Technical Specifications MAINS ANALYSER Measurement Circuit: Current Rating: Single Phase with standard mains connector. 16A rms continuous, or national connector rating if lower. Voltage Ranges: 115V (200V pk) 230V (400V pk). Current Ranges: 24mA pk to 400A pk in fifteen 2:1 ranges. Frequency Range: 43 - 67 Hz. Shunt Resistance: 3mW. Sampling Rate: 300 points per cycle. Basic Accuracy: Better than 0.2% 1mA, up to 16A. Measured Parameters: Vrms, Vpk, Arms, Apk, Crest factors, THD, W, VA, Power factor, Frequency, Inrush current. Display Modes: Tabular display of all parameters including latest and highest inrush current. Waveform graph display of voltage and current with normal, max hold, accumulate and multiple cycle display. Monitor Outputs: Re-constructed Voltage and Current Signals. HARMONICS ANALYSER Measurements: 1st harmonic to 40th harmonic. Measurement processing for both 2006 and 2000 editions of EN61000-3-2. Continuous calculation, analysis and assessment of unfiltered, filtered, average, minimum and maximum current harmonic levels and limits. Continuous measurement and assessment of supply waveform and harmonics. Current Rating: 16A rms continuous, or national connector rating if lower. Voltage Ranges: 115V (200V pk) 230V (400V pk). Current Ranges: 24mA pk to 400A pk in fifteen 2:1 ranges. Frequency Range: 43 - 67 Hz. Shunt Resistance: 3mW. Transform Windows: Continuous 4, 10, 12 or 16 cycle Discrete Fourier Transforms. Basic Accuracy: Better than 5% of limit or 0.2% of selected range (whichever is the greater) 1mA. Display Modes: Display of load supply assessment for voltage, harmonics, crest limits and frequency against requirements of EN61000-3-2. Histogram or tabular display of supply voltage harmonics. Histogram display of current harmonics with limits, Min. hold, Max. hold and percentage of limit display options. Tabular display of current harmonics showing present values, limits, average values, average as percent of limit, maximum values, maximum as percent of limit and pass or fail assessment for each harmonic. Test Control: Untimed, manually timed or automatically timed tests; user-defined test time. Limits automatically determined from EN61000-3-2 for appropriate class; Class C and Class D limits can be automatically calculated from power measurements or from ratings declared by the user. Minimum and maximum power thresholds for limits can be changed by the user. Facility for declaring supply voltages other than 230V and deriving appropriate limits. Facility for insetting test limits. Report Printing: Direct printer connection for hard-copy report with user-entered narrative, supply voltage assessment and current harmonic analysis and assessment. VOLTAGE FLUCTUATIONS & FLICKER METER Measurements: Current Rating: Voltage Ranges: Fluctuation Range: Flickermeter Range: Voltage fluctuations dmax, dc, d(t) and flicker Pst and Plt to EN61000-3-3 and EN61000-4-15. 16A rms continuous, or national connector rating if lower. 115V (200V pk) 230V (400V pk). 25% max. (relative to nominal voltage) Voltage change up to 20% (sinewave change) or 10% (low repetition rate rectangular change) relative to AGC level. Equivalent to 6400 pu on 8.8 Hz sinewave. Flickermeter AGC: Flickermeter Accuracy: Frequency Range: Report Printing: Up to 5%. Better than 5% for Pst range 0*7 to 10*0. 50 Hz (operates over 43 - 67 Hz). Tabular listing of voltage variations, Pst classifier and Pst in each Plt interval. GENERAL Display: Clock: Interfaces: Instrument Supply: Operating Range: Storage Range: Dimensions: Weight: Safety: EMC Compliance: 320 x 240 pixel backlit LCD. Realtime clock for time/date stamping of Report data. Parallel Printer, RS-232, USB. 230V or 115V 14%, 48 to 65Hz. +5C to 40C, 20-80% RH. -10C to +60C. 357 x 132 x 235mm (WxHxD) 4.4 kg Complies with EN61010-1 Complies with EN61326-1 THURLBY THANDAR INSTRUMENTS HA1600A FREE FIRMWARE UPDATES Changes to measurement methods required by occasional updates to the EN61000-3-2 & EN61000-3-3 standards will generally require just an instrument firmware update. So far, it has beeb possible to upgrade all HA1600A and HA1600 models ever built to meet the latest requirements. To upgrade firmware and to check what revisions of the standard are now supported, follow links from the Support page of the TTi web site. HA-PC LINK PLUS SOFTWARE HA-PC LINK PLUS is PC (Windows) software supplied with the HA1600A. It can communicate with the instrument through either an RS232 or a USB connection. It is intended to assist users in taking routine compliance measurements and archiving the results. The PC is used for configuration, display and data archiving only; all real time data handling and measurement processing continues to be performed by the Digital Signal Processor in the instrument. The performance of the PC does not affect the accuracy of the measurement results, and so there is no need for the either the PC or its software to be covered by a calibration certificate. AC1000A LOW DISTORTION POWER SOURCE Input Voltage: Supply Tolerances: Output Voltage: Output Distortion: Output Current: Output Power: Input Connection: Output Connection: Protection: Operating Range: Storage Range: Environmental: Safety: EMC: Size and Weight: Factory built to 220V to 240V, 110V to115V or 100V. Factory configure to 50Hz or 60Hz. Installation Category II. Voltage 10%. Frequency 1% Tracks the amplitude of the fundamental of the input voltage. A variable voltage input may be used to adjust the output voltage to within the limits specified by EN61000-3-2. Will meet the requirements of EN61000-3-2 for all normal levels of input voltage distortion. Maximum continuous output current is 4*4A (10A peak). Maximum output power is input voltage x 4*4 VA IEC connector; front panel switch. U.K., Schuko, or other national outlet sockets. Load power switch can be set to DIRECT or CORRECTED for `A-B' comparisons. Thermal trip automatically diverts load to a DIRECT connection in the event of thermal overload. +5C to +35C at full rated output; 20% to 80% RH (non-condensing). -40C to +70C Indoor use at altitudes to 2000m, Pollution Degree 2. Complies with EN61010-1 Complies with EN31326-1 357 x 132 x 235mm mm (W x H x D); 5.5kg. Thurlby Thandar Instruments Ltd. operates a policy of continuous development and reserves the right to alter specifications without prior notice. Harmonics, Flicker and Power Analyser high speed and high accuracy power measurements compliance quality harmonics analysis to EN61000-3-2 Designed and built in Europe by: compliance quality flicker measurement to EN61000-3-3 optional low-distortion 1kW AC power source (AC1000A) Thurlby Thandar Instruments Ltd. Glebe Road, Huntingdon. Cambs. PE29 7DR United Kingdom Tel: +44 (0)1480 412451 Fax: +44 (0)1480 450409 Email: info@aimtti.com Web: www.aimtti.com 82100-1260 Iss. 2A HA1600A Power and Harmonics Analyser Harmonics analysis to EN61000-3-2 High speed compliance quality measurements u u u u u u u u u u u Compliance-quality harmonics analyser Compliance-quality fluctuations & flicker meter Optional low distortion 1kW power source The HA1600A is a high speed, high accuracy ac power analyser for single phase loads of up to 16 amps RMS. All electrical equipment sold within the EEC must comply with legislation relating to the harmonics content of the current waveform. The AC1000A is a low cost pure power source designed specifically for use with a harmonics analyser such as the HA1600A. Dual power cables allow the supply to the load to be independent of the supply to the instrument. The output to the load is via a front panel mounted `standard' mains connector. A wide range of power connectors is available including most national types. The HA1600A has been designed to make these measurements both quick and simple. It measures harmonics from the 1st to the 40th and updates the display in real time. The HA1600A can operate as a compliance quality flicker and fluctuations meter in conformance with EN61000-3-3 and EN61000-4-15. Measures power, voltage, current, phase angle etc. Tabular and histogram display of harmonics Voltage and current waveform displays Continuous analysis with real-time graphical update Compliance quality measurements to EN61000-3-2/-3 Wide range of national power connectors available Parallel printer and RS232 and USB interfaces PC control and documentation software supplied AC1000A u High performance power analyser The HA1600A can measure Watts, VA, Volts rms, Volts peak, Amps rms, Amps peak, Crest factors, THD, Power factor, Frequency and Inrush current. HA1600A u Fluctuations & flicker measurement to EN61000-3-3 Provides an EN61000-3-2 compliant source 1000W power capability at 230V Up to 4*4A rms load current and up to 10A peak currents Comprehensive overload protection Connection via standard national power connector Overview The HA1600A is a fast, easy to use mains and harmonics analyser with a large and high resolution graphical display, capable of continuous real-time analysis. The HA1600A is intended primarily as a dedicated harmonics and flicker analyser for compliance quality measurements, but it can also be used as a general purpose mains analyser. The unit is available with range of power connectors to suit different national standards. A printer interface is included for record keepinga/archiving, along with RS-232 and USB interfaces for PC connectivity. The HA1600A is suitable for both the product development environment, and for production line test verification. The large display can show multiple parameters simultaneously as well as graphical representations of voltage and current waveforms. HA-PC Link Plus is Windows based sofware supplied with the HA1600A. It is intended to assist users in taking routine compliance measurements and archiving the results. It permitts compliance quality measurements to EN61000-3-2 in situations where the quality of the AC supply is poor or variable, without the expense of a full AC power source. A current measurement method can be used, as an alternative to voltage measurement, thus eliminating the need for a reference impedance. Flicker severity is measured in terms of Pst and Plt using analysis periods as defined within the standard. Simultaneously full analysis of voltage variations is performed, including the calculation of the maximum value d m a x , the difference between steady states dc, and the change characteristic d(t). EN61000-3-2 requires that the source supply provides a pure voltage waveform to the equipment under test. The harmonic currents can differ significantly when a pure source is used, so for true compliance measurements it is important that any testing is performed with a device such as the AC1000A. Because of the large increase in the peak currents that can result from having a pure sinewave maims voltage supply, the AC1000A is also very useful for stress testing a wide variety of power supplies types within electronic equipment. Compact and portable, the AC1000A is rated at 1000 V*A for 230 V operation at up to 35C ambient. Maximum continuous rms current is 4.4A with a peak current capability of 10A. Support is provided for both the 2006 and 2000 editions of EN61000-3-2. Capabilities include continuous monitoring of the supply voltage, continuous automatic calculation of harmonic limits, and timed test sequences with analysis of fluctuating harmonics. Digital interfaces and PC software It can communicate with the instrument through either an RS232 or a USB connection. The AC1000A is an innovative, low cost, pure power source designed specifically for use with a harmonics analyser such as the TTi HA1600A. In a typical factory environment this distortion is so significant that it is easily visible using the HA1600A waveform display. It is suitable for pre-compliance measurements using a normal mains supply and is capable of full compliance measurements to EN61000-3-2 in conjunction with a suitable power source such as the AC1000A. Dual 16 bit Analog to Digital converters continuously sample both voltage and current and give a wide dynamic range. A fast Digital Signal Processor gives the performance needed for continuous real-time analysis of the data. Advanced algorithms yield accurate results, using extended precision or floating point arithmetic wherever necessary. The AC supply available at a standard wall socket is usually distorted. This comes about because of nonlinear loads (non-resistive loads) on the AC supply such as t r a n s f o rm e rs , f l u o re s c e n t l i g h t s , switched-mode power supplies etc. The effect of this is to flatten off the top of the sine wave causing significant distortion. Voltage and current waveforms. The mains voltage purity has been restored using an AC1000A. Compare this with the uncorrected mains voltage shown in the instrument illustration. The HA1600A incorporates both RS232, and USB interfaces for use with a PC, and a Centronics parallel interface for direct connection to a printer. HA-PC Link Plus software is supplied with the instrument to assist users in taking routine compliance measurements and archiving the results. The firmware of the instrument is stored in flash memory and can be updated via RS232 or USB as the requirements of the standards evolve. Data updating is continuous, permitting real-time viewing on the PC. Harmonics can be displayed on the PC as tabular reports or as graphical histograms. Sections of the HA-PC Link Plus screen HA1600A Power and Harmonics Analyser Harmonics analysis to EN61000-3-2 High speed compliance quality measurements u u u u u u u u u u u Compliance-quality harmonics analyser Compliance-quality fluctuations & flicker meter Optional low distortion 1kW power source The HA1600A is a high speed, high accuracy ac power analyser for single phase loads of up to 16 amps RMS. All electrical equipment sold within the EEC must comply with legislation relating to the harmonics content of the current waveform. The AC1000A is a low cost pure power source designed specifically for use with a harmonics analyser such as the HA1600A. Dual power cables allow the supply to the load to be independent of the supply to the instrument. The output to the load is via a front panel mounted `standard' mains connector. A wide range of power connectors is available including most national types. The HA1600A has been designed to make these measurements both quick and simple. It measures harmonics from the 1st to the 40th and updates the display in real time. The HA1600A can operate as a compliance quality flicker and fluctuations meter in conformance with EN61000-3-3 and EN61000-4-15. Measures power, voltage, current, phase angle etc. Tabular and histogram display of harmonics Voltage and current waveform displays Continuous analysis with real-time graphical update Compliance quality measurements to EN61000-3-2/-3 Wide range of national power connectors available Parallel printer and RS232 and USB interfaces PC control and documentation software supplied AC1000A u High performance power analyser The HA1600A can measure Watts, VA, Volts rms, Volts peak, Amps rms, Amps peak, Crest factors, THD, Power factor, Frequency and Inrush current. HA1600A u Fluctuations & flicker measurement to EN61000-3-3 Provides an EN61000-3-2 compliant source 1000W power capability at 230V Up to 4*4A rms load current and up to 10A peak currents Comprehensive overload protection Connection via standard national power connector Overview The HA1600A is a fast, easy to use mains and harmonics analyser with a large and high resolution graphical display, capable of continuous real-time analysis. The HA1600A is intended primarily as a dedicated harmonics and flicker analyser for compliance quality measurements, but it can also be used as a general purpose mains analyser. The unit is available with range of power connectors to suit different national standards. A printer interface is included for record keepinga/archiving, along with RS-232 and USB interfaces for PC connectivity. The HA1600A is suitable for both the product development environment, and for production line test verification. The large display can show multiple parameters simultaneously as well as graphical representations of voltage and current waveforms. HA-PC Link Plus is Windows based sofware supplied with the HA1600A. It is intended to assist users in taking routine compliance measurements and archiving the results. It permitts compliance quality measurements to EN61000-3-2 in situations where the quality of the AC supply is poor or variable, without the expense of a full AC power source. A current measurement method can be used, as an alternative to voltage measurement, thus eliminating the need for a reference impedance. Flicker severity is measured in terms of Pst and Plt using analysis periods as defined within the standard. Simultaneously full analysis of voltage variations is performed, including the calculation of the maximum value d m a x , the difference between steady states dc, and the change characteristic d(t). EN61000-3-2 requires that the source supply provides a pure voltage waveform to the equipment under test. The harmonic currents can differ significantly when a pure source is used, so for true compliance measurements it is important that any testing is performed with a device such as the AC1000A. Because of the large increase in the peak currents that can result from having a pure sinewave maims voltage supply, the AC1000A is also very useful for stress testing a wide variety of power supplies types within electronic equipment. Compact and portable, the AC1000A is rated at 1000 V*A for 230 V operation at up to 35C ambient. Maximum continuous rms current is 4.4A with a peak current capability of 10A. Support is provided for both the 2006 and 2000 editions of EN61000-3-2. Capabilities include continuous monitoring of the supply voltage, continuous automatic calculation of harmonic limits, and timed test sequences with analysis of fluctuating harmonics. Digital interfaces and PC software It can communicate with the instrument through either an RS232 or a USB connection. The AC1000A is an innovative, low cost, pure power source designed specifically for use with a harmonics analyser such as the TTi HA1600A. In a typical factory environment this distortion is so significant that it is easily visible using the HA1600A waveform display. It is suitable for pre-compliance measurements using a normal mains supply and is capable of full compliance measurements to EN61000-3-2 in conjunction with a suitable power source such as the AC1000A. Dual 16 bit Analog to Digital converters continuously sample both voltage and current and give a wide dynamic range. A fast Digital Signal Processor gives the performance needed for continuous real-time analysis of the data. Advanced algorithms yield accurate results, using extended precision or floating point arithmetic wherever necessary. The AC supply available at a standard wall socket is usually distorted. This comes about because of nonlinear loads (non-resistive loads) on the AC supply such as t r a n s f o rm e rs , f l u o re s c e n t l i g h t s , switched-mode power supplies etc. The effect of this is to flatten off the top of the sine wave causing significant distortion. Voltage and current waveforms. The mains voltage purity has been restored using an AC1000A. Compare this with the uncorrected mains voltage shown in the instrument illustration. The HA1600A incorporates both RS232, and USB interfaces for use with a PC, and a Centronics parallel interface for direct connection to a printer. HA-PC Link Plus software is supplied with the instrument to assist users in taking routine compliance measurements and archiving the results. The firmware of the instrument is stored in flash memory and can be updated via RS232 or USB as the requirements of the standards evolve. Data updating is continuous, permitting real-time viewing on the PC. Harmonics can be displayed on the PC as tabular reports or as graphical histograms. Sections of the HA-PC Link Plus screen Technical Specifications MAINS ANALYSER Measurement Circuit: Current Rating: Single Phase with standard mains connector. 16A rms continuous, or national connector rating if lower. Voltage Ranges: 115V (200V pk) 230V (400V pk). Current Ranges: 24mA pk to 400A pk in fifteen 2:1 ranges. Frequency Range: 43 - 67 Hz. Shunt Resistance: 3mW. Sampling Rate: 300 points per cycle. Basic Accuracy: Better than 0.2% 1mA, up to 16A. Measured Parameters: Vrms, Vpk, Arms, Apk, Crest factors, THD, W, VA, Power factor, Frequency, Inrush current. Display Modes: Tabular display of all parameters including latest and highest inrush current. Waveform graph display of voltage and current with normal, max hold, accumulate and multiple cycle display. Monitor Outputs: Re-constructed Voltage and Current Signals. HARMONICS ANALYSER Measurements: 1st harmonic to 40th harmonic. Measurement processing for both 2006 and 2000 editions of EN61000-3-2. Continuous calculation, analysis and assessment of unfiltered, filtered, average, minimum and maximum current harmonic levels and limits. Continuous measurement and assessment of supply waveform and harmonics. Current Rating: 16A rms continuous, or national connector rating if lower. Voltage Ranges: 115V (200V pk) 230V (400V pk). Current Ranges: 24mA pk to 400A pk in fifteen 2:1 ranges. Frequency Range: 43 - 67 Hz. Shunt Resistance: 3mW. Transform Windows: Continuous 4, 10, 12 or 16 cycle Discrete Fourier Transforms. Basic Accuracy: Better than 5% of limit or 0.2% of selected range (whichever is the greater) 1mA. Display Modes: Display of load supply assessment for voltage, harmonics, crest limits and frequency against requirements of EN61000-3-2. Histogram or tabular display of supply voltage harmonics. Histogram display of current harmonics with limits, Min. hold, Max. hold and percentage of limit display options. Tabular display of current harmonics showing present values, limits, average values, average as percent of limit, maximum values, maximum as percent of limit and pass or fail assessment for each harmonic. Test Control: Untimed, manually timed or automatically timed tests; user-defined test time. Limits automatically determined from EN61000-3-2 for appropriate class; Class C and Class D limits can be automatically calculated from power measurements or from ratings declared by the user. Minimum and maximum power thresholds for limits can be changed by the user. Facility for declaring supply voltages other than 230V and deriving appropriate limits. Facility for insetting test limits. Report Printing: Direct printer connection for hard-copy report with user-entered narrative, supply voltage assessment and current harmonic analysis and assessment. VOLTAGE FLUCTUATIONS & FLICKER METER Measurements: Current Rating: Voltage Ranges: Fluctuation Range: Flickermeter Range: Voltage fluctuations dmax, dc, d(t) and flicker Pst and Plt to EN61000-3-3 and EN61000-4-15. 16A rms continuous, or national connector rating if lower. 115V (200V pk) 230V (400V pk). 25% max. (relative to nominal voltage) Voltage change up to 20% (sinewave change) or 10% (low repetition rate rectangular change) relative to AGC level. Equivalent to 6400 pu on 8.8 Hz sinewave. Flickermeter AGC: Flickermeter Accuracy: Frequency Range: Report Printing: Up to 5%. Better than 5% for Pst range 0*7 to 10*0. 50 Hz (operates over 43 - 67 Hz). Tabular listing of voltage variations, Pst classifier and Pst in each Plt interval. GENERAL Display: Clock: Interfaces: Instrument Supply: Operating Range: Storage Range: Dimensions: Weight: Safety: EMC Compliance: 320 x 240 pixel backlit LCD. Realtime clock for time/date stamping of Report data. Parallel Printer, RS-232, USB. 230V or 115V 14%, 48 to 65Hz. +5C to 40C, 20-80% RH. -10C to +60C. 357 x 132 x 235mm (WxHxD) 4.4 kg Complies with EN61010-1 Complies with EN61326-1 THURLBY THANDAR INSTRUMENTS HA1600A FREE FIRMWARE UPDATES Changes to measurement methods required by occasional updates to the EN61000-3-2 & EN61000-3-3 standards will generally require just an instrument firmware update. So far, it has beeb possible to upgrade all HA1600A and HA1600 models ever built to meet the latest requirements. To upgrade firmware and to check what revisions of the standard are now supported, follow links from the Support page of the TTi web site. HA-PC LINK PLUS SOFTWARE HA-PC LINK PLUS is PC (Windows) software supplied with the HA1600A. It can communicate with the instrument through either an RS232 or a USB connection. It is intended to assist users in taking routine compliance measurements and archiving the results. The PC is used for configuration, display and data archiving only; all real time data handling and measurement processing continues to be performed by the Digital Signal Processor in the instrument. The performance of the PC does not affect the accuracy of the measurement results, and so there is no need for the either the PC or its software to be covered by a calibration certificate. AC1000A LOW DISTORTION POWER SOURCE Input Voltage: Supply Tolerances: Output Voltage: Output Distortion: Output Current: Output Power: Input Connection: Output Connection: Protection: Operating Range: Storage Range: Environmental: Safety: EMC: Size and Weight: Factory built to 220V to 240V, 110V to115V or 100V. Factory configure to 50Hz or 60Hz. Installation Category II. Voltage 10%. Frequency 1% Tracks the amplitude of the fundamental of the input voltage. A variable voltage input may be used to adjust the output voltage to within the limits specified by EN61000-3-2. Will meet the requirements of EN61000-3-2 for all normal levels of input voltage distortion. Maximum continuous output current is 4*4A (10A peak). Maximum output power is input voltage x 4*4 VA IEC connector; front panel switch. U.K., Schuko, or other national outlet sockets. Load power switch can be set to DIRECT or CORRECTED for `A-B' comparisons. Thermal trip automatically diverts load to a DIRECT connection in the event of thermal overload. +5C to +35C at full rated output; 20% to 80% RH (non-condensing). -40C to +70C Indoor use at altitudes to 2000m, Pollution Degree 2. Complies with EN61010-1 Complies with EN31326-1 357 x 132 x 235mm mm (W x H x D); 5.5kg. Thurlby Thandar Instruments Ltd. operates a policy of continuous development and reserves the right to alter specifications without prior notice. Harmonics, Flicker and Power Analyser high speed and high accuracy power measurements compliance quality harmonics analysis to EN61000-3-2 Designed and built in Europe by: compliance quality flicker measurement to EN61000-3-3 optional low-distortion 1kW AC power source (AC1000A) Thurlby Thandar Instruments Ltd. Glebe Road, Huntingdon. Cambs. PE29 7DR United Kingdom Tel: +44 (0)1480 412451 Fax: +44 (0)1480 450409 Email: info@aimtti.com Web: www.aimtti.com 82100-1260 Iss. 2A Product Summary Company name and product brands Laboratory Power Supplies Bench and system power supplies from 30 watts up to 1200 watts using linear, mixed-mode and PowerFlex regulation technologies. Thurlby Thandar Instruments Ltd. (TTi) is one of Europe's leading manufacturers of test and measurement instruments. Waveform Generators Analog and digital (DDS) function generators, true arbitrary generators, arbitrary/function generators and pulse generators. In the future, however, the full product range will be branded Aim-TTi. Products have been sold under two brand names: TTi and Aim. 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) Precision Measurement Instruments Benchtop DMMs, frequency counters, component measurement instruments (LCR), electronic dc loads, current probes. 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 RF and EMC Test Equipment Spectrum analyzers, signal generators, frequency counters, power meters, emc measurement instruments. 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. Designed and built in Europe by: 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