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| Technical Bulletin Analog Multiplexer Module (16 Channel) Airborne Data Acquisition Products MSC1000-029 DESCRIPTION The MSC1000-029 is a 16 channel analog multiplexer for use with higher level analog signals. This module is a fully programmable unit with the following salient features: FEATURES Each channel is independently programmable via DASM software. Factory set input filters Auto balance for amplifier offset 7 programmable gains (1 to 64) Programmable offset in 2.44 mV increments from -5V to +5V Four excitation voltages (+28V, +14.5 V, +12 V, and -14.5V) ZCAL, NCAL, and VCAL. Overvoltage protected to 32 VDC. Nominal channel accuracy of 0.5% "This brochure has been released into the public domain in accordance with International Traffic in Arms Regulations (ITAR) 22 CFR 120." MSC1000-029 ELECTRICAL SPECIFICATIONS Excitation (Per Module) Four voltage sources (+28V, +14.5V, +12V, and -14.5V) Total RMU excitation at full load: 1.0 A minimum for positive supplies, 250 mA minimum for negative supplies. Total RMU excitation current limit: 1.3 A maximum for positive supplies, 300 mA maximum for negative supplies. Accuracy: 1% of selected value for the +14.5V, +12V, and -14.5V supplies, 3% for the +28V supply. Load regulation: 3% from no load to full load Input Characteristics (Per Channel) Full scale range equals 5VPP differential Interfaceable with isolated sources Input impedance: 1 Megohm minimum AC CMR at a gain of 1 is 70 db at 400 Hz with a 1 Kohm unbalance Overvoltage protection to 32V Gains (Per Channel) Program selectable gains of 1, 2, 4, 8, 16, 32, and 64. Gain accuracy: 0.5% of selected value Gain temperature stability: 0.25% of selected value Linearity: 0.1% BSL Channel Offset (Per Channel) Program selectable in 2.44 mV steps from -5VDC to +5VDC referenced to output Channel offset stability 0.25% FS Single pole RC filter (lowest frequency 10 Hz) designated by dash number: -xyz where x = most significant digit y = lease significant digit z = number of zeroes Cal Types NCAL: Channel input is connected to NCAL DAC (0 to 5V in 1.22 mV increments). Accuracy at channel output: 0.5% FS, 0.75% at a gain of 64. Temperature stability at the channel output: 0.5% FS. VCAL: Channel inputs are connected to system VCAL ZCAL: Channel inputs are connected to signal ground. Balance (Per Channel) Algorithm type: Amplifier offset Balance Algorithm accuracy: 0.5% FS Sample and Hold (Per Channel) Occurs on word only Maximum sample rate: 42 K samples per second. Output (One A/D per module) A 5 volt full scale analog signal at a gain of one (1), converted to 12 bit digital word (1.22 mV/bit) 47 Friends Lane, P.O. Box 328 * Newtown, PA 18940-0328 Telephone: (215) 497-8000 * Fax: (215) 968-3214 E-Mail: sales/mktg@te.L-3com.com * www.L-3com.com/te Printed in USA QN-0049.indd/03-02 L-3 Communications Telemetry-East ISO-9001 Registered Specifications subject to change without notice |
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