1. Manuals
  2. Brands
  3. GatesAir Manuals
  4. Conference System
  5. Intraplex PTR-255
  6. Installation and operation manual

GatesAir Intraplex PTR-255 Installation And Operation Manual

Program audio codec module
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Installation and Operation Manual
Intraplex®
PTR-255
Program Audio Codec Module
Issue 2.1

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Intraplex PTR-255 and is the answer not in the manual?

Questions and answers

Related Manuals for GatesAir Intraplex PTR-255

Summary of Contents for GatesAir Intraplex PTR-255

  • Page 1 Installation and Operation Manual Intraplex® PTR-255 Program Audio Codec Module Issue 2.1...

  • Page 3: Publication Information

    ©2014 GatesAir, Inc. . Proprietary and Confidential. GatesAir considers this document and its contents to be proprietary and confidential. Except for making a reasonable number of copies for your own internal use, you may not reproduce this publication, or any part thereof, in any form, by any method, for any purpose, or in any language other than English without the written consent of GatesAir.
  • Page 4 *Version numbers usually correspond to software releases. If the manual versions differ in number from the release, the front page shows both the manual version and the release version.

  • Page 5: Table Of Contents

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 TABLE OF CONTENTS 1 Introduction ..........................5 2 Functional Description ......................6 Audio I/O ......................... 6 Analog Audio ........................6 2.2.1 Programmable Gain .................... 7 Digital Audio ........................7 2.3.1...
  • Page 6 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Time Slot Settings: SW4 and SW6 ................22 Miscellaneous Settings: SW7 ..................25 Programmable Gain Settings: SW1, SW2, SW8, SW9 ..........27 4 Status and Diagnostics ......................29 LED Indicators ......................
  • Page 7 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Figure 2-3: Multiplexer Interface Settings - SW11 ..............20 Figure 2-4: SCB Card Address Switches - SW10 ..............21 Figure 2-5: Time Slot Settings – SW4 and SW6 ................ 22 Figure 2-6: Miscellaneous Settings –...
  • Page 8 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Table 2-9: Gain Switch Settings ....................28 Table 3-1: LED Indicators ......................29 Table 4-1: Pin Assignments on the Analog Audio I/O Connector (MA-555 and MA-556) ......................35 Table 4-2: Pin Assignments on the AES/EBU I/O Connector (MA-555 and MA-556) ......................

  • Page 9: Introduction

    Intraplex Products Issue 2.1, February 2006 1 Introduction This manual describes the setup and installation procedures for the Intraplex PTR-255 Program Audio Codec Module. Experienced users may refer directly to the tables in Section 2 for configuration data. Additional information about this system is contained in your Intraplex multiplexer operation manual.

  • Page 10: Functional Description

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 2 Functional Description Figure 1-1 is a functional block diagram of the PTR-255. Left Out data data sync AK4324 sync Right Out SSI1 Rx AES/EBU Decoder data data...

  • Page 11: Programmable Gain

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 The audio input feeds a 24-bit linear analog to digital converter with 128x oversampling. The sample rate is user-selectable and can be either 16 ksps, 24 ksps, 32 ksps or 48 ksps. When using MPEG Layer 2, only 32 ksps or 48 ksps are available.

  • Page 12: Aes/Ebu Consumer Format

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 2.3.1.1 AES/EBU Consumer Format Model: PTR-255 set to consumer mode Receiver classification: Transmitter classification: Standard Key: TX: N = not transmitted; Y = transmitted RX: N = not recognized; Y = recognized; S = recognized and passed through...

  • Page 13: Aes/Ebu Professional Format

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 RX Validity bit and error handling: both outputs of the PTR-255 are muted if any of these occur:  Loss of PLL lock  Parity error  Biphase error ...
  • Page 14 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Table 2-2 AES/EBU Channel Status (C) Data: Professional Format Byte Function Remarks 4-7 user bit 0000 not ind mode 0001 192 bit 0010 AES18 0011 user def. 0100 to 1111...

  • Page 15: Audio Coding Options

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 2.4 Audio Coding Options The PTR-255 provides three audio coding options:  ISO/MPEG I and II, Audio Layer 2   ISO/MPEG I and II, Audio Layer 3 ...
  • Page 16 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 When using the PTR-255 on an ISDN line to talk to another manufacturer’s codec, the choice of MPEG Layer 2 or MPEG Layer 3 may be limited by the algorithm available on the far end codec;...

  • Page 17: Coding

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 audio mode. Also, at higher data rates there will be less deterioration of the audio quality after multiple generations of encoding and decoding. The tradeoff is that using more of the aggregate circuit (T1 or 2 MB) for the audio leaves less room to carry other channels on the same circuit.

  • Page 18: Auxiliary Data Channel

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 2.5 Auxiliary Data Channel The PTR-255 supports one bi-directional auxiliary RS-232 data channel. This channel can be set to run at rates up to 9.6 kbps as part of MPEG or G.722 audio transmission. The bi-directional data channel is available both when the card is using the same audio coding algorithm in both directions and also when the card is set up to run MPEG audio in one direction and G.722 audio...

  • Page 19: Drop And Insert Operation

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 2.10 Drop and Insert Operation A drop and insert multiplexer operates at a central point on a three (or more) point system. In the example shown in Figure 2-2, Site 2 has a drop and insert multiplexer whose DI-A port is connected to the transmission line to Site 1 and whose DI-B port is connected to the transmission line to Site 3.

  • Page 20: Card Configuration

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 3 Card Configuration The PTR-255 contain several configuration switches, located as shown on Figure 3-2. These controls are described in the following pages. The card can be configured directly using these switches or with a PC using the Intraplex IntraGuide™...

  • Page 21: Figure 2-2: Ptr-255, Switch Locations And Component View

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 IMPORTANT!!! All modules must be inserted so that the white eject tab is at the bottom in a 3RU (5 1/4" high) shelf, and at the right in a 1RU (1 3/4"...

  • Page 22: Audio Algorithm Selection

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 On the receive side, the user again must always select the algorithm and data rate. In MPEG operation the card will automatically detect the sample rate and audio mode from the incoming signal and will override any manual setting that contradicts these.

  • Page 23: Sample Rate Selection

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Table 3-2 Audio Mode Settings (TMOD, RMOD) Algorithm Bit 2 Bit 1 Bit 0 MPEG Layer 2 or Layer G.722 Stereo Monaural - left channel only Down Joint Stereo...

  • Page 24: Data Rate Selection

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 3.1.4 Data Rate Selection Select the data rate using the TDR (transmit) and RDR (receive) switches. The behavior of the data rate settings depends on the algorithm and sample rate selected, as illustrated below.

  • Page 25: Card Address Setting: Sw10

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Table 3-5 Multiplexer Interface Settings – SW11 TERM Down = Set card for use in a terminal or ISDN multiplexer or to communicate via the DI- A port in a drop and insert multiplexer...

  • Page 26: Time Slot Settings: Sw4 And Sw6

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Table 3-6 SCB Address Settings – SW10 Card Switch Settings:* Card Switch Settings:* Address SW2, Positions Address SW2, Positions 1 2 3 4 5 6 1 2 3 4 5 6...
  • Page 27 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 The number of time slots required is determined by the Data Rate setting for each direction of transmission; for example, a 64 kbps data rate would use one time slot, 128 kbps would use two time slots and so on.
  • Page 28 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Table 3-7 Starting Time Slot Selection – TTS (Transmit), RTS (Receive) Bit Positions* Time Slot Time Slot 4 3 2 1 0 (T1, VRM or ISDN) (2 MB)

  • Page 29: Miscellaneous Settings: Sw7

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 3.5 Miscellaneous Settings: SW7 SW7 provides switch settings for several card functions, as described in Table 3-8. Figure 3-6 Miscellaneous Settings – SW7...
  • Page 30 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Table 3-8 Miscellaneous Settings – SW7 Switch Description LOOP[1,0] Loopback switches (see section 4.2, Loopbacks, for details). LOOP1 LOOP0 Effect No loopback Down Activate local loopback Down Activate network loopback...

  • Page 31: Programmable Gain Settings: Sw1, Sw2, Sw8, Sw9

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 3.6 Programmable Gain Settings: SW1, SW2, SW8, SW9 Figure 3-7 Gain Switches – SW1, SW2, SW8, SW9 Four 16 position rotary switches set the gain in the analog section of the card: ...
  • Page 32 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Table 3-9 Gain Switch Settings Switch Input Sensitivity (TX Gain), Setting or Maximum Output Level (RX Gain) in dBu +20 (factory default setting)

  • Page 33: Status And Diagnostics

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 4 Status and Diagnostics The PTR-255 contains several LED status indicators and also offers local and remote loopback capability for diagnostic testing. 4.1 LED Indicators LPBK LEFT RIGHT...

  • Page 34: Local Loopback

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 4.2.1 Local Loopback In a local loopback (Figure 4-2), the PTR-255 encodes the incoming audio as specified by the transmit configuration settings, places the resulting data on the multiplexer bus for transmission to the far end of the link and also passes the data stream to the receive side of the card where it is decoded and handed back to the user.

  • Page 35: Configuration Errors

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Location 1 Location 2 Audio Audio Port Port PTR-255 PTR-255 Aggregate Circuit (T1, E1, ISDN, etc.) Network Loopback Figure 4-3 Network Loopback 4.3 Configuration Errors When any of the switch settings on the PTR-255 create a configuration error, the card will not operate and the SRVC LED will blink to notify the use that an error exists.

  • Page 36: Module Adapters And Interface Options

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 5 Module Adapters and Interface Options Each PTR-255 module must be installed with a Module Adapter (MA), which plugs into the multiplexer directly behind the corresponding PTR-255 module.
  • Page 37 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Jumpers on the MA-555 allow selection of the analog audio input impedance, as shown on Figure 5- Audio Input Impedance Jumpers JMP1 = Left Channel JMP2 = Right Channel In Place = 600 Ohms Removed = >10K Ohms...
  • Page 38 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 fused +5V Input (+) Equipment 5-15V Input (-) ground Normally open switch, using customer power supply fused +5V Input (+) Equipment Input (-) ground LS or CMOS logic output...
  • Page 39 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Table 5-1 Pin Assignments on the Analog Audio I/O Connector (MA-555 and MA-556) Analog Pins Description Audio Right Channel output (-) Connector Right Channel output (+) (DB-15S) Left Channel output (-)
  • Page 40 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Not used Not used Ground Table 5-3 Pin Assignments on the Logic Input Connector (MA-556) Logic Pins Description Input Fused +5V Connector Input 1 (+) (DB-15P) Input 2 (+)

  • Page 41: Audio Interface Panel (Aip)

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Table 5-4 Pin Assignments on the Relay Output Connector (MA-556) Relay Pins Description Output Ground Connector Ground (DB-15S) Ground Output 4A Output 3A Output 2A Output 1A Fused +5V...
  • Page 42 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 The AIP-12X is a 19” rack mountable panel, one rack unit high, with connectors for two PTR- 255 modules. It is designed to be mounted on the rear rack rails directly behind the multiplexer, to save space.

  • Page 43: Installation

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 6 Installation Refer to the figures and tables in Section 3 as necessary during this procedure. Power supply and time slot considerations may affect the installation of a channel module into an existing multiplexer shelf.
  • Page 44 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Select the transmit and receive coding algorithms using the TALGR and RALGR switches, as described in Table 3-1. Set the transmit and receive audio transmission modes using the TMOD and RMOD switches as described in Table 3-2.

  • Page 45: Configuration Procedure Using Intraguide

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 !!! IMPORTANT: The module must be inserted so that the white ejector tab is at the bottom in a 3RU shelf and at the right in a 1RU shelf.

  • Page 46: Testing And Troubleshooting

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 7 Testing and Troubleshooting When the PTR-255 has been configured and installed, test it for proper operation before putting it into service. 7.1 Test Procedure Use the following procedure to test the PT-255 module: Connect the output of an external audio test tone generator (Hewlett-Packard HP4935A or equivalent) to the audio input jack for the left channel.

  • Page 47: Troubleshooting

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 7.2 Troubleshooting If there is an apparent malfunction, first check that the transmit and receive configuration is identical and that the configuration is appropriate for the transmission system in use.

  • Page 48: Specifications

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 8 Specifications General Dual Domain, Analog and AES/EBU Input is selectable analog or AES/EBU Output is simultaneous analog and AES/EBU Each module is an encoder and decoder Configuration Audio Formats ISO/MPEG I &...
  • Page 49 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Digital Audio: 32, 44.1 or 48 ksps Accepted Audio Sampling Rates Rate conversion from 44.1 to 32 or 48 ksps Accepts AES external sync input AES/EBU Channel Status Only the audio bits are transmitted.
  • Page 50 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Frequency Response 100 to 6400 Hz, ±1 dB Sample Frequency 16 kHz Less than 30 ms Circuit Delay 64, 56, 48 kbps Data Rates Standards Compliance ITU-T G.722...
  • Page 51 8.85 W (with maximum user draw) FCC part 15 Class A Regulatory Compliance CE compliant (EMC Directive 89/336/EEC) VCCI Class 1 Austel AS3548 Class A Specifications Subject To Change Without Notice. ©2014 GatesAir. All Rights Reserved. Printed in USA. Rev. 02169...

  • Page 53: Appendix Aisicl Configuration And Status Codes For The Ptr-255

    GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Appendix A ISiCL Configuration and Status Codes for the PTR-255 Underlying the IntraGuide™ remote control software for the PTR-255 is an ASCII-based control language called ISiCL, the Intraplex Simple Command Language. The multiplexer operating manual provides details on using ISiCL to control the multiplexer and channel cards.
  • Page 54 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Table A-1 PTR-255 Remote Configuration Settings (P Codes) Digit(s) and Code Switch Description Equivalent SRVC ON = Turns service on (module enabled) OFF = Turns service off (module disabled) B00000000 Set the starting time slot.
  • Page 55 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Table A-1 PTR-255 Remote Configuration Settings (P Codes) Digit(s) and Code Switch Description Equivalent B00000000 Receive data rate. Same as Table 3-4, Data Rate Settings. ---- 0 = Up, 1 = Down B00000000 Set the left channel receive gain control.
  • Page 56 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 Table A-1 PTR-255 Remote Configuration Settings (P Codes) Digit(s) and Code Switch Description Equivalent B00000000 Terminal mode. ------- 0 = Set card to communicate via the DI-B port in a drop and insert...
  • Page 57 GatesAir PTR-255 Program Audio Codec Module Intraplex Products Issue 2.1, February 2006 S Codes S codes appear in response to an ISiCL STATUS? query. There is one active S code for the PTR- 255, as defined in Table A-2. S05 is used to display the software version but S02, S03 and S04 are not used.
  • Page 58 Support Contacts: http://www.gatesair.com/services.aspx Customer Portal: http://support.gatesair.com GatesAir has office locations around the world. For locations and contact information see: http://www.gatesair.com/company/contact-us.aspx...

Table of Contents