Technical data
Table Of Contents
- Technical Reference Manual for OEMs HP Models 743, 744, and 748
- Contents
- 1 General Information
- Model 743 and Model 744 VME Board Computers
- Product Description
- Supported Configurations
- Model 743 and Model 744 External Devices
- Keyboard and Mouse
- Model 743 and Model 744 Cables
- Model 743 and Model 744 Functional Description
- Model 744 Block Diagram
- CPU Circuit
- Boot ROM Circuit
- Graphics Circuit
- Model 743 Memory Controller Circuit
- Model 744 Memory Controller Circuit
- LED Displays
- I/O Controller ASIC
- VME Controller ASIC
- I/O Expansion
- I/O Expansion Block Diagrams
- Model 748 Ruggedized Workstation
- Model 743 and Model 744 VME Board Computers
- 2 References
- 3 Quality
- 4 Mechanical Information
- 5 Electrical Information
- Video Connector Pinouts
- Audio Connector Pinouts
- HP Parallel Connector Pinouts
- RS-232 Connector Pinouts
- AUI LAN Connector Pinouts
- Single-Ended SCSI Connector Pinouts
- FW SCSI Connector Pinout
- PS/2 Connector Pinouts
- VME Connector Pinouts
- Real-Time Clock (RTC) Battery Information
- Video Output Signal Specifications
- Video Timing Specifications
- 6 Power Requirements
- 7 Product Design Considerations
- Index
6-6
Power Requirements
Power Distribution
FW SCSI Estimated Power Consumption
Table 6-1 summarizes the estimated power consumption of the FW SCSI adapter.
Monitor Power Specifications
The following section describes the ac power specifications for the 17-inch and 20-inch mon-
itors.
Table 6-2 summarizes the ac power specifications.
Table 6-1 FW SCSI Power Dissipation
HW Component
+5 V
Current
(VDD0)
+3 V
Current
(SYS_VDL)
+12 V
Current
-12 V
Current
P-total
SCSI terminators
a
213 mA 0 0 0 1.07 W
Total
b
698 mA 1.2 mA 0 0 3.50 W
a.On-board SCSI terminators; all signals asserted.
b.Actual power demand is greater due to the requirement of supplying SCSI bus TERM
power. This value is limited to 2 A by an on-board fuse. The total power demand could
be as high as 12.43 W.
Table 6-2 Monitor Power Specifications
Voltage Type 60 Hz 50 Hz
Maximum operating (Vac) 132 288
Minimum operating (Vac) 90 198
Nominal rated (Vac) 110 230
Rated line current (Arms) 2.7 1.5
Frequency range (not-strappable) 47 Hz to 63 Hz 47 Hz to 63 Hz