SCOOP STUDIO User Manual AETA AUDIO SYSTEMS S.A.S. Parc technologique - Kepler 4 18-22, avenue Edouard Herriot - 92350 Le Plessis Robinson – FRANCE Tél. +33 (0)1 41361200 – Fax +33 (0)1 41361269 Web : http://www.aeta-audio.com 55 000 033 – Ed.
Table of contents 1. 2. SCOOP STUDIO – Easy quick Start ...............................1 Introduction ........................................................................2 2.1. Functions..............................................................................................2 2.2. Applications .........................................................................................3 3. Setting up the SCOOP STUDIO .......................................4 3.1. Power ...............................
9. POTS Information ........................................................... 28 9.1. Factory default configuration............................................................. 28 9.2. POTS modes ...................................................................................... 29 9.3. Network parameters........................................................................... 29 9.4. Error protection.................................................................................. 30 10.
1. SCOOP STUDIO – Easy quick Start 1. Plug ISDN or POTS line to the appropriate socket on rear of unit 2. Plug in audio connections. 3. Power on the Scoop Studio via switch On/Off on rear panel of unit. 4. Select the appropriate network via the network menu 5. - To use direct dial “Number” mode , enter a number - To dial one of 5 last numbers press - To use a profile number, enter a letter “green phone” key once. For 2 last modes, select the profile number via keypad ( left and right key ) 6.
2. Introduction 2.1. Functions The Scoop Studio is designed to enable radio broadcasters to conduct high quality live two-way remote broadcasts, or two way commentaries with return cue, via ISDN or POTS lines.1 2.1.1. Algorithms The Scoop Studio contains a mono audio compressor/de-compressor (Codec) that performs all necessary ISDN and POTS algorithms. In ISDN mode, the user can select one of four operational audio standards: 1. Phone mode (G.711, 3,5kHz) 2. Live speech ( G.722, 7kHz, low delay ) 3.
The Scoop Studio can work in many countries using various ISDN standards. As ISDN protocol may vary from country to country, consult your AETA dealer before carrying your Scoop Studio abroad. 2.2. Applications News remotes. Live sport commentaries with local contributors. Remote two-way interviews. Remote contributions into studio discussions. Live music concerts. 55 000 033 – Ed.
3. Setting up the SCOOP STUDIO 3.1. Power 3.1.1. Optional DC supply The Scoop Studio will also work on any external 8 to 15-volts DC source. A typical source will be a car cigarette adapter. Connect your DC power cord to the socket at the back panel of the unit ( labeled DC In 8-15 V 2A), and plug the other end into your DC power source. Note : See the chapter 14 for the connection. 3.2.
Caution: Every country has its own style of telephone connector. Consult your engineers, your local AETA dealer for further advice. Dialing methods Telephones dial numbers either by pulsing the line, (you will hear a "clicking" sound similar to that heard when dialing from a rotary dial telephone) or by sending audio tones ( DTMF ) The Scoop Studio can dial using either pulse or DTMF tones. Caution: Do not connect the Scoop Studio to a telephone jack that provides power for lighting a telephone's dial.
4. SCOOP STUDIO STRUCTURE 4.1. Front view Figure 1 - Front panel 1 - LCD display 2 - Function keys 3 - Status LED’s 4 – Keypad 5 – Bargraph 6 – Monitoring selection 7 – Headphone socket 8 - Headphone volume adjustment 4.2. Scoop Studio status There are 28 LED’s on the front panel providing the following information : - Info ( 2 yellow LED’s ) : Relay status - Alarm (red) : When “on”, indicates a network problem.
4.3. General synoptic diagram DSP board Optional DC Board Interfaces board Motherboard Microprocessor board Power board LCD Monitoring Board Figure 2 – Scoop Studio synoptic 55 000 033 – Ed.
5. Audio section 5.1. Encoding and decoding Scoop Studio use includes a wide range of coding algorithms. First, one can select among algorithms compliant with ISO and ITU-T1 recommendations : • G711; • ITU-T G722 (mono at 64 kbit/s); • MPEG Audio Layer II at 48, 32, 24 or 16 kHz, with programmable channel mode and bit rate ; MPEG Audio and G722 algorithms comply with ITU-T J52 recommendation for ISDN transmission.
5.1.2. Notes about G722 With G722 coding, two synchronisation modes are available: • “Statistical recovery” byte synchronisation method (alias SRT) ; • H221 synchronisation; in this case, 1.6 kbit/s from the compressed data are used for this. • H221 synchronisation and H242 protocol H221 synchronisation is highly recommend when possible, as it features higher reliability and faster recovery time, while degradation ( because of the bit rate used for framing) is minimal.
5.1.4. Notes about TDAC As an option, the codec can also include the TDAC algorithm. TDAC is for Time Domain Aliasing Cancellation ; this is a transform coding based on an MDCT (Modified Discrete Cosine Transform), encoding a 15 kHz bandwidth mono signal at a 64 kbit/s bit rate.
• You can do the same thing with the 2 optos : Option “Relays(Optos) ”, “On” • When you press one of these keys or enable an opto input : - On the LCD of the local unit, we display “C1” or “C3” “ON” depend on the key pressed. - On the remote unite, we activate relay(s) 1 or/and 2 and the LED “INFO 1” or/and “INFO 2” light(s) on . Note : In PSTN mode you have only access to the first relay. 5.2. Audio Interfaces 5.2.1.
- If the same both leds are light, you have the local audio signal on the left ear and the return on the right ear. Line Out Interface : Format Connector Maximum output level Balanced 3-pin male XLR socket +0dBu to +22dBu by steps of 1dB ( software selection ) ≤ 50 Ω > 60 dB Output impedance Output symmetry Headphone Interface : Connector Maximum output level Load impedance 6.35mm jack socket +20dBu ≥ 16 Ω 5.3.
B) In ISDN mode Data rate 128 kbit/s Sample frequency 48kHz 128 kbit/s 128 kbit/s 128 kbit/s 128 kbit/s 64 kbit/s 64 kbit/s 64 kbit/s 64 kbit/s 64 kbit/s 64 kbit/s 64 kbit/s 32kHz 24kHz 16kHz 32kHz 48kHz 32kHz 24kHz 16kHz 32kHZ 16kHz 16kHz Bandwidth Delay Algorithm 20Hz - 20kHz 137ms MPEG II (- / J52 ) 20Hz – 15kHz 20Hz – 10.4 kHz 20Hz – 7.2 kHz 20Hz – 15 kHz 20Hz – 20kHz 20Hz – 13.4kHz 20Hz – 10.4 kHz 20Hz – 7.2 kHz 20Hz – 15kHz 20Hz - 7kHz 300Hz – 3.
5.4. Audio monitoring The 12 LED's labeled “Tx” on the front side of the Scoop Studio indicate the peak level of the sending audio signal. The level display reference (0 dB) is 8 dB below the clipping level. The 12 LED's labeled “Rx” on the front side of the Scoop Studio indicate the peak level of the receiving audio signal. The level display reference (0 dB) is 8 dB below the clipping level.
6. SCOOP STUDIO OPERATION: How it works. 6.1. Introduction Incoming audio into the Scoop Studio is digitized by a state-of-the-art A/D converter and processed through the Scoop Studio's codec. The data is then sent via the internal ISDN or POTS synchronous modem to the telephone network ( ISDN or POTS ) to a remote Scoop Studio or another compatible ISDN Audio Codec.
6.3. Scoop Studio Menu 1) Main menu TOOLS SETUP To scroll in the sub-menus use the keys under the word If a second sub-menu exists, you can enter by pressing again the key under the word At any time you can return to the main menu by pressing the Esc key. Note : the symbol between “TOOLS” and “SETUP” means : “DIRECTORY” If you press “green phone” key, you access to the 5 last called number. If you enter a letter, you access to the remote directory. If you enter a number, you can make a direct call.
This document is the property of AETA AUDIO SYSTEMS and can not be duplicated without authorisation 55 000 033 – Ed. D SCOOP STUDIO - User manual March 2006 17 MISC Aux Functions Relays(Keys) OK Relays(Optos) Off GENERAL RESET CONFIRM : OK CURRENT CONFIG PMPEG L2 24K 1B TOOLS Status MISC General reset TOOLS Misc SETUP English OK English French KEYBOARD LOCK Off On MISC Keyboard lock Off Net 5A SYSTEM On USER ACCESS Full Reduced Menu 3 SETUP ISDN Audio Cod MAINTENANCE U.
This document is the property of AETA AUDIO SYSTEMS and can not be duplicated without authorisation 18 SCOOP STUDIO - User manual 55 000 033 – Ed.
This document is the property of AETA AUDIO SYSTEMS and can not be duplicated without authorisation 55 000 033 – Ed.
This document is the property of AETA AUDIO SYSTEMS and can not be duplicated without authorisation 20 SCOOP STUDIO - User manual 55 000 033 – Ed.
7. How to Set-Up Profiles on the Scoop Studio You can access and edit memory locations and Profiles directly from the front panel keypad and menus of the Scoop Studio. The Scoop Studio has the ability to allow you to pre-program the 100 Profile locations. 7.1. What is a profile ? A profile is a non-volatile, pre-programmed memory location stored within the Scoop Studio which functions very similar to the auto dial memory locations on an average telephone.
- “Delete” for deleting a profile. - “Edit” for looking each elements of the profile. - “New” for creating a new profile. “Load” With the left and right extended display key, you can scroll the remote profiles. If you enter a letter on the keypad, the profile list scroll to the profile whose the name begin with this letter. With the centre extended display key, you scroll each profile items. For calling with the display profile, you have just to press the “green phone” key.
when you will make a call with this profile, Scoop Studio will use the current algorithm configuration. The next stage is to enter a name for your profile, and press “OK” to valid. Now, Scoop Studio ask the user to enter one or two numbers ( depend of algorithm configuration ). If you don’t enter numbers, when you will make a call with this profile, Scoop Studio will ask you to enter the numbers. 7.2.2.
8. Connecting 2 SCOOP STUDIO. Note: The following is valid for both POTS and ISDN mode. Warning: In ISDN mode with some PBX’s, you must enter your local number and your SPID number prior making a call. 8.1. Initiating a call There are 3 ways to initiate a call : Dialing with a profile Direct Dialing Re-dialing the previous number. 8.1.1. Dialling Using a Profile Number From the Main Function Menu, select “DIRECTORY” symbol, and press the key under it.
Note : In the case that you have 2 numbers, if you don’t enter the second number, we call twice the first number. A message to indicate that the call is in progress is displayed on the screen. Note : - The number length is limited to 23 digits and may be displayed on 2 lines. - Insert a “*” between number and sub-number in ISDN mode. - Insert a “*” for wait in POTS mode 8.1.3.
8.2. Disconnecting a call To end a call press the "red phone" key. "Wait..." is displayed, after awhile, the Scoop Studio is reset and ready for the next call. The main menu appears on the screen. 8.3. Auto Answering As soon as the "Power On Initialization" phase is completed, the Scoop Studio is ready to receive an ISDN call or a POTS call. You have just to adjust the levels in such a way that the audio level green and yellow LED's indicate a normal operating range.
8.5. Entering SPID Numbers ( USA ) In the USA, some ISDN circuits require two SPID numbers and two LDN ( Local directory number ), one SPID for each B channel, in addition to the local dialing number. The Scoop Studio can be manually programmed using the keypad. From the Main Function Menu, go to “SETUP”, “NET”,”PARAM”. Using the down arrow key scroll right to "Address" screen.
9. POTS Information 9.1. Factory default configuration The Scoop's factory-set default configuration is suitable for most Scoop Studio transmission applications and are reloaded by the selected function : “TOOLS”, “Misc”, ”General reset”.
9.2. POTS modes 9.2.1. Phone / Codec Mode The telephone mode or the codec mode is selected by the menu “ANALOG MODE”. If you select Hybrid parameter, you select the phone mode. The change of the initial mode can’t be done during the communication. When the high speed connection is broken the Scoop Studio doesn't fall back to the regular POTS mode (3.4 kHz). The voice communication is interrupted and a new call has to be made. 9.3. Network parameters 9.3.1.
b) When the speed function is set on "Fixed" at ONE of the both Scoop Studio unit, the 2 modems will be allowed to negotiate at only the lowest speed of the two max speeds selected. They will neither "fall forward" nor "fall back". If this select speed is too high for the possibility of one of the local network capacity, the modem will "NOT CONNECT" and a lower has to be selected by the user to obtain a solid connection at a reliable data rate.
9.4.1. Secured modes Three protection modes are available : Protected 0 ( Unprotected ) is set by default ( Factory Configuration ) • Is compatible with all Scoop Studio units. • Keep the smallest transmission delay ( coding : decoding ) of 80 ms. Protected 1 Ought to be selected manually and recovers errors of 100 ms. Protected 2 Ought to be selected manually and recovers errors of 250 ms. Delay : Protection 24K \ Data rate 21.6K 19.2K 16.8K 14.
10. Troubleshooting Network Indication: - Alarm (red) When “on” indicates a network problem. Check your network. - Dec (green) When "on" indicates that the signal is decoded by the Scoop Studio. Unable to establish a connection: Check the RJ connection between the Scoop Studio and the telephone network.
11. Tests 11.1. Audio section testing 1- Analogue section test a ) Connect an audio signal to one of the audio inputs. That signal is available on the headphones (Potentiometer turns that feedback feature off when fully counterclockwise). b ) Select the menu < TOOLS > , < MAINTENANCE > , < Test > : AD/DA Loop. The test is OK if you get the audio signal either on the headphones, or Aux. Out.
11.2. Network test These allows checking the network and the remote codec. 1- The unit can be configured to loop back to the network the received data. Select the main menu < TOOLS > , < MAINTENANCE > , < Test > : Loop 2 Network. The loop is enabled as soon as the unit is connected. 2- The unit can be configured to loop back to the network the sent data. Select the main menu < TOOLS > , < MAINTENANCE > , < Test > : Loop 3 codec. The loop is enabled as soon as the unit is connected.
12. ISDN modem information 12.1. ISDN Protocols ISDN modem supports worldwide ISDN signaling (CCITT I.430, Q.921, Q.
01 unallocated (unassigned) number 02 no route to specified transit network 03 no route to destination 06 channel unacceptable 07 call awarded and being delivered in an established channel 10 normal call clearing 11 user busy 12 no user responding 13 no answer from user (user alerted) 15 call rejected 16 number changed 1A non-selected user clearing 1B destination out of order 1C invalid number format 1D facility rejected 1E response to STATUS ENQUIRY 1F normal, unspecified
bearer capability not implemented 42 channel type not implemented 45 requested facility not implemented 46 only restricted digital information bearer capability is available 4F service or option not implemented, unspecified 51 invalid call reference value 52 identified channel does not exist 53 a suspended call exists, but this call identity does not 54 call identity in use 55 no call suspended 56 call having the requested call identity has been cleared 58 incompatible destination
13. How to open a SCOOP STUDIO ready for servicing Tools required: Philips Screw Driver (medium-sized) The Scoop Studio will be now separated into three Sections : 1) The top metal panel 2) The casing lid Steps : - Switch to off Scoop Studio Remove the external mains power cable if you use it Undo screws at the top Remove the top panel Now, you have access to all internal boards.
14. Connectors layout 14.1. Remote Connector This interface uses a 9-pin female Sub-D connector on the rear panel. This is a V24/RS-232 type interface with only Tx and Rx signals (no flow control). The following table indicates its pin out (DCE type pin out) Pin 2 3 7 8 5 Description TX , To the PC RX, From the PC CTS, From the PC RTS , To the PC Signal ground 14.2. AUX Connector Pin 1 9 2 10 3 11 4 12 5 13 6 14 7 15 8 Name DGND STOR1STOR1+ STOR2STOR2+ STOR3STOR3+ N.C.
Remarks: • • • Direction: I = input, O = output Relay/Opto 1 and relay / Opto 2 are the transparent contacts (relay transmission) Relays and opto inputs are bi-directional, i.e.
Impedance adaptation ( Internal rear panel switches ): Country RZDC ZZNT US 8.2 Ω 600 Ω CTR-21 22.1 Ω 600 Ω//0.0047µF Country \ Switch US CTR-21 1 ON OFF 2 OFF ON 14.4. ISDN Interface Network The ISDN connector is an RJ45 – 4 wires into 8 wires. S0/T0 Network: Pin 1 2 3 4 5 6 7 8 Description N.C. N.C. TX A, To the network RX A, From the network RX B, From the network TX , To the network N.C. N.C. Pin 1 2 3 4 5 6 7 8 N.C. N.C. N.C. RING TIP N.C. N.C. N.C. U0 NETWORK: 55 000 033 – Ed.
14.5. External DC connector Pin 1 : Minus Pin 4 : Plus 14.6. Environment Operating temp. Range: Humidity: Storage temp. : Dimensions: Weight: 42 0°C to 45°C ( 41°F to 113°F ) 0 to 90% non -condensing - 20°C to 60°C ( -4°F to 140°F ) (D x W x H) 270 x 482 x 45 mm 3.43 kg, SCOOP STUDIO - User manual This document is the property of AETA AUDIO SYSTEMS and can not be duplicated without authorisation 55 000 033 – Ed.
