NASA, Johnson Space Center, BE2, Houston, TX

66 -- CHARGE AMPLIFIER MODULE SOL 9BE33G27510P DUE 012695 POC WENDY BOUDREAUX, Tel:713-483-5338 Contracting Officer:LISA REA, Tel:713-483-8395 NASA is seeking thirty-two Charge Amplifier Modules to expand the existing Signal Conditioning System in the Vibration and Acoustic Test Facility from 224 channels to 256 channels. The existing signal conditioning system consists of Syminex SX500 programmable signal conditioning modules. The thirty-two new charge amplifier modules must be 100 percent compatible to the existing charge amplifier modules and the in-house programming commands to set up the configuration condition during data acquisition. The chassis housing for the new charge amplifier modules must be a standard 19-inch rack mounting and must be capable of accommodating the existing Syminex Charge Amplifier, Strain Gage Amplifier, and Integral Electronic Sensor/ Voltage Conditioner modules which can be mixed in a single chassis housing. The chassis must have a built-in control interface that allows all the modules to be commanded through the existing Syminex hand held controller or the existing personal computer in-house developed software through an RS-232 connector. The chassis holds sixteen modules and must be interchangeable with the existing Syminex chassis. It must be able to connect the external calibration signal and the current source power supply for the Integral Electronic Sensor. The charge amplifier modules must include the Integral Electronic Sensor/ Voltage Conditioner which can be selected from the existing hand held controller or existing PC computer software commands. They must include a programmable T-insert voltage for calibration. Charge input range must be 0.1 mV/pC to 1000 mV/pC with source resistance greater than 40 M-ohms. Voltage input must be +/-10V-Peak and at lease +/-30V-peak without damage. The charge mode must be able to set the sensitivity of the sensor and gain steps separately. The gain steps must be in a 10dB increment. The noise level must be less than 0.2mV-peak. The output voltage must be +/-10 V-peak linear. The frequency response must be 0.5 Hz to 100 KHz at -3dB. The modules must include overload indicators and be capable of being reset by controller or software. All the configuration settings must be saved in the module even in storage without the power supply. These charge amplifier modules must be interchangeable with the existing modules. --SMF07-A1-A6, ''Or Equal'' - Chassis with Controller, External 2 Calibration, Signal Input, and (16) isolated Integral Electronic Sensor power sources. APC05-D1-D2, ''Or Equal'' - Charge Amplifier Module with optional IE Sensor input and sensor scaling. --SMF07-A1-A6 - Chassis with Controller, External 2 Calibration, Signal Input, and (16) isolated Integral Electronic Sensor power sources. APC05-D1-D2 - Charge Amplifier Module with optional IE Sensor input and sensor scaling. --12 each SMF07-A1-A6 or equal 32 each APC05-D1-D2 or equal --Houston, Johnson Space Center --4-6 weeks after award of contract. This procurement is being conducted under the NASA JSC MidRange Test Program approved by the Office of Federal Procurement Policy on April 16, 1993. --See Note 22. --This contract will be awarded to Syminex Inc. (0018)

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