Technical Specifications
82100-0089 Iss. 1
THURLBY THANDAR INSTRUMENTS
TGR1040
1GHz low-cost synthesised RF generator
high stability and low phase noise
CYAN MAGENTA YELLOW BLACK
INTERFACES
Full remote control facilities are available through the RS232 (stan-
dard) or optional GPIB interfaces.
RS232: Variable Baud rate, 19200 Baud maximum,
9-pin D-connector. Fully compatible with
Thurlby Thandar ARC (Addressable RS232
Chain) system.
IEEE-488: Conforming with IEEE488·1 and IEEE488·2.
GENERAL
Display: 20 character x 4 row backlit alphanumeric
LCD
Data Entry: Keyboard selection of frequency, amplitude,
etc.; value entry direct by numeric keys or by
rotary control.
Stored Settings: Up to 9 complete instrument set-ups may be
stored and recalled from battery-backed
memory.
Size: 3U (130mm) height; half-rack (212mm)
width; 330mm long.
Weight: 4·6 kg. (10 lb)
Power: 230V, 115V or 100V nominal 50/60Hz, ad-
justable internally; operating range ±14% of
nominal; 30VA max. Installation Category II.
Options: IEEE-488 interface; 19 inch rack mounting
kit.
ENVIRONMENTAL & SAFETY
Operating Range: +5°C to 40°C, 20-80% RH.
Storage Range: –20°C to + 60°C.
Environmental: Indoor use at altitudes up to 2000m,
Pollution Degree 1.
Safety: Complies with EN61010-1.
EMC: Complies with EN55011 and EN50082-1.
Specifications apply after 30 minute warm-up, ambient 5°C to 40°C
FREQUENCY
Frequency Range: 10MHz to 1000MHz
Setting Resolution: 1kHz by direct keyboard entry, or in user-set
increments of 1kHz to 999·999MHz by ro-
tary control or increment–decrement keys.
Display Resolution: 1kHz
Accuracy: ± 2 ppm over temperature range 5°C to
40°C.
Stability: <1ppm/year ageing.
Phase Noise: -110dBc/Hz at 25kHz offset, 500MHz car-
rier.
Residual FM:
(FM Off) Equivalent peak deviation in a 300Hz to
3·4kHz bandwidth:
10Hz at 100MHz carrier
35Hz at 500MHz carrier
180Hz at 1000MHz carrier
OUTPUT LEVEL
Output Level Range: –127dBm to +7dBm (0·1µV to 500mV into
50Ω).
Setting Resolution: 0·1dB (or 0·01µV to 1mV) by direct key-
board entry, or in user-set increments of
0·1dB to 100dB (or 0·01µV to 100mV) by ro-
tary control or increment–decrement keys.
Accuracy: Better than ± 2dBm, except for output levels
<-70dBm at 500 -1000 MHz, ± 3dBm.
Harmonics: Typically <-25dBc, maximum –20dBc, any
carrier frequency, output level <0dBm.
Non-Harmonic Spurii: <–60dBc at >8kHz offset.
Carrier Leakage: <0.5uV generated into a 50Ωload by a
2 turn 25mm loop, at a distance of 25mm
from the generator with the output set to
<-10dBm into a 50Ωsealed load.
Output Impedance: 50Ω
Output Connector: TYPE N
Reverse Protection: 50V DC
Output Switch: RF OUT on-off switch with LED showing ON
status.
FM MODULATION
Peak Deviation: 0·5kHz to 100kHz.
Setting Resolultion: 0·5kHz by direct keyboard entry, rotary con-
trol or increment–decrement keys.
Modulation Frequency: Internal 1kHz; External 300Hz to 50kHz
Deviation Accuracy: <±10% of setting ±0.5kHz, excluding
residual FM, for 1kHz modulation, internal or
1Vrms external.
External Modulation
Frequency Response: ± 1dB from 300Hz to 50kHz relative to
1kHz.
Distortion: <2% total harmonic distortion at 1kHz modu-
lating frequency, 100kHz deviation and
500MHz carrier.
Input Impedance: 100kΩ
Input Connector: BNC
Thurlby Thandar Instruments Ltd. operates a policy of continuous development and
reserves the right to alter specifications without prior notice.
Designed and built in the U.K. by:
Thurlby Thandar Instruments Ltd.
Glebe Road, Huntingdon. Cambs. PE18 7DX England
Tel: 01480 412451 Fax: 01480 450409 Email: sales@ttinst.co.uk
Web: http://www.ttinst.co.uk
internal and external frequency modulation
wide amplitude range and low leakage
TGR1040 low-cost synthesised RF generator 10MHz to 1000MHz
high stability, wide amplitude range
CYAN MAGENTA YELLOW BLACK
Lower cost through innovative design
TheTGR1040setsa newprice standardfor ahigh performance
RFgenerator. Costing littlemore thanan analoguegenerator, it
has the precision of a synthesised generator. Advanced design
techniques utilising the latest component technologies have
made this possible.
Noweveryengineer involvedin RFdesign,manufacture ortest-
ing can have a generator of their own.
Precision and Stability
The TGR1040 uses a fully synthesised source locked to a tem-
peraturecompensatedcrystaloscillator.This providesexcellent
signal frequency stability against temperature and ageing.
Careful low power oscillator design has yielded good phase
noise characteristics.
The frequency can be set to a resolution of 1kHz across the
whole frequency range, yielding a precision of 1ppm at 1GHz.
Frequency steps can be set from 1kHz up to 999·999MHz. The
frequency stepping system makes operations such as precise
amplitude response characterisation particularly easy.
Ease of use
Ease of use was a major consideration in the design of the
TGR1040. A simple and straightforward user interface is com-
bined with a comprehensive remote command set.
Theclearfour linedisplayshowsall themajorsignalparameters
simultaneously. Data can be entered numerically using0-9
keys or can be incremented/decremented using up/down keys
or the rotary encoder. Both frequency and output level can be
adjusted in steps of user programmed size.
Thereisnorequirementtosetbothalevelandanattenuatorset-
ting, the internal arrangements are transparent to the user, just
set the level required and switch on the output. Output level can
be set either in dBm or linear units of µV or mV. A single button
press will translate from one to the other.
Wide amplitude range
The TGR1040 provides an amplitude range of –127dBm to
+7dBm(0·1µVto500mVinto50Ω). Settingresolutionis0.1dBm
or 0.01µV.
Output level steps can be set anywhere between 0·1dBm and
100dBm (or 0·01µV to 100mV depending on the entry mode).
Steppingthelevelisusefulforquickassessmentofcircuitlinear-
ity and dynamic range for instance.
The all-electronic attenuators provide highly repeatable output
levels and are more reliable than mechanically switched
sysyems.
Careful attention to screening requirements has given low out-
putleakageso asnot to affectlow level measurementsin sensi-
tive circuits such as receivers.
Overview
The TGR1040 is a low cost, synthesised RF signal generator
which incorporates the essential features required for most
development,testand servicework - frequencyaccuracy and
stability, wide dynamic range, low phase noise and low leak-
age.
The generator incororates both internal and external FM. It is
suitablefor FMradio receiversensitivity measurements,system
gainmeasurements, receivertuning &alignment, oscillatorsub-
stitutions, EMC/antenna/field strength measurements and as a
signalsourceformanyotherRFcircuitandsystemdevelopment
tasks.
The instrument can be operated manually via the front panel or
can be remotely controlled via the RS-232 interface (standard)
or GPIB interface (optional). Nine memories are provided for
user set-ups.
In addition the generator's low cost, it’s ease of use and remote
control capabilities make it eminently suitable for most produc-
tion and development applications where a basic, stable signal
source is required.
FM Modulation
The TGR1040 provides both internal or external FM modulation
usinge either the internally generated 1kHz modulator signal or
an external signal in the range 300Hz to 50kHz.
This wide bandwidth allows for audio band demodulator testing
as well as LF digital modulation.
Programmability for routine testing
The TGR1040 can store nine full instrument set-ups in
non-volatile memory. This allows repetitive testing procedures
to be undertaken quickly and accurately.
Full remote control
The TGR1040 provides full remote control facilities for all its
functions. An RS-232 interface is provided as standard and a
GPIB (IEEE-488.2) interface is available as an option.
●
10MHz to 1000MHz frequency range
●
1kHz setability at any frequency
●
±2ppm accuracy over 5
o
C to 40
o
C
●
-127dBm to +7dBm amplitude range
●
Amplitude control in 0.1dB steps
●
FM modulation, internal or external
●
80 character back-lit LCD display
●
Keyboard and rotary encoder control
●
Non-volatile storage for 9 user set-ups
●
Full remote control via RS-232 or GPIB
●
Outstanding price/performance ratio
TGR1040 low-cost synthesised RF generator 10MHz to 1000MHz
high stability, wide amplitude range
CYAN MAGENTA YELLOW BLACK
Lower cost through innovative design
TheTGR1040 setsa newprice standardfor ahigh performance
RFgenerator. Costing littlemore thanan analoguegenerator, it
has the precision of a synthesised generator. Advanced design
techniques utilising the latest component technologies have
made this possible.
Noweveryengineer involvedin RFdesign,manufacture ortest-
ing can have a generator of their own.
Precision and Stability
The TGR1040 uses a fully synthesised source locked to a tem-
peraturecompensatedcrystaloscillator.This providesexcellent
signal frequency stability against temperature and ageing.
Careful low power oscillator design has yielded good phase
noise characteristics.
The frequency can be set to a resolution of 1kHz across the
whole frequency range, yielding a precision of 1ppm at 1GHz.
Frequency steps can be set from 1kHz up to 999·999MHz. The
frequency stepping system makes operations such as precise
amplitude response characterisation particularly easy.
Ease of use
Ease of use was a major consideration in the design of the
TGR1040. A simple and straightforward user interface is com-
bined with a comprehensive remote command set.
Theclearfour linedisplayshowsall themajorsignalparameters
simultaneously. Data can be entered numerically using0-9
keys or can be incremented/decremented using up/down keys
or the rotary encoder. Both frequency and output level can be
adjusted in steps of user programmed size.
Thereisnorequirementtosetbothalevelandanattenuatorset-
ting, the internal arrangements are transparent to the user, just
set the level required and switch on the output. Output level can
be set either in dBm or linear units of µV or mV. A single button
press will translate from one to the other.
Wide amplitude range
The TGR1040 provides an amplitude range of –127dBm to
+7dBm(0·1µVto500mVinto50Ω). Settingresolutionis0.1dBm
or 0.01µV.
Output level steps can be set anywhere between 0·1dBm and
100dBm (or 0·01µV to 100mV depending on the entry mode).
Steppingthelevelisusefulforquickassessmentofcircuitlinear-
ity and dynamic range for instance.
The all-electronic attenuators provide highly repeatable output
levels and are more reliable than mechanically switched
sysyems.
Careful attention to screening requirements has given low out-
putleakageso asnot to affectlow level measurementsin sensi-
tive circuits such as receivers.
Overview
The TGR1040 is a low cost, synthesised RF signal generator
which incorporates the essential features required for most
development,testand servicework - frequencyaccuracy and
stability, wide dynamic range, low phase noise and low leak-
age.
The generator incororates both internal and external FM. It is
suitablefor FMradio receiversensitivity measurements,system
gainmeasurements, receivertuning &alignment, oscillatorsub-
stitutions, EMC/antenna/field strength measurements and as a
signalsourceformanyotherRFcircuitandsystemdevelopment
tasks.
The instrument can be operated manually via the front panel or
can be remotely controlled via the RS-232 interface (standard)
or GPIB interface (optional). Nine memories are provided for
user set-ups.
In addition the generator's low cost, it’s ease of use and remote
control capabilities make it eminently suitable for most produc-
tion and development applications where a basic, stable signal
source is required.
FM Modulation
The TGR1040 provides both internal or external FM modulation
usinge either the internally generated 1kHz modulator signal or
an external signal in the range 300Hz to 50kHz.
This wide bandwidth allows for audio band demodulator testing
as well as LF digital modulation.
Programmability for routine testing
The TGR1040 can store nine full instrument set-ups in
non-volatile memory. This allows repetitive testing procedures
to be undertaken quickly and accurately.
Full remote control
The TGR1040 provides full remote control facilities for all its
functions. An RS-232 interface is provided as standard and a
GPIB (IEEE-488.2) interface is available as an option.
●
10MHz to 1000MHz frequency range
●
1kHz setability at any frequency
●
±2ppm accuracy over 5
o
C to 40
o
C
●
-127dBm to +7dBm amplitude range
●
Amplitude control in 0.1dB steps
●
FM modulation, internal or external
●
80 character back-lit LCD display
●
Keyboard and rotary encoder control
●
Non-volatile storage for 9 user set-ups
●
Full remote control via RS-232 or GPIB
●
Outstanding price/performance ratio
Technical Specifications
82100-0089 Iss. 1
THURLBYTHANDARINSTRUMENTS
TGR1040
1GHz low-cost synthesised RF generator
high stability and low phase noise
CYANMAGENTAYELLOWBLACK
INTERFACES
Full remote control facilities are available through the RS232 (stan-
dard) or optional GPIB interfaces.
RS232: VariableBaudrate,19200Baudmaximum,
9-pinD-connector.Fullycompatiblewith
ThurlbyThandarARC(AddressableRS232
Chain)system.
IEEE-488: ConformingwithIEEE488·1andIEEE488·2.
GENERAL
Display: 20characterx4rowbacklitalphanumeric
LCD
Data Entry: Keyboardselectionoffrequency,amplitude,
etc.;valueentrydirectbynumerickeysorby
rotarycontrol.
Stored Settings: Upto9completeinstrumentset-upsmaybe
storedandrecalledfrombattery-backed
memory.
Size: 3U(130mm)height;half-rack(212mm)
width;330mmlong.
Weight: 4·6kg.(10lb)
Power: 230V,115Vor100Vnominal50/60Hz,ad-
justableinternally;operatingrange±14%of
nominal;30VAmax.InstallationCategoryII.
Options: IEEE-488interface;19inchrackmounting
kit.
ENVIRONMENTAL&SAFETY
Operating Range: +5°Cto40°C,20-80%RH.
Storage Range: –20°Cto+60°C.
Environmental: Indooruseataltitudesupto2000m,
PollutionDegree1.
Safety: ComplieswithEN61010-1.
EMC: ComplieswithEN55011andEN50082-1.
Specifications apply after 30 minute warm-up, ambient 5°C to 40°C
FREQUENCY
Frequency Range: 10MHzto1000MHz
Setting Resolution: 1kHzbydirectkeyboardentry,orinuser-set
incrementsof1kHzto999·999MHzbyro-
tarycontrolorincrement–decrementkeys.
Display Resolution: 1kHz
Accuracy: ±2ppmovertemperaturerange5°Cto
40°C.
Stability: <1ppm/yearageing.
Phase Noise: -110dBc/Hzat25kHzoffset,500MHzcar-
rier.
Residual FM:
(FM Off) Equivalentpeakdeviationina300Hzto
3·4kHzbandwidth:
8Hzat100MHzcarrier
17Hzat500MHzcarrier
62Hzat1000MHzcarrier
OUTPUTLEVEL
Output Level Range: –127dBmto+7dBm(0·1µVto500mVinto
50Ω).
Setting Resolution: 0·1dB(or0·01µVto1mV)bydirectkey-
boardentry,orinuser-setincrementsof
0·1dBto100dB(or0·01µVto100mV)byro-
tarycontrolorincrement–decrementkeys.
Accuracy: Betterthan±2dBm,exceptforoutputlevels
<-70dBmat500-1000MHz,±3dBm.
Harmonics: Typically<-25dBc,maximum–20dBc,any
carrierfrequency,outputlevel<0dBm.
Non-Harmonic Spurii:<–60dBcat>8kHzoffset.
Carrier Leakage: <0.5uVgeneratedintoa50Ωloadbya
2turn25mmloop,atadistanceof25mm
fromthegeneratorwiththeoutputsetto
<-10dBmintoa50Ωsealedload.
Output Impedance: 50Ω
Output Connector: TYPEN
Reverse Protection: 50VDC
Output Switch: RFOUTon-offswitchwithLEDshowingON
status.
FMMODULATION
Peak Deviation: 0·5kHzto100kHz.
Setting Resolultion: 0·5kHzbydirectkeyboardentry,rotarycon-
trolorincrement–decrementkeys.
ModulationFrequency:Internal1kHz;External300Hzto50kHz
Deviation Accuracy: <±10%ofsetting±0.5kHz,excluding
residualFM,for1kHzmodulation,internalor
1Vrmsexternal.
External Modulation
Frequency Response:±1dBfrom300Hzto50kHzrelativeto
1kHz.
Distortion: <2%totalharmonicdistortionat1kHzmodu-
latingfrequency,100kHzdeviationand
500MHzcarrier.
Input Impedance: 100kΩ
Input Connector: BNC
Thurlby Thandar Instruments Ltd. operates a policy of continuous development and
reserves the right to alter specifications without prior notice.
Designed and built in the U.K. by:
ThurlbyThandarInstrumentsLtd.
GlebeRoad,Huntingdon.Cambs.PE187DXEngland
Tel:01480412451Fax:01480450409Email:sales@ttinst.co.uk
Web:http://www.ttinst.co.uk
internal and external frequency modulation
wide amplitude range and low leakage
