

		Optimum 408 Power Requirements
		------------------------------

AC Input: 115/230 VAC +/-10%  50/60 Hz  400 Watts (1365 BTU)

Operating Temperature: 0 to 40 degrees Centigrade

Relative Humidity: 10 to 95% (non-condensing)

DC Output: 1) +5 VDC @ 40 Amps
	   2) +12 VDC @ 5 Amps (6.5 Amps peak)
	   3) -12 VDC @ 3 Amps
	   4) +24 VDC @ 5 Amps (6.5 Amps peak)
	Total power NOT to exceed 250 Watts

	Operating Temperature: 0 to 40 degrees Centigrade



----------------------------------------------------------------------------

		Optimum 416 Power Requirements
		------------------------------

	5 1/4 inch disk drives
	----------------------

AC Input: 115/230 VAC +/-10%  50/60 Hz  710 Watts (2425 BTU)

Operating Temperature: 0 to 40 degrees Centigrade

DC Output: 1) +5 VDC @ 60 Amps
	   2) +12 VDC @ 12 Amps (16 Amps peak)
	   3) -12 VDC @ 2 Amps
	   4) -5.2 VDC @ 5 Amps
	Total power of voltages 2,3, and 4 NOT to exceed 160 Watts


	8 inch SMD disk drive
	---------------------

AC Input: 115/230 VAC +/-10%  50/60 Hz  840 Watts (2870 BTU)

Operating Temperature: 0 to 40 degrees Centigrade

DC Output: 1) +5 VDC @ 60 Amps
	   2) +5 VDC @ 25 Amps
	   3) +12 VDC @ 5 Amps (6.5 Amps peak)
	   4) -12 VDC @ 5 Amps
	   5) +24 VDC @ 7 Amps (10 Amps peak)
	   6) -5 VDC @ 5 Amps
	Total power output of voltages 2 through 6 Not to exceed 250 Watts
	Outputs 2 and 4 are reserved for the disk drive.


-----------------------------------------------------------------------------

		Optimum 424 Power Requirements
		------------------------------

AC Input: 115/230 VAC +/-10%  50/60 Hz   1025 Watts (3500 BTU)

DC Output: 1) +5 VDC @ 100 Amps
	   2) +12 VDC @ 3.4 Amps
	   3) -12 VDC @ 3.4 Amps
	   4) -5.2 VDC @ 9 Amps

------------------------------------------------------------------------------

		VTS50 1/2 inch Tape
		-------------------

AC Input: 115/230 VAC +/-10%  
		1600 BPI:  300 Watts (1025 BTU)
		6250 BPI:  400 Watts (1365 BTU)


-----------------------------------------------------------------------------
		
		Diskless Node
		-------------

AC Input: 115/230 VAC +/-10%  50/60 Hz  380 Watts max. (1300 BTU)

DC Output: 1) +5 VDC @ 45 Amps
	   2) +12 VDC @ 8 Amps (16 Amps peak)
	   3) -12 VDC @ 2 Amps
	   4) -5.2 VDC @ 10 Amps
	Total power NOT to exceed 250 Watts


	Monochrome Workstation
	----------------------
		16 MHz 68020 CPU, 4 * 2 Meg memory, Ethernet, Monochrome GIP
AC Power: 260 Watts (890 BTU)

		25 MHz 68020 CPU, 4 * 8 Meg memory, Ethernet, Monochrome GIP
AC Power: 290 Watts (990 BTU)

	Color Workstation
	-----------------

		16 MHz 68020 CPU, 4 * 2 Meg memory, Ethernet, Monochrome GIP
AC Power: 300 Watts (1025 BTU)
	
	25 MHz 68020 CPU, 4 * 2 Meg memory, Ethernet, Monochrome GIP
AC Power: 325 Watts (1110 BTU)

-------------------------------------------------------------------------------

		Monochrome Monitor
		------------------

AC Input: 115/230 VAC +/-10%  50/60 Hz  103 Watts (350 BTU)


		Color Monitor
		-------------

AC Input: 115/230 VAC +/-10% 50/60 Hz  350 Watts (1195 BTU)


-------------------------------------------------------------------------------

		Rack Mount Peripheral Box (RMPB)
		--------------------------------

	VTS25
	-----

AC Input: 115/230 VAC +/-10%  50/60 Hz  122 Watts (415 BTU)


	VTS25 & VDS106
	--------------

AC Input: 115/230 VAC +/-10%  50/60 Hz  210 Watts (715 BTU)


	VTS25 & 2 * VDS106
	------------------

AC Input: 115/230 VAC +/-10%  50/60 Hz  270 Watts (920 BTU)


	VDS106
	------

AC Input: 115/230 VAC +/-10%  50/60 Hz  115 Watts (395 BTU)


	2 * VDS106
	----------

AC Input: 115/230 VAC +/-10%  50/60 Hz  180 Watts (610 BTU)


	VDS269 or VDS494
	----------------

AC Input: 115/230 VAC +/-10%  50/60 Hz  180 Watts (610 BTU)


	VTS25 and VDS269 or VDS494
	--------------------------

AC Input: 115/230 VAC +/-10%  50/60 Hz  260 Watts (890 BTU)

-------------------------------------------------------------------------------

Tape power calculations (VTS25): 
	+12 VDC PD = 12 * sqrt(peak * aver.) = 12 * sqrt(5 * 1.6) = 33.94 Watts
	+5 VDC PD = 5 * (1.2 + 1.5) = 13.5 Watts

8 inch SMD disk power calculations (VDS269 & VDS494):
	+24 VDC PD = 24 * sqrt(seeking * aver.) 
		   = 24 * sqrt(5.5 * 2.3) = 85.36 Watts
	+5 VDC PD = 5 * 3.5 = 17.5 Watts

5 1/4 inch WREN II disk (VDS106):
	+12 VDC PD = 12 * 2.4 = 28.80 Watts
	+5 VDC PD = 5 * 0.9 = 4.5 Watts

Switching supplies are assumed to be 70 % efficient minimum.

5 VDC linear supplies are assumed to be 45 % efficient.

12 VDC linear supplies are assumed to be 55 % efficient.

1 Watt = 3.414 BTU

