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SCSI bus length constraints

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NOTE SCSI connections SCSI bus length constraints SCSI bus length constraints This section discusses SCSI bus length constraints for the Ultra Narrow Single-Ended SCSI bus and the Ultra2 Wide Low-Voltage Differential SCSI bus. ultra narrow single-ended SCSI bus length The maximum cable length for an Ultra Narrow Single-Ended SCSI bus is 3 meters. The HP workstation c-class system uses a small portion of this maximum cable length. When calculating the total Ultra Narrow Single-Ended SCSI cable/bus/trace length used externally, remember to account for cables connecting external devices together as well as the bus length internal to those devices. There are two total cable length specifications that apply to the Ultra Narrow Single-Ended SCSI bus on your computer. Note that these specifications are based on the requirement that the SCSI device being connected to the NSE SCSI bus does not exceed the maximum capacitance of 25 picofarads (pF). Please check with the vendor of your SCSI device if you are not sure of your devices maximum capacitance. Here are the total cable length specifications: • For a total of one to four devices being connected to the NSE SCSI bus the total length of cable used should not exceed 3.0 meters. • For a total of five to eight devices being connected to the NSE SCSI bus the total length of cable used should not exceed 1.5 meters. Please remember that the computer is counted as one of the total devices, and the internal length of its cabling is 0.15 meters. This length needs to be considered in your total cable length determination. 88 Chapter 4

Section	Page
owner’s guide	1
owner’s guide	1
owner’s guide	1
hp workstation c-class	1
Printed in USA	1
Manufacturing Part Number: A7814-90000	1
Edition E1001	1
© Copyright 2001	2
© Copyright 2001	2
Hewlett-Packard Company	2
notice	2
notice	2
1. HP warrants HP hardware, accessories and supplies against defects in materials and workmanship...	2
1. HP warrants HP hardware, accessories and supplies against defects in materials and workmanship...	2
2. HP warrants that HP software will not fail to execute its programming instructions, for the pe...	2
3. HP does not warrant that the operation of HP products will be uninterrupted or error free. If ...	3
4. HP products may contain remanufactured parts equivalent to new in performance or may have been...	3
5. The warranty period begins on the date of delivery or on the date of installation if installed...	3
6. Warranty does not apply to defects resulting from (a) improper or inadequate maintenance or ca...	3
7. TO THE EXTENT ALLOWED BY LOCAL LAW, THE ABOVE WARRANTIES ARE EXCLUSIVE AND NO OTHER WARRANTY O...	3
8. HP will be liable for damage to tangible property per incident up to the greater of $300,000 o...	3
9. TO THE EXTENT ALLOWED BY LOCAL LAW, THE REMEDIES IN THIS WARRANTY STATEMENT ARE CUSTOMER’S SOL...	3
preface	17
preface	17
audience	17
audience	17
safety and regulatory statements	17
safety and regulatory statements	17
installation notice	18
installation notice	18
related manuals	18
related manuals	18
• Configuring HP-UX for Peripherals	18
• Configuring HP-UX for Peripherals	18
• HP-UX System Administration Tasks	18
• HP CDE Getting Started Guide	18
• Managing Systems and Workstations	18
• Using HP-UX.	18
• Using Your HP Workstation	18
revision history	19
revision history	19
Edition	19
Edition	19
Edition	19
Revision History	19
E1001	19
E1001	19
First Printing	19
problems, questions, and suggestions	19
problems, questions, and suggestions	19
documentation conventions	20
documentation conventions	20
<TABLE>	20
<TABLE BODY>	20
<TABLE ROW>	20
user-supplied values	20
Italic words or characters in syntax and command descriptions represent values that you must supp...	20
<TABLE ROW>	20
screen display	20
Information that the system displays, commands that you must use literally, and path names appear...	20
<TABLE ROW>	20
Enter	20
Keycaps are presented with a special keycap font as shown in the left column. (In this document, ...	20
electrostatic discharge (ESD) precautions	20
electrostatic discharge (ESD) precautions	20
ESD (electrostatic discharge)	20
Electrostatic discharge (ESD)	20
• Stand on a static-free mat.	20
• Stand on a static-free mat.	20
• Wear a static strap to ensure that any accumulated electrostatic charge is discharged from your...	20
• Create a common ground for the equipment you are working on by connecting the static-free mat, ...	20
• Keep uninstalled printed circuit boards in their protective antistatic bags.	20
• Handle printed circuit boards by their edges, once you have removed them from their protective ...	20
1 system overview	21
1 system overview	21
• Product Description	22
• Product Description	22
• System Unit Front Panel and Removable Devices	22
• System Unit Rear Panel Connectors	22
• Monitors	22
• Operating System Overview	22
• Information You Need to Record	22
• Powering Up Your System.	22
product description	23
product description	23
Product description	23
HP workstation c-class features	23
<TABLE>	23
Table 11 HP Workstation C-Class Features	23
<TABLE HEADING>	23
<TABLE ROW>	23
Computer Feature	23
Description	23
<TABLE BODY>	23
<TABLE ROW>	23
Processor	23
PA RISC architecture	23
<TABLE ROW>	23
Operating System	23
HP-UX operating system	23
<TABLE ROW>	23
User Interface	23
User interface	23
Interface, user	23
HP CDE graphical user interface	23
<TABLE ROW>	23
Compatibility	23
Source and binary code compatible with the c-class product family	23
<TABLE ROW>	23
Monitors	23
List of compatible monitors:	23
• 19 inch, 1280x1024 and 1600x1200 color, 75Hz	23
• 19 inch, 1280x1024 and 1600x1200 color, 75Hz	23
• 21 inch, 1280x1024 (stereo capability) and 1600x1200 color, 75Hz	23
• 18” Flat Screen Display	23
<TABLE ROW>	23
Optional Graphics	23
Supported graphics devices:	23
• HP Visualize-EG and Visualize-fx2 Pro (for B1000)	23
• HP Visualize-EG and Visualize-fx2 Pro (for B1000)	23
• HP Visualize-EG, Visualize-fx2 Pro and Visualize-fx4 Pro (for C3000)	23
• HP Visualize Fe	23
<TABLE ROW>	23
Main Memory	23
The c-class computers use 128 MByte and 256 MByte DIMMs to provide a minimum of 128 MBytes and a ...	23
<TABLE ROW>	23
Internal Storage Devices	23
Ultra2 Wide Low-Voltage Differential (LVD) SCSI hard disk drive(s) and a choice of either a flopp...	23
<TABLE ROW>	24
Standard Network	24
RJ45, Twisted Pair 10 BaseT/100 BaseT	24
<TABLE ROW>	24
Standard I/O	24
Standard computer I/O ports:	24
• Ultra2 W	24
• Ultra2 W	24
Fast Narrow Single-Ended SCSI	24
Fast Narrow Single-Ended SCSI	24
Parallel port (IEEE 1284)	24
Parallel port (IEEE 1284)	24
Universal serial bus (USB)	24
Universal serial bus (USB)	24
Serial interface port (RS-232C)	24
Serial interface port (RS-232C)	24
• Audio ports (Line in, line out, headset, and microphone in)	24
<TABLE ROW>	24
PCI slots	24
PCI slots	24
Peripheral component interconnect (PCI) slots	24
Slot 1: 64 Bit, 5.0V, 33MHz	24
<TABLE ROW>	24
Keyboard	24
Universal Serial Bus (USB) keyboard	24
<TABLE ROW>	24
Mouse	24
Universal Serial Bus (USB) mouse	24
system unit front panel and removable devices	25
system unit front panel and removable devices	25
Controls, front panel	25
Front panel controls	25
Panel controls, front	25
Figure 11 System Unit Front Panel Controls	25
Figure 11 System Unit Front Panel Controls	25
<GRAPHIC>	26
system LCD	26
System LCD	26
Liquid crystal display (LCD)	26
LCD symbols	26
Symbols, LCD	26
Figure 12 LCD Symbols	26
Figure 12 LCD Symbols	26
<GRAPHIC>	26
system power switch	26
shutdown -q	26
Power switch	26
Switch, power	26
removable media devices	27
removable media devices	27
Floppy disk drive	27
CD-ROM drive	27
Media devices, removable	27
Removable media devices	27
• CD drive	27
• CD drive	27
• Floppy disk drive	27
NOTE You cannot have two devices of the same type. For example, you cannot have two CD drives, an...	27
system unit rear panel connectors	28
system unit rear panel connectors	28
EMI compliance	28
802.3 twisted pair LAN connector	28
Connector:LAN (802.3 Twisted Pair)	28
RS-232C serial I/O connector	28
Connector:RS-232C serial I/O	28
Ultra2 Wide Low-Voltage Differential SCSI	28
Fast Narrow Single-Ended SCSI	28
SCSI:Ultra2 Wide Low-Voltage Differential	28
SCSI:Fast Narrow Single-Ended	28
TOC button	28
Button, TOC	28
Power cord connector	28
Connector:Power cord	28
Connector:Ultra2 Wide Low-Voltage Differential SCSI	28
Connector:Fast Narrow Single-Ended SCSI	28
Audio connectors	28
Connector:Audio	28
Connector:USB	28
USB connectors	28
Parallel connector	28
Parallel connector, IEEE 1284	28
IEEE 1284, parallel connector	28
Connector:Parallel (IEEE 1284)	28
• Audio connectors (including headphones and microphone)	28
• Audio connectors (including headphones and microphone)	28
• USB keyboard and mouse connectors	28
• HP parallel IEEE 1284 I/O connector	28
• 802.3 TP (Twisted Pair) LAN connector	28
• RS-232C serial I/O connectors	28
• SCSI connectors including Ultra2 Wide Low-Voltage Differential and Ultra Narrow Single-Ended SCSI	28
• TOC (transfer of control) button	28
• Power cord connector	28
NOTE To maintain FCC/EMI compliance, verify that all cables are fully seated and properly fastened.	28
Rear panel connectors, system unit	29
System unit rear panel connectors	29
I/O card slots, rear panel	29
Rear panel:I/O card slots	29
Rear panel:Serial interface port	29
USB ports	29
Rear panel:USB ports	29
Line input jack	29
Rear panel:Line input jack	29
Rear panel:Line output jack	29
Line output jack	29
Microphone jack	29
Rear panel:Microphone jack	29
Rear panel:Headphones jack	29
Headphones jack	29
Rear panel:Ultra2 Wide LVD SCSI	29
Ultra2 Wide Low-Voltage Differential SCSI	29
Fast Narrow Single-Ended SCSI	29
Rear panel:Fast Narrow Single-Ended SCSI	29
Rear panel:Power input	29
Power input	29
Figure 13	29
NOTE The Ultra Narrow Single-Ended SCSI and Ultra2 Wide Low-Voltage Differential SCSI connectors ...	29
Figure 13 System Unit Rear Panel Connectors	29
Figure 13 System Unit Rear Panel Connectors	29
<GRAPHIC>	30
audio connectors	30
Connector:Audio	30
Audio connectors	30
Figure 14 Audio Connectors	30
Figure 14 Audio Connectors	30
<GRAPHIC>	30
Electrical specifications, audio	30
Specifications, audio electrical	30
<TABLE>	31
Table 12 Audio Electrical Specifications	31
<TABLE BODY>	31
<TABLE ROW>	31
Frequency Response	31
25Hz to 20kHz	31
<TABLE ROW>	31
Max Input Sensitivity/Impedance	31
Line in Microphone	31
Line in Microphone	31
2.8Vp-p/10Kohm 40mVp-p/47Kohm	31
2.8Vp-p/10Kohm 40mVp-p/47Kohm	31
2.8Vp-p/10Kohm 40mVp-p/47Kohm	31
<TABLE ROW>	31
Max Output Level/Impedance	31
Line out Headphone Speaker (internal)	31
Line out Headphone Speaker (internal)	31
2.8Vp-p/920ohm 5.6Vp-p/110ohm n.a.	31
2.8Vp-p/920ohm 5.6Vp-p/110ohm n.a.	31
2.8Vp-p/920ohm 5.6Vp-p/110ohm n.a.	31
USB connectors	31
USB connectors	31
Connector:USB	31
USB connectors	31
keyboard	31
keyboard	31
USB:Keyboard	31
Keyboard, USB	31
hp scroll mouse	32
hp scroll mouse	32
Scroll mouse, HP	32
HP scroll mouse, USB	32
USB:HP scroll mouse	32
hp hub for USB devices	32
hp hub for USB devices	32
HP hub, USB	32
Hub, HP USB devices	32
USB:HP Hub	32
hp parallel i/o connector	32
hp parallel i/o connector	32
Parallel I/O connector	32
Connector:Parallel (IEEE 1284)	32
802.3 network connectors	32
802.3 network connectors	32
Connector:802.3 twisted pair LAN	32
802.3 twisted pair LAN connector	32
RS-232C serial input/output connector	33
RS-232C serial input/output connector	33
Connector:RS-232C serial I/O	33
RS-232C serial I/O connector	33
<TABLE>	33
Table 13 Serial I/O Pins	33
<TABLE HEADING>	33
<TABLE ROW>	33
Pin No.	33
Signal	33
Description	33
<TABLE BODY>	33
<TABLE ROW>	33
1	33
DCD	33
Data Carrier Detect	33
<TABLE ROW>	33
2	33
RXD	33
Receive Data	33
<TABLE ROW>	33
3	33
TXD	33
Transmit Data	33
<TABLE ROW>	33
4	33
DTR	33
Data Terminal Ready	33
<TABLE ROW>	33
5	33
GND	33
Ground	33
<TABLE ROW>	33
6	33
DSR	33
Data Set Ready	33
<TABLE ROW>	33
7	33
RTS	33
Request To Send	33
<TABLE ROW>	33
8	33
CTS	33
Clear To Send	33
<TABLE ROW>	33
9	33
RI	33
Ring Indicator	33
SCSI connectors	34
SCSI connectors	34
Connector:Ultra2 Wide Low-Voltage Differential SCSI	34
Connector:Fast Narrow Single-Ended SCSI	34
Fast Narrow Single-Ended SCSI	34
Ultra2 Wide Low-Voltage Differential SCSI	34
NOTE When attaching external Ultra Narrow Single-Ended SCSI (NSE SCSI) and Ultra2 Wide Low-Voltag...	34
power cord connector	34
power cord connector	34
Connector:Power cord	34
security loop	35
security loop	35
Security loop	35
Loop, security	35
Figure 15 Security Loop Components	35
Figure 15 Security Loop Components	35
<GRAPHIC>	36
locking your system unit’s left-side panel	36
1. Make sure the system unit’s left side panel is closed. See	36
1. Make sure the system unit’s left side panel is closed. See	36
Figure 16 Closed Left-Side Panel	36
Figure 16 Closed Left-Side Panel	36
<GRAPHIC>	36
3. Lock the padlock. Your system unit’s left side panel is now secure.	36
memory	37
memory	37
Memory, main	37
monitors	38
monitors	38
Monitors	38
• 19-inch, 1280µ±²³µ¶·¸¹°½¥1024 color, 75Hz (A4575A)	38
• 19-inch, 1280µ±²³µ¶·¸¹°½¥1024 color, 75Hz (A4575A)	38
• 19-inch, 1600¥1200 color, 75Hz (A4575A)	38
• 21-inch, 1280¥1024 color (stereo capability), 75Hz (A4576A)	38
• 21-inch, 1600¥1200 color, 75Hz (A4576A)	38
operating system overview	39
operating system overview	39
Instant ignition	39
Operating system overview	39
System overview, operating	39
information you need to record	40
information you need to record	40
LAN station ID	40
Internet protocol (IP) address	40
Subnetwork mask	40
Mask, subnetwork	40
• LAN Station ID	40
• LAN Station ID	40
• Internet Protocol (IP) address	40
• Subnetwork mask	40
LAN station ID	40
LAN station ID	40
LAN station ID	40
IP address and subnetwork mask information	40
IP address and subnetwork mask information	40
IP address	40
powering up your system	41
powering up your system	41
• Your computer has been “ignited;” that is, the HP’s Instant Ignition process has installed the ...	41
• Your computer has been “ignited;” that is, the HP’s Instant Ignition process has installed the ...	41
• Your computer has not been “ignited;” that is, the HP’s Instant Ignition process has not instal...	41
getting required information	42
getting required information	42
NOTE If you are not the system administrator for your workstation, and you do not know the requir...	42
• Host name _____________________________________________ The host name is sometimes called the “...	42
• Host name _____________________________________________ The host name is sometimes called the “...	42
• Internet Protocol address ________________________________ You will need this address if you ar...	42
• Time zone ______________________________________________ This is the time zone where the workst...	42
• Optional networking parameters Ask your system administrator if you need to configure these par...	42
<TABLE>	42
<TABLE BODY>	42
<TABLE ROW>	42
Subnetwork mask	42
__________________	42
<TABLE ROW>	42
Network gateway IP address	42
__________________	42
<TABLE ROW>	42
Local domain name	42
__________________	42
<TABLE ROW>	42
DNS server host name	42
__________________	42
<TABLE ROW>	42
DNS server IP address	42
__________________	42
<TABLE ROW>	42
Network Information Service domain name	42
__________________	42
• Optional font server parameters You need to supply these parameters if you want the workstation...	43
• Optional font server parameters You need to supply these parameters if you want the workstation...	43
<TABLE>	43
<TABLE BODY>	43
<TABLE ROW>	43
Font server name	43
__________________	43
<TABLE ROW>	43
Font server IP address	43
__________________	43
turning on the power	44
turning on the power	44
1. Turn on the monitor and any external peripherals (for example, printers) connected to the work...	44
1. Turn on the monitor and any external peripherals (for example, printers) connected to the work...	44
2. Turn on the workstation. The workstation will run a series of self-tests.	44
3. After two or three minutes, a series of messages are displayed as various hardware and softwar...	44
4. A series of windows appears requesting the information you gathered in the previous section, s...	44
NOTE You should enter the host name when requested; otherwise, you will get an error message when...	44
5. You are now asked if you want to set a root password. Specify the root password now. The root ...	44
6. When you have finished answering all of the questions, the workstation completes its start-up ...	44
7. Log into your first CDE session as	45
NOTE You must log into the first session as	45
8. Use the System Administration Manager (SAM) to set-up user accounts.	45
documentation	45
documentation	45
2 using your CD drive	47
2 using your CD drive	47
• Operating the CD Drive	48
• Operating the CD Drive	48
• Mounting and Unmounting a CD	48
• Verifying the CD Drive Operation	48
• Configuring the CD Driver	48
• Audio Control for the CD Drive	48
• CD Media Description	48
NOTE Be sure you have read and understand the information on mounting and unmounting CDs before y...	48
NOTE This chapter requires you to be superuser (	48
CD media description	49
CD media description	49
CD-ROM media	49
Media, CD-ROM	49
CAUTION Handle CDs by the edges only. Always be sure a CD is either in the CD drive or its protec...	49
caring for CDs	49
caring for CDs	49
Care, CD-ROM	49
CD-ROM, care	49
• Use CDs in a clean environment to prevent dust particles from scratching disc surfaces.	49
• Use CDs in a clean environment to prevent dust particles from scratching disc surfaces.	49
• Store CDs in a cool, dry place to prevent moisture and heat damage.	49
• Do not try to clean the surface of a CD with cleaning solvents, as some cleaning solvents may d...	49
operating the CD drive	50
operating the CD drive	50
CD drive, operating	50
CD drive	50
CD drive	50
CD drive	50
controls and features	51
controls and features	51
CD drive, controls and features	51
Figure 21	51
NOTE The exact positioning of CD Drive controls/features may vary depending on the model of the d...	51
Figure 21 CD Drive Controls and Features	51
Figure 21 CD Drive Controls and Features	51