Technical Specifications Specifications apply at 18- 28C after 1 hour warm-up, at maximum output into 50W. FREQUENCY All waveforms are derived from a crystal clock using Direct Digital Synthesis. Frequency Range: 1mHz to 10MHz (TG1000) or 20MHz (TG2000) Resolution: 6 digits or 1mHz Accuracy: 10ppm for 1 year, 18oC to 28oC; 1mHz below 0.2Hz Tempco.: Typically <1ppm/oC outside of 18oC to 28oC Period: Waveform: Sinewave Spurii: Output Level: 1mHz to 10MHz/20MHz 6 digits or 1mHz <0.3% THD to 20kHz (typically 0.1%), <-45dBc to 300kHz, <-35dBc to 20MHz (typically <-40dBc) Non harmonically related spurii <-55dBc to 1MHz, <(-55dBc + 6dB/octave) 1MHz to 20MHz 5mV to 20V pk-pk from 50W or 600W Squarewave Range: Resolution: Symmetry: Aberrations: Rise & Fall Times: Output Level: 1mHz to 10MHz/20MHz 6 digits or 1mHz variable 20% to 80% in 1% steps <5% + 2mV <22ns 5mV to 20V pk-pk from 50W or 600W Triangle Range: Resolution: Linearity error: Output Level: 1mHz to 1MHz 6 digits or 1mHz <0.5% to 100kHz 5mV to 20V pk-pk from 50W or 600W Positive and Negative Pulse Range: Resolution: Symmetry: Aberrations: Rise & Fall Times: Output Level: 1mHz to 10MHz/20MHz 6 digits or 1mHz variable 20% to 80% in 1% steps <5% + 2mV <22ns 2.5mV to 10V pk-pk from 50/600W positive or negative only pulses with respect to the DC Offset baseline MODULATION MODES Continuous Continuous cycles of the selected waveform are output at the selected frequency. Gated Non phase-coherent signal keying - output is On while Gate signal is high and Off while low. Carrier frequency: From 0.1Hz to 10MHz/20MHz Carrier waveforms: All Trigger rep. rate: dc to 100kHz external, dc to 5kHz internal Gate source: Front panel MAN TRIG key, Internal Gate Generator, TRIG/GATE input, or Remote Interface Sweep Carrier waveforms: Sweep Mode: Sweep Width: Sweep Time: Markers: Sweep Trigger source: All Linear or logarithmic, single or continuous 0.2Hz to 10MHz/20MHz in one range. Phase continuous. Independent setting of the start and stop frequency 50ms to 999s (3 digit resolution) Available from AUX output. Variable during sweep The sweep may be free run or triggered from: front panel MAN TRIG key, TRIG/GATE input, or Remote Interface Amplitude Modulation Carrier frequency: Carrier waveforms: Modulation source: The tone is output while the trigger signal is high, and stopped when the trigger signal is low. The next tone is output when the trigger signal goes high again. Carrier waveforms: All Frequency list: Up to 16 frequencies between 1Hz and 10MHz/20MHz Min. switching time: 1ms per tone Switching source: Front panel MAN TRIG key, Internal Trigger Generator, TRIG/GATE input, or Remote Interface Internal Trigger/Gate Generator WAVEFORMS Range: Resolution: Distortion: Tone 1mHz to 10MHz/20MHz All VCA IN socket Frequency Shift Keying (FSK) 0.2ms to 999s (resolution 0.2 ms) Square wave (1:1 duty cycle) THURLBY THANDAR INSTRUMENTS MAIN OUTPUT Output Impedance: 50W or 600W switchable Amplitude: 5mV to 20V pk-pk open circuit (2.5mV to10V into 50/600W) 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 50W/600W Flatness: 0.2dB to 500kHz; 1dB to 10MHz; 2dB to 20MHz DC Offset: 10V from 50W/600W. DC offset plus signal peak limited to 10V. Accuracy 3% 10mV Resolution: 3 digits for both amplitude and offset AUXILIARY OUTPUT Multi-function output user definable to be any of the following: Waveform Sync: Outputs a 50% duty cycle squarewave at the main waveform frequency Trigger Out: Outputs a replica of the current trigger signal Sweep Sync: Outputs a trigger signal at the start of sweep (for synchronising an oscilloscope or chart recorder). Can additionally output a sweep marker. Signal Levels: Output Impedance 50W nominal. Logic levels of <0.8V and >3V. Sweep Sync is a 3 level waveform, low at start of sweep, high at end of sweep, with a narrow 1V pulse at the marker point INPUTS Ext Trig/Gate Frequency Range: Signal Range: Min. Pulse Width: Input Impedance: DC to 1MHz for FSK; DC to 100kHz for Gate; DC to 2.5kHz for Tone and Sweep Nominal TTL level threshold; maximum input 10V 100ns for Gate/FSK; 0.2ms for Sweep and Tone Typically 10kW VCA In Frequency Range: Signal Range: Input Impedance: DC - 100kHz 2.5V for 100% level change at maximum output Typically 6kW INTERFACES (TG2000 only) Full remote control facilities are available through the RS232 or USB interfaces. RS232: Variable Baud rate (19200 max), 9-pin D-connector. As well as operating in a conventional RS-232 mode the interface can be operated in addressable mode whereby up to 32 instruments can be addressed from one RS-232 port USB: Standard USB hardware connection. Conforming USB 1.1 GENERAL Display: Data Entry: Stored Settings: Size & Weight: Power: 20 character x 4 row alphanumeric LCD Keyboard selection of mode, waveform etc.; value entry direct by numeric keys or by rotary control. Up to 9 complete instrument set-ups may be stored in battery-backed memory. 260(W) x 88(H) x 235(D) mm; 2kg (4.5lb) 100V, 110-120V or 220-240V 10% 50/60Hz, adjustable internally. 40VA max. Installation Category II. +5oC to 40oC, 20-80% RH -20oC to +60oC Indoor use at altitudes up to 2000m, Pollution Degree 2 Complies with EN6010-1 and EN61326 Phase coherent switching between two selected frequencies at a rate defined by the switching signal source. Carrier frequency: 1Hz to 10MHz/20MHz Carrier waveforms: All Switch rate: dc to 5kHz (internal), dc to 1MHz (external) Operating Range: Storage Range: Environmental: Safety & EMC: Switching signal source: Thurlby Thandar Instruments Ltd. operates a policy of continuous development and reserves the right to alter specifications without prior notice. Front panel MAN TRIG key, Internal Trigger Generator, TRIG/GATE input, or Remote Interface TG1000 & TG2000 Designed and built in Europe by: 10MHz & 20MHz DDS function generators Sweep, AM, FSK & Tone switching modes RS-232 and USB interfaces (TG2000 only) Direct Digital Synthesis Thurlby Thandar Instruments Ltd. Glebe Road, Huntingdon. Cambs. PE29 7DR United Kingdom (UK) Tel: +44 (0)1480 412451 Fax: +44 (0)1480 450409 Email: sales@tti-test.com Web: www.tti-test.com 82100-1240 Issue 2 A value-for-money 10MHz or 20MHz function generator with the precision of Direct Digital Synthesis A new price point and full digital control via RS-232 or USB (TG2000 only) Wide frequency and amplitude range Ease of use Modulation modes The TG1000/2000 breaks new ground by offering a high quality DDS function generator at a significantly lower price. DDS (direct digital synthesis) is a technique for generating waveforms digitally using a phase accumulator, a look-up table and a DAC. The accuracy and stability of the resulting waveforms is related to that of the crystal master clock. When correctly engineered, the DDS generator offers not only exceptional accuracy and stability but also high spectral purity, low phase noise and excellent frequency agility. The TG2000 can generate waveforms between 0.001Hz and 20MHz with a resolution of six digits and a one year accuracy better than 10ppm. The TG1000 has a 10MHz limit. Amplitude is variable between 5mV and 20V pk-pk from a source impedance of 50W or 600W. Unlike many generators, the waveform quality remains excellent over the full amplitude range. Sweep Total digital control The TG2000 also includes both an RS-232 interface and USB interface. These interfaces can be used for remote control of all of the instrument functions and for remotely storing instrument set-ups. The TG1000 and TG2000 are particularly easy to use. All of the main information is clearly displayed on a backlit LCD with 4 rows of 20 characters. Sub menus are used for the modulation modes and other complex functions. All parameters can be entered directly from the numeric keypad. Alternatively most parameters can be incremented or decremented using the rotary encoder for quasi-analogue control. Unlike some other generators which only provide digital control of frequency, every function is digitally controlled enabling complete instrument set-ups to be stored, or full remote control to be implemented (TG2000 only). RS-232 and USB interfaces Frequency or period entry The generator frequency can be set in terms of either frequency or period. Numeric entry is floating point using whatever units the operator prefers. Flexible amplitude entry Amplitudes can be entered in terms of peak to peak voltage, RMS voltage or dBm. The output impedance can be set to 50W or 600W, and the amplitude can be set in terms of either the voltage into the correct termination, or the source EMF (for a high impedance load). u u u u u u u u u 0.001Hz to 10MHz or 20MHz frequency range, 6 digits or 1mHz setting resolution. 1ppm stability and better than 10 ppm absolute accuracy for one year. Sine, square, triangle, positive pulse and negative pulse waveforms. Low distortion, high spectral purity sine waves. Internal sweep, linear or logarithmic, full range phase continuous, adjustable marker. Modulations modes of gated, AM, FSK and tone switching; built-in trigger generator. 5mV to 20V pk-pk output from 50 W or 600 W; plus multi function auxiliary output. Storage for up to nine complete instrument set-ups in non-volatile memory. Fully programmable via RS-232 or USB interfaces (TG2000 only). All waveforms can be swept over their full frequency range (0.2Hz minimum) at a rate variable between 50 milliseconds and more than 15 minutes. The sweep is fully phase continuous. 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. A sweep marker is provided that is adjustable whilst sweep is running. The markers can provide a visual indication of frequency points on a `scope or chart recorder. Gated The Gated mode sets the output signal on or off depending on the gating signal state. The gating source can be the front panel key, internal trigger generator, trigger input socket, or bus interface signal. AM External Amplitude Modulation of up to 100% is available for all waveforms via the VCA input. Quick recall of settings FSK Both generators provide nine memories for storing settings. Because all parameters are controlled electronically, the memories store the full set-up of the instrument and automated test sequences are easy to set up. In addition to the nine user memories, the current state of the instrument is saved at switch off. The user can choose to have this state restored at switch on, or choose a pre-defined default set-up. Frequency Shift Keying provides phase coherent switching between two selected frequencies at a rate defined by the source. The switching source can be the front panel key, internal trigger generator, trigger input socket, or bus interface signal. Amplitude modulation using an external sine wave modulation source. Tone Switching The generator can be set to switch between a number of different frequencies in response to a trigger signal. Up to 16 frequencies can be defined. Frequency switching in FSK mode. Synchronisation The auxiliary output socket can provide any one of three different Sync. signals. Waveform Sync is a 50% duty cycle square wave at the frequency of the main output. Sweep Sync. outputs a pulse at the start of each sweep and can also output a pulse at a user defined marker frequency. Trigger Out provides a replica of the trigger signal which can be from the trigger input socket, the internal trigger/gate generator, the manual trigger key, or the bus interface. Phase continuous frequency sweep. See the difference ! Ultimately what matters in a function generator is the quality of the output signal. The TG1000/2000 maintains the TTi reputation for high signal quality at all frequencies and all levels. The waveform capture opposite shows just how much difference that can make ! The 'scope display opposite was captured from two 5MHz square wave signals each at 60mV pk-pk level into 50 W. The upper waveform is from a widely available competitive DDS generator. The lower waveform is from a TG2000. A value-for-money 10MHz or 20MHz function generator with the precision of Direct Digital Synthesis A new price point and full digital control via RS-232 or USB (TG2000 only) Wide frequency and amplitude range Ease of use Modulation modes The TG1000/2000 breaks new ground by offering a high quality DDS function generator at a significantly lower price. DDS (direct digital synthesis) is a technique for generating waveforms digitally using a phase accumulator, a look-up table and a DAC. The accuracy and stability of the resulting waveforms is related to that of the crystal master clock. When correctly engineered, the DDS generator offers not only exceptional accuracy and stability but also high spectral purity, low phase noise and excellent frequency agility. The TG2000 can generate waveforms between 0.001Hz and 20MHz with a resolution of six digits and a one year accuracy better than 10ppm. The TG1000 has a 10MHz limit. Amplitude is variable between 5mV and 20V pk-pk from a source impedance of 50W or 600W. Unlike many generators, the waveform quality remains excellent over the full amplitude range. Sweep Total digital control The TG2000 also includes both an RS-232 interface and USB interface. These interfaces can be used for remote control of all of the instrument functions and for remotely storing instrument set-ups. The TG1000 and TG2000 are particularly easy to use. All of the main information is clearly displayed on a backlit LCD with 4 rows of 20 characters. Sub menus are used for the modulation modes and other complex functions. All parameters can be entered directly from the numeric keypad. Alternatively most parameters can be incremented or decremented using the rotary encoder for quasi-analogue control. Unlike some other generators which only provide digital control of frequency, every function is digitally controlled enabling complete instrument set-ups to be stored, or full remote control to be implemented (TG2000 only). RS-232 and USB interfaces Frequency or period entry The generator frequency can be set in terms of either frequency or period. Numeric entry is floating point using whatever units the operator prefers. Flexible amplitude entry Amplitudes can be entered in terms of peak to peak voltage, RMS voltage or dBm. The output impedance can be set to 50W or 600W, and the amplitude can be set in terms of either the voltage into the correct termination, or the source EMF (for a high impedance load). u u u u u u u u u 0.001Hz to 10MHz or 20MHz frequency range, 6 digits or 1mHz setting resolution. 1ppm stability and better than 10 ppm absolute accuracy for one year. Sine, square, triangle, positive pulse and negative pulse waveforms. Low distortion, high spectral purity sine waves. Internal sweep, linear or logarithmic, full range phase continuous, adjustable marker. Modulations modes of gated, AM, FSK and tone switching; built-in trigger generator. 5mV to 20V pk-pk output from 50 W or 600 W; plus multi function auxiliary output. Storage for up to nine complete instrument set-ups in non-volatile memory. Fully programmable via RS-232 or USB interfaces (TG2000 only). All waveforms can be swept over their full frequency range (0.2Hz minimum) at a rate variable between 50 milliseconds and more than 15 minutes. The sweep is fully phase continuous. 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. A sweep marker is provided that is adjustable whilst sweep is running. The markers can provide a visual indication of frequency points on a `scope or chart recorder. Gated The Gated mode sets the output signal on or off depending on the gating signal state. The gating source can be the front panel key, internal trigger generator, trigger input socket, or bus interface signal. AM External Amplitude Modulation of up to 100% is available for all waveforms via the VCA input. Quick recall of settings FSK Both generators provide nine memories for storing settings. Because all parameters are controlled electronically, the memories store the full set-up of the instrument and automated test sequences are easy to set up. In addition to the nine user memories, the current state of the instrument is saved at switch off. The user can choose to have this state restored at switch on, or choose a pre-defined default set-up. Frequency Shift Keying provides phase coherent switching between two selected frequencies at a rate defined by the source. The switching source can be the front panel key, internal trigger generator, trigger input socket, or bus interface signal. Amplitude modulation using an external sine wave modulation source. Tone Switching The generator can be set to switch between a number of different frequencies in response to a trigger signal. Up to 16 frequencies can be defined. Frequency switching in FSK mode. Synchronisation The auxiliary output socket can provide any one of three different Sync. signals. Waveform Sync is a 50% duty cycle square wave at the frequency of the main output. Sweep Sync. outputs a pulse at the start of each sweep and can also output a pulse at a user defined marker frequency. Trigger Out provides a replica of the trigger signal which can be from the trigger input socket, the internal trigger/gate generator, the manual trigger key, or the bus interface. Phase continuous frequency sweep. See the difference ! Ultimately what matters in a function generator is the quality of the output signal. The TG1000/2000 maintains the TTi reputation for high signal quality at all frequencies and all levels. The waveform capture opposite shows just how much difference that can make ! The 'scope display opposite was captured from two 5MHz square wave signals each at 60mV pk-pk level into 50 W. The upper waveform is from a widely available competitive DDS generator. The lower waveform is from a TG2000. Technical Specifications Specifications apply at 18- 28C after 1 hour warm-up, at maximum output into 50W. FREQUENCY All waveforms are derived from a crystal clock using Direct Digital Synthesis. Frequency Range: 1mHz to 10MHz (TG1000) or 20MHz (TG2000) Resolution: 6 digits or 1mHz Accuracy: 10ppm for 1 year, 18oC to 28oC; 1mHz below 0.2Hz Tempco.: Typically <1ppm/oC outside of 18oC to 28oC Period: Waveform: Sinewave Spurii: Output Level: 1mHz to 10MHz/20MHz 6 digits or 1mHz <0.3% THD to 20kHz (typically 0.1%), <-45dBc to 300kHz, <-35dBc to 20MHz (typically <-40dBc) Non harmonically related spurii <-55dBc to 1MHz, <(-55dBc + 6dB/octave) 1MHz to 20MHz 5mV to 20V pk-pk from 50W or 600W Squarewave Range: Resolution: Symmetry: Aberrations: Rise & Fall Times: Output Level: 1mHz to 10MHz/20MHz 6 digits or 1mHz variable 20% to 80% in 1% steps <5% + 2mV <22ns 5mV to 20V pk-pk from 50W or 600W Triangle Range: Resolution: Linearity error: Output Level: 1mHz to 1MHz 6 digits or 1mHz <0.5% to 100kHz 5mV to 20V pk-pk from 50W or 600W Positive and Negative Pulse Range: Resolution: Symmetry: Aberrations: Rise & Fall Times: Output Level: 1mHz to 10MHz/20MHz 6 digits or 1mHz variable 20% to 80% in 1% steps <5% + 2mV <22ns 2.5mV to 10V pk-pk from 50/600W positive or negative only pulses with respect to the DC Offset baseline MODULATION MODES Continuous Continuous cycles of the selected waveform are output at the selected frequency. Gated Non phase-coherent signal keying - output is On while Gate signal is high and Off while low. Carrier frequency: From 0.1Hz to 10MHz/20MHz Carrier waveforms: All Trigger rep. rate: dc to 100kHz external, dc to 5kHz internal Gate source: Front panel MAN TRIG key, Internal Gate Generator, TRIG/GATE input, or Remote Interface Sweep Carrier waveforms: Sweep Mode: Sweep Width: Sweep Time: Markers: Sweep Trigger source: All Linear or logarithmic, single or continuous 0.2Hz to 10MHz/20MHz in one range. Phase continuous. Independent setting of the start and stop frequency 50ms to 999s (3 digit resolution) Available from AUX output. Variable during sweep The sweep may be free run or triggered from: front panel MAN TRIG key, TRIG/GATE input, or Remote Interface Amplitude Modulation Carrier frequency: Carrier waveforms: Modulation source: The tone is output while the trigger signal is high, and stopped when the trigger signal is low. The next tone is output when the trigger signal goes high again. Carrier waveforms: All Frequency list: Up to 16 frequencies between 1Hz and 10MHz/20MHz Min. switching time: 1ms per tone Switching source: Front panel MAN TRIG key, Internal Trigger Generator, TRIG/GATE input, or Remote Interface Internal Trigger/Gate Generator WAVEFORMS Range: Resolution: Distortion: Tone 1mHz to 10MHz/20MHz All VCA IN socket Frequency Shift Keying (FSK) 0.2ms to 999s (resolution 0.2 ms) Square wave (1:1 duty cycle) THURLBY THANDAR INSTRUMENTS MAIN OUTPUT Output Impedance: 50W or 600W switchable Amplitude: 5mV to 20V pk-pk open circuit (2.5mV to10V into 50/600W) 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 50W/600W Flatness: 0.2dB to 500kHz; 1dB to 10MHz; 2dB to 20MHz DC Offset: 10V from 50W/600W. DC offset plus signal peak limited to 10V. Accuracy 3% 10mV Resolution: 3 digits for both amplitude and offset AUXILIARY OUTPUT Multi-function output user definable to be any of the following: Waveform Sync: Outputs a 50% duty cycle squarewave at the main waveform frequency Trigger Out: Outputs a replica of the current trigger signal Sweep Sync: Outputs a trigger signal at the start of sweep (for synchronising an oscilloscope or chart recorder). Can additionally output a sweep marker. Signal Levels: Output Impedance 50W nominal. Logic levels of <0.8V and >3V. Sweep Sync is a 3 level waveform, low at start of sweep, high at end of sweep, with a narrow 1V pulse at the marker point INPUTS Ext Trig/Gate Frequency Range: Signal Range: Min. Pulse Width: Input Impedance: DC to 1MHz for FSK; DC to 100kHz for Gate; DC to 2.5kHz for Tone and Sweep Nominal TTL level threshold; maximum input 10V 100ns for Gate/FSK; 0.2ms for Sweep and Tone Typically 10kW VCA In Frequency Range: Signal Range: Input Impedance: DC - 100kHz 2.5V for 100% level change at maximum output Typically 6kW INTERFACES (TG2000 only) Full remote control facilities are available through the RS232 or USB interfaces. RS232: Variable Baud rate (19200 max), 9-pin D-connector. As well as operating in a conventional RS-232 mode the interface can be operated in addressable mode whereby up to 32 instruments can be addressed from one RS-232 port USB: Standard USB hardware connection. Conforming USB 1.1 GENERAL Display: Data Entry: Stored Settings: Size & Weight: Power: 20 character x 4 row alphanumeric LCD Keyboard selection of mode, waveform etc.; value entry direct by numeric keys or by rotary control. Up to 9 complete instrument set-ups may be stored in battery-backed memory. 260(W) x 88(H) x 235(D) mm; 2kg (4.5lb) 100V, 110-120V or 220-240V 10% 50/60Hz, adjustable internally. 40VA max. Installation Category II. +5oC to 40oC, 20-80% RH -20oC to +60oC Indoor use at altitudes up to 2000m, Pollution Degree 2 Complies with EN6010-1 and EN61326 Phase coherent switching between two selected frequencies at a rate defined by the switching signal source. Carrier frequency: 1Hz to 10MHz/20MHz Carrier waveforms: All Switch rate: dc to 5kHz (internal), dc to 1MHz (external) Operating Range: Storage Range: Environmental: Safety & EMC: Switching signal source: Thurlby Thandar Instruments Ltd. operates a policy of continuous development and reserves the right to alter specifications without prior notice. Front panel MAN TRIG key, Internal Trigger Generator, TRIG/GATE input, or Remote Interface TG1000 & TG2000 Designed and built in Europe by: 10MHz & 20MHz DDS function generators Sweep, AM, FSK & Tone switching modes RS-232 and USB interfaces (TG2000 only) Direct Digital Synthesis Thurlby Thandar Instruments Ltd. Glebe Road, Huntingdon. Cambs. PE29 7DR United Kingdom (UK) Tel: +44 (0)1480 412451 Fax: +44 (0)1480 450409 Email: sales@tti-test.com Web: www.tti-test.com 82100-1240 Issue 2