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FCC Information - Class B

The sound card has been tested, and it complies with the limits for a Class B computing device in accordance with
the specifications in Part 15 of the Federal Communications Commission (FCC) rules.  These limits are designed to
provide reasonable protection against harmful RF interference in a residential installation.  There is, however, no
guarantee that RF interference will not occur in a particular installation.

To determine if your hardware device is causing interference, disconnect the device from your computer.  If the
interference stops, it probably was caused by the device.  If the interference continues, disconnect the hardware
device, then turn the computer off and then on again.  If the interference stopped when the computer was off, check
to see if one of the input/output (I/O) devices of one of the computer's internal accessory boards is causing the
problem.  Disconnect the I/O devices one at a time and see if the interference stops.

If your computer does cause interference, try the following measures to correct it:

Relocate the radio or TV antenna until the interference stops.

Move the computer farther away from the radio or TV, or move it to one side or the other of the radio or TV.

Plug the computer into a different power outlet so that the computer and radio or TV are on different circuits
controlled by different circuit breakers or fuses.

If necessary, ask your computer dealer or an experienced radio-TV technician for more suggestions.  You may find
helpful information in the booklet How to Identify and Resolve Radio-TV Interference Problems (stock number
004-000-00345-4), published by the FCC, which is available from the U.S. Government Printing Office,
Washington, D.C. 20402.

iii

Summary of Contents for AlphaStation

Page 1: ...AlphaStationSoundCard HardwareInformation Part Number EK PBXJA HI A01 Revision Update Information This is a new manual Digital Equipment Corporation Maynard Massachusetts...

Page 2: ...lication is authorized only pursuant to a valid written license from Digital or an authorized sublicensor Digital Equipment Corporation 1995 All rights reserved The postpaid Reader s Comments form at...

Page 3: ...off check to see if one of the input output I O devices of one of the computer s internal accessory boards is causing the problem Disconnect the I O devices one at a time and see if the interference s...

Page 4: ......

Page 5: ...gnments 1 Microsoft Windows NT Workstation 2 DEC OSF 1 AXP and OpenVMS AXP 2 II Setting the Address Jumper 4 III Updating the Console Database 5 IV Installing the Sound Card 7 V Connecting Audio Equip...

Page 6: ...Figures 1 I O Address Jumpers 4 2 Sound Card Connections 8 Table 1 Sound Card Troubleshooting 11 2 ISACFG Command Options 13 vi...

Page 7: ...nput from a microphone or a stereo device such as a CD player The card can output stereo audio to headphones or speakers as well as a cassette recorder or amplifier The sound card is supported on Alph...

Page 8: ...sources Microsoft Windows NT Workstation System Guide located on the Windows NT CD ROM Multimedia Services for DEC OSF 1 AXP Installation Guide and the related release notes OpenVMS AXP Version 6 1 1H...

Page 9: ...pecific differences in the steps are identified ____________________________________________________________ I Planning IRQ DMA and Address Assignments The IRQ level and the DMA channel of the sound c...

Page 10: ...s ISACFG command to display the contents of the configuration database To display the full console database first shut down the operating system Then from the SRM console prompt type isacfg all Use co...

Page 11: ...000000000000000 membase1 8000000000000000 iobase3 8000000000000000 memlen1 8000000000000000 iobase4 8000000000000000 membase2 8000000000000000 iobase5 8000000000000000 memlen2 8000000000000000 rombase...

Page 12: ...ying I O addresses Armed with your list from the planning step of option addresses in use you can set the sound card s address jumper appropriately The default address is 530 Figure 1 shows the four p...

Page 13: ...on utility ISACFG to perform the update ISACFG is run from the SRM console prompt The following examples show two methods that you can use to update the database 1 From the SRM console prompt type add...

Page 14: ...8000000000000000 membase1 8000000000000000 iobase3 8000000000000000 memlen1 8000000000000000 iobase4 8000000000000000 membase2 8000000000000000 iobase5 8000000000000000 memlen2 8000000000000000 rombas...

Page 15: ...d system damage from static electricity discharge touch bare unpainted metal on the system box before you touch anything inside the system ____________________________________________________________...

Page 16: ...uipment whenever you need to connect or disconnect it The sound card can output high volume To avoid hearing loss or damage test the sound volume by holding the headphones away from your ears ________...

Page 17: ...ndows Sound System driver 5 Click on OK If there is no driver on the system you are asked to mount the Windows NT distribution media Once the driver is loaded the Windows Sound System Driver setup men...

Page 18: ...pport for the same audio and video file formats as Video for Windows does OpenVMS AXP OpenVMS AXP Versions 6 1 1H1 and later contain a sound driver that supports the AlphaStation sound card If the SRM...

Page 19: ...d System driver to see that the hardware configuration matches the settings you planned for in section I If the settings are different modify the driver If the settings are the same run the Windows NT...

Page 20: ...e sounds An IRQ or DMA channel conflict Refer to the section on Resolving Hardware Conflicts Resolving Hardware Conflicts Resolving conflicts between the AlphaStation sound card and other devices on t...

Page 21: ...igned to meet the needs of your PCI devices F Refer to your AlphaStation system user information for details Command Format The syntax of the ISACFG command is shown below isacfg slot slot dev device...

Page 22: ...ar device entry irq 0 3 Allows you to assign up to four IRQ interrupt request channels to the device use decimal IRQ levels membase 0 2 Specifies up to three R W ISA memory regions memlen 0 2 Specifie...

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