CARA Scope of Work for NIRC2 Preamp

1. CARA will be responsible for the design, fabrication, and bench test of the NIRC2 preamp and associated cables as defined below.

2. Deliverables

The following items will be delivered to UCLA for testing with the UCLA supplied electronics prior to delivery to CalTech.

1. Fully tested preamp mounted and wired in a UCLA supplied enclosure. (1x)

2. One set of dewar to preamp cables (1x)

3. All appropriate documentation including schematics and top assy drawings.

3. Schedule

1. Final design complete by 12/8 for review by CalTech, UCLA and CARA. Comments should be provided by 12/15 along with agreement to proceed with fabrication.

2. Tested preamp and cables delivered to UCLA by 2/19/99.

4. Functions and Performance.

1. 32 channels

2. Global offset capability via an analog input. Ability to handle 0 to -1 volt offsets.

3. +/- 15 volt supply

4. Noise less than tbd

5. Speed tbd

6. Ability to drive 10 ft of twisted pair individually shielded cable.

7. Gain 4x

8. Cross Coupling < .1%

9. Detector Output Loading: Constant current source @ approx 250 uamps.

10. Detector Output Voltage Range (Cold): 0 to -0.5 volts

11. Peamp output impedance: tbd

12. Preamp output voltage range: +/-5 volts

13. Power dissipation < tbd watts

5. Packaging

1. The Level Shifter and Preamp will reside in identical enclosures

2. UCLA will supply CARA the enclosure by 1/1/99. CARA will be responsible for cutting the connector hole cutouts in the enclosure.

3. The output connectors of the Preamp enclosure will be identical to those on the dewar to allow bypassing of the preamp.

4. Connectors types and pinouts will be provided by UCLA to CARA by 12/1/98. UCLA supplied drawing "NIRC2 Exterior Connection" will be used for reference.