U.S. Department of Commerce, National Data Buoy Center, Stennis Space Center, MS 39529-6000

66 -- HIGH FREQUENCY DIGITAL DATA ACQUISITION SYSTEM SOL RFO 13-SSC-0-95-1 DUE 121395. Contact Gregory Fletcher, Contract Specialist, 601-688-2223/Harold G. Taulbee, Contracting Officer, 601-688-1640. NASA/SSC plans to issue a Request for Offer (RFO) to procure a High Frequency Digital Data Acquisition, Recording, Archiving, and Playback System (HFDAS) for the use with the Space Shuttle Main Engine (SSME) testing at Stennis Space Center. To reduce project risk only off-the-shelf equipment utilizing current proven technology shall be considered. The HFDAS assemblies shall be housed in close proximity to the engine tests, in a blast resistant, environmentally controlled area. The system shall be capable of acquiring data at a dual sample rate per channel for a minimum of 128 analog channels. Analog signal input voltage shall range plus/minus 10V (differential input). Dual sample rates shall be 10.24 ksps (low sample rate) and 102.4 ksps (high sample rate) and be non-aliased. The system shall provide a minimum of 64 TTL input discrete channels, 16 TTL output discrete channels and 16 channels of optically isolated digital inputs. The system shall be capable of receiving and time tagging (IRIG-B) and storing both sample rates in a real time digital format continuously for a minimum of 1300 seconds on separate storage media. The system shall provide archiving of the high sample rate data post-test on a removable, industry standard 8mm tape. The system shall have a measurement accuracy of plus/minus 0.05% of FS or better, inclusive of all contributing errors. Bandwidth input shall be DC to 40 KHz The system shall provide post-test playback capability in digital and ana log reproduction forms as well as provide post-test analyses capabilities. The system control functions shall be analogous to an analog tape recorder and be controllable from the front panel or via remote control. The system shall be modular and expandable in design and compatible with standard 19'' racks. The vendor shall be capable of providing the extract proposed demonstration system for a SSC on-site evaluation before contract award. The vendor shall be capable of delivering a complete order within 120 days. This solicitation will be released via the NASA Acquisition Internet Service (NAIS). All potential offerors will be responsible for downloading their own copy of the solicitation with hard copies being made available on request, but the closing date will be the same as that required for the NAIS released solicitation. It is the offerors responsibility to monitor NAIS for solicitation release as the solicitation will be released as soon as practicable whether prior or subsequent to November 8, 1995. Transmission by facsimile at 601-688-1141 or by internet E-mail to Gregory.Fletcher @SSC.NASA.GOV is acceptable. Descriptive literature of proposed system shall be submitted. (298)

Loren Data Corp. http://www.ld.com (SYN# 0294 19951026\66-0001.SOL)