Q: How do I connect the M-Audio Capture & Playback Adapter to the
outside world (i.e. microphone/speaker requirements, telephone
line, etc.)?
---------- ---------- ---------- --------- ---------- ----------
A: M-AUDIO CAPTURE & PLAYBACK ADAPTER CONNECTION INSTRUCTIONS:
Input Analog Performance --------------------------------
Input Sampling Rate 44.1 KHz (stereo)
88.2 KHz (mono)
Input Channel Bandwidth 12 Hz to 20 KHz,
3 dB cutoff (typical)
Dynamic Range 16-bit resolution
Signal-to-noise ratio 80 dB (typical)
Line level input impedance 30K ohms (typical)
Line level voltage 7 volts peak-peak maximum
Microphone input impedance 20 K Ohms (typical)
Microphone gain +33/+45 dB
S/(N+D) 78 db (typical)
Output Analog Performance -------------------------------
Output Sampling Rate 88.2 KHz Both Channels
Output Channel Bandwidth 12 Hz to 24 KHz,
3 dB cutoff (typical)
Dynamic Range 16-bit resolution
Signal-to-noise ratio 80 dB (typical)
Line level drive capacity 10 K ohms minimum
Line level voltage 7.0 volts peak-peak maximum
Speaker/Headphone drive >= 4 ohms
Speaker power 110 mw typical (8 ohm load)
S/(N+D) 78 db (typical)
Connectors ----------------------------------------------------
Labeled (from top of rear bracket down)
Line input (1) I Mini-stereo phone jack (3.5mm)
Microphone input (1) M Mini-phone jack (3.5mm)
Line output (1) O Mini-stereo phone jack (3.5mm)
Speaker (1) S Mini-stereo phone jack (3.5mm)
Power Consumption ---------------------------------------------
Test Condition 1 KHz, +7 dBV
+5 V 275 mA
+12 V 70 mA
-12 V 60 mA
Note: The 60 milliamps from the -12 volts exceeds the 40 milliamps
per slot available in the Micro Channel computer. This will not cause
a problem in most systems, since most boards use very little -12 volt
power.
Input and Output Devices
========================
You can use any of these devices with the M-Audio Capture and
Playback Adapter. These options must be purchased separately
and they should meet the following specifications.
o Microphone for input:
Required:
3.5 mm mini jack connector
Recommended specifications:
Cardioid pickup pattern
600 ohms maximum impedance Cable length under 6 feet
Open circuit voltage sensitivity level between -60 (more
sensitive) and -80 db (less sensitive)
Note: Microphone sensitivity is based on 0 db = 1 volt
per bar. More sensitive microphones allow table
top use. Less sensitive microphones generally
require hand-held operation. Details on the
sensitivity level can generally be found on the
microphones spec sheet.
Frequency response (frequency curve) depends on desired
quality and application. Guidelines:
Music applications: 20 Hz to 20 KHz 3.5 db
Speech applications: 50 Hz to 12 KHz 5.0 db
o Speakers
4-8 ohms
Shielded cables with 3.5 mm stereo mini jack connectors to
plug into the Audio Adapter and connectors on the other
end to match your speakers
o Headphones
8 ohm minimum
3.5 mm stereo mini jack
o Line input/output cables:
Shielded cables with 3.5 mm stereo mini jack connectors to
plug into the Audio Adapter with connectors on the other
end to match your other audio equipment (typically this
will be male RCA jacks)
Connecting Input and Output Devices
==================================================
Connecting Input Devices
------------------------
Before connecting any input devices to the Audio Adapter, you
should run the basic diagnostics.
You can connect a microphone and/or a line level signal to the
Audio Adapter.
_______
___________________________________\ |
| |
___ | o | LR and LL In
¢ ¢ | |
¢___¢ | o | Microphone In
___ | |
¢ ¢ | o | LL and LR Out
¢___¢ | |
____ | o | Speaker/Headphone
¢ ¢ | | Out
¢ ¢ | |
¢____¢ | |
| |
| |
______________ ___| |
\_________________\ |_____|
Connecting a Microphone
-----------------------
You can plug a microphone into the second connector (Microphone
In) from the top of the Audio Adapter's retaining bracket. The
microphone input uses a mini-phone jack (3.5 mm). The
microphone wire should be as short as possible (typically less
than six feet) to avoid noise pickup.
Connecting Line In to Other Equipment
-------------------------------------
You can plug a line level stereo signal into the first
connector (LR and LL In) at the top of the Audio Adapter's
retaining bracket. The line input connector is a 3.5 mm mini
stereo jack. The line level input will receive normal levels
from other audio equipment outputs -- typically called "line
out".
Connecting Output Devices
-------------------------
Before connecting any output devices to the Audio Adapter, you
should run the basic diagnostics.
You can connect headphones, speakers and audio equipment to
the Audio Adapter.
Connecting a Speaker/Headphone
------------------------------
You can plug a speaker or headphone set into the bottom
connector (Speaker/Headphone Out) of the Audio Adapter's
retaining bracket. The speaker/headphone connector is a mini-
stereo phone jack (3.5 mm). The output is capable of driving
loads greater than or equal to 4 ohms per channel.
Connecting Line Out to Other Equipment
--------------------------------------
You can plug the third connector (LL and LR Out) from the top
of the Audio Adapter's retaining bracket to other equipment's
Line In. The line output connector is a 3.5 mm mini stereo
jack. The line level output will drive normal levels into
inputs of other audio equipment -- typically called "line in".
Connecting the Y Cable
----------------------
The Y cable allows you to connect two headphone sets to the
M-Audio Capture and Playback Adapter. This cable is for use
with the IBM Educational Software API (Application
Programming Interface).
The Y cable 3.5 mm stereo jack plugs into the Speaker/Headphone
Out. It provides the Right Audio on the 1/4-inch monaural
plug that is either red or labeled "R", and the Left Audio on
the 1/4-inch plug that is either yellow or labeled "L".
TELEPHONE LINE
===============
Unfortunately, the M-Audio Playback Adapter (FC 6301) does not
have the ability to attach to a telephone line and does not
support any telephone interface.. Therefore, you cannot connect
this adapter to a telephone line.
Note: It appears that there may have been some confusion between
this adapter and the Windsurfer MCA card. The Windsurfer
MCA card has the capability. Unfortunately,
this card is currently only supported on the PS/2. There
is not a device driver for the Windsurfer MCA card on the
RISC System/6000.
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This item was created from library item Q664230 5WMMT
Additional search words:
ADAPTER AUDIO CAPTURE CONNECT CONNECTOR HARDWARE IX JUN94 OUTSIDE
OZNEW OZNOTPID PLAYBACK RISCSYSTEM RISCSYSU SYS SYSTEM UNIT WORLD
5WMMT
WWQA: ITEM: RTA000044631 ITEM: RTA000044631
Dated: 10/1996 Category: RISCSYSU
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