NASA/Lyndon B. Johnson Space Center, Houston Texas, 77058-3696, Mail Code: BE

59 -- REAL- TIME DATA ACQUISITION SYSTEM FOR X-38 SOL 9BE13-09-8-02P DUE 011098 POC Lisa Rea-Phillips, Contracting Officer, Phone (281) 483-8395, Fax (281) 244-5337, Email lreaphil@ems.jsc.nasa.gov WEB: Click here for the latest information about this notice, http://procurement.nasa.gov/EPS/JSC/date.html#9BE13-09-8-02P. E-MAIL: Lisa Rea-Phillips, lreaphil@ems.jsc.nasa.gov. NASA/JSC plans to issue a Request for Offer (RFO) for a real-time data acquisition system. This system will hereafter be referred to as the Real-time Data Acquisition System (RTDAS). A miniaturized and avionics-qualified multichannel data acquisition system is required for the NASA Space Flight Test Vehicle for the X-38 Crew Return Vehicle Project. The RTDAS shall interface with various analog & digital sensors and function as a stand alone, real time data feedback system streaming pulse code modulated (PCM) data to a VME (Versa Module Europe) based master/servo controller system. The PCM data steam shall be decommutated and stored in a current value buffer by the master controller. The RTDAS shall be designed to provide a typical 50 Hz sampling rate per channel for a minimal system configuration of 120 input channels. The RTDAS will consist of multiple units (no less than 4 and no more than 8), each of which has identical hardware configuration. The RTDAS system architecture shall be comprised of a main frame or main section to provide system overhead functionality like DC power conversion, high speed serial communication interface, system control, PCM data encoding, and transmission. A specified set of digital and analog input conditioning and acquisition modules shall be offered to fill the main frame interface slots or interconnect with the main section to allow custom user configurability. The system operation shall be based upon a firmware controller that is preconfigured via the serial interface and setup software resident in a personal computer (PC) once the system configuration is downloaded. The RTDAS shall function as configured in a stand-alone mode with no interconnection to the PC. All configuration formats shall reside in non-volatile memory and any changes will require reconfiguration via the PC setup system. Once configured, the firmware controller controls the signal conditioning parameters of each input module, controls sample and transmission rate, and synchronizes data sample for phase coherence. If the RTDAS is configured with a memory module, the controller shall control data sample storage into the memory module. The controller shall encode acquired data into PCM. Data shall be transmitted using IRIG-106-93 or later pulse code modulation protocols. Bi-Phase-L and Non-Return-Zero-L (NRZ-L) data transmission protocols shall be supported. Minimum channel capacity of the complete system shall be as follows: 192 High-level single-ended input channels 144 Low-level differential input channels with sensor excitation 48 Bridge Completion circuits for single active element strain gages 48 Circuits for Resistance Temperature Detectors 180 Thermocouple channels 288 Digital inputs (TTL) 32 RS-422 serial inputs The Government intends to acquire a commercial item using FAR Part 12. The SIC Code and Size Standard are 3829 and 500 employees, respectively. The DPAS Rating for this procurement is DO-C9E. The provisions and clauses in the RFO and model contract are those in effect through FAC 97-01. All qualified responsible sources may submit an offer which shall be considered by the agency. The anticipated release date of the RFO is on or about 12/15/97 with an anticipated offer due date of on or about 01/10/97. An ombudsman has been appointed -- See Internet Note "B". The solicitation and any documents related to this procurement will be available over the Internet. These documents will be in Microsoft Office Suite (Word 6.0, Excel 5.0, PowerPoint 4.0) format and will reside on a World Wide Web (WWW) server, which may be accessed using a WWW browser application. The WWW address, or URL of the NASA/JSC Business Opportunities home page is http://procurement.nasa.gov/EPS/JSC/class.html. Prospective offerors shall notify this office of their intent to submit an offer. It is the offeror's responsibility to monitor this site and/or the CBD for the release of the solicitation and amendments (if any). Potential offerors will be responsible for downloading their own copy of the solicitation and amendments (if any). Any referenced notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nnotes.htm. (0329)

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