Audio Ltd. Envoy Manual de usuario
RADIO MICROPHONE SYSTEMS
Envoy
User Guide
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Audio Radio Microphone Systems are noted for their
ease of use. If however you need advice or technical
support at any time please contact Audio Ltd.
All products come with free lifetime technical support,
and we are also always pleased to help users of our
equipment, whatever the application.
Audio Ltd,
Audio House
Progress Road
High Wycombe
Bucks, HP12 4JD
U.K.
Tel: +44 (0)1494 511711
Fax: +44 (0)1494 539600
email: [email protected]
World Wide Web: http://www.audioltd.com
Copyright © 2001 Audio Limited
Part no: ENVOY/1
This guide was produced by
Human Computer Interface Limited,
http://www.interface.co.uk
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Contents
Introduction 5
Audio Limited ........................................................................ 5
The Envoy Range .................................................................. 5
Diversity reception ............................................................... 7
Selecting frequencies ......................................................... 8
Switch
iR
Infra-Red Controller 9
Using Switch
iR ......................................................................
9
CX
iR
Diversity Receiver 11
Controls, displays, and connections ............................... 11
Setting up the CX
iR ............................................................
12
Technical specification ..................................................... 17
TX Blue Pocket Transmitter 18
Controls, displays, and connections ............................... 18
Setting up the TX Blue ....................................................... 19
Technical specification ..................................................... 20
HX
iR
Hand-Held Transmitter 21
Controls, displays, and connections ............................... 21
Setting up the HX
iR ............................................................
23
Fitting the microphone capsule ....................................... 27
Holding the HX
iR .................................................................
27
Technical specification ..................................................... 28
MX
iR
Receiver 29
Controls, displays, and connections ............................... 29
Setting up the MX
iR ...........................................................
30
External powering .............................................................. 33
Technical specification ..................................................... 34
Aud
iR
Infra-Red Controller 35
Installing Aud
iR ...................................................................
35
Running Aud
iR ....................................................................
35
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Introduction
Troubleshooting 39
CX
iR
...................................................................................... 39
TX Blue ................................................................................. 39
HX
iR ......................................................................................
39
MX
iR .....................................................................................
40
No audio output .................................................................. 40
Cable wiring diagrams 41
Index 45
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CHAPTER
1
CHAPTER
1
Introduction
This chapter gives a general introduction to radio
microphones, and shows how the Envoy and iR
Series products interrelate.
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Audio Limited
Audio Limited has been designing and manufacturing
broadcast quality radio microphone systems since 1963,
and over this period they have become the choice of
professional sound mixers around the world.
Audio Limited’s systems have acquired an acclaimed
reputation for reliability and transparent sound quality
through our commitment to designing products with
maximum input from the customer.
All products designed by Audio Limited are a result of
listening to our customers.
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The Envoy Range
The Envoy Range of radio microphone system
components eliminates all mechanical switching by
using infra-red remote control. This allows you to
change settings, such as the frequency and audio level,
and check the status of the units, such as the battery
status and settings, even if they are not fully accessible,
such as when mounted in a camera.
Infra-red control is provided in the Envoy range of
receivers, and in the HX
iR
hand-held transmitter.
The illustration opposite shows the products in the
Envoy Range.
Switch
iR
The infra-red controller for the Envoy receivers and
transmitters.
TX Blue
A multi-frequency synthesised UHF pocket transmitter,
for use on location with a range of microphones.
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Introduction
<>
Menu
OK
TX Blue
HX
iR
MX
iR
Envoy Envoy
CX
iR
Receivers
Transmitters
Switch
iR
Camera
Introduction
HX
iR
A multi-frequency infra-red controlled UHF hand-held
transmitter designed for use with a range of high-quality
microphone capsules from the Schoeps Colettte range.
CX
iR
A multi-frequency UHF infra-red controlled diversity
receiver designed to interface with the internal slot in
several widely used camcorders. It can also be mounted
externally, and used as a portable receiver for
documentary and ENG purposes.
MX
iR
A multi-frequency UHF infra-red controlled non-diversity
receiver with internal battery compartment for portable
use in a wide range of applications.
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Introduction
The Envoy products are fully compatible with all
existing RMS 2020 and RMS 2000 Series products.
Aud
iR
The Envoy Range also includes Aud
iR
, an application
designed to run on Palm OS compatible organisers.
Aud
iR
allows you to display the status of any Envoy
Range device on a single convenient Status screen, and
change any of the settings. In addition, it provides a Plot
Signal function, to plot the signal strength, and a Scan
function, to display a frequency scan:
In effect the Scan function acts like a portable spectrum
analyser dedicated to the receiver being addressed.
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Diversity reception
When electromagnetic waves are radiated by a moving
transmitter, the receiver picks up reflected signals from
surrounding structures as well as the directly radiated
signal. These reflected signals combine with the direct
signal, and in the case where the combining signals are
out of phase with each other, a drop-out or loss of signal
results.
To eliminate this cancellation effect Audio Limited
employ the true diversity technique in the CX
iR
receiver.
The CX
iR
receiver incorporates two separate receivers
fed by separate antennae. A comparator circuit
compares the RF levels from the two receivers ensuring
that the receiver will always switch to the strongest
signal. A noiseless switching circuit takes full
advantage of the accurate level detection to allow
switching as often as needed without noise or clicks.
The result is a reliable, drop-out free, broadcast-quality
audio signal indistinguishable from a line microphone.
Introduction
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Introduction
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Selecting frequencies
The Envoy Range provides a choice of 32 pre-
programmed operating frequencies within a 24MHz
block, in the 470MHz to 1000MHz range. This allows you
to select a frequency appropriate to the location.
The Aud
iR
Palm OS application can be used in
conjunction with the CX
iR
and MX
iR
receivers to
accurately locate any unused channels in a particular
location, thereby eliminating any guesswork.
The Switch
iR
infra-red controller allows you to check
and change the frequency on the CX
iR
and MX
iR
receivers, and the HX
iR
transmitter.
CHAPTER
2
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9
SwitchiR Infra-Red
Controller
The Switch
iR
is a compact infra-red controller
designed for use with the Envoy Range. It provides
functions to allow you to read the status of a device,
or change its settings. In addition it includes a
convenient built-in 9V battery tester:
<>
Menu
OK
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Using SwitchiR
Full instructions for using Switch
iR
with each of the
products in the iR Series are given in the appropriate
chapter of this guide.
The following table summarises the Switch
iR
functions,
and describes the additional functions included in
Switch
iR
CHAPTER
2
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SwitchiR Infa-red
Controller
Menu Description
Fr Press OK to read the transmitter or receiver
frequency setting. Press OK again followed by
aor vto select a new frequency, and press OK
to transmit to the unit.
AF Press OK to read the receiver or transmitter
audio level. Press OK again followed by aor v
to select a new audio level and press OK to
transmit it to the unit.
LF Cut Press OK to read the transmitter’s LF cut setting.
Press OK again followed by aor vto switch
the setting between on or off and press OK to
transmit it to the unit.
Batt Press OK to read the transmitter or receiver
battery level. For receivers the receiver battery
level alternates with a transmitter battery status
indicator: H (high), L (low), or F (fail).
Int Batt Displays the battery voltage of the Switch
iR
internal battery. If this falls below 5.00V the
internal battery should be replaced.
9V Batt Allows you to test a 9V 6LR61 type battery by
holding it against the two metal terminals on the
side of the Switch
iR
. A reverse polarity warning
is displayed if the battery is connected the
wrong way round.
Sn Press OK to read the serial number of a receiver
or transmitter and display it on the display. The
serial number consists of a six-digit prefix
followed by a two-digit suffix, and these are
flashed alternately on the display.
User ID Displays the unit’s user ID. You can edit the user
ID using the Aud
iR
application.
iR disable Press OK to disable the infra-red port on a
transmitter or receiver until power is
disconnected and reapplied.
Off Press OK to turn a transmitter off. Not available
for receivers.
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