Trigger crate/board power measurements 
======================================

Measured at teststand mostly with DCC connected (ie. clock running),
but interface cables are not connected so that no data activity.
 
                +5V    -5V    +12V    -12V    Power  
Empty crate       4      2     0.2     0.2    30W 
DCC               1      3     0.2     0.0    20W 
DCC+Crate         4      5     0.3     0.2    55W 
GLT               2      0       0       0   5-10W                
GLT+GLTi(new)     3      0       0       0  10-15W 
Old TSF           8      1       0       0    40W 
Old TSF+TSFi      9     1-2      0       0    55W 
BLT+BLTi          3      0       0       0    20W 
ZPD+ZPDi          5      0       0       0    25W 
TSF+TSFi          2      1       0       0    15W  (new 3-chip)

IR2 TSFX crate  181     33     1.7       0  1105W  (1105-55)/16=66
IR2 TSFY crate   86     18     0.9       0   538W  ( 538-55)/8 =60
IR2 BLT/PTD     100      5     0.2     0.0   527W 

TSF "activity" 10-15W per board 
New TSF full board + TSFi ~15+5=20W  at rest     
                  +15W activity=35W                     +5V  -5V  
=> New TSFX crate = 35*16 + 55 = 615W * 1.5   = 920W     68   37   
   New TSFY crate = 35*8  + 55 = 335W * 1.5   = 503W     36   21 
   New BLT/ZPD crate = (20+15 + 8*(25+15) + 55)*1.5
                                              = 615W     74    5       
The request sent to Ray for the power:

Hi Ray,
  I made some measurements of new and old board power consumptions and
came up with some reasonably conservative estimates. The main difficulty
is how much extra power is consumed when things are all connected and
running. I used the old TSFs as a gauge:
  Running at IR2:       ~65-70W per TSF/TSFi pair
  At rest - No cables:  ~55W           "
The running activity appears to be a not so large a fraction, but I cannot
use this ratio for new boards as the DC consumption is lower for new boards.
So conservatively I just add 15W activity per board. The crate itself +
DCC is ~ 35W+20W=55W, but is 35W everything for a crate itself ?
(transformers, monitors, fans etc. ? or is there hidden power not shown
in the monitor ? The electrician's test for the Lab. last time seemed to
indicate there is a black hole which doesn't show.) Here are the
estimates:
 New TSFX crate:
 ---------------
 TSF+TSFi DC at rest   16*20W
          activity     16*15W
         crate+DCC        55W
                       ------
                         615W
 *1.5 safety margin  =>  920W

 New TSFY crate:
 ---------------
 TSF+TSFi DC at rest    8*20W
          activity      8*15W
         crate+DCC        55W
                       ------
                         335W
 *1.5 safety margin  =>  500W

 New BLT+ZPD crate:
 ------------------
 BLT+BLTi               1*35W
 ZPD+ZPDi at rest       8*25W
          activity      8*15W
         crate+DCC        55W
                       ------
                         410W
 *1.5 safety margin  =>  615W

So this is a total of ~2KW. However, I am no sure I fully accounted the
"dark energy" not showing in the crate monitor meters.

Su Dong



The eventual solution is to put all 3 crates on one breaker for 
30A on 208V which is ~6KW.