Cost Estimate for the Fast IR Camera with a Description of each Item -------------------------------------- Initial Rev. 20-OCT-1996 Current Rev. 22-OCT-1996 This is a cost estimate for the Fast IR Camera that uses the Rockwell TCM2620 IR Array. This is an estimate of the "parts" cost to build this camera. It does not contain any engineering or other labor costs. Cost Estimate for the Fast IR Camera -------------------------------------- Components at the VME Location ------------------------------ VME Crate with Power Supplies $ 6,481 VME Interface Card (FM) $ 4,614 VME 68k Processor Card $ 1,000 est Power Supply for the Camera $ 700 Components at the Camera Location --------------------------------- Electronics Box (with fan and Air Duct) $ 500 est Camera Dewar $ ? A_Card $ 1,125 ea 4 req $ 4,500 D_Card $ 400 M_Card $ 234 The "Rock" Circuit Card $ 140 Cables to connect Camera to VME $ 1,003 TCM2620 Array Chip $ ? + -------------------- Total (less Dewar and TCM2620) $ 19,572 Description of the Items -------------------------- VME Crate with Power Supply As being supplied to the D-Zero Experiment this crate has 9U x 400mm x 21 slot mechanics, a special P2-P3 backplane, large power supplies (+5V @ 240 Amps, +3.3V @ 400 Amps, -2V @ 60 Amps, and -4.5V at 60 Amps), a 1500 cfm blower, and a water cooling heat exchanger. All of this power and cooling clearly are not required in this application where only a 68k processor card and the single interface card are to be operated. In principle a lighter duty setup would cost less but it would mean building something special for this project. VME Interface Card (FM) This card receives 128 differential ECL input signals and has a 64 bit wide differential ECL output. It has a 17 bit wide bi-directional differential ECL port and a high speed fiber optic output port which uses the Hewlett Packard G-Link protocol. This card uses either 6 or 18 Xilinx 4013 FPGA's for most of its logic. This card is a D16 A24 VME slave and is intended to use the VME port only for programming, testing, and slow I/O. In the Fast IR Camera this card would be used for timing signal generation and for multiplexing (or otherwise formatting) the data from the 4 ADC channels before it is sent to the recording host. VME 68k Processor Card In the Fast_IR_Camera application the 68k Processor Card is used to interpret commands from the host and for generating control signals at the frame rate (and slower). In the past we have used 68020 cards from Motorola (e.g. MVME135-A20). Although these cards are of a relatively old design they are inexpensive, we are experienced programming them, and one would provide all of the "cpu power" necessary for this application. Power Supply for the Camera Linear supplies to provide power to the camera itself would be located with the VME equipment. These supplies would provide + & - 10V to the camera for the analog components in the camera and +5V, -2V, and -4.5V for the digital components in the camera. Electronics Box (with cooling fan and Air Duct) This box mounts on the Camera dewar. It provides the mechanical support and shielding for the camera's electronics cards. This box would be mounted over a feed through port in the side of the dewar. There is a small fan on this box to provide cooling air for the electronics cards. In applications where it is necessary a flexible air duct will conduct the "hot" exhaust air away from the vicinity of the camera. Camera Dewar The Camera Dewar holds the TCM2620 array chip mounted on the "Rock" circuit board and provides the proper LN2 temperature environment for the operation of the array chip. A_Card Each of the four A_Card's in the camera contains the electronics necessary to service one of the four sections of the TCM2620 array. This consists of analog signal processing, a 14 bit 8 mega sample per second ADC, and line drives to send the converted signal back to the VME electronics. The analog signal processing consists of receiving the high impedance video signal from the TCM2620, providing voltage gain and DC shift, bandwidth filtering, and low impedance drive to send the signal to the ADC. The A_Card has the necessary power supply filtering for both the analog and digital supplies that it uses and the regulators to convert the + & - 10V bulk analog supplies into the proper voltages for operating the analog components. The A_Card also contains adjustable reference supplies to provide the DSUB and VCLAMP potentials to the TCM2620 array. D_Card The camera electronics contains one D_Card. The D_Card receives differential ECL timing signals on a cable from the VME "FM" card, converts these signals to CMOS levels and sends them to the TCM2620 array. The D_Card also provides four copies of the ADC clock signal, one copy going to each of the A_Cards. Filtering for the power supplies that are used by this card are provided on this card. M_Card The camera electronics box contains one M_Card. The M_Card provides a mounting place for the A_Cards and the D_Card and it provides power supply filtering and distribution to these 5 cards. Separate analog and digital ground connections are made from the four A_Cards and the D_Card through the M_Card to the camera electronics box and dewar. The M_Card contains no active components. The power supply cables from the VME equipment terminate on the M_Card. Rock Circuit Board The "Rock" is the circuit board inside the dewar that holds the socket for the TCM2620 array chip. The Rock also provides the final power supply bypass filtering and the via's to receive the bundle of wires from the feed through port on the side of the dewar. There are no active components on the Rock circuit board. The Rock is designed to provide the necessary cold finger attachment to the array chip. Cables to connect the Camera to VME Equipment The four digitized video signals from the camera are carried to the VME equipment on 17 pair twist and flat cables which use standard insulation displacement connectors. The timing signals from the VME equipment to the camera are carried on a single 17 pair twist and flat cable which uses the same type of connector as the cables above. The analog and digital power is carried from the VME equipment to the camera on separate cables. The analog power cable is a 10 conductor shielded cable and the digital power cable is a 15 conductor shielded cable. These cables would use AMP crimp contact connectors. All signaling and cables are designed so that the VME equipment and the camera can be separated by a cable run of at least 100 feet in length. TCM2620 IR Array Chip This part is manufactured by Rockwell. It is in a 68 pin leaded chip carrier package that mounts in an AMP 641749-2 socket.