SCOOP E-Z Portable CODEC User Manual AETA Audio Corporation 75, Fleetwood Drive Suite 200 Rockaway, New Jersey 07866 Tel. 973-659-0555 – Fax 973-659-9555 Web : http://www.aeta.com 55 000 026 – Ed. B SCOOP E-Z - User Manual This document is the property of AETA and can not be duplicated without authorisation L.A.F.
Table of contents 1. 2. SCOOPEZ – Easy quick Start ..........................................1 Introduction ........................................................................2 2.1. Functions.............................................................................................. 2 2.2. Applications ......................................................................................... 3 3. Setting up the SCOOP E-Z................................................4 3.1. Power ..................
8.5. Entering SPID Numbers ( USA ) .......................................................30 9. POTS Information............................................................31 9.1. Factory default configuration .............................................................31 9.2. POTS modes.......................................................................................32 9.3. Network parameters ...........................................................................32 9.4. Error protection .......
1. SCOOPEZ – Easy quick Start 1. Plug ISDN or POTS line to the appropriate jack on rear of unit 2. Plug in audio connections ( microphone and headphones ). 3. Power on the Scoop E-Z via switch On/Off on front 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 “green phone” key once.
2. Introduction 2.1. Functions The Scoop E-Z 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 E-Z 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 E-Z 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 E-Z abroad. 2.2. Applications News remotes. Live sport commentaries with local contributors. Remote two-way interviews. Remote contributions into studio discussions. Live music concerts. 55 000 026 – Ed.
3. Setting up the SCOOP E-Z 3.1. Power The unit can be powered by 6 type "C" or LR14 Alkaline cells. Caution: OBSERVE THE CORRECT POLARITY WHEN INSERTING THE BATTERIES. A new set of batteries will last approximately 1 hour 30 in POTS mode. In ISDN mode, the autonomy depends on the algorithm chosen. The green light, near the symbol battery on the front panel, goes off and a red light appears when there is approximately 15 minutes of battery life remaining.
Given the various kinds of ISDN protocols used in different countries or inside PBXs, ISDN compatibility problems may occur. Please be sure to select the right protocol for the country you are in. In case of difficulty please contact your AETA dealer for advice. 3.3. Connection to the POTS Connect the (RJ11) connector of the telephone cable into the socket on the back panel marked "ANALOG", and then connect the other end of the cable into the telephone wall socket.
4. SCOOP E-Z STRUCTURE 4.1.
4.2. Rear view 1 – V24 serial remote control 2 – POTS RJ11 Jack 3 – ISDN RJ45 Jack 4 – External DC Jack Figure 2 – Rear panel 4.3. Scoop E-Z status There are 23 LED’s on the front panel providing the following information : - Info ( 2 yellow LED’s ) : Information ( Future use ). - Alarm (red) : When “on”, indicates a network problem. - Dec (green) : When "on" indicates that a successful connection exists and the Scoop E-Z is decoding the POTS or ISDN signal.
- 1 (red) : When “on”, input 1 overload. 1 - 2 (red) : When “on”, input 2 overload. 1 - Lim/comp ( green/red ) : When green “on”, the limiter or the compressor is on stand by. When red “on”, the limiter or the compressor is functioning.1 - Level meter : 11 LED’s ( scale –20 to + 5 VU ). 1 - OVLD (red) : Mixed audio overload.1 4.4.
5. Audio section 5.1. Encoding and decoding Scoop E-Z 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) ; ? H242 synchronisation; in this case, 1.6 kbit/s from the compressed data are used for this. H242 synchronisation is highly recommended when possible, as it features higher reliability and faster recovery time, while degradation (because of the bit rate used for framing) is minimal. This is recommended practice according to J52. 5.1.3.
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.
5.2. Audio Interfaces 5.2.1. Mixed Inputs Figure 4 – Left panel “inputs” The mixer features two symmetrical microphone/line inputs with powering, and an output with limitor / compressor. microphone Figure 5 – Input interface The following elements are available for each input : Input connector : female XLR; 12 SCOOP E-Z - User Manual This document is the property of AETA and can not be duplicated without authorisation 55 000 026 – Ed.
- Pad switch ( for the microphone input, the input gain is adjustable by 4 steps of 20 dB ) Microphone power selection switches Dyn : dynamic microphone or line level Phantom : phantom power supply ( 48V or 12V switch configuration ) T12 : “Tonadder” ( 12V ) Each channel can be applied a selectable 12 dB/octave high-pass filter (Off / 80 Hz / 120 Hz cut-off frequency) by menu configuration.1 A LED indicates possible input overload ( see Figure 1 - Front panel , Ref. 11 & 12).
Format Connector Microphone powering Maximum input level with pad Input stage sensitivity adjustment Input impedance CMRR symmetrical 3-pin female XLR socket Phantom 48V or 12V, Tonadder 12V +21 dBu +0 to +60 dB by 4 steps of 20dB 10 k? >80dB @ 1kHz Table 1 – Input interface 5.2.2. Outputs The audio signal output is available on the two headphones and on the line level output. Local audio from the inputs can be mixed with the return audio signal on each headphone.
Headphone Interface : Connector Maximum output level Output impedance 6.35mm jack socket +20dBu = 16 ? Mixed A/D input Expand DSP Headphone 1 D/A 18Bits 48KHz Headphone 2 Ligne output µ.c µ.c µ.c : micropressor command Figure 7 – Analogue outputs 5.3. Audio performance A ) Analog performance Measurement condition: - AD/DA Loop 55 000 026 – Ed.
- Sample frequency : 48kHz Maximum Gain ( Input to Output ) Signal to Noise ration Bandwidth Distortion ( THD+N) +87dB 84dBrms 20Hz – 20 000 Hz ± 0.5dB < 74 dB (0.02%) @ 950Hz Table 2 – Audio performance B) In ISDN mode Data rate 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 Sample frequency 16/24/32/48kHz 16/24/32/48kHz 32kHz 24kHz 24kHz 48kHz 16kHz 16kHz 32kHZ Bandwidth 20Hz - 20kHzmax 20Hz – 20kHzmax 20Hz – 15 kHz 20Hz – 10.5kHz 20Hz – 10.
Table 4 – CELP Note : CELP is a proprietary algorithm of France Telecom CNET 5.4. Audio monitoring The 12 LED's labeled “level” on the front side of the Scoop E-Z indicate the peak level of the mixed audio signal. The level display reference (0 dB) is 8 dB below the clipping level. 55 000 026 – Ed.
6. SCOOP E-Z OPERATION: How it works. 6.1. Introduction Incoming audio into the Scoop E-Z is digitized by a state-of-the-art A/D converter and processed through the Scoop E-Z'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 E-Z or another compatible ISDN Audio Codec. Operating with a very fast DSP, the codec runs an algorithm modeling the digital audio signal, in order to reduce the digitized audio data rate.
6.3. Scoop E-Z 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 and can not be duplicated without authorisation 20 SCOOP E-Z - User Manual 55 000 026 – Ed. B November 2001 GENERAL RESET CONFIRM : OK MISC General reset TOOLS Misc LCD CONTRAST MISC LCD contrast SETUP MISC LCD backlight English OK English French Net KEYBOARD LOCK Off On POWER SAVING Off On Menu 1 Menu 4 SETUP ANALOG Net Audio Cod USER ACCESS Full Reduced MISC Power saving ABOUT Micro : V1.00 Micro : V1.00 Cod : V4.00 Dec : V4.00 Xilinx : V1.
This document is the property of AETA and can not be duplicated without authorisation 55 000 026 – Ed.
This document is the property of AETA and can not be duplicated without authorisation 22 SCOOP E-Z - User Manual 55 000 026 – Ed.
This document is the property of AETA and can not be duplicated without authorisation 55 000 026 – Ed. B SCOOP E-Z - User Manual November 2001 23 LINE OUT SELECT Send Receive +2dBu +4dBu +10dBu +16dBu +2dBu OK METER SOURCE Send Receive Off Mic1 Mic2 AUTO 24Kb/s P0 OK AUTO 24Kb/s P0 AUTO 12Kb/s P1 FIX 16.
7. How to Set-Up Profiles on the Scoop E-Z You can access and edit memory locations and Profiles directly from the front panel keypad and menus of the Scoop E-Z. The Scoop E-Z has the ability to allow you to preprogram the 100 Profile locations. 7.1. What is a profile ? A profile is a non-volatile, pre-programmed memory location stored within the Scoop E-Z 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 E-Z will use the current algorithm configuration. The next stage is to enter a name for your profile, and press “OK” to valid. Now, Scoop E-Z 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 E-Z will ask you to enter the numbers. 7.2.2. How to manage local setups From the Main Function Menu, select “DIRECTORY” symbol, and press the key under it.
8. Connecting 2 SCOOP E-Z. 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 E-Z 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 E-Z 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 E-Z 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 E-Z transmission applications and are reloaded by the selected function : “TOOLS”, “Misc”, ”General reset”.
? Maximum DCE Line speed = 24000 bps. (Default Config.) 9.2. POTS modes 9.2.1. Hybrid / Codec Mode The hybrid 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 E-Z 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.
b) When the speed function is set on "Fixed" at ONE of the both Scoop E-Z 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 E-Z 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. Note : If errors still exist in protected mode 2, set the max line speed at the next lower speed.
10. Troubleshooting Power supply failures: If running on batteries, check that batteries have been inserted properly. Check the “Battery” Green LED indicator on the front panel. The green LED indicates that the battery level is higher than 20%. When the battery LED goes “off”, the remaining autonomy of the Scoop E-Z is 15 minutes. A set of 6 new batteries will last approximately 1 hour 30 communication in normal operating conditions. Note : Replace the old batteries before each new broadcast.
To test your POTS line, you may connect a normal phone to the wall connector instead of the Scoop E-Z unit and call a normal phone number. Check for proper POTS line settings: Dialing method, " Pulse/Tone", dial tone "Detect/Undetected". Check proper setting if going through a PBX ( you may need to dial to get an outside line, Ex 9* ). If the Scoop E-Z disconnects while on-line, check for loose connections between the Scoop E-Z and the telephone connection.
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.
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 (1) unallocated (unassigned) number 02 (2) no route to specified transit network 03 (3) no route to destination 06 (6) channel unacceptable 07 (8) call awarded and being delivered in an established channel 10 (16) normal call clearing 11 (17) user busy 12 (18) no user responding 13 (19) no answer from user (user alerted) 15 (21) call rejected 16 (22) number changed 1A (26) non-selected user clearing 1B (27) destination out of order 1C (28) invalid number format 1D (29) facili
41 (65) bearer capability not implemented 42 (66) channel type not implemented 45 (69) requested facility not implemented 46 (70) only restricted digital information bearer capability is available 4F (79) service or option not implemented, unspecified 51 (81) invalid call reference value 52 (82) identified channel does not exist 53 (83) a suspended call exists, but this call identity does not 54 (84) call identity in use 55 (85) no call suspended 56 (86) call having the requested call i
13. How to open a SCOOP E-Z ready for servicing Tools required: Philips Screw Driver (medium-sized) The Scoop E-Z will be now separated into three Sections : 1) The rear metal panel 2) The bonnet 3) The casing lid Steps : - Switch to off Scoop E-Z Remove the external mains power cable if you use it Undo the two screws at the back.
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. POTS Interface The telephone network connection on Scoop E-Z is a RJ 11 connector.
CTR-21 OFF ON 14.3. 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: Description 14.4. Environment Operating temp. Range: Humidity: Storage temp.
