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
6-11
Power Requirements
Power Distribution
Table 6-7 summarizes the current requirements for internal devices.
Table 6-7 Internal Device Current Requirements
Device
+5.1V dc
Amps
+12V dc
Amps
-12V dc
Amps
Internal mass storage devices:
CD-ROM drive 1.6 A 1.8 A
DDS tape drive 1.0 A 0.8 A
Flexible disk drive 0.8 A
1 GB SE hard drive 1.2 A 1.8 A
2 GB FWD hard drive 1.1A 0.9 A
2 GB SE hard drive 1.0 A 0.9 A
4 GB FWD hard drive 1.1 A 1.0 A
4 GB SE hard drive 1.0 A 1.0 A
9 GB FWD hard drive 1.2 A 0.9 A
Hewlett-Packard EISA Cards:
HP 25525A SCSI DIFF 3.1 A 0.05 A
HP 25525B EISA SCSI 3.06 A 5 mA 5 mA
HP 25560A HPIB 3.1 A
HP 25567A LAN 3.4 A 0.04 A
HP J2156A FDDI 2.0 A 0.09 A 0.05 A
HP J2159A X.25 PSI 3.4 A 0.04 A
HP J2165A LAN 2.1 A
HP J2645AA VG Any LAN 0.3 A
HP J2802B ATM