themodulationcanbe external orinternal
(via a 400Hz internal generator) with
modulation levels fully variable between
0% and 100%.
A choice of three models
TG315
The TG315 includes dual digital display
of frequency and amplitude, along with
the basic generator functions of sine,
square & triangle waveforms, variable
DC offset, variable symmetry and an ex-
ternal sweep input.
TG320
The TG320 adds an external frequency
counter with up to 7 digits of resolution
covering 5Hz to 120MHz.
TG330
The TG330 has all the features of the
TG320 plus an internal sweep generator
with linear or log sweep, variable sweep
rate and a sweep output socket.
It also offers internal or external ampli-
tude modulation.
Built for the bench or rack
All three models are housed in the TTi
mid-size bench instrument case.
This heavy duty ABS case features an in-
tegral tilt stand and is 2U high for optional
rack mounting using an RM50 rack mount
kit.
Part of a wider range
TTi offers a wide choice of function gener-
ators both analogue and digital, from a
simple2MHzmodeluptoahighlysophisti-
cated 40MHz unit.
The following two models share the case
style of the TG300 series while offering
features sets above and below them.
TG210
The TG210 is a 2MHz generator offering
the same high waveform quality and
featuresasthe TG315,butwithoutthe dig-
ital display.
TG550
The TG550 is a 5MHz generator offering a
similar feature set to the TG330, but with
the added benefit of digital frequency
locking.
TG315, TG320, TG330 function generators the highest waveform quality
the widest range of facilities
TG330 in swept frequency mode.
Dual digital displays for
precision & convenience
The TG300 series generators incorporate
a large dual-section digital display.
Unlike competitive products the display
provides a readout not just of frequency,
but of amplitude or offset simultaneously.
Fast and accurate frequency
measurement
Auto-ranging reciprocal measurement
gives 4-digit resolution with rapid update
rightdowntoHzlevels. Accuracyiswithin
±1 digit.
To maintain a fast update at sub-Hz
frequencies, the measurement mode is
changed resulting in 3-digit resolution and
reduced accuracy.
However, when compared to the normal
fixed gate-time meters used in other prod-
ucts it provides both higher accuracy and
fasterdisplayupdateacrossthewholefre-
quency range.
RMS or peak to peak
amplitude display
Theoutputleveldisplaycanbeselectedto
show any of three values:
1. The peak to peak amplitude
2. The RMS amplitude
3. The DC offset
RMS values are calculated correctly for
each waveform shape.
The decimal point and units are changed
automatically resulting in a display of the
true amplitude regardless of the attenu-
ator setting.
A display indicator warns against illegal
combinations of offset and amplitude
setting that would create clipping in the
output stage.
A state-of-the-art
instrument
The function generator is one of the most
versatile pieces of test & measurement in-
strumentation available.
It can generate a variety of precision
waveshapes over a range of frequencies
from mHz to MHz. It can provide a wide
range of controlled amplitudes from a
low-impedance source, and maintain con-
stantamplitudeasthefrequencyisvaried.
Voltage control of frequency enables a
source of swept frequency to be gener-
ated for frequency response testing.
Modulation can also be added.
The TG300 series represents the state-
of-the-art in low-cost analogue function
generators.
u
0.03Hz to 3MHz frequency range
u
Simultaneous display of frequency & amplitude
u
External 7 digit 120MHz frequency counter (not TG315)
u
Very high waveform quality at all frequencies & levels
u
2mV to 20V pk-pk from 50 or 600
u
Auxiliary TTL/CMOS output
u
Variable symmetry with constant frequency
u
Variable DC offset with zero detent
u
1000:1 frequency change by vernier or sweep voltage
u
Precision internal linear or logarithmic sweep (TG330)
u
Internal or external amplitude modulation (TG330)
External counter with
seven digit resolution
The TG320 and TG330 have an external
counter mode which utilises the full width
of the display to provide up to seven digits
of resolution.
The frequency range is from 5Hz up to
120MHz in two ranges, and the input sen-
sitivity is better than 50mV rms.
Ameasurementperiodof0.5or5seconds
can be selected. A reciprocal counting
measurement system is used which en-
sures high resolution regardless of input
frequency.
Thus, for example, mains frequency can
be measured to a resolution of better than
1mHz.
Accuracy is better than 10ppm (0.001%)
and an external adjustment point allows
for closed case re-calibration.
Exceptional waveform quality
The TG300 series provides very high
waveform quality under all conditions.
That means low sinewave distortion, low
aberration triangle waves and fast-edged
square waves with low overshoot.
Unlike many competitive products good
waveform quality is maintained through-
out the frequency range and at low output
levels.
Variable symmetry for pulse
and ramp waveforms
The TG300 series provides bi-directional
variable symmetry from 1:9 to 9:1. Unlike
some products, frequency is independent
of symmetry setting.
Wide range level control
The TG300 series provides a main output
with a maximum emf of 20V pk-pk from a
50Ωor 600Ωsource.
An amplitude vernier with a range of 20dB
is combined with two switched attenua-
tors of -20dB and -40dB to provide levels
down to 2mV pk-pk unterminated.
Variable DC offset of ±10V is available via
acentredetentcontrol. Anauxiliaryoutput
provides a fixed 0V to +5V level suitable
for driving both TTL and CMOS loads.
Wide sweep range
Each range can be swept by at least
1000:1 either manually or via the external
sweep input.
Advanced internal sweep
The TG330 incorporates a versatile inter-
nal sweep generator capable of providing
linear or logarithmic frequency sweeps.
Start and stop frequencies can be set with
precision using the digital display. Sweep
ranges of over 1000:1 are possible.
The sweep rate is adjustable over a wide
range with good setability between limits
of 20ms and 20s.
A sweep output socket is provided for use
withanoscilloscopeor an X-Yrecorder.Un-
like many other sweep generators, the
sweep ramp is triangular which gives a su-
periordisplaywhenusinganoscilloscopeto
display swept frequencies.
Amplitude modulation for
extra versatility
TheTG330also incorporatescomprehen-
sive AM facilities.
Themodulationcanbe external orinternal
(via a 400Hz internal generator) with
modulation levels fully variable between
0% and 100%.
A choice of three models
TG315
The TG315 includes dual digital display
of frequency and amplitude, along with
the basic generator functions of sine,
square & triangle waveforms, variable
DC offset, variable symmetry and an ex-
ternal sweep input.
TG320
The TG320 adds an external frequency
counter with up to 7 digits of resolution
covering 5Hz to 120MHz.
TG330
The TG330 has all the features of the
TG320 plus an internal sweep generator
with linear or log sweep, variable sweep
rate and a sweep output socket.
It also offers internal or external ampli-
tude modulation.
Built for the bench or rack
All three models are housed in the TTi
mid-size bench instrument case.
This heavy duty ABS case features an in-
tegral tilt stand and is 2U high for optional
rack mounting using an RM50 rack mount
kit.
Part of a wider range
TTi offers a wide choice of function gener-
ators both analogue and digital, from a
simple2MHzmodeluptoahighlysophisti-
cated 40MHz unit.
The following two models share the case
style of the TG300 series while offering
features sets above and below them.
TG210
The TG210 is a 2MHz generator offering
the same high waveform quality and
featuresasthe TG315,butwithoutthe dig-
ital display.
TG550
The TG550 is a 5MHz generator offering a
similar feature set to the TG330, but with
the added benefit of digital frequency
locking.
Technical Specifications
Designed and built in Europe by:
Thurlby Thandar Instruments Ltd. operates a policy of continuous development and
reserves the right to alter specifications without prior notice.
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
TG300 Series
3MHz function and sweep/function generators
simultaneous display of frequency &litude
FREQUENCY
Frequency Range: 0.03Hz to 3MHz in 7 overlapping decade
ranges with fine adjustment by a vernier.
Vernier Range: 1000:1 on each range.
OPERATING MODES
Specifications apply for the top decade of each frequency range and maximum out-
put into 50
W
termination.
SINE
Distortion: <0.5% on 300, 3k and 30k ranges; <1% on
3, 30 and 300k ranges; all harmonics >25dB
below fundamental on 3M range.
Amplitude Flatness: ±0.2dB to 200kHz; ±2dB to 3MHz.
TRIANGLE
Linearity: Better than 99% to 200kHz
SQUARE WAVE
Rise/Fall Times: <100ns
Mark - Space Ratio: 1:1 ± 1% to 100kHz
DC
Range: ±10V unterminated
SYMMETRY
Symmetry Range: Variable typically 1:9 to 9:1 (on top decade of
each range), frequency divided by 10.
METER FUNCTIONS (generator mode)
Frequency: Auto-ranging reciprocal measurement giving
4 digit resolution for frequencies down to
1Hz; maximum resolution is 0.001Hz.
Accuracy ±1 digit for 0.2Hz to 3MHz.
Below 0.2Hz accuracy is ±1% of range full
scale (symmetry off).
Amplitude: Display shows peak-to-peak amplitude or rms
value. Display corrected for attenuator set-
ting. 3-digit resolution, accuracy typically 5%
of range. Clipping indicator on display.
DC Offset: 3-digit resolution; accuracy typically ±2% of
setting ±1 digit. Display corrected for attenu-
ator setting. Clipping indicator on display.
OUTPUTS
MAIN - 50 Ohm
Amplitide 2mV to 20V peak-peak open circuit (1mV to
10V peak-peak into 50W) in four switch-
selectable ranges with 20dB vernier control
within each range
Attenuator Ranges: 0dB, -20dB, -40dB, -60dB
DC Offset Range: ±10V from 50W. DC offset plus signal peak
limited to ±10V (±5V into 50W). DC offset
plus waveform attenuated proportionally by
the attenuator.
MAIN - 600 Ohm Alternative output socket offering the same
facilities as the 50Wsocket.
AUX OUT 0 to 5V TTL/CMOS logic levels capable of
driving 2 standard TTL loads. Frequency,
symmetry and phase as main outputs
SWEEP OUT 3V ramp from 600W(TG330 only)
EXTERNAL COUNTER (TG320 and TG330 only)
Frequency Ranges: 5Hz to 25MHz and 20MHz to 120MHz,
fully autoranging to maximum resolution
Input Sensitivity: 50mV rms (sinewave)
Input Impedance: 1MW/25pF
Measurement Time: Selectable 0.5s or 5s
Resolution: 6 digits in 0.5s; 7 digits in 5s
Accuracy: ±1 digit ± timebase accuracy
Timebase Accuracy: ±10ppm initial error; ±5ppm/year ageing rate;
typically less then 0.5ppm/oC. Adjustment
point for closed-case recalibration
SWEEP MODES
EXTERNAL
Input Impedance: 10kW
Input Sensitivity: 0 to 3V for 1000:1 sweep
Max. Input Voltage: ±10V
Sweep Linearity: Better than 1%
Max. Slew Rate: 0.1V/us
INTERNAL (TG330 only)
Sweep Range: 1000:1 within each range.
Sweep Rate: Adjustable, typically 20ms to 20 secs.
Sweep Mode: Linear or logarithmic. Sweep start and stop
frequencies displayed at the press of a but-
ton.
Sweep Output: 3V ramp from 600W.
AMPLITUDE MODULATION (TG330 only)
Depth: Variable 0 to 100% typical.
Frequency: 400Hz (internal). DC to 20kHz (external).
External Sensitivity: Approximately 2V peak-to-peak for 50% mod-
ulation. Input impedance 40kW.
GENERAL
CASING
Moulded ABS case with tilt stand.
POWER REQUIREMENTS
Input Voltage: 220 to 240 volts AC nominal 50/60Hz or
110 to 120 volts AC nominal 50/60Hz by rear
panel adjustment. Installation category II.
Power Consumption: 25VA max.
TEMPERATURE & ENVIRONMENTAL
Operating Temp.
Range: +5oC to +40oC, 20% to 80% RH.
Storage Temp.
Range: -10oC to +65oC
Environmental: Indoor use at altitudes up to 2000m.
Pollution degree 2.
SIZE 260(W) x 88(H) x 235(D)mm (10.2 x 3.4 x
9.2"), excluding handle and feet.
WEIGHT 1.9kg (4.2lb)
SAFETY Complies with EN61010-1.
EMC Complies with EN61326.
seven digit 120MHz external frequency counter
internal sweep generator, amplitude modulation
82100-0095 Iss. 2A
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.
