I Get Clicks When I Source My Wave Material From My Computer's Hard Drive; I Am Running Windows Server And I Cannot Get Audio To Pass Through Optimod-Pc's Wave Inputs And Outputs; Meters On Optimod-Pc Control Application Freeze Temporarily But Audio Continues To Be Processed Normally; Rfi, Hum, Clicks, Or Buzzes - Orban OPTIMOD-PC 1101 Operating Manual

2-50
INSTALLATION

I get clicks when I source my WAVE material from my computer's hard drive.

I am running Windows Server and I cannot get audio to pass through OPTIMOD-PC's
WAVE inputs and outputs.
Meters on OPTIMOD-PC Control Application freeze temporarily but audio continues
to be processed normally.

RFI, hum, clicks, or buzzes

A) Open the System control panel.
B) Select the Hardware tab.
C) Select Device Manager...
D) Expand the node labeled Ide Ata/Atapi Controllers.
E) Right-click the first device labeled Secondary Ide Channel and choose Proper-
ties.
F) Select the Advanced Settings tab.
G) Change the Transfer Mode dropdown menu from "PIO only" to "DMA if
available."
H) Repeat steps (E) through (G) for any other devices labeled Secondary Ide
Channel.
•
If Windows detects several hard disk read errors in a row, it will automatically set
the hard disk data transfer mode, usually DMA, to PIO. This can cause clicks in
the OPTIMOD-PC audio if the hard drive is sourcing the WAVE material driving
OPTIMOD-PC. See I Get Clicks When I Source My WAVE Material from a CD
above.
Note that Windows' automatically setting the HD data transfer mode to PIO can
be an early warning of impending hard disk failure. It is wise to search the Win-
dows System log for instances of hard drive read or write problems (C
P > A
ANEL DMINISTRATIVE
•
See Enabling the Windows 2003 Server Audio Service on page 2-46.
•
This is by design. The software thread controlling the meters is given lower than
"normal" priority in Windows to prevent the meters from interrupting important
threads that maintain audio continuity through the Windows WAVE mechanism.
•
An unused input has not been muted in the I/O Mixer and is picking up noise.
•
A grounding problem is possible. Review the information on grounding on page
2-19.
•
OPTIMOD-PC has been designed with substantial RFI suppression on its analog
and digital input and output ports. It will usually operate adjacent to high-
powered transmitters without difficulty. In the most unusual circumstances, it
may be necessary to reposition the host computer to reduce RF interference,
T > E V
OOLS VENT IEWER
ORBAN MODEL 1101
).
> S L
YSTEM OG
ONTROL