This product is obsolescent and should not be used for new designs with a long lifetime.
This printed circuit board 183 x 102mm connects together the wire-wrap pins of DIN connectors on the rear of a 42E (half 19") rack. The board is pushed over the pins and is then soldered to them. Take care to leave sufficient gap between the backplane and card-frame. There are positions for 8 connectors (DIN 41612 type C, available separately). Each position has two rows of 32 pins separated by 5.08mm. The rack positions and normal functions are as follows (left to right as seen from the front of the rack):
The TDS9092 (or TDS2020F) computer, TDS9096 13-bit A to D boards, TDS973 Input/Outputs and the TDS961 PROM Programmer can be placed in any of the user application board slots.
RACK SYSTEM NEEDED
Most Eurocard racks are suitable. We suggest the following parts which make up a good-looking case which includes a rack. Order as CASE-FRAME:
Half-19" 3U Case Frame
Suitable front panel for above
16 Board guides for above
Note that you also need up to 8 wire-wrap sockets. Order them under the part number SOCKETDIN64.
These lines connect all slots on the backplane except the TDS990 power supply position. The pins connected together are the address, data and control buses, and the power lines. Other pins are left open to meet your own requirements. Names and functions refer to the TDS9092. The star * indicates active at 0V:
USE OF BACKPLANE WITH TDS971 IEEE-488 BOARD
TDS9092 The addresses 0100-0117 are already used on the TDS9092 for internal RAM. Interchange the signals to pins a4 and a5 of the TDS971 (address lines A8 and A9). This will change the address of the board from 01xx to 02xx. On the TDS9099 backplane there are links E and F which can be remade to interchange these lines to the left position on the backplane.
TDS9092 & TDS2020F Make links G and H and unmake links A and B. This will connect the +5V and -12V lines to the TDS971. Also unmake links C and D so that pins c29 and a31 are not connected across the rack; they have special functions on the TDS971.