6-12
Power Requirements
Power Distribution
Table 6-8
Upper Power Supply Current Budgeting Worksheet
CAUTION:
If you upgrade your Model 748 Ruggedized Workstation, adding more: RAM cards, mass
storage devices, GSC, VME, EISA, PCI, or PMC accessory cards, you must recompute the
power budget to ensure the new configuration will be within the available current each power
supply can provide.
NOTE:
The PCI tray provides power for option cards from both a +3.3 Vdc source and a +5 Vdc source. Cards
may use either or both power sources, up to 25W per slot. However, the +3.3 V dc source is limited to
39.8 W combined for slots 1 and 2, and 39.8 W combined for slots 3 and 4. For example, if the card in
slot 1 draws 25 W at +3.3 V dc, only 14.8 W at +3.3 V dc is available to a card in slot 2. The limits of
+ 5 Vdc is 25 W per slot
.
Location
Device
+5V dc
Amps
+12V dc
Amps
-12V dc
Amps
VME Slot 8
VME Slot 7
VME Slot 6
VME Slot 5
VME Slot 4
VME Slot 3 or PMC cards
in Expansion Adapter*
Total Current
Required:
Maximum Available:
34.0A
8.0A
1.5A
* +3.3 current must be entered into.Table 6-5 or Table 6-6
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com