EBZ & CED Nov 98
  				OP HEATERS		Not yet approved by RIB
				----------

- There are 3 OP heaters - 1 variable and 2 fixed. 


- Send tcb mbhopspt 63 to switch on heater 1 to full power
	mkpwhop goes to ON 
	mkhopspt goes to 63
  
  You can set this for less than 63 and mkpwhop will still say ON


- The 64s bit of HOPSPT controls heater #3 (according to the screen telemetry) 

	Send tcb mbhopspt 127 to switch on heater 3 
		mkhoph3 goes to ON


- The 128s bit controls heater #2
 
	Send tcb mbhopspt 191 to switch on heater 2 
		mkhoph2 goes to ON


- Heater circuits 1, 2, and 3 each have four identical patch heaters in 
  parallel, and should therefore have roughly the same current draw and 
  heat input to the OP.

- There's a master switch that controls all the OP package heaters' power.  
  The commands to switch it on and off are:
        
        MBPWHOPN
        MBPWHOPF