TTI tg1010a DATASHEETS

THURLBY THANDAR INSTRUMENTS

TG1010A

10MHz programmable DDS function generator

Arbitrary Waveform Capability, Extensive Modulation Modes

Direct Digital Synthesis

All the versatility of a function generator

with the precision of Direct Digital Synthesis

A DDS generator at a
non-DDS price

The TG1010A breaks new ground by of
fering a DDS functiongenerator at asimi
lar price to that of a conventional
generator of comparable functionality.

It can generate a wide variety of wave
formsbetween0.1mHzand10MHzwith a
resolutionof 7digits andan accuracy bet
ter than 10ppm.

Direct digital synthesis for
accuracy & stability

Direct digital synthesis (DDS) is a tech
nique for generating waveforms digitally
using a phase accumulator, alook-up ta
ble and a DAC. The accuracy and stabil
ity of the resulting waveforms is related to
that of the crystal master clock.

TheDDSgenerator offers notonlyexcep­tional accuracy and stability but also high
spectral purity, low phase noise and ex­cellent frequency agility.

A wide range of
waveforms

The TG1010A generates high quality
sine, square and pulse waveforms over
the full frequency range of 0.1mHz to
10MHz.

Triangle waveforms, ramp waveforms and
multi-levelsquarewavescanalsobegener
atedsubjectto some limitationsinthe maxi
mum useable frequencies.

Variablesymmetry/duty-cycleisavailable
for all waveforms.

Powerful modulation modes

Sweep

Allwaveformscan besweptover theirfull

­frequency range at a rate variable be

­tween 10 milliseconds and 15 minutes.

The sweep is fully phase continuous.
Sweep can be linear or logarithmic, sin

­gle or continuous. Singlesweeps can be

triggered from the front panel, the trigger

­input, or the digital interfaces.

Two sweep markers are provided which
are adjustable whilst sweep is running.
The markers can provide a visual indica
tion of frequency points on a ‘scope or

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chart recorder.

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AM

Amplitude Modulation is available for all
waveforms and is variable in 1% steps up

­to 100%. An internal AM source is incor
porated. Alternatively modulation can be
controlled from an external generator.

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FSK

Frequency Shift Keying provides phase
coherent switching between two selected
frequencies at a rate defined by the
switching signal source.

­Theratecan be setfromdcto 50kHz inter
nally, or dc to 1MHz externally.

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Fully bus programmable

Addressable RS-232
standard, GPIB optional

The TG1010A has an RS-232 interface
asstandardwhich can beusedforremote
controlof all of the instrumentfunctions or
for the down-loading of arbitrary wave
forms.

As well as operating as a conventional
RS-232 interface, it can also be used in
addressable mode whereby up to 32 in
struments can be linked to one PC serial
port as part of a TTi “ARC” system.

Alternatively, a GPIB interface conform
ing to IEEE-488.2 is available as an op
tion.

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0.1mHz to 10MHz frequency range, 7 digit resolution.

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Eight standard waveforms, plus multiple “complex”
waveforms, true arbitrary waveforms and noise.

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Powerful modulation modes including Sweep, AM,
Gating, Trigger/Burst, FSK and Hop.

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Variable symmetry, variable start/stop phase.

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20V pk-pk output from 50Ωor 600Ω(switchable).

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Storage for five Arbitrary waveforms (1024 x 10-bits).

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Fully programmable via RS-232 or GPIB interfaces.

Powerfull modulation facilities

Arbitrary waveform capability

Trigger/Burst

Allwaveformsareavailable as atriggered
burst whereby each positive edge of the
Trigger signal will produce one burst of
the carrier, starting and stopping at the
phase angle specified by the start-stop
phase setting.

The number of cycles inthe burst canbe
set between 0.5 and 1023.

Single cycle burst, start-stop phase = 0

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Gated

The Gated mode turns the output signal
On when the gating signal is high and Off
when it is low.

Both Triggered and Gated modes can be
operated from the internalTrigger Gener­ator (0.005Hz to 50kHz) or from an exter­nal source (dc to 1MHz).

Easy and convenient
to use

The TG1010A is particularly easy touse.
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.

Pre-programmed ‘complex’ waveform.

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Phase continuous frequency sweep.

Amplitude modulation using the internal
sine wave modulation source.

Waveform hop

The generator can be set up to ‘hop’ be
tween a number of different waveform
set-ups either at a pre-determined rate or
in response to a manual or bus trigger.

Up to 16 differenthop waveforms can be
defined in terms of frequency, amplitude,
function, offset and duration, which is
variable in 1ms steps up to 60 seconds.

Noise generation

The TG1010 can be set to simulate wide
bandrandomnoisewith adjustable ampli
tude and offset.

Locked generators

The signals from theClock In/Outsocket
and the Sync Out socket can be used to
phase lock two or more generators.

Thiscan beused togenerate multi-phase
waveforms or locked waveforms of differ
ent frequencies.

Arbitrary waveform

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capability

Arbitrary waveforms can be loaded via
the digital interfaces and then used in a
similar way to the standard waveforms.

Up to five arbitrary waveforms of 1024
10-bit words can be stored in non-volatile
memory. The waveform clock is

27.48MHz maximum.
This facility considerably expands the

versatility of the TG1010A making it suit

­able for the generation of highly complex
waveform patterns.

In addition, the TG1010A offers numer
ous “complex” waveforms pre-defined in
ROM. These include commonly used
waveshapes such as sine x/x, decaying
sinewave, exponential rise and fall etc.

Optional software is available for the cre

­ation and editing of arbitrary waveforms

on a personal computer.

Frequency shifting on alternate cycles.

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Arbitrary waveform - simulated contact
bounce.

Technical Specifications

FREQUENCY

All waveforms are available up to 10MHz. However,
the purity of triangle, ramp, and multi-level squarewave
waveforms is not specified above the frequencies indi
cated in the following section.

Range: 0.1mHz to 10MHz
Resolution: 7 digits or 0.1mHZ
Accuracy: <±10ppm for 1 year, 18

Tempco.: Typically <1ppm/

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28

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C to 28oC

18

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C outside of

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C to

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WAVEFORMS

Sinewave

Distortion: <0.3% THD to 500kHz, -60dBc

Spurii: Non harmonically related spurii

to 20kHz, <-50dBc to 1MHz,
<-35dBc to 10MHz (typically
<-40dBc)

<-65dBc to 1MHz, <(-65dBc +
6dB/octave) 1MHz to 10MHz

Squarewave

Rise & Fall Times:<22ns

Triangle

Linearity error: <0.5% to 30kHz

Positive and Negative Ramp

Linearity error: <0.5% to 30kHz

Positive and Negative Pulse

Rise & Fall Times:<22ns

Multi-Level Squarewave

Up to 16 steps available per cycle, each step selecta
ble for amplitude (10 bit resolution) and duration (1 to
1024 samples). Above 27kHz a 36ns edge uncertainty
is introduced.

Rise & Fall Times: <22ns

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Arbitrary (and Complex)

A number of “complex” waveforms are pre­programmed in ROM . A further 5, user defined, wave­forms may be loaded via the digital interfaces and
stored in non-volatile RAM.

Frequency range: All waveform points can be con-

No. of Samples: 1024 10 bit samples

tinuously output up to 27kHz,
beyond which they are sampled

Noise

Wideband white noise with variable amplitude and off
set. Typical 3dB bandwidth 0.03Hz to 700kHz.

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SYMMETRY

Range: Sine,Triangle, Ramp - 1% to

Resolution: 0.1%

99% at all frequencies; Other
waveforms - 1% to 99% to
30kHz, 20% to 80% to 10MHz

MAIN OUTPUT

Output Impedance:
Amplitude: 5mV to 20V pk-pk open circuit

Output can be specified as V-HiZ (open circuit value)
or V (potential difference) in pk-pk, RMS or dBm. Note
that in positive or negative Pulse modes the amplitude
range is 2.5mV to 10V pk-pk O/C.

Accuracy: ±3% ±1mV at 1kHz into
Flatness: ±0.2dB to 500kHz; ±1dB to
Pulse Aberrations: <5% + 2mV

DC Offset:

Resolution: 3 digits for both amplitude and

50Ω or 600Ω switchable

(2.5mV to 10V into 50Ω/600Ω).

50Ω/600Ω
10MHz
±10V from 50Ω/600Ω. DC offset

plus signal peak limited to ±10V
from 50Ω/600Ω

offset

MODULA TIONMODES

Trigger/Burst

Phase coherent signal keying - each positive edge of
the Trigger signal will produce one burst of the carrier,
starting and stopping at the phase angle specified by
the Start/Stop phase setting.

Carrier frequency: 0.1mHz to 10MHz
Carrier waveforms:All
Number of cycles: 1 to 1023 (resolution 1 cycle) or

Trigger rep. rate: dc to 50kHz internal,
Source: Internal from keyboard or trigger

Gated

Non phase-coherent signal keying - output is On while
Gate signal is high and Off while low.

Carrier frequency: From 0.1mHz to 10MHz
Carrier waveforms:All
Trigger rep. rate: dc to 50kHz internal

Gate source: Internal from keyboard or trigger

Sweep

Carrier waveforms:All
Sweep Mode: Linear or logarithmic, single or

Sweep Width: 0.1mHz to 10MHz. Phase con

Sweep Time: 10ms to 999s (3 digit resolution)
Markers: Two markers variable during

Sweep Trigger
source:

Amplitude Modulation

Carrier frequency: 0.1mHz to 10MHz
Carrier waveforms:All
Depth: 0 to 100% typical, resolution 1%.
Internal source: 1kHz fixed sinewave or 0.005Hz

External: See “VCA In” section

Frequency Shift Keying (FSK)

Phase coherent switching between two frequencies at
a rate defined by the switching signal source.

Carrier frequency: 0.1mHz to 10MHz
Carrier waveforms:All
Switch repetition
rate:
Switching signal
source:

Hop

Up to 16 different “hop” waveforms can be defined in
terms of function, frequency, amplitude, offset and du
ration. Duration setable per step 1ms to 60s.

Start/Stop Phase

Carrier frequency: 0.1mHz to 10MHz
Carrier waveforms:All
Range: -360 to +360 degrees
Resolution: 1 degree
Accuracy: 1 degree up to 20kHz

Trigger Generator

Internal source 0.005Hz to 50kHz squarewave adjust
able in 20us steps. 3 digit resolution. Available for ex
ternal use from TRIG/SWEEP OUT socket

0.5 to 511.5 (resolution ½ cycle)
dc to 1MHz external
generator. External from EXT

TRIG input or remote interface

dc to 1MHz external
generator. External from EXT

TRIG input or remote interface

continuous
tinuous. Independent setting of

the start and stop frequency.

sweep. Available at the
TRIG/SWEEP OUT socket
The sweep may be free run or
triggered from: keyboard, EXT
TRIG input, remote interface

to 50kHz square wave

dc to 50kHz internal,
dc to 1MHz external
Internal from keyboard or trigger
generator. External from EXT
TRIG input or remote interface

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AUXILIAR YOUTPUTS

AUX OUT

CMOS/TTL levels with symmetry and frequency of
main output and phase of Start-Stop phase setting.

TRIG/SWEEP OUT

Multi-function output depending upon mode. Except in
Sweep mode, the output is that of the Trigger Gener

ator at CMOS/TTL levels from 1k
In Sweep mode the output is a 3-level waveform,
changing from high (+4V) to low (0V) at the start of
sweep, with narrow 1V pulses at each marker point.

Ω

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INPUTS

Ext Trig

Frequency Range:DC to 1MHz
Signal Range: TTL (1.5V) threshold; maximum

Min. Pulse Width: 50ns

input ±10V

VCA In

Frequency Range:DC - 100kHz
Signal Range: 2.5V for 100% level change at

Input Impedance:

maximum output
Typically 6kΩ

PHASE LOCKING

Clock In/Out

Sync Out

The signals from these sockets are used to phase lock
two or more generators.

TTL/CMOS threshold levels; out
put impedance typically 50Ω as
an output
TTL/CMOS logic levels from
typically 50Ω

INTERF A CES

Full remote control facilities are available through the
RS232 (standard) or optional GPIB interfaces.

RS232: Variable Baud rate, 9600 Baud

GPIB (IEEE-488): Conforming with IEEE488.1 and

maximum. 9-pin D-connector.
Fully compatible with Thurlby­Thandar ARC (Addressable
RS232 Chain) system

IEEE488.2

GENERAL

Display: 20 character x 4 row alphanu
Data Entry: Keyboard selection of mode,

Stored Settings: Up to 9 complete instrument

Size: 3U (130mm) height; half-rack
Weight: 4.1kg (9lb)

Power: 100V, 110-120V or 220-240V

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Operating Range: +5
Storage Range: -20
Environmental: Indoor use at altitudes up to

Safety: Complies with EN6010-1
EMC: Complies with EN61326

Options: GPIB (IEEE-488) interface.

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Thurlby Thandar Instruments Ltd. operates a policy of
continuous development and reserves the right to alter
specifications without prior notice.

meric LCD
waveform etc.; value entry di

rect by numeric keys or by rotary
control.

set-ups may be stored in
battery-backed memory.

(212mm) width, 330mm long

±10% 50/60Hz, adjustable inter
nally. 40VA max. Installation
Category II.

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C to 40oC, 20-80% RH

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C to +60oC

2000m, Pollution Degree 2

19 inch rack mounting kit.
PC-based waveform creation
and editing software - Waveform
Manager Plus

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Designed and built in the U.K. by:

Thurlby Thandar Instruments Ltd. Glebe Road, Huntingdon.

Cambs. PE18 7DX England Tel: [phone] Fax: [phone]

Email: [e-mail] Web: www.ttinst.co.uk

82100-0057 Iss. 2