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AS-3901-B and -C Audio Synchronizers Installation and Operation Manual Edition C May 2005...
Manual Information ................vii Purpose ................... vii Audience ..................vii Revision History ................vii Writing Conventions ..............viii Obtaining Leitch Documents ............ix Unpacking the Module ................x Safety Standards and Compliances ............xi Safety Terms and Symbols ............. xi Chapter 1: Introduction Overview ....................1...
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Contents Upgrading the Firmware (Discovery Method) ....... 10 Upgrading the Firmware (Drag-and-Drop Method) ...... 12 Correcting a Failed Upgrading Procedure ..........14 Setting the Module to Fail-Safe Loader Mode ....... 14 Upgrading the Firmware in Fail-Safe Mode ........14 Rebooting the Module ..............16 Chapter 3: Operation Overview ....................
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Contents Miscellaneous ..................37 Propagation Delays .................37 Power Consumption ................37 Start-Up Time .................37 Appendix A: Tree View Navigation Overview ....................39 Navigating the Tree View ..............40 Tree View Parameters ................41 Appendix B: Audio Bit Manipulation Overview ....................43 Channel Status Bits ................44 Validity and User Bits ................46 Miscellaneous Data ................46 Appendix C: Audio Embedding Overview ....................47...
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Contents AS-3901-B and -C Installation and Operation Manual...
NEO™ AS-3901-B and -C Audio Synchronizers. Audience This manual is written for engineers, technicians and operators responsible for the installation, setup, maintenance, and operation of the NEO AS-3901-B and -C Audio Synchronizers. Revision History Table P-1. Revision History Edition Date...
Preface Writing Conventions This manual adheres to the following writing conventions. Table P-2. Writing Conventions Term or Convention Description Bold Indicates dialog box, property sheet, field, button, check box, list box, combo box, menu, submenu, window, list, and selection names Italics Indicates email addresses, names of books and publications, and first instances of new...
Frames Installation and Operation Manual. If your current NEO frame manual is Edition A, B, C, or D, you will need to download an updated version from the Leitch Web site to access this information. Leitch documents can be viewed or downloaded from the Leitch Web site at www.leitch.com (go to Support>Documentation).
• The corners of the product must be protected. If the product is still within the warranty period, Leitch Technology will return it to you by prepaid shipment after servicing. AS-3901-B and -C Installation and Operation Manual...
FR-3901, FR-3903, and FR-3923 Mounting Frames Installation and Operation Manual and can be downloaded from the Leitch Web site at www.leitch.com. Alternatively, contact your Leitch customer service representative for a copy of this safety manual. Safety Terms and Symbols This manual uses the following safety terms and symbols.
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Preface AS-3901-B and -C Installation and Operation Manual...
Chapter 1 Introduction Overview The NEO AS-3901-B and -C Audio Synchronizers are designed for use in NEO FR-3901 and FR-3903 rack-mounted frames. This chapter covers the following topics: • “Product Description” on page 2 • “Front and Back Modules” on page 3 •...
Chapter 1: Introduction Product Description AS-3901-B and -C modules are audio synchronizers, supporting two AES audio inputs, and two AES processed synchronized audio outputs in balanced (AS-3901-B) and unbalanced (AS-3901-C) formats. Table 1-1 describes the two modules. Table 1-1. Product Description AS-3901 Input Output...
Chapter 1: Introduction Front and Back Modules Front Module Figure 1-1 illustrates the position of the LEDs on the front modules of the AS-3901-B and -C modules. Front modules are designated by the suffix “-FM.” For example, the front module of the AS-3901-B is the “AS-3901-B-FM.”...
Chapter 1: Introduction Back Modules In the NEO frame, back modules are placed directly behind the front modules. Back modules are designated by the suffix “-BM.” For example, the back module of the AS-3901-B is the “AS-3901-B-BM.” The AS-3901-B-BM (Figure 1-2) and the AS-3901-C-BM (Figure 1-3)
Chapter 1: Introduction Plug-In Adapter The balanced back module (AS-3901-B-BM) is shipped with a Note detachable plug-in adapter (AIB-25-3901MF) for connecting twisted pair audio cables directly to the back module. Figure 1-5 illustrates the The AIB-25-3901MF is a pinouts and screw terminals for the plug-in adapter module and the universal adapter.
Chapter 1: Introduction Signal Flow Figure 1-6 illustrates the signal flow for the AS-3901-B and -C modules. Figure 1-6. Functional Block Diagram of the AS-3901-B and -C Modules AS-3901-B and -C Installation and Operation Manual...
Edition A, B, C, or D, you will need to download an updated the NEO Safety Instructions and Precautions Manual. This docu- version from the Leitch Web site (www.leitch.com) to access this ment contains important infor- information. mation about the safe...
Chapter 2: Installation and Removal Packing List Each AS-3901-B and AS-3901-C module package includes these items: • One AS-3901-B-FM or AS-3901-C-FM front module • One AS-3901-B-BM or AS-3901-C-BM back module • One AIB-25-3901MF plug-in adapter (AS-3901-B only) • One AS-3901-B and -C Audio Synchronizers Installation and Operation Manual per order Installing AS-3901-B and -C Modules This module requires no specialized installation procedures.
Chapter 2: Installation and Removal Setting Jumpers Two jumpers, labelled J8 and J9, are located near the rear of the AS-3901-B-FM and AS-3901-C-FM front modules. A triangle symbol beside the jumpers indicates Pin 1. Table 2-1 for the position of the jumpers on the module. Table 2-1.
Follow these steps to upgrade the firmware using the Discovery method: 1. Download the most recent appropriate upgrade package from the Leitch Web site or from your CD-ROM, and then unzip the upgrade package. 2. If the affected module has not been discovered, perform the Discovery operation, as described in your CCS software application manual or online help.
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Chapter 2: Installation and Removal If an fl0 folder is included in the .zip file, the files within that folder must now be uploaded as shown below. (In some cases, the readme file may indicate other separate files must be uploaded instead.) Follow these steps to upload the remaining files: 1.
Follow these steps to upgrade the firmware using the drag-and-drop method: 1. Download the appropriate most recent upgrade package from the Leitch Web site or from your CD-ROM, and then unzip the upgrade package. 2. If the affected module has not been discovered by your CCS software application, enter the Build mode, and then drag or copy and paste the module’s device icon from the catalog folder into the...
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Chapter 2: Installation and Removal 8. Click OK. The Add Upgrade Files box appears. 9. Select the file and then click OK. 10. Click Perform Transfer and then click Yes. This may take several minutes. 11. Wait for the message File transfer to device succeeded in the status bar.
Follow these steps to upgrade the firmware in the fail-safe mode: Note 1. Download the most recent appropriate upgrade package from the To successfully upgrade the Leitch Web site or from your CD-ROM, and then unzip the upgrade firmware, you must follow these package. steps in the exact sequence described.
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Chapter 2: Installation and Removal 2. If the affected module has not been discovered by your CCS software application, enter the Build mode, and then drag or copy and paste the module’s device icon from the catalog folder into the Network or Discovery folder.
Chapter 2: Installation and Removal Rebooting the Module Follow these steps to reboot the affected NEO module: Note 1. Click Reboot Device, and then click Yes. Some NEO modules will reboot After the module has rebooted, a message box advises you to wait automatically.
Chapter 3 Operation Overview This chapter describes how to operate the AS-3901-B and -C modules using card-edge controls. The following topics are found in this chapter: • “Operation Notes” on page 18 • “Cross-Functional Parameter Changes” on page 22 • “Navigating the Operator and All Lists”...
Chapter 3: Operation Operation Notes When using the AS-3901-B or AS-3901-C modules, observe the Note following operation notes: If you do not observe these • If you change parameters within 16 seconds after the AS-3901 “Operation Notes,” you may banner first appears on the VFD, your changes will not be saved. accidentally change your Parameter changes that you make after this 16-second delay will be parameter settings.
Chapter 3: Operation PCM and Non-PCM Processing On the AS-3901-B and -C modules, the AESxFormat parameters provide the ability to select either PCM or Non-PCM as input formats. When PCM is selected, the following input sources are available selections for each OutxSrc parameter: •...
Chapter 3: Operation PCM Processing In PCM processing, if the selected source is AES1 Sum or AES2 Sum, the result is the sum of the two parts of the AES channel, divided by two. For example: ³ 2 AES1 Sum = (AES1a + AES1b) Thus, a stereo pair is averaged out, creating a mono signal.
Chapter 3: Operation Non-PCM Processing Compressed non-PCM audio signals cannot be summed and averaged out. Therefore, if you have selected one of these options, the sources that appear in the Out01Src to Out04Src parameters are arbitrarily matched odd/even to left/right. In the non-PCM mode of operation, audio sample rate conversion cannot be performed.
Chapter 3: Operation Cross-Functional Parameter Changes When you select values in certain specific parameters, you force changes to occur in other parameters. The following table describes forced settings and disabled parameters that result when certain audio parameters changes are made. Table 3-1.
Chapter 3: Operation Navigating the Operator and All Lists To navigate, and then view or change a parameter from the Operator and All Lists, follow these steps: 1. Open the front panel of the NEO frame. 2. Press any card-edge control to turn on the VFD screen. The message AS-3901-B or AS-3901-C appears.
Chapter 3: Operation Operator and All List Parameters This complete list of parameter settings is arranged so that the settings Note most likely requiring changes are placed at the top of the list. Items on the bottom of the list are the least likely to require changing. Parameters You can reset the default values with the designation [RO] are “read-only.”...
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Chapter 3: Operation Table 3-2. Operator and All List Parameters (Continued) Parameter Card-Edge ID Function User Range Name • No* Invert1A, Invert: AES1a to Inverts the AES1a channel through to Invert1B, Invert: AES2b AES2b channel • Yes Invert2A, Invert2B • AES1a* Out01Src to Out 01 to Out 04 Selects the source for output channels 01 to...
Chapter 3: Operation Setup Parameters You can modify the Setup parameters to configure the card-edge Note controls for your personal needs. The Setup section appears at the end of all three navigation lists and consists of these items: Setup parameters on a local or remote control panel may be •...
Chapter 3: Operation Alarms AS-3901-B and -C modules provide a default list of one alarm. You can disable any alarm by modifying the Alarms parameter in the Setup section. When you select Alarms, all of the active alarms are visible in the display, below Config (Configurations).
Chapter 3: Operation Enabling or Disabling an Alarm Parameter To enable or disable an alarm parameter, follow these steps: 1. Select Alarms, then select Config, and then press Enter. 2. Select one of the alarm parameters, and then press Enter. 3.
Chapter 3: Operation LEDs and Indicators General Information The AS-3901-B or AS-3901-C Audio Synchronizers have twelve card-edge LEDs and four standard module indicators. The modules generate visible alarm signals to alert users of failures or impending failures. These alarm signals can be found in the following locations: •...
Chapter 3: Operation Card-Edge LED Locations Alarm signals are generated both by the AS-3901-B or AS-3901-C modules and by other modules and components in the NEO frame. For details on these alarms, refer to the relevant frame or module manuals. Figure 3-3 illustrates the locations of the LEDs and standard module indicators of the AS-3901-B or AS-3901-C.
Chapter 3: Operation LED Descriptions Figure 3-3 on page 30 for the location of the card-edge LEDs described in Table 3-4 Table 3-4. Card-Edge LED Color and Meaning LED Indicator Color Meaning SDI Present None (Not available in the AS-3901-B or AS-3901-C) Error None...
Chapter 3: Operation Module Indicator Descriptions Figure 3-3 on page 30 for the location of the module indicators described in Table 3-5 Table 3-5. Module Indicators Color and Meaning Indicator Color Meaning (When Lit) Major Alarm No major alarms in the AS-3901-B and -C modules Minor Alarm Yellow...
Chapter 4 Specifications Overview The tables in this chapter list the following specifications for the AS-3901-B and -C modules: • “Input” on page 34 • “Output” on page 36 • “Miscellaneous” on page 37 Specifications and designs are subject to change without notice. AS-3901-B and -C Installation and Operation Manual...
Chapter 4: Specifications Balanced DARS Input (-B Version Only) Table 4-3. Balanced DARS Input Specifications Item Specification Connector DB-25 female Sensitivity <200 mV Impedance 110Ω ± 20% (0.1 to 6 MHz) Maximum input signal 10 V pk-to-pk Common mode rejection 0 to 7 V (0 to 20 kHz) Unbalanced DARS Input (-C Version Only) Table 4-4.
Appendix A Tree View Navigation Overview The Tree View is one of the three navigation modes available on the AS-3901-B and -C modules. Unlike the other navigation modes, the Tree View is a multi-level list of parameters, arranged in the following main groups: •...
Appendix A: Tree View Navigation Navigating the Tree View To navigate and then view or change a parameter from the Tree View, follow these steps: 1. Open the front panel of the NEO frame. 2. Press any card-edge control to turn on the VFD display. Note The message AS-3901-B or AS-3901-C will appear as the banner If you do not wish to make...
Appendix A: Tree View Navigation Tree View Parameters Unlike the Operator and All List navigation modes, the Tree View is a multi-level structure that includes all of the available card-edge parameters. Parameters with the designation [RO] are “read-only.” An asterisk (*) indicates the default user range or value. page 40 for instructions on navigating the Tree View.
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Appendix A: Tree View Navigation Processing AudioProc DitherMode (Options: None*, On) Out01_DR to Out04_DR (Options: 24 bits, 20 bits*, 16 bits) Other FadeRate (Range: 0.000 to 10.000 s; 0.010 s*) Synchronization Delay Delay_1A, Delay_1B, Delay_2A, and Delay_2B (Range: 0.00* to 1320.00 msec) Setup Alarms Config...
Appendix B Audio Bit Manipulation Overview The following tables contains information on manipulating audio bits. The receiver is a B3 implementation; the transmitter is a standard implementation. RX Key: N = not recognized, Y = recognized, S = recognized and stored or passed through or both TX Key: N = not transmitted, Y = transmitted AS-3901-B and -C Installation and Operation Manual...
Appendix B: Audio Bit Manipulation Channel Status Bits Table B-1. C-Bit Manipulation Byte Function Remarks [0] Consumer Use Set to 1 [1] Professional Use [0] Audio Passed unmodified [1] Non-Audio 2 to 4 [000] Not Indicated Passed unmodified [100] No Emphasis [110] 50/15 us [111] CCITT J.17 •...
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Appendix B: Audio Bit Manipulation Table B-1. C-Bit Manipulation(Continued) 3 to 5 [000] Not Indicated Set to [100] if 16 bits [001] Max Length - 1 otherwise set to [101] [010] Max Length - 2 [011] Max Length - 3 [100] Max Length - 4 [101] Max Length [110] To [111] Undefined...
Appendix B: Audio Bit Manipulation Validity and User Bits Table B-2. V- and U-Bit Manipulation Bit Manipulation Remarks Validity (V) Bit No automatic adjustment User (U) Bit Passed unmodified Miscellaneous Data Table B-3. Miscellaneous Data Item RX Specification TX Specification Audio Sampling Frequency 32 to 108 (kHz)
Appendix C Audio Embedding Overview The audio embedder component in the AS-3901-B and -C modules are composed of several smaller subcomponent blocks: • One ancillary data stripper (ADS) • Four audio embedding subcomponents The first subcomponent is an ancillary data stripper (ADS). This block allows the user to remove all audio groups presently in the input SDI stream, prior to embedding.
Appendix C: Audio Embedding Embedding Errors During the embedding operation, errors may arise for the following reasons: • An attempt is made to append a group when it is already present. • An attempt is made to overwrite a group when it is not present. •...
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Index returning equipment revision history LED descriptions – LEDs and indicators safety standards and compliances setting up the module main features Setup parameters manuals, purchasing shipping equipment module indicator descriptions signal flow module installation – Software Upgrade tab – software upgrading state recovery of alarms synchronizing alarms navigating parameter lists...
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(each, a "Customer") of hardware or software products manufactured by Leitch (each, a "Product"), or of non-warranty repair or other services provided by Leitch ("Services"), that each such Product and all such Services will be free from defects in materials and workmanship that adversely affect the Product's performance or the Services' intended purpose for a period (the "Warranty Period")
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