L1_RACK_VOLTAGE_MONITORING.TXT LAST UPDATE: 30-JUN-1993 This file describes the length, labeling and run synopsis for cables used in the voltage monitoring system. The lengths of the cables are as follows: Cable S/N Run to Run inside Vert. Dist in extra over to Total entry pt. racks drop M124 --------- --------- ----------- ----- ------- ----- ----- ----- VM-M101-C 60" 120" 78" 10" 20" 164" 452" VM-M102-C 60" 96" 78" 10" 20" 164" 428" VM-M103-A 60" 72" 8" 10" 20" 164" 334" VM-M103-B 60" 72" 24" 10" 20" 164" 350" VM-M103-C 60" 72" 56" 10" 20" 164" 382" VM-M104-B 60" 48" 24" 10" 20" 164" 326" VM-M104-C 60" 48" 56" 10" 20" 164" 358" VM-M105-A 60" 24" 4" 10" 20" 164" 282" VM-M105-B 60" 24" 24" 10" 20" 164" 302" VM-M105-C 60" 24" 56" 10" 20" 164" 334" VM-M106-B 60" 30" 24" 10" 20" 164" 308" VM-M106-C 60" 30" 56" 10" 20" 164" 340" VM-M107-A 108" 24" 4" 10" 20" 164" 330" VM-M107-B 108" 24" 24" 10" 20" 164" 350" VM-M107-C 108" 24" 56" 10" 20" 164" 382" VM-M108-B 108" 30" 24" 10" 20" 164" 356" VM-M108-C 108" 30" 56" 10" 20" 164" 388" VM-M109-A 156" 24" 4" 10" 20" 164" 378" VM-M109-B 156" 24" 24" 10" 20" 164" 398" VM-M109-C 156" 24" 56" 10" 20" 164" 430" VM-M110-B 156" 30" 24" 10" 20" 164" 404" VM-M110-C 156" 30" 56" 10" 20" 164" 436" VM-M111-A 204" 24" 4" 10" 20" 164" 426" VM-M111-B 204" 24" 24" 10" 20" 164" 446" VM-M111-C 204" 24" 56" 10" 20" 164" 478" VM-M112-B 204" 30" 24" 10" 20" 164" 452" VM-M112-C 204" 30" 56" 10" 20" 164" 484" VM-M114-A 288" 0" 56" 10" 20" n/a +2' 398" ---- 10038" All cables go up 12" over from M124 to M103 (36" from back of M124 rack + 44" aisle + 36" to back of M103) and down 12" except the cable to M114 which will go directly to M114 over the High Voltage racks. The run to entry point figures are related to the rack that allows entry into the racks. Thus M105 which sees 10 cables is 60" from the middle top of M103 landmark, each successive entry rack (M107, M109, M111) is 48 inches further. Whenever possible, the cables will not enter a rack to the right and backtrack but instead enter the rack to the immediate left and then across to the right if necessary. Thus M103 and M104 have long inside runs (enough to cross M105, M104 and in one case M103) while the rest have enough to cross the rack itself or an extra 6 inches if it drops into one rack and continues to the next. The vertical drops are related to where the cardfile in question is, an A cardfile is on the top, a B is in the middle and the C's are at the bottom of the rack. The 'distance in' gets you from the back of the rack to the backplane and there is 20 inches left for slack. The cables have an outer diameter of 0.353" which gives us 1 inch of circumference to work with in making labels. That should give a maximum of 7 lines of text. The typical cable can be labeled as follows: ------------------------------------------------------------------------------- Voltage Monitoring Voltage Monitoring Conn to JBOX 2 DB-9: E Conn. to ETA -13..-16 Channels: 0- 3 PHI 1..16 From M110 ETA -13..-16 Goes to JBOX 2 DB-9: E PHI 1..16 Enters rack M109 S/N = VM-M110-B S/N = VM-M110-B ------------------------------------------------------------------------------- JBOX end cardfile end The following is a synopsis of the cable runs: Cable S/N JBOX/ DB-9 Shea unit Pt. of Destination Shea letter channels entry rack crate --------- ---- ------ --------- ------ ------------ VM-M101-C 1 P10 A 32 - 35 M105 M101 ~ Trigger Framework VM-M102-C 1 P10 B 36 - 39 M105 M102 ~ Trigger Framework VM-M103-A 1 P10 C 40 - 43 M105 M103 ~ Framework Exp. VM-M103-B 1 P10 D 44 - 47 M105 M103 PHI 1..16 ETA +1..+4 VM-M103-C 1 P5 E 0 - 3 M105 M103 PHI 17..32 ETA +1..+4 VM-M104-B 1 P5 F 4 - 7 M105 M104 PHI 1..16 ETA -1..-4 VM-M104-C 1 P5 G 8 - 11 M105 M104 PHI 17..32 ETA -1..-4 VM-M105-A 1 P5 H 12 - 15 M105 M105 Second Tier ETA +8..-8 VM-M105-B 1 P11 I 48 - 51 M105 M105 PHI 1..16 ETA +5..+8 VM-M105-C 1 P11 J 52 - 55 M105 M105 PHI 17..32 ETA +5..+8 VM-M106-B 1 P11 K 56 - 59 M105 M106 PHI 1..16 ETA -5..-8 VM-M106-C 1 P11 L 60 - 63 M105 M106 PHI 17..32 ETA -5..-8 VM-M107-A 1 P6 M 16 - 19 M107 M107 Third Tier VM-M107-B 1 P6 N 20 - 23 M107 M107 PHI 1..16 ETA +9..+12 VM-M107-C 1 P6 O 24 - 27 M107 M107 PHI 17..32 ETA +9..+12 VM-M108-B 1 P6 P 28 - 31 M107 M108 PHI 1..16 ETA -9..-12 VM-M108-C 2 P10 A 32 - 35 M107 M108 PHI 17..32 ETA -9..-12 VM-M109-A 2 P10 B 36 - 39 M109 M109 Second Tier ETA +9..+16 -9..-16 VM-M109-B 2 P10 C 40 - 43 M109 M109 PHI 1..16 ETA +13..+16 VM-M109-C 2 P10 D 44 - 47 M109 M109 PHI 17..32 ETA +13..+16 VM-M110-B 2 P5 E 0 - 3 M109 M110 PHI 1..16 ETA -13..-16 VM-M110-C 2 P5 F 4 - 7 M109 M110 PHI 17..32 ETA -13..-16 VM-M111-A 2 P5 G 8 - 11 M111 M111 Second Tier ETA +17..+20 -17..-20 VM-M111-B 2 P5 H 12 - 15 M111 M111 PHI 1..16 ETA +17..+20 VM-M111-C 2 P11 I 48 - 51 M111 M111 PHI 17..32 ETA +17..+20 VM-M112-B 2 P11 J 52 - 55 M111 M112 PHI 1..16 ETA -17..-20 VM-M112-C 2 P11 K 56 - 59 M111 M112 PHI 17..32 ETA -17..-20 VM-M114-A 2 P11 L 60 - 63 M114 M114 ~ The crates marked as ~ have only a +5 and -5.2V supply. In M101 and M102 there are two bricks of each voltage running in parallel, in M114 there are single +5 and -5.2 bricks. Also note that the framework expansion has single +5 and -5.2 supplies similar to M114. These are wired as follows: M101 and M102 have red wires 1 and 2 to +5 and red wires 3 and 4 to -5.2. The framework expansion and M114 have red 1 to +5 and red 2 to -5.2; red 3 and 4 are connected to ground. At a Tier 1 backplane the power supply bars are arranged as follows looking from the back: Common Common Black 1:4 -4.5 -4.5 <--Red 1 +5.0 +5.0 <--Red 2 -5.2 <--Red 4 -2 <--Red 3 A tier 2 backplane has power bars in the following configuration: Common Common Black 1:4 -4.5 <--Red 1 -4.5 <--Red 1 -2 <--Red 2 -2 <--Red 2 ^----- or -----------^ , which ever side was most convienent +5 -5.2 <-- these are on pins, not on bars. Red 3-^ ^-Red 4 Thus, on Tier 2, 3 the red 2 and 3 wires are reversed. The way to connect the cables will be to strip about 2 feet if insulation and cut all of the conductors to about 6 inches except for the one that will have to run over to the other side of the backplane. Thus the insulated bundle of twisted pairs will go to one side with short wires to the resistor - ring terminator ends and a long red wire goes to the other side. Because it is expected to be easier to get access to the bars on the right side, the wires will be connected as indicated. The cable has red and black twisted pairs each numbered 1 to 4. The common gets all four black wires and the reds are each assigned to a voltage as indicated above.