POWER REQUIREMENTS FOR CALORIMETER TRIGGER RACKS ================================================== Rev. 21-DEC-1992 CARD TYPE VERSUS CURRENT LIST ------------------------------- AMPS @ AMPS @ AMPS @ AMPS @ CARD TYPE +5.0V -2.0V -4.5V -5.2V --------- ------- ------- ------- ------- CAT2 0.2 9.0 20.8-29.3 --- CTFE 14.9-20.5 1.1 --- 2.3-2.4 CHTCR 21.3-27.4 1.0 --- 2.1 MBD --- --- --- 3.0 MAXIMUM CURRENT DEMAND PER BACKPLANE POWER PIN ---------------------------------------------- NUMBER OF CURRENT NUMBER OF CURRENT CARD TYPE +5.0V PINS PER PIN -2.0V PINS PER PIN --------- ---------- ------- ---------- ------- CAT2 8 25 mA 16 563 mA CTFE 32 641 mA 8 138 mA CHTCR 16 1710 mA 4 250 mA MBD -- --- -- --- NUMBER OF CURRENT NUMBER OF CURRENT CARD TYPE -4.5V PINS PER PIN -5.2V PINS PER PIN --------- ---------- ------- ---------- ------- CAT2 32 916 mA -- --- CTFE -- --- 16 150 mA CHTCR -- --- 8 266 mA MBD -- --- 8 375 mA MAXIMUM NET CURRENT DEMAND PER BACKPLANE GROUND PIN --------------------------------------------------- NUMBER OF MAXIMUM NET MAX CURRENT CARD TYPE GND PINS GND CURRENT PER GND PIN --------- --------- ----------- ----------- CAT2 38 -38.1 A -1000 mA CTFE 38 +17.3 A + 455 mA CHTCR 27 +24.3 A + 900 mA MBD 27 - 3.0 A - 111 mA GROUND RETURN REQUIREMENTS PER BACKPLANE (CELL) ----------------------------------------------- AMPS PER SUPPLY TYP MAX + MAX - --------------- ------- ------- ------- AMPS @ +5.0V + 282 + 384 + 282 AMPS @ -2.0V - 92 - 92 - 92 AMPS @ -4.5V - 166 - 166 - 234 AMPS @ -5.2V - 44 - 44 - 46 ------- ------- ------- DELTA GND CURRENT - 20 + 82 - 90 CURRENT REQUIREMENTS PER FRONT END BACKPLANE (CELL) --------------------------------------------------- AMPS @ AMPS @ AMPS @ AMPS @ CARDS PER CELL +5.0V -2.0V -4.5V -5.2V -------------- ------- ------- ------- ------- 8 CAT2 1.6 72.0 166-234 --- 16 CTFE 238-328 17.6 --- 36.8-38.4 2 CHTCR 42.6-54.8 2.0 --- 4.2 1 MBD --- --- --- 3.0 ------- ------- ------- ------- TOTAL CURRENTS 282-384 91.6 166-234 44.0-45.6 TOTAL WATTAGE 1410-1920W 183W 747-1053W 229-237W CURRENT REQUIREMENTS PER CALORIMETER TRIGGER FRONT END RACK ----------------------------------------------------------- AMPS @ AMPS @ AMPS @ AMPS @ CARD PER RACK +5.0V -2.0V -4.5V -5.2V ------------- ------- ------- ------- ------- 32 CAT2 CARDS 6.4 288 664-936 - 64 CTFE CARDS 954-1312 70.4 - 147-153 8 CHTCR CARDS 170-219 8.0 - 16.8 4 MBD CARDS - - - 12.0 1 BBB CARD - - - 6.0 ------- ----- ------- ----- TOTAL CURRENTS 1130-1537 366 664-936 181-187 CURRENT REQUIREMENTS PER SECOND TIER CAT2 ADDER RACK ---------------------------------------------------- AMPS @ AMPS @ AMPS @ AMPS @ CARD PER RACK +5.0V -2.0V -4.5V -5.2V ------------- ------- ------- ------- ------- 24 CAT2 CARDS 4.8 216 498-702 - 1 MBD CARD - - - 3 ----- ----- ------- ----- TOTAL CURRENTS 4.8 216 498-702 3 TOTAL CURRENT FOR 2 FRONTEND RACKS AND ONE SECOND TIER CAT2 RACK ---------------------------------------------------------------- AMPS @ AMPS @ AMPS @ AMPS @ RACKS OF TYPE +5.0V -2.0V -4.5V -5.2V ------------- ------- ------- ------- ------- 2 FRONT END 2260-3074 668 1328-1872 362-374 1 SECOND TIER 4.8 216 498-702 3 -------- ----- ------- ----- TOTAL CURRENTS 2265-3079 884 1826-2574 365-377 TOTAL WATTAGE 11325-15395W 1768W 8217-11583W 1898-1960W Total Watts per Three Rack Set: 23,208 - 30,706 20-Feb-89 MEASURED SUPPLY CURRENTS FOR ONE BACKPLANE CELL ----------------------------------------------- BACKPLANE AMPS @ AMPS @ AMPS @ AMPS @ AMPS @ HALF +5.0V -2.0V -4.5V -5.2V RETURN --------- ------- ------- ------- ------- ------- LEFT +110 -84 +49 -108 -31 RIGHT +104 -79 +49 ------- ------- ------- ------- ------- TOTAL CURRENTS +214 -108 -163 -31 +98 TOTAL WATTAGE 1070W + 216W + 734W + 161W = 2181W ===== 25-Jan-90 Measured Currents for a Tier 1 Cell ----------------------------------------- 21-DEC-1992 The current requirements of a Tier 1 Cell were measured using the Fluke clip on DC current meter. The Tier 1 Cell (i.e. 4 x CAT2, 8 x CTFE, 1 x CHTCR, 1 x CTMBD) was running the Tier 1 Random test program during these measurements. The total current drawen by a Tier 1 Card File Backplane should be about twice the measured values (there will be 2 of everything except for the CTMBD which draws about 2 amps of -5.2 and a little -2.0). +5.0V -2.0V -4.5V -5.2V RETURN --------- ------- ------- ------- ------- ------- Measured not Currents 106.6 60.1 90.1 23.4 measured Measured Power Pan 5.047 2.095 4.602 5.222 --- Voltage Double not the Measured 213.1 120.2 180.2 46.8 measured Current Watts 1075.5 251.8 829.3 244.4 per Cardfile per Supply Total Watts per Cardfile 2401 Watts The calibration of the Fluke clip on DC current meter was checked by comparing it was the good shunt in the "toaster box" at various currents. Toaster Box Fluke Clip On Shunt Current Current --------------- --------------- 12.4 12.4 29.5 29.7 95.9 97.1 179.7 182.3 180.1 182.6