Inday AV4X-R User manual

Overview And Uses
AV4X-R
Stereo Audio
Composite Video
4X1 Switcher
With IR Remote Control
& RS-232 Serial Port Option
The AV4X-R is a 4-Input to 1-Output, 3 channel
switcher. Two channels for Stereo Analog Au-
dio and the third channel for Video or Coax Digi-
tal Audio.
The circuitry inside the AV4X-R uses only the
best components for ZERO degradation of au-
dio and video signals. The IC’s used for each
signal path are specifically designed for the type
is signal being switched. The result is a very
low noise/distortion and flat frequency response
output for both Audio and Video.
Typical applications include combining 4 differ-
ent A/V sources such as VCR’s, DVD’s and
Camcorders to one common output.
Although the AV4X-R is primarily used for
switching Stereo Audio and Video, the video
channel can be used to switch Coax Digital Au-
dio. This arrangement would allow both types
of audio (Analog and Digital) to be switched at
the same time. Perfect as a 4 input expansion
for any Hi-End Audio System.
Control of your AV4X-R is provided through a
front panel switch which cycles through the in-
puts. It is also used to program the Remote
Control characteristics.
The AV4X-R also comes with a Remote-Control
to directly access any of the 4 inputs. If you
have a Universal Remote such as the Philips
Pronto, please visit www.inday.com for Configu-
ration Files to simplify programming this device
into a system.
For advanced integration, the AV4X-R also has
an RS-232 Serial Control Port. This allows the
unit to connect to any Computer for direct con-
trol and status. See “RS-232 Control” section
for further information.
Figure 2 - Typical Setup
Multimedia Accessories
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Setup
Connect your sources, such as VCR’s, DVD Players,
Camcorders to the inputs of the AV4X-R. Connect
the output to your TV or Recording Device.
Typical Color codes for Audio Video components are
as follows:
VIDEO Yellow
COAX Orange (Digital Audio)
L White or Black (Left channel Audio)
R Red (Right channel Audio)

Audio Specifications:
Color Coded: White, Red
Unbalanced Stereo Audio
Distortion: 0.01%
Noise: -88dB
Nominal Signal should be –10dB
Clipping +12dB.
Video Specifications:
Color Coded: Yellow
Impedance 75 ohms
Noise > 60dB below 1Vp-p
Frequency Response DC-140 Mhz +/-3dB
RS-232 SERIAL INTERFACE:
3.5mm Stereo Jack
Tip: Tx, Ring: Rx, Sleeve: Gnd
POWER:
12VDC-Unregulated(18VDCMax)
@ 150ma Max.
Wall Transformer supplied
DIMENSION:
4"W x 6"L x 2"H
TEMPERATURE
0 TO 50 DEGREES C
HUMIDITY
0 TO 90% (non-condensing)
Disclaimer
This manual has been checked for accuracy. Inday
assumes no liability for damages incurred directly
or indirectly from errors or omissions or from the
use and suitability of this product for a particular
application.
Revision: Preliminary 10/1/2004
Questions
Specifications
Remote Programming
Troubleshooting
The AV4X-R uses the same
remote as our RGB4X-R com-
ponent video switcher. If this
causes a conflict in your sys-
tem, please contact the factory
for other code options.
The Remote Control has 10
buttons. Only 5 of which are
active at one time. The unit
comes programmed to re-
spond to the left side column of
buttons. You can program the
unit to switch using the right
side buttons, if desired. This
facilitates using two AV4X-R’s
in a system and having inde-
pendent control over both.
Perform the following to repro-
gram the AV4X-R:
1-Remove power from the unit
by unplugging the 12VDC Con-
nector
2-Press and hold the front
panel button
3-Apply power to the unit.
4-Release the front panel but-
ton after the display stops
blinking.
Each time you perform this
operation you are alternating
the button group used on the
IR remote.
Inday www.inday.com
503-255-1451 Fax [phone]
1818 NE 140th Portland, OR 97230
Q: Can I switch Coax Digital Audio using the
video channel.
A: Yes. Coax digital Audio is just AES/EBU digi-
tal audio that is designed to run over Coax
cable just like video and therefore can be
switched the same way
Problem: I now have noise or interference in the pic-
ture that was not there before.
Fix#1: The problem may be “cheap” cables. The
RGB4X is extremely wideband. The switching IC’s are
rated at 700MHz. That’s is 166 times the normal band-
width of composite video (NTSC). If you use marginal
cables with poor shielding, external RF interference will
penetrate the cables and may cause this interference.
Consider your cables to be like your water plumbing. If
they leak, you have a problem! You can fix this problem
by using a quality coax cable, such as type RG59.
Fix#2: Ground Loops can also cause noise and hum
bars. Try lifting the ground leads of your equipment by
using a “cheater plug”. This is a 2 prong AC adapter
without the ground prong, available at most hardware
stores.
RS-232 Control
RS-232 serial control is provided through a 3.5mm
stereo jack on the rear panel. A 3.5mm to DB9 cross-
over cable is provided. Any Terminal communications
program such as Windows “HyperTerminal” will work
for control.
Communications parameters are: 9600,N,8,1. See
specifications for wiring information.
Once connected, pressing the Enter key will cause the
AV4X-R to respond with its help message:
“AV4X-R Online! Type "S" for Status,
Numbers 1-4 for control.”
For current status, type the character “S” followed by
the “Enter” key. The current input is returned.
To switch inputs, type numbers 1, 2, 3 or 4 then
“Enter” . The unit will switch inputs and return a status
message.
All other characters will return the help message.
If the AV4X-R is in a powered-off mode via the IR re-
mote control, any Serial port activity will restore power.