SC11 Sensor Interface Analysis System
The SC11/SI is the latest version of our comprehensive site survey equipment. It features data acquisition and pre-processing by an embedded microcomputer in the Sensor Interface for enhanced performance. The separate data acquisition card (DaqCard) used by our earlier systems is not required. The data interface to the computer is through an industry standard USB connection, which enables the system to be used with most modern laptops running Microsoft Windows.
Spicer Consulting has built a world-wide reputation in magnetic field cancelling for electron microscopes and similar instruments. Today, working with equipment manufacturers and users alike, the company is recognised as an industry expert in maximising the performance of electron microscopes, electron beam lithography systems, CD-SEM and focused ion beam tools. Spicer Consulting magnetic field cancelling systems protect sensitive equipment in the world's leading laboratories, universities and semiconductor manufacturing plants, as well as in the test facilities of electron and ion beam equipment manufacturers. Its magnetic field, vibration and acoustic analysis systems have been adopted as standard equipment for the conduct of site surveys by leading equipment manufacturers.
- Windows laptop based measurement and analysis system
- Universal AC power input (100 - 240 V~)
- Interface with USB connection to laptop, supports multiple sensor types
- Data acquired and pre-processed in Interface
- Inputs for 2 x 3-axis magnetic field sensors, 3 x Wilcoxon 731A accelerometers, Brüel & Kjær precision microphone, analog signals via BNC
- Measures environmental magnetic fields, vibrations and infrasound levels
- Narrow-band and third octave spectrum analysis
- Chart recorder with data logging for long term measurements
- 20 kHz Bandwidth in Scope and Spectrum programs
- Measures 9kHz magnetic fields from wafer transport robots
- Measures DC fields from trams, trains and elevators
The SC11/SI is the latest version of our comprehensive site survey equipment. It features data acquisition and pre- processing by an embedded microcomputer in the Sensor Interface for enhanced performance. The separate data acquisition card (DaqCard) used by our earlier systems is not required. The data interface to the computer is through an industry standard USB connection, which enables the system to be used with most modern laptops running Microsoft Windows. The system is designed to be flexible and adaptable to suit customer requirements. The core system includes the Sensor Interface, Software and a custom carrying case. And a typical system also includes a DC-13 kHz three axis magnetic field sensor, an accelerometer and a precision microphone. The software suite includes three virtual instruments, an oscilloscope, a spectrum analyser and a chart recorder that display results graphically on the laptop screen. Also included are “SCplot”, a comprehensive results plotting program, “SC11 Wizard”, which aids in setting up a single measurement, and “SC11 Survey”, which automates a complete survey.
The Sensor Interface operates from universal AC power (100-240 V ~ 50/60 Hz) which is used to power all the sensors and its embedded Analog Devices Blackfin microcomputer. For long term monitoring applications, where loss of data would not be acceptable, the sensor interface can be powered from an un-interruptible power supply. Our tests with a fully charged 350W UPS from APT provided up to four hours of operation. There are inputs for two Spicer Consulting 3-axis magnetic field sensors. Sensor SC24/DC+AC and Sensor SC11/AC are compatible. If two sensors are used we recommend they are the same type to avoid confusion. There are inputs for three Wilcoxon 731A accelerometers. The inputs provide the constant current load and power supply for each Wilcoxon 731A and are suitable for most other types of piezo accelerometers when using the spectrum program. There is an input for a Brüel & Kjær 4190/2669L precision microphone. The Interface provides the special power supplies for the 2669L microphone pre-amplifier to enable the microphone to operate to its full specification. There is a general purpose DC coupled auxiliary input via a BNC connector at the back of the interface.
A multi-channel 13 bit ADC controlled by an embedded Analog Devices Blackfin Microcomputer acquires all the signals in digital format inside the Interface. The microcomputer performs extensive signal pre-processing before the signals are sent to the laptop computer through the USB connection.
This is the 3-axis magnetic field sensor most commonly used with the SC11/SI/USB system. It can measure DC and AC fields, e.g. changing DC fields from trams and elevators and AC power line fields. It has internal bias coils that are used to null the Earth’s field. The bias coil currents are reset by clicking an icon on the program screen, each time the sensor is moved. The measurement range is ± 20 mG. The sensor has low noise and when fully warmed up the DC drift is below 20μG/day. It is not recommended for measuring higher frequency fields (e.g. 9kHz from wafer transport robots). Sensor SC11/AC should be used for this purpose. (The MEDA uMAG-01N one-axis DC magnetometer is also supported).
This is a 3-axis AC magnetic field sensor with a lower bandwidth of 1 Hz and a dynamic range of 80 mG (8 mT) Pk-Pk.
Wilcoxon Research model 731A accelerometer
The Wilcoxon Research model 731A has a measurement range of 200 mg's Pk-Pk and a bandwidth of 0.1 Hz to 500 Hz when used with SC11/SI/USB system. It is suitable for the measurement of extremely low level vibrations. Its noise limit is 0.03μg/√Hz at 2Hz. The system supports simultaneous measurements by three accelerometers. Each accelerometer measures along one independent axis. With three correctly oriented accelerometers, vibration can be measured in three orthogonal axes.
Brüel & Kjær 4190 microphone
The Brüel & Kjær 4190 microphone with 2669L preamplifier connects directly to the sensor interface. It provides acoustic measurements to acoustic laboratory reference standards. It measures sound levels from 20dB to 110dB and 1.5Hz to 20kHz. It measures infrasound levels (i.e. frequencies below 20Hz) which can limit the performance of transmission electron microscopes by vibrating the sample. (The Sound Level Meter supplied with the SC11/Compact is also supported).
SC11 Compact Analysis System
SC11 Sensor Interface Analysis System
SC11 Auto Survey System
SC28 Monitoring System
If you would like to learn more about Site Survey Systems, contact our experienced technical team today. We would be happy to help you find the right solution for your needs. Contact us today!