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ITC-1600: 16-bit multi-channel data acquisition system
ITC-1600-2: dual rack version shownITC-1600 system features
I-1600 rack features
PCI-1600 features
PCI-1600e features
InstruTECH Corporation is proud to introduce the ITC-1600, expandable 16-bit data acquisition system. The ITC-1600 is not only a product of our historical commitment to designing high resolution, low-noise scientific data acquisition systems, but also a technological leap forward. The ITC-1600 utilizes the newest fiber optic and digital signal processing technologies, in addition to many of the exceptional features of its predecessors the ITC-16 and ITC-18. The ITC-1600 provides expandability and versatility that will satisfy both current and future needs.
Hardware ConfigurationThe ITC-1600 system comprises of a PCI-1600 or a PCI-1600e computer interface card, one or two I-1600 analog rack units connected by the InstruLINK fiber optic data cables. Each PCI-1600 or PCI-1600e Bus mastering host interface card supports one or two I-1600 rack units. If two rack units are used, then all input and output channels are doubled and fully synchronized. For systems requiring even more channels, multiple PCI-1600 / PCI-1600e and I-1600 units can be used. Multiple PCI-1600 / PCI-1600e cards installed in the same or in separate computers will be fully synchronized.
This split configuration offers major advantages over traditional data acquisition designs. One advantage is noise performance. Most data acquisition devices are printed circuit boards installed directly into the computer. The interior of a computer is an electrically noisy environment that will dramatically affect the noise performance of high speed D/A and A/D converters. Mounting all of the analog electronic components in an external box provides the most effective means of shielding the analog signal from this noise.
Another advantage is the capability to use the analog front end (I-1600 rack unit) with a variety of host interfaces, as they become available. Moving the I-1600 from one computer platform to another is a simple matter of using the appropriate host interface, and installing compatible software. Utilizing the same hardware when changing computer platforms provides a cost effective upgrade path to newer computer technologies without sacrificing your initial investment.
Optical Isolation
The analog electronics of the I-1600 rack unit are optically isolated from the digital circuitry of the computer via the InstruLINK fiber optic circuitry. This circuitry provides superb optical isolation, virtually eliminating ground loops, while increasing the distance between the computer and the recording setup to at least five meters. The inter-connecting fiber optic cables are small, flexible, and, unlike conventional electrical cables do not emit electromagnetic radiation.
Optical isolation provides complete electrical isolation between the computer and the measuring equipment. Computers contain digital electronics that switch at high speed, producing large electrical transients. The computer ground functions as the return path for these transients, resulting in substantial high frequency ground noise. Each I-1600 (rack unit) has a separate analog ground that is isolated from the computer ground.
Optical Isolation is essential if low-noise analog outputs are desired.
Analog I/O
Each I-1600 rack unit provides eight differential analog input channels that are separated into two banks of four. Each bank uses one 16-bit 200kHz A/D converter multiplexed into four inputs. Both A/D converters sample simultaneously and synchronously at the maximum conversion rate resulting in a total throughput of 400kHz. This unique arrangement allows pairs of channels to be digitized without phase-shift. If the bandwidth of the experiment calls for lower sampling rates, the DSP decimates and/or filters the data. An added benefit of filtering is the reduction of noise.
Each I-1600 rack unit provides four 24-bit D/A converters, stripped to 16-bit data. This results to outputs that feature high accuracy with less than 1 bit (~300 µV) of noise. This extremely low noise allows for the observation of least significant bit transitions. The D/A circuitry used in the I-1600 rack unit is temperature stabilized and “De-glitched” for ideal performance. A typical D/A circuit will have a large glitch energy around zero and major bit transitions, the I-1600's D/A converters are free from this artifact.
In addition, each I-1600 rack unit provides four 12-bit asynchronous “telegraphing” ADC channels are available for monitoring slow changing parameters.
Digital I/OEach I-1600 rack unit has twenty digital inputs and thirty-six digital output channels all sampling synchronously. The digital input channels feature level sensitive or latched modes. For maximum versatility the inputs can be inverted, allowing rising or falling edge triggering.
Available Host Interfaces
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Technical SpecificationsAnalog inputs: Number of channels 8, 2 ADC MUXA channels 0-3, MUX B channels 4-7 Input type differential, optically isolated Type of ADC successive approximation Input connector BNC on front panel Resolution 16-bit, 1 in 65536 Acquisition rate 400kHz aggregate 200kHz per ADC Input range -10.24 to +10.239Volts Aperture delay 10 ns maximum Aperture jitter 50 ps rms maximum Conversion speed software selectable minimum 5µs per ADC Differential nonlinearity ±0.002% of FSR Drift ±2 ppm/°C Input impedance 1MΩ Signal-to-noise ratio 86dB at DC to 160kHz < 1mV PP No missing codes 16-bit Crosstalk between ADC not measurable Crosstalk between MUX -110dB 20Volt 1kHz sine Maximum over voltage ±40Volts Analog outputs: Number of channels 4, individual D/A converters Output type pseudo differential optically isolated Type of DAC double buffered, multiplying Output connector BNC Resolution 24-bit converter 16-bit data (1 in 65536) Output range -10.24 to +10.239Volts Conversion speed software selectable minimum 5µs each Settling time <4µs to 0.001% Gain error 0.2% of FSR Gain linearity <2dB Drift ±4 ppm/°C, after 10 minute warm up Signal-to-noise ratio 116dB Output impedance 10Ω (for output overload protection) Short circuit to ground indefinite Current output ±20mA maximum Capacitance drive 200pF Asynchronous “telegraphing” inputs: Number of channels 4, single-ended Input connector BNC on rear panel Resolution 12-bit Acquisition rate 5kHz aggregate Input range ±10Volts Max. input over voltage ±40Volts Digital inputs: Number of inputs 20, logic level optically isolated Input type 3.3 and 5Volt logic Operational mode selectable, level or latching, active high or low Minimum pulse width 150 ns Input connectors 4 front panel BNC, 16 on rear panel connector Maximum over voltage ±30Volts D.C. Trigger In: Number of inputs 1, optically isolated Input type 3.3 and 5Volt logic Operational mode selectable, edge, level, active high or low Minimum pulse width 150 ns Input connector BNC on front panel Maximum over voltage ±30Volts D.C. Digital outputs: Number 36, optically isolated Output driver 3.3 Volt, TTL, LS, ACT, and HCT compatible Output connectors 4 on front panel BNC with LED indicators 32 on rear panel connector Sink output current 6.4 mA (front panel), 3.2 mA (rear panel) Source output current 6.4 mA (front panel), 3.2 mA (rear panel) Power-on state logic low Trigger Out: Number of outputs 1, optically isolated Output driver 3.3Volt, TTL, LS, ACT, and HCT compatible Output connector BNC on front panel Output current 6.4mA sink or source Software and Drivers: * MacOS Classic C/C++ Metrowerks libraries Carbon Driver and Framework library Wavemetrics IGOR Pro XOP’s AxoGraph MacOS X (PPC) Carbon Driver and Framework library Wavemetrics IGOR Pro Carbon XOP’s
AxoGraphX MacOS X (Intel) Framework library Wavemetrics IGOR Pro Carbon XOP’s
AxoGraphX * Windows 9x, ME, NT, 32 bit C/C++ library, DLL and driver 2000, XP, Vista Wavemetrics
IGOR Pro XOP’s AxoGraphX
Strathclyde WinWCP
* No longer supported but still
available upon request. All drivers are available for download. PCI-1600 host interface: Form factor short, 32-bit, 33MHz, 3.3 or 5Volt PCI Type Bus mastering, PCI 2.1 compliant Cable 1 pair 5 meter fiber optic 1 pair per I-1600 rack unit Connectors 2 pair InstruLINK fiber (TX/RX), Unisolated Trigger In, Unisolated Trigger Out, PLL Clock-In, PLL Clock-Out PCI-1600e host interface: Form factor short, 32-bit, 33MHz Type Bus mastering, 1X lane PCIexpress Cable 1 pair 5 meter fiber optic 1 pair per I-1600 rack unit Connectors 2 pair InstruLINK fiber (TX/RX), Unisolated Trigger In, Unisolated Trigger Out, PLL Clock-In, PLL Clock-Out A note about Macintosh G5 computers Apple has once again changed the PCI bus on their Power Mac G5 desktop computers. The latest release, as of November 2005, use’s a PCIexpress bus architecture, including Intel based systems. The PCIexpress bus IS NOT compatible with the PCI-1600 host interface. For PCIexpress computer system please order the PCI-1600e host instead.
Power Mac G5 computers before November 2005, used a 3.3 Volt PCI /PCI-X bus architecture. These systems are compatible with PCI-1600’s built after April 2004. Model Numbers: ITC-1600: Single rack system: Includes 1 I-1600 rack unit, 1 PCI-1600 and 1 pair InstruLINK fiber optic cables. ITC-1600e: Single rack system: Includes 1 I-1600 rack unit, 1 PCI-1600e and 1 pair InstruLINK fiber optic cables. ITC-1600/2: Dual rack system: Includes 2 I-1600 rack unit, 1 PCI-1600 and 2 pair InstruLINK fiber optic cables. ITC-1600/2e: Dual rack system: Includes 2 I-1600 rack unit, 1 PCI-1600e and 2 pair InstruLINK fiber optic cables. I-1600: I-1600 analog rack unit for expanding ITC-1600 system. Includes 1 pair InstruLINK fiber optic cables. OEM version also available. Please contact us with your requirements Dimensions: Width: 19" (47.5cm) Height: 1.75" (4.375cm), Depth: 6" (15 cm) Weight: 8 pounds (3.6 kg) Power requirements: 85-264VAC, 47-440 Hz, 25 Watts Warranty: Two years parts and labor
Specifications are typical at 25oC unless otherwise noted. |
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Useful Downloads |
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Download ITC-1600 literature in Adobe Acrobat format. |
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Download the ITC-1600 manual in Adobe Acrobat format. |
Specifications subject to change without prior
notice.
©2002
- 2007 InstruTECH Corporation