TGA12104 - AIM-TTI INSTRUMENTS

AIM & THURLBY THANDAR INSTRUMENTS

TGA1200 Series

Single and Multi-channel Universal ARB Generators

1, 2 or 4 independent or inter-linked channels

40MS/s or 100MS/s, up to 1M words per channel

Function generator and pulse generator capabilities

Universal generators

The TGA1200 series combine a true variable

clock arbitrary generator with a high perfor-

mance DDS function generator and pulse gen-

erator in a single instrument.

Wide model range

The TGA1200 series comprises 6 models:

TGA1241 - 40MS/s single channel waveform

generator in 3U half rack size case.

TGA1242 - 40MS/s two channel waveform

generator in 3U case.

TGA1244 - 40MS/s four channel waveform

generator in 3U case.

TGA12101 - 100MS/s single channel wave-

form generator in 3U half rack size case.

TGA12102 - 100MS/s two channel waveform

generator in 3U case.

TGA12104 - 100MS/s four channel waveform

generator in 3U case.

On multi-channel units each channel can be

operated fully independently, or multiple chan-

nels can be linked using simple or complex re-

lationships.

TGA1200 Series - Main Features

1, 2 or 4 waveform channels, independent or linked.

40MS/s or 100MS/s 12-bit arbitrary waveform capability

using true variable clock architecture.

64K or 1M point waveform memory per channel.

16MHz or 40MHz function generators using DDS*.

Multiple ‘standard’ waveforms including sine, square,

triangle, haversine, ramp, pulse and sin(x)/x.

Pulse train pattern generation for up to 10 pulses.

Complex waveform sequencing and looping capability

using up to 1024 waveform segments.

Wide range sweep, AM, tone switching, signal summing.

* DDS = direct digital synthesis

Inter-channel triggering, summing and phase control.

Multiple generators can be easily phase locked.

External ARB clock input (TGA1210x units only).

Waveform creation/editing tools built-in; sophisticated

external Windows based software included.

Built-in trigger generator, gated and triggered burst

modes.

Tone switching facilitates precision DTMF generation.

Unlimited waveform storage using CF memory cards

(TGA1210x units only).

GPIB (IEEE-488.2), RS-232 and USB interfaces

(TGA124x units have GPIB and RS-232 only).

A true arbitrary generator

The TGA1200 series are highly sophisticated

12-bit arbitrary generators capable of recreat-

ing virtually any waveform.

Variable clock architecture

True variable clock architecture is used with

clock speeds between 0.1Hz and 100MHz

(40MHz on TGA124x units). This architecture

avoids the clock jitter associated with DDS ar-

bitrary generators and permits waveform link-

ing, looping and sequencing.

(See page five for

more about variable clock architecture)

Waveforms may be defined with up to 4096

vertical points and from 8 to 1M horizontal

points (4 to 64K points on TGA124x units).

Arbitrary waveforms may be replayed at a

specified waveform frequency, period or sam-

ple rate. An external sample clock can also be

used on TGA1210x units.

On TGA124x units, up to 100 user-defined

waveforms can be stored within the instru-

ment’s non-volatile memory.

On TGA1210x units waveform storage is on

removeable Compact Flash memory cards

and is therefore effectively unlimited.

Function generator

Each channel can operate as a full DDS func-

tion generator. High quality sine, cosine,

haversine, havercosine and square waves are

available between 1mHz and 16MHz (TGA124x)

or 40MHz (TGA1210x).

Triangle, ramp and sine(x)/x waveforms are

available from 0.1mHz up to 100kHz.

Pulse generator

Each channel can generate not just pulses but

complex 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 replayed at a user defined

repetition rate.

Where variable rise time pulses are required,

the full arbitrary function can be used.

TGA1200 series universal ARB waveform generators

Waveform creation and

editing

Waveformcreationandeditingfeaturesarein-

corporated within the instrument. These in-

clude waveform insert, point edit, line draw,

amplitude adjust and invert.

A wide range of standard waveforms is avail-

ableforinsertionwithinanarbitrarywaveform.

Sections of existing arbitrary waveforms can

also be inserted.

For more sophisticated waveform creation

and editing, Waveform Manager Plus soft-

ware for Windows is provided (see further on

in this brochure for more detail).

Waveforms created on a PC can be down-

loaded to the instrument via the digital inter-

faces (or memory card where fitted).

Memory card storage

TGA1210x units incorporate a CompactFlash

memory card giving effectively unlimited stor-

age for waveforms and set-ups.

Waveform data can be transferred directly

from a PC to the memory card using the USB

card reader/writer supplied.

GPIB, RS-232, USB

The TGA1200 series incorporates both

RS-232 and GPIB (IEEE-488) interfaces as

standard. TGA1210x units also have a USB

interface.

These can be used for loading arbitrary wave-

forms and for remote control of all the instru-

ment functions.

Waveform sequencing

The variable clock architecture of the

TGA1200 series enables waveforms to be se-

quenced. Up to 1024 arbitrary waveforms

may be linked in a sequence (16 waveforms

on TGA124x).

Each waveform

can have a loop

count of up to

32,768 and the

whole sequence

can be run contin-

uously or re-

peated more than

a million times.

For multi-channel models, waveforms on dif-

ferent channels can be ‘daisy chained’ and

looped.

By summing the channel outputs, multiple

segmentsfrom multiple channels can be used

to create highly complex waveforms.

40MS/s or 100MS/s - one, two or four channels

Simple waveform sequence

Multi-channel operation

(TGA1242/1244/12102/12104)

Multi-channel phase locking

Any number of channels can be phase locked

with offsets defined to a resolution of 0.1o(or

360o/waveform points for arbitrary wave-

forms).

For applications

requiring more

thanfourchannels,

multiple genera-

tors can be phase

locked.

TGA1210x models can be phase locked to an

external clock and offer phase continuous fre-

quency changes.

N.B.

All models including the TGA1241 and

TGA12101 have the facility for phase

synchonising to another similar generator.

Multi-channel summing

WaveformSummingsums thewaveform from

any channel into the next channel.

Alternatively any

number of chan-

nels can be

summed with an

external signal.

This permits com-

plex modulations

to be created such

as noise superim-

position.

Inter-channel triggering and

modulation

Because any channel can be triggered by the

previousornext channel,waveformsondiffer-

ent channels can be ‘daisy chained’ and

looped. By summing the channel outputs,

many segments from different channels can

be used to generate the final waveform.

A channel can be used to AM modulate or

SCM modulate another channel.

Digital modulation

Inter-channel

modulation and

summing allows

the simulation of

various telecom

digital modulation

systems.

Arbitrary waveform

summed with noise

IQ Modulation signals

(Quadrature Amplitude Modulation)

Generating more voltage

For applications requiring more than 20V

pk-pk emf, an external wideband amplifier is

available. The WA301 can provide up to 30V

pk-pk from 50W.

Wide range sweep

All waveforms can be swept over their full fre-

quency range at a rate variable between milli-

seconds and minutes.

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.

Multiple channels can be swept simulta-

neously.

Amplitude modulation

Amplitude Modulation and Suppressed Car-

rierModulationareavailableforallwaveforms.

Any channel can

be used to modu-

late another chan-

nel.

Alternatively all

channels can be

modulated simul-

taneously via the

modulation input.

Built-in trigger generator

All waveforms are available as a triggered

burst whereby each trigger edge will produce

oneburstofthecarrier. Startandstopphaseis

fully variable.

Both Triggered and Gated modes can be op-

eratedfromtheinternal triggergenerator,from

an adjacent channel, an external source or a

key press or remote command.

The trigger generator signal is available as a

separate output if required.

Tone switching

The TGA1200 series can provide triggered

switching between up to 16 frequencies of

standard or arbitrary waveforms.

Tone switching

modes can be

gated, triggered or

FSKusinganytrig-

ger source.

By summing two

channels together

it is possible to

generate precise

DTMF test signals.

Fast and easy to use

All of the main information is clearly displayed

onabacklit80characterLCD. Eight'soft'keys

enable fast data editing.

Parameters can be entered directly from the nu-

meric keypad or changed with the spin wheel.

Onthe2and4 channelmodels, aCopy Chan-

nel key enables similar setups to be created

across multiple channels with ease.

Amplitude modulation

Simple tone switching

Waveform Manager Plus - included with all TGA1200 series generators

Full waveform building tools including standard waveforms, mathemati-

cal expressions, and freehand drawing.

Operates under Windows 95, 98, Millennium, NT, 2000 and XP.

Supports vertical resolutions up to 16 bits (65536 points).

Supports horizontal resolutions to over one million points.

Provides waveform import and export via clipboard functions.

Directly supports waveform upload from some Tektronix DSOs.

Supports download and upload via RS-232, GPIB and USB.

Advanced waveform creation, editing and management software

WAVEFORM BUILDING TOOLS

TOOLKIT

Waveforms can be built in any number of sec-

tions using any combination of the following:

Standard waveforms, mathematical expressions,

drawn waveforms, uploaded waveforms, im-

ported waveforms (using clipboard), existing

stored waveforms.

Note: Waveform section limits can be defined via move-

able cursors which can be dragged or positioned numeri-

cally.

STANDARD WAVEFORMS

The following waveforms are available directly

from the Waveforms dialogue box: Sine, square,

triangle, pulse, ramp, sinc [sin(x)/x], gaussian,

exponent, noise.

Note: The mathematical expression for any standard

waveform can be examined by opening the expression

editor window.

EXPRESSION EDITOR FUNCTIONS

The following mathematical operators are avail-

able within the expression editor: Add, subtract,

multiply, divide, xn, sin, cos, arcsin, arccos, abs,

log10, loge, en, square root, floor, ceiling, random,

pulse, in conjunction with constants and wave-

forms.

Note: The expressions used for each section of a wave-

form are retained and can be displayed in a drop-down

window.

EXPRESSION LIBRARIES

The mathematical expressions used for wave-

form creation can be stored in libraries. A de-

fault library is created for each project which

includes a number of useful examples including

waveshapes and modulations.

WAVEFORM DRAWING FUNCTIONS

Waveforms can be created or edited using free-

hand drawing and/or point to point line drawing.

SMOOTH

Waveforms can be smoothed using a running

average filter. Start and end points can be spec-

ified as well as the number of points to average.

WAVEFORM EDITING/CONVERSION

TOOLKIT

All of the waveform building tools previously

mentioned can be used to edit existing wave-

forms. In addition waveforms can be manipu-

lated directly using the following functions:

RESIZE WAVEFORM

Allows a waveform to be resized horizontally to

any length between 4 and 1M horizontal points.

Note: The vertical resolution of a waveform is automati-

cally adjusted when it is downloaded to the generator.

Thus an 8-bit waveform from a DSO will be expanded to

12-bits if it is downloaded to a 12-bit generator (and vice

versa).

WAVEFORM MATHEMATICS

The Waveforms Maths function allows wave-

forms to be combined and manipulated inde-

pendently of the expression editor. Waveforms

can be scaled, offset, added, subtracted or multi-

plied using dialogue boxes.

Note: Waveforms can also be combined and manipulated

within the expression editor giving access to the full range

of mathematical functions.

INPUT/OUTPUT FUNCTIONS

FILE FORMATS

Waveforms can be read from and saved as any

of the following formats: WFM(binary), NRM (nor-

malised data in ASCII), WAV (WaveCAD), ASC

(WaveCAD), DSF (Tektronix DSO).

WAVEFORM DOWNLOAD/UPLOAD

Waveforms can be downloaded/uploaded to/from

TTi arbitrary generators (or certain Tektronix

DSOs) using either an RS232 or GPIB

(IEEE-488) interface or, for the TGA1210x, a

USB interface.

CLIPBOARD FUNCTIONS

Waveforms can be imported to the program and

exported from the program using the Windows

Clipboard.

Waveform import uses the “Text” clipboard for-

mat (i.e. numeric lists). This enables waveforms

to be imported from spreadsheets such as Excel

and from mathematical programs such as

MathCad. Values are automatically normalised

and re-scaled.

Waveform export creates multiple clipboard for-

mats of Text (normalised numeric values be-

tween ±1), Bitmap (as per on-screen display) and

Picture (metafile retaining waveform vector prop-

erties).

Note: Pictures or bitmaps can be pasted into programs

such as Word for documentation purposes.

DISPLAY AREA AND PRINTING

Multiple waveform windows can be open simulta-

neously. Each window is fully scaleable. Vari-

able zoom is provided with panning from a

“navigator” sub-window.

Waveform section limits can be defined via

moveable cursors which can be dragged or posi-

tioned numerically.

Waveforms can be printed with automatic anno-

tation and scaling.

MANAGEMENT AND UTILITIES

PROJECTS

To maintain good housekeeping, waveforms can

be organised into “projects” with separate direc-

tory structures. Each project maintains its own li-

brary of expressions. Waveforms and

expressions can be imported and exported from

other projects.

INSTRUMENT SETUP

The instrument setup screen enables options for

the waveform generator to be set from the pro-

gram. Examples of settable options are output

amplitude, clock frequency and trigger source.

HELP

Full on-screen Help is available with a hyper

linked contents table.

Specifications apply at 18oCto28

oC after 30 minutes warm up, at maximum

output into 50Ω.

ARBITRARY WAVEFORMS

Waveform Parameters

TGA124x TGA1210x

Waveform Memory: 64k points/ch 1M points/ch

Waveform Length: 4 to 65,536 points 8 to 1,048,576 points

Vertical Resolution: 12 bits (4096 levels)

Sample Clock Rate: 0.1Hz to 40MHz 0.1Hz to 100MHz (1)

Clock Resolution: 4 digits 8 digits

Clock Accuracy: <10 ppm for 1 year (± 1 digit of setting)

Clock Temp. Stability: Typically <1 ppm/oC

Waveform Storage: 256K Words

Non-volatile RAM CF Memory Cards

(32MB to 1GB size)

Max. Waveforms: 100 500 per card

Note 1: TGA1210x generators can also use an external sample clock, DC to

50MHz.

Waveform Creation and Editing

All Models

Internal: Basic arbitrary waveform creation and editing tools are built

into the instrument. Arbitrary waveforms can be built-up us-

ing insertion of standard waveforms between points, point by

point value setting, and straight line drawing between points.

External: All TGA1200 series units are supplied with Waveform Man-

ager Plus software for Windows which provides full waveform

creation, editing and management. Waveforms are trans-

ferred using the digital interfaces or memory card.

Sequence

A number of waveforms can be linked and played as a sequence. Each

waveform can have a loop count of up to 32,768. A sequence of waveforms

can be looped up to 1,048,575 times or run continuously.

TGA124x TGA1210x

Max. Waveforms in a Sequence: 16 1024

Output Filter

The output filter type is selectable. This can be used to optimise a particular

waveshape.

TGA124x TGA1210x

Filter Choice: 16MHz Elliptic, 10MHz Elliptic,

10MHz Bessel or None 40MHz Elliptic,

20MHz Bessel or None

STANDARD WAVEFORMS

Sine, square, triangle, DC, positive ramp, negative ramp, sin(x)/x, pulse,

pulse train, cosine, haversine and havercosine.

All Waveforms

TGA124x TGA1210x

Frequency Accuracy: <10 ppm for 1 year

Temp. Stability: Typically <1 ppm/oC

Output Level: 2.5mV to 10Vpp into 50Ω(5mV to 20Vpp e.m.f.)

Sine, Cosine, Haversine, Havercosine

TGA124x TGA1210x

Frequency Range: 0·1mHz to 16 MHz 0·1mHz to 40 MHz

Freq. Resolution: 0·1mHz or 7 digits 0·1mHz or 10 digits

Harmonic Distortion: <0.1% THD to 100kHz;

<–65dBc to 20kHz,

<–50dBc to 300kHz,

<-35dBc to 10MHz

<-30dBc to 16MHz

<0.15% THD to 100kHz;

<-60dBc to 20kHz,

<-50dBc to 1MHz,

<-40dBc to 10MHz,

<-30dBc to 40MHz.

Nonharmonic Spurii: <–65dBc to 1MHz,

<–65dBc + 6dB/octave

1MHz to 16MHz

<-60dBc to 1MHz,

<-60dBc + 6dB/octave

1MHz to 40MHz.

Square

TGA124x TGA1210x

Frequency Range: 1mHz to 16 MHz 1mHz to 50 MHz

Freq. Resolution: 1mHz or 4 digits 1mHz or 8 digits

Freq. Accuracy: ± 1 digit of setting

Rise and Fall Times: <25ns <8ns

Technical Specifications

Variable-clock ARB architecture

Direct replay for jitter-free waveforms

All TGA1200 series units generate arbitrary waveforms using a variable

clock architecture rather than DDS.

This ensures that every point in the waveform is replayed exactly as it was

defined, the rate of replay being set by the clock frequency.

By contrast, a DDS arbitrary generator uses a fixed clock frequency and

varies the replay rate by duplicating or omitting waveform points. Unless

there is an integer relationship between the desired replay rate, clock fre-

quency and waveform length, each "cycle" of the waveform will differ from

the previous one, resulting in jitter.

Sequencing for increased waveform length

Variable clock architecture also allows sequencing and looping. The 64K

words of waveform memory per channel provided in TGA124X units can

beusedtocreatearbitrarywaveformswithmanymorethan65536points.

Many real-world waveforms include repetitive elements. By using a seg-

mentofthememorytorecreateeachrepeatingelement,thewaveformcan

be constructed by a "sequence" in which the individual elements are re-

played in a defined order and with a defined number of repetitions (loop

count). Inthis way waveforms can becreatedwithamuch greater number

of points than the waveform memory size.

DDSarbitrarygeneratorscannotdothisandthe effectivewaveformlength

is limited to the actual waveform memory size.

TGA12100 - the next step forward

TTidesigned thenewTGA1210X generators baseduponextensive expe-

rience of actual user requirements. So in addition to raising the maximum

clockspeedfrom 40MHzto 100MHz,anumberofotherimportantfeatures

havebeenaddedthatmeettheneedsofparticulargroupsofcustomers.

1M word waveform memory

Some users require very long arbitrary waveforms. TGA1210X units in-

corporate 1,048,576 words of waveform memory per channel. Thus even

long and complex waveforms which have no repetitive elements can be

accommodated.

CompactFlash memory card storage provides effectively unlimited stor-

age for waveforms. Greater sequencing capability (up to 1024 segments)

gives even more flexibility in waveform reconstruction.

External ARB clock input

Some applications require that the arbitrary waveform is clocked in direct

synchronism with an external signal.

TGA1210Xunits incorporatean externalARBclock inputthatcan beused

to clock any number of channels at any rate from DC up to 50MHz.

ItshouldbenotedthatDDSarbitrarygeneratorshavenosuchcapability.

System clock architecture

All TGA1200 units incorporate a separate clock generator for each chan-

nel allowing completely independent operation.

On the TGA1242 and TGA1244, channel synchronisation is achieved by

defining one channel as the Master channel and driving the other chan-

nel(s) from its clock.

The TGA12102 and TGA12104 provide a further option by incorporating

an additional independent system clock generator. The system clock cre-

atesaninternalversion of the external ARB clock signal and can generate

frequencies between 0.1Hz and 50MHz.

When the system clock (or external ARB clock) is used to drive multiple

channels,phaseskewissignificantlyreducedandfrequencychangescan

be made without any discontinuities.

Thesystemclockoutputisalsoavailableontherearpaneltodriveexternal

circuitry or the external ARB input of another generator when more than

four channels are required.

Auxiliary sinewave output

The output of the master clock generator is also available as a fixed level

sinewave. When not being used as the master for channel synchronisa-

tion, this can be used as another independent variable frequency genera-

toroverthe range0.1Hz to50MHz,providingtheequivalentofthreeorfive

channel outputs.

Specifications continued

Sweep

Frequency sweep capability is provided for both standard and arbitrary wave-

forms. Arbitrary waveforms are expanded or condensed to exactly 4096 points

and DDS techniques are used to perform the sweep.

TGA124x TGA1210x

Carrier Waveforms: All standard and arbitrary except pulse, pulse

train and sequence.

Sweep Mode: Linear or logarithmic, triggered or continuous.

Sweep Direction: Up, down, up/down or down/up.

Sweep Range: From 1mHz to 16 MHz

in one range. From 1mHz to 40 MHz

in one range.

Sweep Time: 30ms to 999s 1ms to 999s

Marker: Variable during sweep.

Sweep Trigger Source: The sweep may be free run or triggered from

the following: Manually from keyboard.

Externally from TRIG IN input or remote interface.

Sweep Hold: Sweep can be held / restarted by the HOLD key.

Multi Channel Sweep (multi-channel units only)

Any number of channels may be swept simultaneously. Amplitude, Offset and

Waveform can be set independently for each channel. For TGA124x units the

sweep parameters will be the same for all channels. For TGA1210x units the

sweep parameters can be set independently for each channel.

Tone Switching

Capability provided for both standard and arbitrary waveforms. Arbitrary wave-

forms are expanded or condensed to exactly 4096 points and DDS techniques

are used to allow instantaneous frequency switching.

TGA124x TGA1210x

Carrier Waveforms: All except pulse, pulse train and sequence.

Frequency List: Up to 16 frequencies

from 1mHz to 10MHz. Up to 16 frequencies

from 1mHz to 40MHz.

Trigger Repetition

Rate: 0.005Hz to 100kHz internal. dc to 1MHz exter-

nal. Usable repetition rate and waveform fre-

quency depend on the tone switching mode.

Trigger Source: Internal from keyboard, previous channel, next

channel or trigger generator. External from

TRIG IN or remote interface.

Tone Switching Modes: Gated, Triggered or FSK (see below).

Tone Switching Modes:

Gated: The tone is output while the trigger signal is true and stopped, at the

end of the current waveform cycle, while the trigger signal is false. The next

tone is output when the trigger signal is true again.

Triggered: The tone is output when the trigger signal goes true and the next

tone is output, at the end of the current waveform cycle, when the trigger signal

goes true again.

FSK: The tone is output when the trigger signal goes true and the next tone is

output, immediately, when the trigger signal goes true again. Using 2 channels

withtheiroutputssummedtogetheritispossibletogenerateDTMFtestsignals.

Trigger Generator

Internal source 0.005 Hz to 100kHz square wave adjustable in 10us steps. 3

digit resolution. Available for external use from any SYNC OUT socket.

OUTPUTS

Main Output - One for each channel

TGA124x TGA1210x

Output Impedance: 50Ω

Amplitude Range: 5mV to 20Vpp open circuit (2.5mV to 10Vpp

into 50Ω). Amplitude can be specified open cir-

cuit (hi Z) or into an assumed load of 50Ωor

600Ωin Vpk-pk, Vrms or dBm.

Amplitude Accuracy: 2% ±1mV at 1kHz into 50Ω.

Amplitude Flatness: ±0.2dB to 200 kHz;

±1dB to 10 MHz;

±2.5dB to 16 MHz.

±0.2dB to 1 MHz;

±0.4dB to 40 MHz;

DC Offset Range: ±10V from 50Ω.

Offset plus signal peak limited to ±10V.

DC Offset Accuracy: Typically 3% ±10mV, unattenuated.

Resolution: 3 digits or 1mV for both Amplitude and DC Offset.

Auxiliary Sine Output

TGA124x TGA12101 TGA12102/104

N/A N/A Nominal 1Vp-p sinewave, frequency set by sys-

tem clock, frequency 0.1Hz to 50MHz.

Pulse and Pulse Train

TGA124x TGA1210x

Period Range: 100ns to 100s 40ns to 100s

Period Resolution: 4 digits 8 digits

Period Accuracy: ± 1 digit of setting

Delay Range: -99·99s to + 99·99s

Delay Resolution: 0·002% of period

(25ns minimum) 0.001% of period

(10ns minimum)

Width Range: 25ns to + 99·99s 10ns to + 99·99s

Width Resolution: 0·002% of period

(25ns minimum) 0.001% of period

(10ns minimum)

Rise and Fall Times: <25ns <8ns

Note that the pulse width and absolute value of the delay may not exceed the

pulse period at any time.

Pulse trains of up to 10 pulses may be specified, each pulse having independ-

ently defined width, delay and level. The baseline voltage is separately defined

and the sequence repetition rate is set by the pulse train period.

Triangle

TGA124x TGA1210x

Frequency Range: 0.1mHz to 100kHz 0.1mHz to 500kHz

Freq. Resolution: 0.1mHz or 7 digits 0.1mHz or 10 digits

Linearity Error: <0.1% to 30 kHz

Ramps and Sin(x)/x

TGA124x TGA1210x

Frequency Range: 0.1mHz to 100kHz 0.1mHz to 500kHz

Freq. Resolution: 0.1mHz or 7 digits 0.1mHz or 10 digits

Linearity Error: <0.1% to 30 kHz

Noise Function (TGA1210x only):

Digital noise generated by a 35-bit linear feedback register clocked at 100MHz.

User’s external filter defines bandwidth and response.

OPERATING MODES

Continuous

Waveform runs continuously.

Triggered Burst

Eachactiveedgeofthetriggersignalwillproduceoneburstofthewaveform.

TGA124x TGA1210x

Carrier Waveforms: All standard and arbitrary waveforms

Max. Carrier

Frequency: 1MHz or the maximum

for the selected wave-

form if lower.

40Msamples/s for ARB

and Sequence.

2.5MHz or the maxi-

mum for the selected

waveform if lower.

100Msamples/s for ARB

and Sequence.

Number of Cycles: 1 to 1,048,575

Trigger Repetition: 0.005Hz to 100kHz internal, dc to 1MHz external.

Trigger Signal

Source: Internal from keyboard, previous channel, next

channel or trigger generator.

External from TRIG IN or remote interface.

Trigger Start/Stop

Phase: ± 360osettable with 0.1oresolution, subject to

waveform frequency and type.

Gated

Waveform will run while the Gate signal is true and stop while false.

TGA124x TGA1210x

Carrier Waveforms: All standard and arbitrary waveforms

Max. Carrier

Frequency: 1MHz or the maximum

for the selected wave-

form if lower.

40Msamples/s for ARB

and Sequence.

2.5MHz or the maxi-

mum for the selected

waveform if lower.

100Msamples/s for ARB

and Sequence.

Number of Cycles: 1 to 1,048,575

Trigger Repetition: 0.005Hz to 100kHz internal, dc to 1MHz external.

Gate Signal Source: Internal from keyboard, previous channel, next

channel or trigger generator.

External from TRIG IN or remote interface.

Gate Start/Stop

Phase: ± 360osettable with 0.1oresolution, subject to

waveform frequency and type.

Specifications continued

Ref Clock In/Out

TGA124x TGA1210x

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 50Ω.

Set to Phase Lock: Used together with SYNC OUT on a master and

TRIG IN on a slave to synchronise (phase lock)

two separate generators.

ARB Clock In/Out

TGA1210x generators can use an external signal as the arbitrary waveform

clock. The TGA12102 and TGA12104 also include an internal system clock

generator (in addition to the individual channel clock generators). The output of

thissystem clock can be made available to drive external circuitry or the input of

another generator.

TGA124x TGA12101 TGA12102/4

Set to Input: N/A Input for an external Arb clock.

TTL/CMOS threshold level.

Set to Output: N/A N/A Outputs System

Clock, logic level

<0.8V to >3V

Frequency Range: N/A DC to 50MHz.

Max. Input Voltage: N/A +5V, -1V.

MULTI-CHANNEL OPERATION

Channel Relationships:

Thechannelsofa multi-channel unit can be operated entirely independently, as

if they were separate generators. The "copy" key allows the settings of any

channel to be instantly copied to another when required.

Alternatively, inter-channel relationships of modulation, summing, triggering, or

phase locking can be set up.

System Clock: (TGA12102/12104 only)

The TGA12102/12104 units incorporate an additional frequency generator

which can be used as a clock source for multi-channel arbitrary waveforms and

as an auxiliary output.

TGA124x TGA12101 TGA12102/104

Frequency Range: N/A N/A DC to 50MHz.

Frequency Resolution: N/A N/A 0·1Hz

Theoutputofthesystemclockisavailableasa1voltpk-pksinewaveattheAux-

iliary Sine Out socket, and as a logic level squarewave at the Ext. ARB In/Out

socket.

When not being used as a clock source for multi-channel arbitrary waveforms,

thesystem clockprovidesan independentfixedamplitude sine orsquareoutput

which is additional to the two or four main channel outputs.

Inter-channel Modulation:

The waveform from any channel may be used to Amplitude Modulate (AM) or

Suppressed Carrier Modulate (SCM) the next channel. Alternatively any num-

berofchannelsmaybeModulated(AMorSCM)withthesignalattheMODULA-

TION input socket.

TGA1242/1244/12102/12104

Carrier frequency: Entire range for selected waveform.

Carrier waveforms: All standard and arbitrary waveforms.

Modulation Types: AM: Double sideband with carrier.

SCM: Double sideband suppressed carrier.

Modulation source: Internal from the previous channel. External

from Modulation input socket. The external

modulation signal may be applied to any num-

ber of channels simultaneously.

Frequency Range: DC to >100 kHz.

Internal AM Depth: 0% to 105%.

Internal AM Resolution: 1%.

Carrier Suppression

(SCM): > 40dB.

External Modulation

Signal Range: VCA: Approximately 1V pk-pk for 100% level

change at maximum output.

SCM: Approximately ± 1Vpk for max. output.

Multi Channel Sweep

Any number of channels may be swept simultaneously. Amplitude, Offset and

Waveform can be set independently for each channel.

For TGA124x units the sweep parameters will be the same for all channels.

For TGA1210x units the sweep parameters can be set independently for each

channel.

ARB Clock Out

See ARB clock In/Out within INPUTS section.

Sync Out - One for each channel

Multifunction output user definable or automatically selected to be any of the

following:

TGA124x TGA1210x

Waveform Sync:

(all waveforms) Square wave with 50% duty cycle at the main

waveform frequency, or pulse coincident with the

first few points of an arbitrary waveform.

Position Markers:

(Arbitrary only) Any point(s) on the waveform may have

associated marker bit(s) set high or low.

Burst Done: Produces a pulse coincident with the last cycle of

a burst.

Sequence Sync: Produces a pulse coincident with the end of a

waveform sequence.

Trigger: Selects the current trigger signal. Useful for syn-

chronizing burst or gated signals.

Sweep Sync: Outputs a pulse at the start of sweep to

synchronize an oscilloscope or recorder.

Sweep Marker: N/A Additional pulse for use

as sweep marker.

Phase Lock Out: Used to phase lock two generators. Produces a

positive edge at the 0° phase point.

Signal Level: Logic levels of <0.8V

and >3V for all outputs. Logic levels of <0.8V and

>3V for all outputs except

Sweep Sync.

Signal Level:

(Sweep Sync. only) N/A 3 level waveform - as

above but plus narrow

+1V pulse at marker.

Cursor/Marker Out (TGA124x units only)

Adjustableoutput pulse foruseas a markerinsweep mode or asacursor in ar-

bitrary waveform editing mode. Can be used to modulate the Z axis of an oscil-

loscope or be displayed on a second ‘scope channel.

TGA124x TGA1210x

Signal Level: Adjustable from nominally 2V

to 14V, normal or inverted; ad-

justable width as a cursor.

N/A

Output Impedance: 600Ωtypical N/A

INPUTS

Trig In

TGA124x TGA1210x

Frequency Range: DC to 1MHz.

Signal Range: Threshold nominally

TTL level;

maximum input ±10V.

Threshold adjustable

over ±5V range;

maximum input ±10V.

Min. Pulse Width: 50ns, for Trigger/Gate; 50us for Sweep mode.

Polarity: Selectable as high/rising edge or low/falling

edge.

Input Impedance: Typically 10 kΩ.

Modulation In

TGA124x TGA1210x

Frequency Range: DC to 100kHz. DC to 100kHz.

VCA Signal Range: Approximately 1V pk-pk for 100% level change

at maximum output.

SCM Signal Range: Approximately ± 1Vpk for maximum output.

Input Impedance: Typically 1 kΩ.

Sum In

TGA124x TGA12101 TGA12102/4

Frequency Range: DC to 8MHz. DC to 30MHz. DC to 16MHz

Signal Range: Approximately 2 Vpk-pk input for 20Vpk-pk out-

put.

Input Impedance: Typically 1 kΩ.

Hold

Holdsanarbitrarywaveformatitscurrentposition.ATTLlowlevelorswitchclo-

sure causes the waveform to stop at the current position and wait until a TTL

high level or switch opening which allows the waveform to continue. The front

panel MAN HOLD key or remote command may also be used to control the

Hold function. While held the front panel MAN TRIG key or remote command

maybeusedtoreturnthewaveformtothestart.TheHoldinputmaybeenabled

independently for each channel. Input impedance is10kΩ.

Designed and built in Europe by:

82100-1220 Iss. 4A

Thurlby Thandar Instruments Ltd.

Glebe Road, Huntingdon. Cambs. PE29 7DR U.K.

Tel: +44 (0)1480 412451 Fax: +44 (0)1480 450409

Email: info@aimtti.com Web: www.aimtti.com

Specifications continued

Thurlby Thandar Instruments Ltd. operates a policy of continuous development and

reserves the right to alter specifications without prior notice.

INTERFACES

Full remote control and waveform transfer is available through the digital in-

terfaces.

TGA124x TGA1210x

IEEE488: Conforms with IEEE488.1 and IEEE488.2

RS232: Variable Baud rate,

9600 Baud maximum.

Variable Baud rate,

38400 Baud maximum.

USB: N/A Conforms with USB1.1

GENERAL

TGA124x TGA1210x

Display: 20 character x 4 row alphanumeric LCD.

Data Entry: Keyboard selection of mode, wave etc., value entry

direct by numeric keys or by rotary control.

Memory Card: N/A Removable card slot con-

forming to the Compact

Flash standard. Sizes

32MB to 1GB.

Waveform Storage:

(non volatile)

Up to 100 waveforms

within 256K words.

Up to 500 waveforms per

CF card.

Stored Settings: Up to 9 full set-ups. Up to 500 full set-ups per

CF card.

MECHANICAL, POWER, COMPLIANCE

TGA: 1241 12101 1242 12102 1244 12104

Width 212mm (½ rack) 350mm

Height: 130mm (3U) 130mm (3U)

Length: 335mm 335mm

Weight: 4.1 kg 4.2kg 7.1kg 5.9kg 7.2kg 6.0kg

Power: A B ACAC

A = 230V, 115V or 100V ±14%, 50/60Hz, adjustable internally

B = 230V, 115V or 100V ±14%, 50/60/400Hz, adjustable internally

C =100V to 230V ±14%, 50/60/400Hz, universal input

Maximum VA: 40 60 75 150 100 150

Temperature: Operating Range +5°C to 40°C, 20-80% RH

Storage Range -20°C to + 60°C.

Environmental: Indoor use at altitudes to 2000m, Pollution Degree 2

Safety: Complies with EN61010-1.

EMC: Complies with EN61326.

SUPPLIED ITEMS

TGA124x TGA1210x

IEC Mains Lead,

RS-232 Lead,

Printed Manual (partly

multi-language),

Multi-language manual on CD,

Waveform Manager Plus software.

IEC Mains Lead, RS-232 Lead,

Printed Manual,

Multi-language manual on CD,

Waveform Manager Plus software,

USB drivers for Windows on CD,

Compact Flash memory card,

Compact Flash card reader/writer

(USB connection to PC).

Instrument Drivers

Labview and LabWindows CVI drivers are either supplied with the instrument

or are available for download without charge from the TTi website.

Options:

19 inch rack mounting kit for one multi-channel generator.

19 inch rack mounting kit for one or two single channel generators.

Products illustrated within this brochure

Front Cover: TGA12104, TGA1242, TGA12101. Inside Page: TGA12104

Inter-channel Analogue Summing:

Waveform Summing sums the waveform from any channel into the next

channel.

Alternatively any number of channels may be summed with the signal at the

SUM input socket.

TGA1242/1244 TGA12102/104

Carrier frequency: Entire range for selected waveform.

Carrier waveforms: All standard and arbitrary waveforms.

Sum source: Internal from the previous channel. External

from SUM IN socket.

Frequency Range: DC to >8MHz. DC to >16MHz.

External Signal Range: Approx. 5Vpk-pk input

for 20Vpk-pk output.

Approx. 2Vpk-pk input

for 20Vpk-pk output.

Input Impedance: Typically 1 kW.

Inter-channel Phase locking:

Two or more channels may be phase locked together. Each locked channel

may be assigned a phase angle relative to the other locked channels. With

one channel assigned as the Master and other channels as Slaves, a fre-

quency change on the master will be repeated on each slave thus allowing

multiphase waveforms at the same frequency to be easily generated.

The signals from the REF IN/OUT socket and the SYNC OUT socket can be

used to phase lock two instruments where more than 4 channels are re-

quired.

Different condition apply to Standard waveforms generated using DDS tech-

niques (sine, cosine, haversine, havercosine, triangle, ramps and sinex/x),

and those generated using variable clock arbitrary waveform techniques

which include square, pulse and pulse train.

Arbitrary waveforms and waveform sequences may be phase locked to the

Master channel, but certain constraints apply to waveform lengths and clock

frequency ratios.

On the TGA12102/12104, arbitrary waveforms and waveform sequences

can alternatively be clocked from a separate internal clock generator (Sys-

tem clock), or from an external clock input (external ARB clock).

When using these clock sources, the restrictions that apply when using the

Master channel as the clock source are eliminated. In addition, frequency

changes require no settling time to re-establish phase locking, and thus

phase continuous frequency changing or sweeping is possible.

TGA1242/1244 TGA12102/104

Phase Resolution:

(DDS waveforms)

0.1 degree.

Phase Resolution:

(Non DDS waveforms)

0.1 degree or 360 degrees/number of points.

Clock Source: Master Channel. Master Channel, System

Clock or Ext. ARB clock

Phase Error: <±10ns. <±5ns (master channel)

<±2ns (external ARB or

system clock).

N.B. DDS waveforms are Sine, Cosine, Haversine, Havercosine, Triangle,

Ramps and Sin(x)/x. Non DDS waveforms are Pulse, Pulse Train, and all

Arbitrary waveforms.

Inter-channel Triggering:

Any channel can be triggered by the previous or next channel.

The previous/next connections can be used to ’daisy chain’ a trigger signal

from a ‘start’ channel, through a number of channels in the ‘chain’ to an ‘end’

channel. Each channel receives the trigger out signal from the previous (or

next) channel, and drives its selected trigger out to the next (or previous)

channel. The ‘end’ channel trigger out can be set up to drive the ‘start’ chan-

nel, closing the loop.

In this way, complex and versatile interchannel trigger schemes may be set

up. Each channel can have its trigger out and its output waveform set up in-

dependently. Trigger out may be selected from Waveform End, Position

Markers, Sequence Sync or Burst Done.

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.