Broadcast 6000 Manuale utente
Revision A07, 14 November 2005
Symetrix part number: 5360000A05
Subject to change without notice.
Copyright 2002-2005, Symetrix, Inc. All rights reserved.
AirTools™ is a registered trademark of Symetrix, Inc.
All other trademarks referenced in this User’s Guide are the property of their
respective holders.
Mention of third-party products is for informational purposes only and consti-
tutes neither an endorsement nor a recommendation. Symetrix assumes no
responsibility with regard to the performance or use of these products.
Under copyright laws, the content of this User’s Guide remains the property
of Symetrix, Inc.
6408 216th St. SW, Mountlake Terrace, WA, USA • Tel (425) 778-7728 • Fax (425) 778-7727 • Web www.airtoolsaudio.com
M
6000 Broadcast Audio Delay
User’s Guide
6000 Broadcast Audio Delay
User’s Guide
PAGE i
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install only in
accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators,
heat registers, stoves, or other apparatus (including
amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug
has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety. If
the provided plug does not fit into your outlet, consult an
electrician for replacement of the obsolete outlet.
10.Protect the power cord from being walked on or pinched
particularly at plugs, convenience receptacles, and the
point where they exit from the apparatus.
11. Only use attachments/accessories specified by the
manufacturer.
12.Use only with the cart, stand, tripod, bracket,
or table specified by the manufacturer, or
sold with the apparatus. When a cart is used,
use caution when moving the cart/apparatus
combination to avoid injury from tip-over.
13.Unplug this apparatus during lightning storms or when
unused for long periods of time.
14.Refer all servicing to qualified service personnel. Servic-
ing is required when the apparatus has been damaged
in any way, such as power-supply cord or plug cord is
damaged, liquid has been spilled or objects have fallen
into the apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally, or has been
dropped.
AVIS:
NE PAS OUVRIR
Il ne se trouve a l’interieur aucune piece pourvant entre reparée l’usager.
SEE OWNERS MANUAL. VOIR CAHIER D’INSTRUCTIONS.
S’adresser a un reparateur compétent.
RISQUE DE CHOC ELECTRIQUE
No user serviceable parts inside. Refer servicing to qualified service personnel.
CAUTION
WARNING:
TO REDUCE THE RISK OF FIRE OR
ELECTRIC SHOCK DO NOT EXPOSE
THIS EQUIPMENT TO RAIN OR MOISTURE
DO NOT OPEN
RISK OF ELECTRIC SHOCK
The lightning flash with arrowhead symbol within an equilat-
eral triangle is intended to alert the user of the presence of
uninsulated “dangerous voltage” within the product’s enclo-
sure that may be of sufficient magnitude to constitute a risk
of electric shock to persons. The exclamation point within
an equilateral triangle is intended to alert the user of the
presence of important operating and maintenance (servic-
ing) instructions in the literature accompanying the product
(i.e. this User’s Guide).
CAUTION To prevent electric shock, do not use the
polarized plug supplied with the unit with any extension
cord, receptacle, or other outlet unless the prongs can be
fully inserted.
Power Source. AirTools 6000 hardware uses a switch-
ing power supply that automatically adjusts to the applied
voltage. Ensure that your AC mains voltage is somewhere
between 100-240 VAC, 50-60 Hz. Use only the power cord
and connector specified for the product and your operat-
ing locale. A protective ground connection, by way of the
grounding conductor in the power cord, is essential for safe
operation. The power connector shall remain readily acces-
sible and operable once the unit is installed.
User Serviceable Parts. There are no user
serviceable parts inside the AirTools 6000. In case of
failure, customers inside the U.S. should refer all servicing
to the Symetrix factory. Customers outside the U.S. should
refer all servicing to an authorized AirTools distributor.
Distributor contact information is available online at www.
airtoolsaudio.com.
iImportant Safety Instructions
6000 Broadcast Audio Delay
User’s Guide
PAGE ii
Contents
1 Introduction ______________________________________________________ 1
2 Summary Product Description ______________________________________________________ 2
Front panel view ................................................................................................ 2
Rear panel view ................................................................................................ 3
3 Installation ................................................................................................ 4
AC line connection ................................................................................................ 4
Mounting in an equipment rack ................................................................................................ 4
Analog audio input connections ................................................................................................ 4
Analog audio output connections ................................................................................................ 5
Signal level ................................................................................................ 5
Typical system block diagram ................................................................................................ 5
Remote control & indicators connector ................................................................................................ 6
Automation connector ................................................................................................ 6
Menu tree ................................................................................................ 6
4 Operation ______________________________________________________ 8
Operational status ................................................................................................ 8
INPUT/OUTPUT LEVEL (dB) display ................................................................................................ 8
The START button ................................................................................................ 8
The EXIT button ................................................................................................ 8
The COUGH button ................................................................................................ 9
The DUMP button ................................................................................................ 9
The A1 through A4 relay status LEDs ................................................................................................ 9
The DELAY time (seconds) display ................................................................................................ 9
5 Troubleshooting ______________________________________________________ 10
Solutions to common problems ................................................................................................ 10
Less common problems ................................................................................................ 10
6 Warranty and Service ______________________________________________________ 11
The AirTools™ Limited Warranty ................................................................................................ 11
Limitation of Liability ................................................................................................ 11
Servicing the 6000 ................................................................................................ 12
Return authorization ................................................................................................ 12
In-warranty repairs ................................................................................................ 12
Out-of-warranty repairs ................................................................................................ 12
Appendices
A Specifications ______________________________________________________ 13
Architects and engineers specifications ................................................................................................ 13
Technical specifications ................................................................................................ 13
B Remote Indicator & Control Interface wiring ______________________________________________________ 14
Remote panel switch pinouts ................................................................................................ 14
Remote panel LED indicator pinouts ................................................................................................ 14
Typical remote panel switch wiring ................................................................................................ 15
Typical remote panel LED wiring ................................................................................................ 15
C Automation wiring ______________________________________________________ 16
Automation connector pinout ................................................................................................ 16
D Block Diagram ______________________________________________________ 17
6000 Broadcast Audio Delay
User’s Guide
PAGE 1
Thank you for your purchase of the AirTools™ model 6000 Broadcast Audio Delay, engineered by Symetrix. The
6000 has been designed to give broadcasters unequaled performance combined with ease of use and reliability.
This manual will guide you through the installation and operation of the 6000, and provide valuable tips on how to
interface with other equipment in your studio or control room.
The 6000 gives the host or producer of a talk show the power to prevent the broadcast of unwanted profanities
or comments from guests, hosts or telephone callers. As the program begins, the 6000 gradually and unobtru-
sively delays or "stretches out" the program until up to 40 seconds of 20 kHz bandwidth stereo audio is stored in
memory. When a person says something the host or producer does not think appropriate for the broadcast, he or
she presses the DUMP button and a user preset length of memory is cleared, thereby preventing the unwanted
audio from reaching the airwaves. Meanwhile, the host releases the offending caller from the telephone line and
proceeds with the program. After the DUMP button has been pressed, the 6000 automatically begins to stretch
(time expand) the program audio again until the user preset length of delay is attained.
Several minutes in advance of the end of the talk show, the host or producer presses the EXIT DELAY button and
the 6000 begins to time compress the program audio until there is nothing left in the 6000’s memory (zero sec-
onds delay). At this point the program is back in "real time."
A unique feature of the 6000 is the COUGH button, which allows the host to make impromptu interruptions in
the program for up to 40 seconds while keeping the audience unaware of the break. When the COUGH button
is pushed, the 6000 plays from memory while the button is held in. As soon as the button is released, the 6000
automatically begins to refill the memory. The host can cough, have a quick drink of water, or make a comment to
the producer or engineer without any perceptible program interruption.
The 6000 uses the latest in delta-sigma conversion technology coupled with advanced digital signal processing
(DSP) algorithms. This combination produces a product that meets or exceeds the highest broadcast standards in
terms of low noise, low distortion, and superb signal processing.
The 6000's logical, easy to use control panel holds no hidden surprises. The product is easy to learn and simple
to use. In the sections that follow you'll find information on installation, operation, and specific applications of the
6000. We follow this with a troubleshooting guide, warranty and service information, and detailed specifications.
As with all Symetrix engineered products, the 6000 has been designed and built to the highest standards of the
broadcast industry. Our company is committed to excellence in product design, manufacturing, and service.
Please do not hesitate to contact us with your questions or comments.
Terms
Several notational conventions are used in this manual. Some paragraphs may use Note, Caution, or Warning as
a heading. These headings have the following meaning:
Note Identifies information that needs extra emphasis. A Note generally supplies extra information to
help you to better use the 6000.
Caution Identifies information that, if not heeded, may cause damage to the 6000 or other equipment in
your system.
Warning Identifies information that, if ignored, may be hazardous to your health or that of others.
In addition, certain typefaces and capitalization are used to identify certain words. These are:
CAPITALS Controls, switches or other markings on the 6000's chassis.
Boldface Strong emphasis.
1Introduction
6000 Broadcast Audio Delay
User’s Guide
PAGE 2
This chapter provides a basic overview of the 6000 by describing the input and output connections, power con-
nection, operating controls, front panel LED indicators, and the remote indicator and control interface. Use this
information to acquaint yourself with the product. Chapter 4 (Installation) gives details on installing the 6000 in
your system and Chapter 5 (Operation) gets into specific applications and uses of the 6000 in detail.
Front panel view
2Summary Product Description
• The BYPASS button places the 6000 in either BYPASS or OPERATE modes. In BYPASS mode the incoming sig-
nals are directly routed (via relays) to the 6000's outputs, thereby bypassing any internal circuitry. In addition, the
digital I/O is relay bypassed. In BYPASS mode, the front panel and remote controls have no effect on the opera-
tion of the 6000. In OPERATE mode, the incoming signals are processed through the 6000’s analog and digital
circuitry, and all front panel and remote controls are fully functional.
• The PREVIOUS button displays the previous menu of the 6000’s menu setup hierarchy in the LCD display.
• The NEXT button displays the next menu of the 6000’s menu setup hierarchy in the LCD display.
• The HOME button returns the 6000’s LCD DISPLAY to the default operating screen which shows the following
information:
1. The top line of the LCD DISPLAY shows the input or output levels for audio channels 1 and 2. Each is
labeled with a numeral 1 or 2 respectively to the left. A bar graph meter will display to the right of each
numeral. Each bar graph increment represents 1 dB of signal for a peak level metering range of -40 to 0
dBfs.
2. The bottom line of the LCD DISPLAY shows the current operating status of the 6000. For example, 6000
BYPASSED, DELAY REMOVED, ADDING DELAY TIME, REDUCING DELAY TIME, WAITING FOR
RELEASE, MUTED, or MAXIMUM DELAY.
• The ADJUST knob scrolls through the available parameters to each setup menu item.
• The LCD DISPLAY shows the current menu item in the setup menu hierarchy as well as its current setting. It also
shows the ‘home’ screen as described under HOME (see above).
• The A1 through A4 LEDs show the state of the four internal relays used for delay automation. The LEDs will be off
when the relays are unenergized, green when energized and red when cued to be energized. Further description
of this feature is provided in chapter 5.
• The DELAY numerical readout shows the length of delay time built up by the 6000 in tenth of a second incre-
ments.
• The EXIT DELAY button initiates the gradual reduction of delay time. Once this button is pressed, assuming no
other control button is subsequently pressed, the 6000 will proceed to incrementally reduce delay time until a zero
delay is achieved.
• The START DELAY button initiates the gradual increase of delay time. Once this button is pressed, assuming no
other control button is subsequently pressed, the 6000 will proceed to incrementally increase delay time until a
user-determined preset second delay is achieved up to a possible full 40 seconds.
• Pressing the COUGH button pauses the incoming signal while allowing the output signal to play (uninterrupted)
from the 6000’s memory. The 6000 will continue to play from memory for so long as the button is pressed. When
the COUGH button is released, the 6000 resumes recording into memory and "splices out" the silence created
while the button was pressed. The 6000 then begins to rebuild the delay time used while the COUGH button was
pressed. The listener will be aware of a program interruption if and only if the button is held for a time exceeding
the time in memory, in which case the input is muted.
• Pressing the DUMP button erases a user-determined portion of the 6000’s delay memory. The 6000 will then pro-
ceed to splice back together everything except the erased audio. Next, if no other control button is subsequently
pressed, the 6000 will proceed to incrementally increase delay time until the user-determined second delay is
again achieved. See chapter 5 for further explanation of the DUMP function and its delay length settings.
6000 Broadcast Audio Delay
User’s Guide
PAGE 3
Rear panel view
• The AC INPUT connector accepts nominal AC power sources of 100 - 240 volts [see Appendix A (Specifica-
tions) for voltage tolerance ranges]. See chapter 4 (Installation) for details on the detachable (IEC) power
cable.
• The REMOTE CONTROL AND INDICATOR interface provides a way to connect to the AirTools RC-6000 or a user
supplied remote control and/or indicator panel. See Appendix B for details.
• The AUTOMATION interface provides a way to interface with the four internal relays used for delay automation.
See Appendix C for pinout.
• The ANALOG OUTPUT LEFT and RIGHT audio connectors are electronically balanced, line level, low impedance
outputs. Pin 1 is ground. Pin 2 is high. Pin 3 is low.
• The ANALOG INPUT LEFT and RIGHT audio connectors are electronically balanced, line level, bridging inputs.
Pin 1 is ground. Pin 2 is high. Pin 3 is low.
6000 BROADCAST AUDIO DELAY
100-240 VAC
50-60Hz
15 WATTS
MAXIMUM
MANUFACTURED BY SYMETRIX, INC. MTLK TERR, WA USA THIS UNIT CONTAINS NO USER SERVICEABLE PARTS.
Engineered By
www.airtoolsaudio.com
FABRIQUÉ AUX E.-U. PAR SYMETRIX, INC. MTLK TERR, WA
PAS DES ELEMENTS SERVIABLE PAR UTILISATEUR
25
AUTOMATION
REMOTE CONTROL & INDICATORS
1
1
25
LEFTRIGHT
ANALOG OUT
LEFTRIGHT
ANALOG IN
6000 Broadcast Audio Delay
User’s Guide
PAGE 4
AC line connection
A sticker on the rear of the unit indicates the nominal voltage setting for the unit as it left the Symetrix factory. If
this does not correspond to the voltage setting for your locale then do not attempt to apply power to the 6000.
Instead, return the unit to your local Symetrix distributor for modification.
The 6000 is shipped from the Symetrix factory with a detachable AC power cable (IEC standard) included.
Depending on the intended destination, the power plug is either the US type (intended for 117 VAC use), or the
Europlug type. If the power cable's plug is not right for your locale, then please contact your local Symetrix dis-
tributor for the proper cable.
Once you have determined that the 6000’s operating voltage matches that of your locale and you are ready to
begin, follow these steps:
Plug the socket end of the power cable into the recessed AC power receptacle on the back of the 6000.
Plug the other end of the power cable into a three-hole grounded outlet or power strip.
3Installation
1
2
WARNING The 6000 is intended to be electrically grounded. It has been provided with a three-wire grounding
plug - a plug that has a third (grounding) pin. This plug will fit only a grounded AC outlet. This is a safety feature. If
you are unable to insert the plug into the outlet, contact a licensed electrician to replace the outlet with a properly
grounded outlet. Do not defeat the purpose of the grounding plug!
Mounting in an equipment rack
The 6000 occupies one rack space (1U) in a standard equipment rack with a width of 19" (48.3 cm), a depth of
7.8” (19.8 cm), and a height of 1.75” (4.45 cm). Allow at least 4” (10.16 cm) behind the unit for the protrusion of
connectors. We recommend you take care not to mount the 6000 next to devices that emit large electromagnetic
fields, such as audio power amplifiers. To do so may comprise the noise performance of the 6000. The 6000 has
been designed to conform to mechanical guidelines as described in EIA Standard RS-310-C and IEC Recommen-
dation 297.
Analog audio input connections
The 6000’s audio input connections are via standard female XLR jacks located on the rear panel. For optimum
system performance we recommend that the 6000 be connected to balanced signal sources. If this is not practical
in your situation, then you may connect to unbalanced sources. The following diagram illustrates recommended
cable wiring practices.
1
3
2
Male XLR
Male XLR
Pin 1=Ground
Pin 2 = High
Pin 3 = Low
1
2 3
Pin 3 = Low
Pin 2 = High
Pin 1=Ground
2
1 3
TIP
RING
S
LEEVE
Sleeve = Ground
Ring = Low
Tip = High
Male 1/4" Tip-Ring-Sleeve Plug
Female XLR
Pin 1=Ground
Pin 3 = Low
Pin 2 = High
Analog Source 6000 Analog Input
6000 Broadcast Audio Delay
User’s Guide
PAGE 5
Analog audio output connections
The 6000’s audio output connections are via standard female XLR jacks located on the rear panel. For optimum
system performance we recommend that the 6000 be connected to balanced devices. If this is not practical in
your situation, then you may connect to unbalanced devices. The following diagram illustrates recommended
cable wiring practices.
3 1
2
TIP
Pin 3 = Low
Pin 2 = High
Pin 1=Ground
Male XLR
Tip = High
Male 1/4" Tip-Ring-Sleeve Plug
RING
S
LEEVE
Sleeve = Ground
Ring = Low
3 2
1
2
3
Pin 2 = High
Pin 3 = Low
Pin 1=Ground
Female XLR
Pin 1=Ground
Female XLR
1
Pin 3 = Low
Pin 2 = High
6000 Output Destination device input
Typical system block diagram
In most broadcast applications it is recommended that the 6000 be connected between the station's on air con-
sole and the station's audio processing equipment. In other words, the console's main stereo (or mono) output
bus should connect to the 6000’s inputs, and the 6000’s outputs should feed the "down stream" signal processing.
As discussed in Chapter 5 (Operation), the 6000 will automatically remove itself from the signal path when not
in use.
Signal Levels
The 6000 has been designed to operate at standard nominal broadcast signal levels of either 0 VU = +4 dBu or
0 VU = +8 dBu. To provide even more flexibility, the 6000 can also operate at -10 dBu and 0 dBu. The 6000’s
operating level can be adjusted by navigating to the NOMINAL INPUT and/or OUTPUT LEVEL pages in the setup
menus on the LCD display. A full discussion of the setup menus can be found on page 8.
6000 Broadcast Audio Delay
User’s Guide
PAGE 6
Remote control & indicators connector
This DB-25 connector allows you to remotely control the EXIT DELAY, START DELAY, COUGH and DUMP
functions of the 6000. You can also remotely view the status items DELAY INACTIVE, DELAY ACTIVE, HALF
delay accumulated and WHOLE delay accumulated. This connector interfaces directly with the AirTools RC-6000
Remote Control. Alternatively, you can use the pinout provided in Appendix B to wire your own remote and indi-
cators.
Automation connector
This DB-25 connector provides a way to interface with the four internal relays used for delay automation. The
6000 has four internal relays that may be independently used to control station automation events. The relay clo-
sures (outputs) are triggered by input closures that can be either manual (a momentary switch closure) or electri-
cal (TTL logic low). When an input closure takes place the audio entering the delay at that moment is ‘tagged’.
When the tagged audio reaches the output of the delay it’s corresponding relay closes for a time equal to the
length of the input closure.
A typical purpose for automation would be with the use of sync pulses provided by a nationally syndicated broad-
cast that is being relayed by a local station. The sync pulses can be used to automate the start and exit for the
6000’s delay. Another use would allow for a DJ to automate the exit of the delay to coincide with a commercial
break allowing the DJ to go on break without having to wait for the delay exit in real time. See Appendix C for
pinout.
Menu tree
HOME - displays the input/output levels for audio channels 1 and 2 on the top line in a bar graph fashion and dis-
plays the current operating status of the 6000 (BYPASSED, DELAY REMOVED, ADDING DELAY TIME, REDUC-
ING DELAY TIME, WAITING FOR RELEASE, MUTED, or MAXIMUM DELAY) on the bottom line. You can get to
this default display at any time by pressing the HOME button.
The following table illustrates the 6000’s menu tree with the menus and their options listed in the order that they
would appear if you were to advance through the menu tree using the NEXT button.
MENU OPTION
NOMINAL INPUT LEVEL -10 dBu
+0 dBu
+4 dBu
+8 dBu
NOMINAL OUTPUT LEVEL -10 dBu
+0 dBu
+4 dBu
+8 dBu
DELAY TIME 0.0 to 40.0 SECONDS (in 0.1 second increments)
DUMP LENGTH FIFTH
FOURTH
THIRD
HALF
WHOLE
Indice
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