Orban OPTIMOD-FM 5500 Operation Manual
  1. Manuals
  2. Brands
  3. Orban Manuals
  4. Computer Hardware
  5. OPTIMOD-FM 5500
  6. Operation manual

Orban OPTIMOD-FM 5500 Operation Manual

Digital audio processor
Hide thumbs Also See for OPTIMOD-FM 5500:
Table of Contents

Advertisement

Quick Links

See also: Operating Manual
Operating Manual
OPTIMOD-FM
5500
Digital Audio Processor
Version 1.0 Software

Advertisement

Table of Contents
loading

Related Manuals for Orban OPTIMOD-FM 5500

Summary of Contents for Orban OPTIMOD-FM 5500

  • Page 1 Operating Manual OPTIMOD-FM 5500 Digital Audio Processor Version 1.0 Software...
  • Page 2 European Parliament, this product must not be discarded into the municipal waste stream in any of the Member States. This product may be sent back to your Orban dealer at end of life where it will be reused or recycled at no cost to you.

  • Page 3: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS All the safety and operating instructions should be read before the appliance is operated. Retain Instructions: The safety and operation instructions should be retained for future reference. Heed Warnings: All warnings on the appliance and in the operating instructions should be adhered to. Follow Instructions: All operation and user instructions should be followed.
  • Page 4 Safety Instructions (German) Gerät nur an der am Leistungsschild vermerkten Spannung und Stromart betreiben. Sicherungen nur durch solche, gleicher Stromstärke und gleichen Abschaltverhaltens ersetzen. Sicherungen nie überbrücken. Jedwede Beschädigung des Netzkabels vermeiden. Netzkabel nicht knicken oder quetschen. Beim Abziehen des Netzkabels den Stecker und nicht das Kabel enfassen.
  • Page 5 (2) Check the other sections of the Manual (consult the Table of Contents and Index) to see if there might be some sug- gestions regarding your problem. (3) After reading the section on Factory Assistance, you may call Orban Customer Service for advice during normal Ari- zona business hours. The number is (1) (480) 403-8300.
  • Page 6 U.S. patents 4,208,548, 4,460,871, 5,737,434, 6,337,999, 6,434,241, 6,618,486, and 6,937,912 protect OPTIMOD 5500. Other patents pending. All 5500 software and firmware © Orban. Orban and Optimod are registered trademarks. All trademarks are property of their respective companies.
  • Page 7 Operating Manual OPTIMOD-FM 5500 Digital Audio Processor Version 1.0 Software...

  • Page 8: Table Of Contents

    Transmission from Studio to Transmitter.............1-15 Digital Links ........................1-15 Composite Baseband Microwave STLs................1-16 Dual Microwave STLs...................... 1-17 Analog Landline (PTT/Post Office Line)................. 1-18 Using the Orban 8100AST (or 8100A/ST) External AGC with the 5500 .....1-18 STL and Exciter Overshoot ..................1-19 ..............1-19 SING OSSY...
  • Page 9 Circuit Ground .......................2-11 ) ............2-11 TUDIO EVEL ONTROLLER NSTALLATION OPTIONAL If you are using Orban 8200ST external AGC ............2-11 Figure 2-4: 8200ST Jumper Settings (*Factory Configuration) ........2-13 ) ................2-14 UICK ETUP UDIO ROCESSOR Setup for Stand-Alone Stereo Encoder Mode .............2-22 I/O S ..................2-28...
  • Page 10 .............2-53 PPENDIX ETTING ERIAL OMMUNICATIONS Preparing for Communication through Null Modem Cable ......2-53 Connecting Using Windows 2000 Direct Serial Connection:......2-53 Connecting Using Windows XP Direct Serial Connection ........2-58 Preparing for Communication through Modems ..........2-63 Connecting Using Windows 2000 Modem Connection ........2-63 Connecting using Windows XP Modem Connection ..........2-69 5500’...
  • Page 11 Table 3-7: Multiband Controls ..................3-44 Customizing the Settings ..................3-44 The Five-Band Structure’s Full and Advanced Setup Controls......3-44 Table 3-8: MB Attack/Release Controls ................3-45 Table 3-9: MB Band Mix Controls................... 3-46 Advanced Multiband Controls................3-51 ITU-R M ................3-53 ULTIPLEX OWER ONTROLLER Figure 3-1: Multiplex Power over 15 Minute Observation Interval with MPX Power Controller Active, measured at Optimod’s Composite Output ........
  • Page 12 Interference from stereo into SCA .................. 5-4 Figure 5-1: Typical 5500 baseband spectrum with heavy processing, 0-100 kHz..5-4 Shrill, Harsh Sound ......................5-5 Dull Sound ........................5-5 System Will Not Pass Line-Up Tones at 100% Modulation ..........5-6 System Will Not Pass Emergency Alert System (“EAS”...
  • Page 13 Function Description Drawing Page Chassis Circuit Board Locator and Basic In- Top view 6-27 terconnections (not to scale) Control board Control microprocessor. Services Parts Locator 6-28 front panel, serial port, Ethernet, Drawing and DSP+I/O board. Contains: General Purpose bus, address de- Schematic 1 of 5 6-29 coder, I/O+DSP interface...

  • Page 14: Index

    Index Maximum Delta Gain Reduction control 3- · meter 3- · 3 ratio control 3- · 30 19 K Ref control 2- · 9 window release control 3- · 30 window size control 3- · 30 AGC 3- · 7 allpass crossover 3- ·...
  • Page 15 inputs 2- · 6 LCD display 6- · 7 output, simulates transformer 2- · 6 user control interface 6- · 7 band coupling 3- · 50 circuit description 6- · 5 base board CIT25 2- · 9 classical 3- · 18, 37 removing 4- ·...
  • Page 16 computer interface DJ Bass control 3- · 25 downward expander 3- · 49 RS-232 2- · 4 serial 2- · 4 computer interface 1- · 11 block diagram 6- · 51 connecting circuit description 6- · 12 DSP board through Win XP direct serial 2- · 58 connection to PC replacing 4- ·...
  • Page 17 high frequency limiter control 3- · 42, 52 headphones 1- · 23 limiter attack control 3- · 52 HF enhancer 3- · 7 maximum distortion control 3- · 43, 52 high frequency multiband drive control 3- · 45 excessive energy in source material 3- · 5 multiband gate threshold control 3- ·...
  • Page 18 and distortion 3- · 4 insufficient 5- · 6 insufficient due to poor peak control 5- · 1 J.17 loudness/distortion tradeoff 3- · 34 and 5500 digital I/O 1- · 8 L–R will not null 5- · 6 and NICAM 1- · 16 deemphasis applied to digital audio input 6- ·...
  • Page 19 PC hardware requirements 2- · 50 PC Remote oldies 3- · 19 aliases 3- · 64 Orban 222 stereo enhancer 3- · 26 moving alias folders 3- · 66 output multiple coexisting versions 3- · 65 analog output level trim adjustment 4- · 8 upgrading versions 3- ·...
  • Page 20 defeating 2- · 17, 18 limit 3- · 26 rear panel 2- · 4 quick setup 2- · 16 preset RECALL button 3- · 1 restoring archived 3- · 62 registration card 2- · 1 presets release backup 3- · 61 fast 3- ·...
  • Page 21 input/output 1- · 9 SCA inputs 2- · 5 lowpass filter 2- · 24 screen display 3- · 1 MPX power controller and 3- · 54 screens selecting 1- · 7 System Setup 2- · 14 setup 2- · 22 Security signal flow 3- ·...
  • Page 22 transformer composite isolation 2- · 9 troubleshooting warranty 1- · 25 installation 5- · 1 Warranty 1- · 25 two-band warranty 6- · 5 bass attack control 3- · 43 whistle on-air bass coupling control 3- · 41 troubleshooting 5- · 4 bass threshold control 3- ·...

  • Page 23: Section 1 Introduction

    Because OPTIMOD-FM incorporates several audio processing innovations exclusive to Orban products, you should not assume that it should be oper- ated in the same way as less sophisticated processors. If you do, you may get disappointing results.

  • Page 24: User-Friendly Interface

    If you wish to place level protection prior to your studio/transmitter link (STL), use an Orban studio level control system expressly designed for this purpose. (At the time of this writing, this is the Orban 8200ST OPTIMOD-Studio Compres- sor/Limiter/HF Limiter/Clipper.) The 8200ST can be adjusted so that it substitutes for...

  • Page 25: Flexible Configuration

    OPTIMOD-FM DIGITAL INTRODUCTION controls, each capable of driving 7in parallel with 47,000pF, (100ft/30m of coaxial cable).  The 5500 prevents aliasing distortion in subsequent stereo encoders or transmis- sion links by providing bandwidth-limiting and overshoot-compensated 15 kHz low-pass filters ahead of the 5500’s audio outputs and stereo encoder. ...

  • Page 26: Adaptability Through Multiple Audio Processing Structures

    A special Two- Band preset creates a no-compromise “Protect” function that is functionally similar to the “Protect” structures in earlier Orban digital processors. The Opti- mum Five-Band and the Two-Band structures can be switched via a mute-free crossfade;...

  • Page 27: Controllable

    OPTIMOD-FM DIGITAL INTRODUCTION the station’s sound and increasing loudness and definition remarkably, without producing unpleasant side effects.  The 5500 rides gain over an adjustable range of up to 25 dB, compressing dy- namic range and compensating for both operator gain-riding errors and gain in- consistencies in automated systems.

  • Page 28: Stand-Alone Stereo Encoder Operation

    INTRODUCTION ORBAN MODEL 5500  OPTIMOD-FM's software can be upgraded by running Orban-supplied downloadable upgrade software on a PC. The upgrade can occur remotely through the 5500’s Ethernet port or serial port (connected to an external mo- dem), or locally (by connecting a Windows® computer to the 5500’s serial port through the supplied null modem cable).

  • Page 29: Presets In Optimod-Fm

    OPTIMOD-FM DIGITAL INTRODUCTION Presets in OPTIMOD-FM There are two distinct kinds of presets in OPTIMOD-FM: factory presets and user presets. Factory Presets The Factory Presets are our “factory recommended settings” for various program formats or types. The description indicates the processing structure and the type of processing.

  • Page 30: Input/Output Configuration

    INTRODUCTION ORBAN MODEL 5500 User Presets are stored in non-volatile memory that does not require battery backup. To Create or Save a User Preset on page 3-14 has more about User Presets. Input/Output Configuration OPTIMOD-FM simultaneously accommodates:  Digital AES3 left/right inputs and outputs.

  • Page 31: Analog Left/Right Input/Output

    OPTIMOD-FM DIGITAL INTRODUCTION When the 5500 is operated as a stand-alone stereo encoder, the analog and digital outputs emit the same signal that drives the 5500’s stereo encoder DSP block. This signal may be lowpass filtered and/or protection-limited, depending on control set- tings in the active preset.

  • Page 32: Remote Control Interface

    1-10 INTRODUCTION ORBAN MODEL 5500 V p-p to produce 10% injection). Thus both inputs accommodate subcarrier genera- tors with output levels as low as 100 mV p-p. The correct peak level of the stereo program applied to the stereo encoder some- times depends on the number of subcarriers in use.

  • Page 33: Computer Interface

    1-11 OPTIMOD-FM DIGITAL INTRODUCTION  Input: Digital: Indicates that the 5500 is processing audio from its AES3 digital input.  Analog Input Silent: Indicates that the level at either or both analog input chan- nels is below the threshold set in step (A) on page 2-27. ...

  • Page 34: Location Of Optimod-Fm

    1-12 INTRODUCTION ORBAN MODEL 5500 kHz, or a 10 MHz sinewave or squarewave signal, 0.5 to 5 V peak. 10 MHz is a com- mon output frequency produced by GPS and rubidium frequency standards. You can configure the 5500 to lock its 19 kHz pilot tone and output sample frequency to this input.

  • Page 35: Best Location For Optimod-Fm

    1-13 OPTIMOD-FM DIGITAL INTRODUCTION identical complex frequency in the de-emphasis network. An all-pole de- emphasis network (like the classic series resistor feeding a grounded capacitor) is not appropriate. However, this network could be corrected by adding a second resistor between ground and the capacitor, which would introduce a zero. Low-pass filters (including anti-aliasing filters in digital links), high-pass filters, trans- formers, distribution amplifiers, and long transmission lines can all cause the above criteria to be violated, and must be tested and qualified.

  • Page 36: If The Transmitter Is Accessible

    You will achieve a louder sound on the air, with better control of peak modulation, than if you use most external stereo encoders. An exception is Orban’s 5518 stereo encoder, which does not add overshoot and contains its own overshoot limiter and composite limiter equivalent to the one in the 5500 when operated in its stand-alone stereo encoder mode.

  • Page 37: Studio-Transmitter Link

    If you require a long cable run, you can use Orban’s CIT25 Composite Isolation Transformer to break any ground loops. This transformer will ordinarily cure even the most stubborn hum or noise caused by the composite connection between OPTIMOD-FM and the exciter.

  • Page 38: Composite Baseband Microwave Stls

    1-16 INTRODUCTION ORBAN MODEL 5500 It is practical (though not ideal) to use lossy data reduction to pass unprocessed au- dio to the 5500’s input. The data rate should be at least of “contribution quality” — the higher, the better. If any part of the studio chain is analog, we recommend using at least 20-bit A/D conversion before encoding.

  • Page 39: Dual Microwave Stls

    (if any). The 5500 can only be located at the transmitter if the signal-to-noise ratio of the STL is good enough to pass unprocessed audio. The signal-to-noise ratio of the STL can be used optimally if an Orban Optimod-PC 1101, Optimod 6300, 8200ST Compressor/Limiter/HF Limiter/Clipper or an 4000 Transmission Limiter pro- tects the link from overload.

  • Page 40: Analog Landline (Ptt/Post Office Line)

    Some consultants presently offer modifications to minimize or eliminate this prob- lem. If your exciter or STL has this problem, you may contact Orban Customer Service for the latest information on such services. Analog Landline (PTT/Post Office Line) Analog landline quality is extremely variable, ranging from excellent to poor.

  • Page 41: Stl And Exciter Overshoot

    8100A/1) transmitter chassis in parallel. This is usually practical. However, complica- tions will occur if you are not using an Orban 8100AXT2 (also called 8100A/XT2) Six- Band Limiter Accessory with your 8100A1, because, to correctly drive a 5500, the ex- ternal AGC must be strapped as if it were driving an 8100A1 (or 8100A/1) + 8100AXT2 (or 8100A/XT2) system.

  • Page 42: About Transmission Levels And Metering

    1-20 INTRODUCTION ORBAN MODEL 5500 and decode cycles, because each cycle moves the added noise closer to the threshold where the added noise is heard. About Transmission Levels and Metering Meters Studio engineers and transmission engineers consider audio levels and their meas- urements differently, so they typically use different methods of metering to monitor these levels.

  • Page 43: Transmission Levels

    1-21 OPTIMOD-FM DIGITAL INTRODUCTION In facilities that use PPMs that indicate level directly in dBu, maximum program and line-up level is often +6 dBu. Instantaneous peaks will reach +11 dBu or more. ABSOLUTE PEAK Fig. 1-1: Absolute Peak Level, VU and PPM Reading Transmission Levels The transmission engineer is primarily concerned with the peak level of a program to prevent overloading or over-modulation of the transmission system.

  • Page 44: Composite Output Level

    5500’s input meter. Composite Output Level The Orban 5500 Audio Processor controls instantaneous, absolute peak levels to a tolerance of approximately 0.1 dB. Composite modulation is indicated in percent- age modulation, absolute instantaneous peak indicating. 100% is calibrated to the...

  • Page 45: Built-In Calibrated Bypass Test Mode

    1-23 OPTIMOD-FM DIGITAL INTRODUCTION Built-in Calibrated Bypass Test Mode A BYPASS Test Mode is available to transparently pass line-up tones generated ear- lier in the system. It will also pass program material, with no gain reduction or pro- tection against overmodulation. It can transparently pass any line-up tone applied to its input up to about 130% output modulation, at which point clipping may oc- cur.

  • Page 46: Eas Test

    1-24 INTRODUCTION ORBAN MODEL 5500 EAS Test For stations participating in the Emergency Alert System (EAS) in the United States, broadcast of EAS tones and data can be accomplished in three different ways: 1. Run EAS tones and data through the 5500.

  • Page 47: Pc Control And Security Passcode

    However, the limitation of any right or remedy shall not be effective where such is prohibited or restricted by law. Simply take or ship your Orban products prepaid to our service department. Be sure to include a copy of your sales slip as proof of purchase date. We will not repair transit damage under the no-charge terms of this warranty.

  • Page 48: International Warranty

    Warranty (yielding a total Warranty period of five years) by remitting to Orban ten percent of the gross purchase price of your Orban product. This offer applies only to new Orban products purchased from an authorized Orban Dealer.

  • Page 49: Section 2 Installation

    C) Complete the Registration Card and return it to Orban. (please) The Registration Card enables us to inform you of new applications, per- formance improvements, software updates, and service aids that may be...
  • Page 50 INSTALLATION ORBAN MODEL 5500 TYPE 18/3 SVT COR, TYP (3 x .82 mm WIRE COLOR CONDUCTOR NORMAL LINE BROWN BLACK NEUTRAL BLUE WHITE EARTH GND GREEN-YELLOW GREEN PLUG FOR 115 VAC (USA) TYPE H05VV - F - 0.75 CONDUCTOR WIRE COLOR...
  • Page 51 OPTIMOD-FM DIGITAL INSTALLATION TOPIC PAGE Audio Input and Audio Output Connections..........2-5 AES3 Digital Input and Output ..............2-7 Composite Output and Subcarrier Inputs ..........2-7 Wordclock/10 MHz Sync Reference Input ..........2-10 Grounding ....................2-10 5. Connect remote control interface. (optional) For a full listing of 5500’s extensive remote control provisions, refer to Remote Control Interface Programming on page 2-42.

  • Page 52: 5500 Rear Panel

    INSTALLATION ORBAN MODEL 5500 6. Connect tally outputs (optional) See the schematic on page 6-32. In stereo encoder mode, the 5500 supports two hardware tally outputs, which are NPN open-collector and operate with respect to pin 1 (common). Therefore, the voltage applied to the load (such as a relay or opto-isolator) must be positive.

  • Page 53: Input And Output Connections

    OPTIMOD-FM DIGITAL INSTALLATION user presets, tone or bypass modes, selecting stereo encoder modes (stereo, mono- left, mono-right, mono-sum), selecting analog, digital or digital+J.17 input, over- shoot compensation, SCA modulation compensation, and clock synchronization. (See Remote Control Interface Programming on page 2-42.) The 5500 remote control ac- cepts a DB-25 connector.

  • Page 54: Analog Audio Input

    INSTALLATION ORBAN MODEL 5500 any studio-wiring standard: If pin 2 or 3 is considered LOW, the other pin is automatically HIGH. Analog Audio Input  Nominal input level between –14 dBu and +8 dBu will result in normal operation of the 5500.

  • Page 55: Aes3 Digital Input And Output

    OPTIMOD-FM DIGITAL INSTALLATION  Use two-conductor foil-shielded cable (Belden 8451, or equivalent).  At the 5500’s output (and at the output of other equipment in the system), do not connect the cable’s shield to the CHASSIS GROUND terminal (pin 1) on the XLR-type connector.
  • Page 56 INSTALLATION ORBAN MODEL 5500 The output impedance of composite 1 output and composite 2 output can be set to 0 or 75 via jumpers J7 and J8 respectively (located on the Composite/SCA daugh- terboard). As shipped, the link is on pins 3 and 4, yielding 0  impedance. To reset a given output to 75, place the link on pins 1 and 2 of its associated jumper.
  • Page 57 AC power strip). If you encounter intractable ground loop or other noise problems between the 5500 and your exciter, we suggest purchasing the Orban CIT25 Composite Isolation Transformer. Designed to be installed adjacent to each exciter, the CIT25 provides rigorous ground loop isolation between the 5500 composite output and the ex- citer’s input and presents the 5500 with a balanced, floating load.

  • Page 58: Wordclock/10 Mhz Sync Reference Input

    2-10 INSTALLATION ORBAN MODEL 5500 Wordclock/10 MHz Sync Reference Input The sync reference input accepts a 1x 5V p-p squarewave wordclock signal or a 10 MHz sinewave or squarewave signal, 0.5 to 5 V peak. A menu item allows you to synchronize the output sample frequency to the frequency present at the sync.

  • Page 59: Circuit Ground

    If you are using an Orban 8100AST (or 8100A/ST) external AGC, refer to page 1-  If you are using an Orban 6300 as a studio level controller, refer to its Operating Manual. If you are using Orban 8200ST external AGC...
  • Page 60 2-12 INSTALLATION ORBAN MODEL 5500 If the STL transmitter’s pre-emphasis cannot be defeated, then configure the 8200ST for flat output. In this case average modulation levels of the STL may have to be re- duced to accommodate the overshoots. 1. Configure the 8200ST’s internal jumpers.
  • Page 61 2-13 OPTIMOD-FM DIGITAL INSTALLATION TOP OF MAIN BOARD Clipper Jumpers Output Pre-Emphasis Jumpers FLAT PRE-EMPHASIZED CLIPPER ON CLIPPER OFF LEFT RIGHT LEFT RIGHT OUTPUT OUTPUT OUTPUT OUTPUT Line-up Level Jumpers *PEAK LEFT RIGHT LEFT RIGHT OUTPUT OUTPUT OUTPUT OUTPUT Figure 2-4: 8200ST Jumper Settings (*Factory Configuration)

  • Page 62: Quick Setup (Audio Processor Mode)

    2-14 INSTALLATION ORBAN MODEL 5500 A) Turn off the tone by pressing the T button. B) Set controls as follows: HF LIMITER... Set to match the pre-emphasis of the transmission system L&R Out ................do not change GATE ....................12:00 RELEASE ....................12:00 VOICE ......................OFF...
  • Page 63 2-15 OPTIMOD-FM DIGITAL INSTALLATION 1. Press the front-panel Setup button. 2. Press the Quick Setup soft button when its label appears on the display. Quick Setup presents a guided sequence of screens into which you must insert in- formation about your particular requirements. In general, the screens are self- explanatory.
  • Page 64  If you are using an Orban 4000 Transmission Limiter, set field to (so that the AGC function in the 5500 continues to work). The Orban 4000 is a transmission system overload protection device; it is normally operated be- low threshold. It is not designed to perform an AGC or gain-riding function, and it cannot substitute for the AGC function in the 5500.
  • Page 65 2-17 OPTIMOD-FM DIGITAL INSTALLATION You will set the operating levels of the 5500 to match the input levels it is receiv- ing so the 5500’s AGC can operate in the range for which it was designed. There are separate settings for the analog and digital inputs. If you provide both ana- log and digital inputs to the 5500, optimum adjustment is achieved when the gain reduction meters show the same amount of processing for both analog and digital inputs.
  • Page 66 2-18 INSTALLATION ORBAN MODEL 5500 If you are sending the analog output of the 5500 through a digital link that uses lossy compression (like MPEG, APT-X, or Dolby), set the output Lossy codecs cannot handle pre-emphasized signals. 12. Set digital output to be flat or pre-emphasized.
  • Page 67 2-19 OPTIMOD-FM DIGITAL INSTALLATION 15. Set the composite output level. [Skip this step if you will not be using the composite output(s).] A) Observe the modulation produced by the 5500’s C 1 on a OMPOSITE UTPUT modulation monitor or modulation analyzer. Turn the knob to make the modulation monitor read 100% modulation (usually 75 kHz deviation).
  • Page 68 (e.g., “Z-100”). The name can be up to eight characters long. It is used to identify your 5500 to Orban’s PC Remote application, and appears on the Main Screen when the 5500 is being controlled by the PC Remote application.
  • Page 69 2-21 OPTIMOD-FM DIGITAL INSTALLATION 20. Activate the 5500’s ITU-R BS412-9 multiplex power controller (optional). [Skip this step if ITU-R BS412 is not enforced in your country. At the time of this writing, it is only enforced in certain European countries. If your country does not enforce ITU-R BS412, set the ITU412-9 control to OFF.] [If you are planning to use the 5500 in its stand-alone stereo encoder mode, make sure that the multiplex power controller is turned off until you have fin-...

  • Page 70: Setup For Stand-Alone Stereo Encoder Mode

    2-22 INSTALLATION ORBAN MODEL 5500 B) Hold down the appropriate M button and turn the knob to set EDUCTION the amount of modulation reduction produced by the M 1 and EDUCTION 2 functions. EDUCTION You can program these to be activated via any rear-panel GPI input or by the 5500’s clock-based automation.
  • Page 71 2-23 OPTIMOD-FM DIGITAL INSTALLATION 2. Turn the 5500’s ITU-412 MPX power controller off. When on, it causes gain reduction that makes it impossible to set the AI and DI reference level controls correctly with test tones. See step 20 on page 2-21.
  • Page 72 2-24 INSTALLATION ORBAN MODEL 5500 In step 6 in Quick Setup (page 2-16), make sure that you have set the 5500’s preemphasis to match the preemphasis of the input signal. Even though the 5500 is not applying preemphasis, its L/R overshoot limiter needs to be aware of the input signal’s preemphasis because the over-...
  • Page 73 C) Set the control to I This activates a peak limiter similar to the one in Orban’s 8218 and 5518 Stereo Encoders. The limiter controls peaks with a combination of look- ahead limiting and band-limited clipping. There are two limiters, operat- ing independently on the left and right channels.
  • Page 74 When operating in Half-Cosine mode, the composite limiter produces somewhat less brightness but does not compromise stereo imaging. Be- cause this mode produces lower subjective distortion, Orban’s factory programmers prefer the sound of the Half-Cosine mode. In either mode, the baseband output is overshoot compensated and bandlimited to 53 kHz, unlike conventional composite clippers.
  • Page 75 2-27 OPTIMOD-FM DIGITAL INSTALLATION “digital input” silence detector is used for automatic input switching. (See step 12 below.) Silence sense will be activated if either channel falls silent, thus also pro- tecting against “loss-of-one-stereo-channel” faults. If silence is detected at the analog input as well as the digital input (as in the case of a studio operational fault), automatic switching will not oc- cur.

  • Page 76: Analog And Digital I/O Setup

    1. Temporarily set the external AGC mode to “No.” A) Navigate to Setup > Next > Next > E AGC and set E AGC to N . (It may be set to N already.) If you are using a external AGC like the Orban 6300, you should restore...
  • Page 77 2-29 OPTIMOD-FM DIGITAL INSTALLATION this setting to Y after the setup procedure is complete. 2. Adjust Input selector. A) Navigate to Setup > I/O C > A > I ALIB ALIB NPUT B) Set the I to A NPUT NALOG The 5500 will automatically switch to analog input if signal lock is un- available at the AES3 input.
  • Page 78 INSTALLATION ORBAN MODEL 5500 If you are using a studio level controller that performs an AGC function, such as an Orban 8200ST OPTIMOD-Studio, adjust it for normal opera- tion. c) Adjust the AI R (VU or PPM) control to make the 5500’s AGC meter indicate 10 dB gain reduction.
  • Page 79 6. Defeat final clipper (optional). If you are using the 5500 to drive a network with protection audio processors (like Orban’s Optimod-FM 2300) at each transmitter, you may wish to defeat the 5500’s final clipper to prevent double clipping, which will unnecessarily increase distortion on-air.
  • Page 80 2-32 INSTALLATION ORBAN MODEL 5500 It is not possible to apply the delay to only one of the two composite outputs. F) If you are using the diversity delay, set its value using the D VRSTY control. The control sets the delay applied to the composite, analog, and digi- tal outputs when these outputs have been configured to receive delay.
  • Page 81 2-33 OPTIMOD-FM DIGITAL INSTALLATION feat the pre-emphasis in your stereo encoder or if you will use the analog output for monitoring, set the output F If you are sending the analog output of the 5500 through a digital link that uses lossy compression (like MPEG, APT-X, or Dolby), set the output Lossy codecs cannot handle pre-emphasized signals.
  • Page 82 2-34 INSTALLATION ORBAN MODEL 5500 If you have (inappropriately) set AO S in step (B) above, OURCE ONITOR the peak level will not be well controlled because no peak limiting has been applied to this signal. This will also be true if you have defeated the final clipper (step 6 on page 2-31).
  • Page 83 2-35 OPTIMOD-FM DIGITAL INSTALLATION 1x wordclock applied to the 5500’s R BNC connector), or I NTERNAL (the internal crystal-controlled DSP clock oscillator).  If D is chosen and no valid signal is available at the unit’s digital input, the 5500 automatically switches the sync source to the R BNC connector.

  • Page 84: Automation Using The 5500'S Internal Clock

    2-36 INSTALLATION ORBAN MODEL 5500 K) Using a modulation monitor or modulation analyzer, adjust the DO 100% con- trol to make the modulation monitor read 100% modulation (usually 75 kHz deviation). See the notes in step (8.D) on page 2-33.
  • Page 85 2-37 OPTIMOD-FM DIGITAL INSTALLATION b) When you are finished, press 2. Navigate to Setup > Next > Automation. If the A button reads D , hold it down and turn the knob to en- UTOMATION ISABLED able automation. This button allows you to easily enable or disable all automation events without having to edit individual automation events.
  • Page 86 2-38 INSTALLATION ORBAN MODEL 5500  stereo mode  mono-from-left-channel (MONO-L) mode  mono-from right-channel (MONO-R) mode  mono-from-sum-of-channels (MONO-SUM)  bypass mode  Independently activate and defeat the diversity delay applied to the analog, digital, and composite outputs. ...

  • Page 87: Security And Passcode Programming

    2-39 OPTIMOD-FM DIGITAL INSTALLATION This action will immediately delete the event. There is no “are you sure” warning message. To abort the deletion, press the E button, not the button. ELETE VENT Security and Passcode Programming [Skip this step if you do not plan to use PC Remote software or do not plan to lock out the front panel locally.] The 5500 has several levels of security to prevent unauthorized people from chang- ing its programming or operating state.

  • Page 88: To Edit A Passcode

    2-40 INSTALLATION ORBAN MODEL 5500 C) When you have finished entering your new passcode, write it down so you do not forget it. Then press the Next button. If you wish to discard the passcode you just entered, press the E button instead.

  • Page 89: To Program Local Lockout

    2-41 OPTIMOD-FM DIGITAL INSTALLATION To Program local lockout: A) Navigate to Setup > S ECURITY If the front panel is already password protected, you can only access this screen by entering a passcode with A privileges. CCESS B) Hold down the A soft button and turn the knob to set the desired UTOLOCK lockout time (if any).

  • Page 90: Remote Control Interface Programming

    2-42 INSTALLATION ORBAN MODEL 5500 The Restore Defaults screen appears. C) To gain access to the 5500, press the E soft button. RASE ASSCODES D) Reprogram passcodes as necessary; see To Create a Passcode on page 2-39. The RESTORE DEFAULTS button (in the Restore Defaults screen) restores all System Setup and Input/Output parameters to their factory default settings.

  • Page 91: Networking And Remote Control

    2-43 OPTIMOD-FM DIGITAL INSTALLATION  Stereo: Determines the operating mode of the audio processing (S TEREO , or M LEFT IGHT  Mono from Left, Mono from Right, or Mono from Sum: switches the 5500’s stereo encoder off, using the Left, Right, or Sum (L+R) respectively as the pro- gram source.
  • Page 92 2-44 INSTALLATION ORBAN MODEL 5500 A) Navigate to Setup > N & R > Next. ETWORK EMOTE B) Press the S IP A soft button. DDRESS The IP Address Screen appears. a) Use the Next and Prev keys to move the cursor in turn to each digit in the IP address.
  • Page 93 You will need two modems and two available phone lines, one of each for your PC and your 5500. Orban Customer Service supports only the 3Com/U.S. Robot- ics® 56kbps fax modem EXT on the 5500 side of your connection, although other 56kbps modems will often work OK.

  • Page 94: Synchronizing Optimod To A Network Time Server

    2-46 INSTALLATION ORBAN MODEL 5500 Synchronizing Optimod to a Network Time Server [Skip this section if you do not wish to automatically synchronize your Optimod’s in- ternal clock to a network timeserver, which may be part of your local network or lo- cated on the Internet.]...
  • Page 95 2-47 OPTIMOD-FM DIGITAL INSTALLATION UTC is also known as GMT, or Greenwich Mean Time.  The value can range between –12 and +12 hours. If this value is set to 0, your Optimod’s time will be the same as UTC. ...
  • Page 96 2-48 INSTALLATION ORBAN MODEL 5500 same gateway address that you set in step (1.D) on page 2-44. If you do not know the correct gateway address, you can often discover it by connecting a Windows computer to the same Ethernet cable that is ordinarily plugged into your Optimod.

  • Page 97: Installing 5500 Pc Remote Control Software

    5500’s serial port. (These services are also used to upgrade your 5500’s firmware when updates are available from Orban.) The exact process will vary, depending on how you wish to set up the communications. That is: ...

  • Page 98: Check Hardware Requirements

    If connecting by modem: a 3Com/U.S. Robotics® 56kbps fax modem EXT and normal (not null) modem cable for the 5500 side of the connection. Note that Orban Customer Service does not support any other type of modem for connect- ing to the 5500.

  • Page 99: Running The Orban Installer Program

     You might have obtained the automatic installer application from some other source than Orban’s CD, like Orban’s ftp site or another computer on your net- work. If so, just run the application and follow the on-screen instructions. ...

  • Page 100: Conclusion

    5500 questions, please contact Orban Customer Service: phone: +1 510 351-3500 email: custserv@orban.com For details on your new 5500 software, from new features to operational sugges- tions, refer to our FTP site (ftp.orban.com/5500).

  • Page 101: Appendix: Setting Up Serial Communications

    5500 PC Remote application. The appendix provides procedures for both the Windows 2000 and Windows XP operating systems. Note that the screen shots were prepared using Orban’s Optimod-FM 8300 but apply equally well to the 5500. Preparing for Communication through Null Modem Cable 1.
  • Page 102 2-54 INSTALLATION ORBAN MODEL 5500 Cannot Access the Internet After Making a Direct or Modem Connection of the 5500 on page 5-8. 1. Add and configure a Direct Connection for Windows 2000: A) Create a New Windows 2000 Direct Connection:...
  • Page 103 2-55 OPTIMOD-FM DIGITAL INSTALLATION i) In the drop-down box, select the serial port you will be using to make the connection. j) Click “Next.” k) Select either “For all users” or “Only for myself.” The correct setting depends on how your network and security are configured.
  • Page 104 2-56 INSTALLATION ORBAN MODEL 5500 o) Click “Yes.” B) Edit your new Direct Connection properties: a) Click “Settings.” b) Click the “General” tab. c) Select the device you set up in step (i) on page 2-55. This will usually “Com-...
  • Page 105 2-57 OPTIMOD-FM DIGITAL INSTALLATION e) Set “Maximum speed (bps)” “115200.” f) Check “Enable hardware flow con- trol.” g) Make sure that all other boxes are not checked. h) Click “OK.” i) Select the Networking tab. j) Make sure that “PPP: Windows 95/98/NT 4/2000, Internet”...

  • Page 106: Connecting Using Windows Xp Direct Serial Connection

    2-58 INSTALLATION ORBAN MODEL 5500 2. Launch an existing Windows 2000 Direct connection. Once you have set up a “connection” specifying Direct Connect in the 5500 PC Remote application (see To set up a new connection on page 3-59), choosing this connection from 5500 PC Remote automatically opens a Windows Direct Connec- tion to your 5500.
  • Page 107 2-59 OPTIMOD-FM DIGITAL INSTALLATION c) Give your 5500 a name (e.g., “KABC”) by entering this name in the “5500 Alias” field. d) If you wish to have 5500 PC Remote remember password this Optimod, enter the password in the “Password“ field. e) Select “Serial Connection.”...
  • Page 108 2-60 INSTALLATION ORBAN MODEL 5500 k) Type in a name for your Connection such “Connection to 5500.” l) Click “Finish.” m)Click “Yes.” B) Edit your new Direct Con- nection properties: a) Click “Settings.”...
  • Page 109 2-61 OPTIMOD-FM DIGITAL INSTALLATION b) Click the “General” tab. c) Select the device you set up in step (i) on page 2-59. This will usually be “Communications cable between two computers (COM1).” d) Click “Configure.” e) Set the “Maximum Speed (bps)” to 115200.
  • Page 110 2-62 INSTALLATION ORBAN MODEL 5500 i) Select the Networking tab. j) Make sure that “PPP: Windows 95/98/NT 4/2000, Internet” appears in the “Type of dial-up server I am calling” field. k) Make sure that “Internet Protocol (TCP/IP) is checked. You may leave “File...

  • Page 111: Preparing For Communication Through Modems

    You will need two modems and two available phone lines, one of each for your PC and your 5500. Reminder: Orban supports only the 3Com/U.S. Robotics® 56kbps fax mo- dem EXT on the 5500 side (although other 56kbps modems will often work OK).
  • Page 112 2-64 INSTALLATION ORBAN MODEL 5500 Use either an internal modem or external modem with your computer. a) If you are using an external modem, connect the modem to a serial port on your PC and make sure the modem is connected to a working phone line.
  • Page 113 2-65 OPTIMOD-FM DIGITAL INSTALLATION c) Give your 5500 a name (e.g., “KABC”) by entering this name in the “5500 Alias” field. d) If you wish to have 5500 PC Remote remember password this Optimod, enter the password in the “Password“ field. e) Select “Serial Connection.”...
  • Page 114 2-66 INSTALLATION ORBAN MODEL 5500 k) Select either “For users” “Only myself.” The correct setting depends on how your network and security are con- figured. This screen appear computers set up for single users. l) Click the “Next” button. m)Type in a name for your Connection such as: “Con-...
  • Page 115 2-67 OPTIMOD-FM DIGITAL INSTALLATION D) Edit your new Direct Connection prop- erties: a) Click “Settings.” b) Click the “General” tab. c) In the “Connect using” field, select the modem you will be using to make the connection on the PC side. d) Click “Configure.”...
  • Page 116 2-68 INSTALLATION ORBAN MODEL 5500 e) Set “Maximum speed (bps)” to “115200.” f) Check “Enable hard- ware flow control.” g) Check “Enable dem error control.” h) Check “Enable mcdem compression.” i) Make sure that all other boxes are not checked.

  • Page 117: Connecting Using Windows Xp Modem Connection

    2-69 OPTIMOD-FM DIGITAL INSTALLATION 2. Launch a Windows 2000 Modem connection. Once you have set up a “connection” specifying a modem connection in the 5500 PC Remote application (see To set up a new connection on page 3-59), choosing this connection from 5500 PC Remote automatically opens a Windows modem connection to your 5500.
  • Page 118 2-70 INSTALLATION ORBAN MODEL 5500 Not all PCs have a COM2. IMPORTANT: The COM port you choose at this point must match the COM port to which you connected your modem. g) From the tabs at the top, choose “Port Settings” and configure the settings to match your PC modem.
  • Page 119 2-71 OPTIMOD-FM DIGITAL INSTALLATION C) Create a new Windows XP modem connec- tion: a) Launch 5500 PC Remote. b) Choose “Connect > New 5500.” The Connection Properties win- dow opens. c) Give your 5500 a name (e.g., “KABC”) by entering this name in the “5500 Alias” field.
  • Page 120 2-72 INSTALLATION ORBAN MODEL 5500 j) Enter phone number of the modem connected to the 5500 you are setting up. k) Click “Next.” l) Type in a name for your Connection such “Connection 5500 – Modem” m)Click “Finish” button. n) Click “Yes.”...
  • Page 121 2-73 OPTIMOD-FM DIGITAL INSTALLATION D) Edit your new Direct Connection proper- ties: a) Click “Settings.” b) Click the “General” tab. c) Select the modem you will be using to make the connection on the PC side. d) Click “Configure.”...
  • Page 122 2-74 INSTALLATION ORBAN MODEL 5500 e) Set “Maximum speed (bps)” to “115200.” f) Check “Enable hardware flow control.” g) Check “Enable modem error control.” h) Check “Enable mcdem compression.” i) Make sure that no other box is checked. j) Click “OK.”...

  • Page 123: Updating Your 5500'S Software

    2. Install the latest version of 5500 PC Remote software on your computer. This is available from ftp://orban.com/5500 See Installing 5500 PC Remote Control Software on page 2-49. See the readme5500_x.x.x.x.htm file (where x.x.x.x is the version number) for de- tails about the upgrade not given in this manual.
  • Page 124 2-76 INSTALLATION ORBAN MODEL 5500 4. Update your 5500. A) Attempt to initiate communication to your 5500 via your connection. See To initiate communication on page 3-59. 5500 PC Remote will automatically detect that the 5500 software version on your 5500 is not the same as the version of 5500 PC Remote. PC Re- mote will then offer to update your 5500 automatically.

  • Page 125: Section 3 Operation

    OPTIMOD-FM DIGITAL OPERATION Section 3 Operation 5500 Front Panel  Screen Display labels the four soft buttons and provides control-setting infor- mation.  Screen Contrast button adjusts the optimum viewing angle of the screen dis- play.  Four Soft buttons provide access to all 5500 functions and controls. The func- tions of the soft buttons change with each screen, according to the labels at the bottom of each screen.
  • Page 126 OPERATION ORBAN MODEL 5500  Input meters show the peak input level applied to the 5500’s analog or digital inputs with reference to 0 = digital full-scale. If the input meter’s red segment lights up, you are overdriving the 5500’s analog to digital converter, which is a very common cause of audible distortion.

  • Page 127: Introduction To Processing

    OPTIMOD-FM DIGITAL OPERATION  AGC meter shows the gain reduction of the slow two-band AGC processing that precedes the multi-band compressor. Full-scale is 25 dB gain reduction. You can switch the meter so that it reads the gain reduction of the Master (above-200 Hz) band, the Bass (below-200Hz) band, or the difference between the gain re- ductions in the Master and Bass bands.

  • Page 128: Distortion In Processing

    In FM processing, there is a direct trade-off between loudness, brightness, and dis- tortion. You can improve one only at the expense of one or both of the others. Thanks to Orban’s psychoacoustically optimized designs, this is less true of Orban processors than of any others. Nevertheless, all intelligent processor designers must acknowledge and work within the laws of physics as they apply to this trade-off.

  • Page 129: Fundamental Requirements: High-Quality Source Material And Accurate Monitoring

    OPTIMOD-FM DIGITAL OPERATION  open but more uniform in frequency balance (and often more dramatic) than the input (using the Five-Band structure with slow release times)  dense, quite squashed, and very loud (using the Five-Band structure with fast or medium-fast release times) The dense, loud setup will make the audio seem to jump out of car and table radios, but may be fatiguing and invite tune-outs on higher quality home receivers.

  • Page 130: About The 5500'S Signal Processing Features

    OPERATION ORBAN MODEL 5500 emphasis process. Although the 5500 loses less high frequency energy than most other processors (due to its sophisticated high frequency limiting and clipping tech- nology), it is nevertheless no match for CDs that are mastered so bright that they will curl the vinyl off car dashboards.
  • Page 131 622B), using a sophisticated and proprietary optimization program. The curves are matched to better than 0.15 dB. This means that their sound is very close to the sound of an Orban analog parametric. They also use very high quality filter algo- rithms to ensure low noise and distortion.
  • Page 132 DSP-derived Stereo Encoder: The 5500’s stereo encoder is derived from algo- rithms first developed for the high-performance Orban 8218 stand-alone encoder. The 5500’s stereo encoder operates at 512 kHz-sample rate to ease the performance requirements of the D/A converter’s reconstruction filter, making it possible to achieve excellent stereo separation that is stable over time and temperature.

  • Page 133: Stand-Alone Stereo Encoder Mode

    OPTIMOD-FM DIGITAL OPERATION We succeeded in our effort. The 5500 offers a patented “Half-Cosine Interpolation” composite limiter that provides excellent spectral protection of the pilot tone and SCAs (including RDS), while still providing approximately 50 dB of separation when a single-channel composite waveform is clipped to 3 dB depth.

  • Page 134: Itu-R 412 Compliance

    3-10 OPERATION ORBAN MODEL 5500 15, 16, or 17 kHz lowpass filtering, and the requisite preemphasis and deempha- sis filters to allow the 5500 to accept, flat, preemphasized, or flat+J17 preem- phasized audio.  Left/Right Overshoot Limiter. This is intended to remove overshoots in stu- dio/transmitter links caused by lossy digital audio compression (like MP2) or by unflat frequency response and group delay distortion.

  • Page 135: Input/Output Delay

    OPERATION Input/Output Delay The algorithmic improvements in the 5500 over earlier generations of Orban DSP- based processing (8200 and 2200) have one significant cost — the input/output time delay is typically 15 ms. To make intelligent decisions about how to process, the 5500 needs to look ahead at the next part of the program waveform.

  • Page 136: Basic Modify

    5500 users will never need to go beyond the Basic level of control. The combinations of subjective setup control settings produced by this control have been optimized by Orban’s audio processing experts on the basis of years of experience designing audio processing, and upon hundred of hours of listening tests.

  • Page 137: Advanced Modify

    3-13 OPTIMOD-FM DIGITAL OPERATION once you have edited a preset’s dynamics parameters in Full Modify, control is no longer available in Basic Modify and will be grayed-out if you access its screen. As noted above, we recommend using the Basic Modify L control to achieve a sound as close as possi- ble to your desired sound before you make further modifications at the Full Modify level.

  • Page 138: To Create Or Save A User Preset

    3-14 OPERATION ORBAN MODEL 5500 Further, be aware of the different peak factors on voice and music — if voice and music are peaked identically on a VU meter, voice may cause up to 10 dB more peak gain reduction than does music! (A PPM will indicate relative peak levels much more accurately.)

  • Page 139: About The Processing Structures

    3-15 OPTIMOD-FM DIGITAL OPERATION also allows you to archive presets to your computer’s hard drive (or other storage device) and to restore them. However, archiving a preset is not the same as sav- ing it. Archived presets reside on a storage medium supported by your computer, while saved presets reside in the 5500’s local non-volatile memory.

  • Page 140: Factory Programming Presets

    Both the Two-Band and Five-Band multiband compressors always operate in the background. So switching between Two-Band and Five-Band occurs with a seamless cross-fade. Unlike older Orban processors like the 8200, no DSP code is reloaded and no audio mute is necessary.
  • Page 141 3-17 OPTIMOD-FM DIGITAL OPERATION setting of each preset. Some of the Five-Band presets appear several times un- der different names because we felt that these presets were appropriate for more than one format; these can be identified by a shared source preset name. Some of the presets come in several “flavors,”...
  • Page 142 3-18 OPERATION ORBAN MODEL 5500 lier Orban’s processors, the 5500 lets you make changes in EQ (and stereo enhance- ment) without losing the ability to use L settings. Of course, L is still available for the unedited preset if you want to go back to it.
  • Page 143 3-19 OPTIMOD-FM DIGITAL OPERATION There is also a corresponding two-band preset called CLASSICAL-2B+AGC. In our opinion, this provides an ideal combination of unobtrusive compression and low coloration, typically raising low-level material about 10 dB. BASS-PUNCH produces a slight increase in bass energy below 100 Hz and a decrease of bass energy centered at 160 Hz.
  • Page 144 3-20 OPERATION ORBAN MODEL 5500 SPORTS: Similar to NEWS-TALK except the AGC RELEASE (AGC Release Time) is slower and the GATE THRESH (Gate Threshold) is higher. This recognizes that most sports programming has very low signal-to-noise ratio due to crowd noise and other on-field sounds, so the preset does not pump this up as the NEWS-TALK preset would tend to do.
  • Page 145 3-21 OPTIMOD-FM DIGITAL OPERATION are therefore more likely to encourage longer times spent listening than are these “loud” presets. For Album-Oriented Rock (AOR) we recommend the ROCK-LOUD or BASS-SLAM with L turned down somewhat (depending on your market and competi- tive situation).

  • Page 146: Equalizer Controls

    3-22 OPERATION ORBAN MODEL 5500 Equalizer Controls Table 3-2 summarizes the equalization controls available for the Five-Band structure. (Note that “advanced” controls are accessible only from 5500 PC Remote software.) Most equalization controls are common to both the Two-Band and Five-Band struc- tures.
  • Page 147 Low Frequency Parametric Equalizer is a specially designed parametric equalizer whose boost and cut curves closely emulate those of a classic Orban analog para- metric equalizer with conventional bell-shaped curves (within 0.15 dB worst-case).
  • Page 148 3-24 OPERATION ORBAN MODEL 5500 MID FREQ determines the center frequency of the equalization, in Hertz. Range is 250-6000Hz. MID GAIN determines the amount of peak boost or cut (in dB) over a 10 dB range. MID WIDTH determines the bandwidth of the equalization, in octaves.
  • Page 149 The difference will never exceed the difference that would have otherwise occurred if the lowest frequency band was independently gated. If you are familiar with older Orban processors like the 8200, this is the maximum amount of boost that would have occurred if you had set their...

  • Page 150: Stereo Enhancer Controls

    5500 conservatively and not attempting to achieve very high on-air loudness. You have somewhat more leeway than you do in older Orban FM processors like the 8200 because the 5500’s new distortion control will work to help prevent audible speech distortion even when the phase rotator is switched out.

  • Page 151: Agc Controls

    3-27 OPTIMOD-FM DIGITAL OPERATION AGC Controls The AGC is common to the Two-Band and Five-Band structures. Five of the AGC controls are common to the Full Modify and Advanced Modify screens, with additional AGC controls available in the Advance Modify screen, as noted in the following table.
  • Page 152 ORBAN MODEL 5500 processing (such as a CLASSICAL preset). The AGC is also ordinarily defeated if you are using a studio level controller (like Orban’s 8200ST). However, in this case it is better to defeat the AGC globally in System Setup.
  • Page 153 3-29 OPTIMOD-FM DIGITAL OPERATION noise or background sounds and cause the AGC or multiband compressor to gate, effectively freezing gain to prevent noise breathing. There are two independent gating circuits in the 5500. The first affects the AGC and the second affects the multiband compressor. Each has its own threshold control. The multiband compressor gate causes the gain reduction in bands 2 and 3 of the multiband compressor to quickly move to the average gain reduction occurring in those bands when the gate first turns on.

  • Page 154: Advanced Agc Controls

    Previous Orban AGCs had compression ratios very close to :1, which produces the most consistent and uniform sound. However, the 5500 compressor can reduce this...
  • Page 155 3-31 OPTIMOD-FM DIGITAL OPERATION ratio to as low as 2:1. This can add a sense of dynamic range and is mostly useful for subtle formats like classical and jazz. This control reduces the available range of AGC gain reduction because it acts by at- tenuating the gain control signal produced by the AGC sidechain.
  • Page 156 3-32 OPERATION ORBAN MODEL 5500 control to 3.0 and the AGC M AXIMUM ELTA EDUCTION ASTER ELTA HRESHOLD control to some positive number, depending on how much automatic width control you want the 5500 to perform. AGC Bass Delta Threshold works the same as AGC M...

  • Page 157: Clipper Controls

    (Note that “advanced” controls are accessible only from 5500 PC Remote software.) Bass Clip (“Bass Clip Threshold”) sets the threshold of Orban’s patented embedded bass clipper with reference to the final clipper. The bass clipper is embedded in the multiband crossover so that any distortion created by clipping is rolled off by part of the crossover filters.
  • Page 158 3-34 OPERATION ORBAN MODEL 5500 distortion on speech. CLIP SHAPE (“Bass Clip Shape”) allows you to change shape of the knee of the in- put/output gain curve of the bass clipper. The “knee” is the transition between no clipping and flat topping. A setting of “0” provides the hardest knee. “10” is the...
  • Page 159 3-35 OPTIMOD-FM DIGITAL OPERATION terial will be frequency-shifted upon demodulation, and will no longer bear a harmonic relationship to the material that produced them. Mathematically, these harmonics will be located at the same frequencies as harmonics caused by clipping in a simple digital-domain clipper (with no anti-aliasing) operating at 38 kHz sample rate.

  • Page 160: The Two-Band Structure

    Five-Band structure. Like the “Two-Band Purist” structure in Orban’s OPTIMOD-FM 8200, the 5500’s Two-Band Structure is phase-linear through- out to maximize sonic transparency.

  • Page 161: Setting Up The Two-Band Structure For Classical Music

    3-37 OPTIMOD-FM DIGITAL OPERATION PROTECTION 5DB if you want about 5 dB of limiting to occur at the maximum normal input level. The L control affects only the input drive, and you can use it to set a nomi- nal limiting level different from 0 dB or 5 dB. The Protection presets have the same Intermediate and Advanced Modify controls available as the Two-Band structure.

  • Page 162: Customizing The Settings

    3-38 OPERATION ORBAN MODEL 5500 There are also two five-band classical presets. The preset uses the CLASSICAL-5 BAND five-band structure with AGC defeated. It uses substantial interband coupling to re- tain much of the frequency balance of the original source, but is capable of some- what more “automatic equalization”...
  • Page 163 3-39 OPTIMOD-FM DIGITAL OPERATION FM’s density gently increases between 0 and 10 dB of compression, 10 dB of com- pression sounds very natural, even on classical music. 2B REL (“2B Release”) control determines how fast the two-band compressor re- leases (and therefore how quickly loudness increases) when the level of the program material decreases.
  • Page 164 3-40 OPERATION ORBAN MODEL 5500 point beyond which increasing density (with faster settings of the 2B R control) will no longer yield more loudness, and will simply degrade the punch and defini- tion of the sound. When the 2B R control is set between 8 and 1 dB/second (the slowest settings), the amount of gain reduction is surprisingly non-critical.
  • Page 165 3-41 OPTIMOD-FM DIGITAL OPERATION may increase the musicality of the compression by slowing down recovery on mod- erate-level to low-level musical passages. When such passages cause the gate to cy- cle on and off, recovery time will be slowed down by the ratio of the “on-time” to the “off time.”...

  • Page 166: Advanced Two-Band Controls

    3-42 OPERATION ORBAN MODEL 5500 of high frequencies (due to high frequency limiting) and excessive distortion (due to clipping). 2B 6-15 kHz Frequency Limiter sets the amount of additional gain reduction oc- curring in 6-15 kHz band of the 2-band high frequency limiter. This extra gain reduc- tion is triggered whenever high frequency energy would otherwise cause excessive distortion in the final clipper.

  • Page 167: The Five-Band Structure

    3-43 OPTIMOD-FM DIGITAL OPERATION Band Compressor. As the Two-Band Compressor B control is moved towards “100%,” the 2B B control affects the sound less and less. HRESHOLD 2B Master Attack sets the attack time of the Two-Band Compressor master com- pressor (above 200Hz).

  • Page 168: Putting The Five-Band Structure On The Air

    3-44 OPERATION ORBAN MODEL 5500 Putting the Five-Band Structure on the Air The Five-Band structure is very flexible, enabling you to fine-tune your on-air sound to complement your programming. There are numerous Factory Programming Pre- sets. They offer considerable variety, with various combinations of release time, equalization, low frequency coupling, and high frequency coupling.
  • Page 169 3-45 OPTIMOD-FM DIGITAL OPERATION in Section 3. (Note that “advanced” controls are accessible only from 5500 PC Re- mote software.) MB DRIVE (“Multiband Drive”) control adjusts the signal level going into the multi- band compressor, and therefore determines the average amount of gain reduction in the multiband compressor.
  • Page 170 3-46 OPERATION ORBAN MODEL 5500 ended noise reduction. When the release time of the multiband compressor is set to its faster settings, the setting of the M control becomes much more critical to sound quality ULTIBAND RIVE because density increases as the control is turned up. Listen carefully as you adjust it.
  • Page 171 3-47 OPTIMOD-FM DIGITAL OPERATION different pieces of source material than does the Two-Band structure, SLOW is almost always preferable to the Two-Band structure for any popular music format. The Medium Slow settings (MED and MED2) are appropriate for more adult-oriented formats that need a glossy show-business sound, yet whose ratings depend on maintaining a longer time spent listening than do conventional Contemporary Hit Radio (CHR) formats.
  • Page 172 3-48 OPERATION ORBAN MODEL 5500 dense and fatiguing when the radio is played loudly. Bx THR (“Band x Compression Threshold”) controls set the compression threshold in each band, in units of dB below the final clipper threshold. We recommend making small changes around the factory settings to avoid changing the range over which the MB CLIPPING control operates.
  • Page 173 3-49 OPTIMOD-FM DIGITAL OPERATION The most effective setting for this control is “0 dB” for almost all program material. However, the loudest and most intense-sounding presets rely on considerable clip- ping to achieve their loudness and brightness. For these presets, we found it neces- sary to set the control substantially higher than “0”...
  • Page 174 3-50 OPERATION ORBAN MODEL 5500 Obviously, the correct setting will be different for a sporting event than for classical music. It may be wise to define several presets with different settings of the MB control and to recall the preset that complements the program ma- XPANDER terial of the moment.

  • Page 175: Advanced Multiband Controls

    These controls, which have never previously been available in an Orban processor, are risky and difficult to adjust appropriately. They affect the sound of the processor in many subtle ways.
  • Page 176 3-52 OPERATION ORBAN MODEL 5500 results are strongly program-dependent, and must be verified with listening tests to a wide variety of program material. The A time controls are calibrated in arbitrary units. Higher numbers corre- TTACK spond to slower attacks.

  • Page 177: Itu-R Multiplex Power Controller

    3-53 OPTIMOD-FM DIGITAL OPERATION B1/B2 Xover (Band 1 to Band 2 Crossover Frequency) sets the crossover frequency between bands 1 and 2 to either 100 Hz or 200 Hz. It significantly affects the bass texture, and the best way to understand the differences between the two crossover frequencies is to listen.

  • Page 178: Audio Processing And The Multiplex Power Threshold Control

    3-54 OPERATION ORBAN MODEL 5500 standard. The control is located in the Setup > S screen because the regulation TEREO NCODER applies to all operation of the processor in a given installation. If your country enforces the standard, you should set the control to complement the amount of peak overshoot in the transmission system following your Optimod.

  • Page 179: Test Modes

    3-55 OPTIMOD-FM DIGITAL OPERATION control in the on-air preset until the MPX Power gain reduction meter on the 5500 indicates an average of 3 dB of gain reduction. Save the result as a User Preset. Do not reduce the drive level to the 5500 by turning down the driving Optimod’s output level control because this does not decrease distortion in the Optimod’s peak limiter, unlike turning down the M control.

  • Page 180: Getting The Bass Sound You Want

    ORBAN MODEL 5500 While this calibration may seem unintuitive, experience has shown that it greatly reduces calls to Orban customer service complaining that the frequency response of the transmission path is not flat when in fact the measurement in question was causing undetected clipping at high frequencies due to preemphasis.
  • Page 181 3-57 OPTIMOD-FM DIGITAL OPERATION allow the bass clipper threshold to be raised during speech, minimizing clipper- induced speech distortion. The threshold of the band 1 compressor also affects bass punch. We recommend that you carefully study the setting of this control (and the B con- TTACK trol) in the various 5500 factory presets before making your own adjustments, so...

  • Page 182: Using The 5500 Pc Remote Control Software

    Before running 5500 PC Remote, you must have installed the appropriate Windows communications services on your computer. By default, the installer installs a short- cut to 5500PC.exe on your desktop and in your Start Menu under Orban\Optimod 5500. 5500 PC Remote can control only one 5500 at a time, but it can readily switch be- tween several 5500s.

  • Page 183: To Set Up A New Connection

    3-59 OPTIMOD-FM DIGITAL OPERATION Before your PC can communicate with a given 5500, you must first set up a “connec- tion,” which is information that allows PC Remote to locate and communicate with the 5500. To set up a new connection: A) Launch 5500PC.exe.

  • Page 184: To Modify A Control Setting

    “Loading system files, please wait.” When run, the Orban PC Remote software installer makes copies of all 5500 fac- tory preset files on your local hard drive. The PC Remote software reads these files to speed up its initialization.

  • Page 185: To Save A User Preset You Have Created

    The encryption options prevent archived presets, system files, and auto- mation files from being restored if the user does not have the password used for the encryption. There is no “back door”— Orban cannot help you to decrypt a preset whose password is unknown.

  • Page 186: To Restore Archived Presets, System Files, And Automation Files

    If the preset, system file, or automation file was encrypted when it was originally saved, PC Remote will request the password under which it was encrypted. All User Presets are compatible with all 5500 software versions. If Orban adds new controls to a software version, the new software will assign a reasonable default value to any control missing in an old User Preset.

  • Page 187: To Modify Input /Output And System Setup

    3-63 OPTIMOD-FM DIGITAL OPERATION c) Click the button. ESTORE E) To restore a system file: a) Set the field to the System Setup file type (*.orb55setup). ILES b) Select the desired system file in the dialog box. c) Click the button.

  • Page 188: To Group Multiple 5500S

    Optimod 5500 PC Re- mote (usually \Program Files\Orban\Optimod 5500). The folder has the same name as the Alias name. Once you establish the initial connection to the 5500, all presets for that 5500 are automatically copied to the Alias folder;...

  • Page 189: Multiple Installations Of Optimod 5500 Pc Remote

    To prevent the installer from overwriting the old version, you must specify a different installation folder when you install the new version (for example, \Program Files\Orban\Optimod 5500v2). Each version of 5500 PC Remote will display all 5500 Aliases, even those pointing to 5500s with incompatible version numbers.

  • Page 190: To Import Archived 8300, 8400, 8500 And 8600 Presets Into Your 5500

    To Import Archived 8300, 8400, 8500 and 8600 Presets into Your 5500 The 5500 shares some signal processing technology with Orban’s Optimod-FM 8300, 8400, 8500 and 8600 . However, the 5500 has fewer features. Using 5500 PC Remote software, you can import into the 5500 any User Presets that you archived using the 8400, 8300, 8500 or 8600 PC Remote software.
  • Page 191 Unless they use the features noted below, 8400 “Low Latency” presets will import correctly into the 5500:  The 5500’s stereo enhancer offers only “Orban 222-style” enhancement. There- fore, the 5500 will always interpret the 8400 S parameter as set to 222. It...

  • Page 193: Section 4 Maintenance

    OPTIMOD-FM DIGITAL MAINTENANCE Section 4 Maintenance Routine Maintenance The 5500 OPTIMOD-FM Audio Processor uses highly stable analog and digital cir- cuitry throughout. Recommended routine maintenance is minimal. 1. Periodically check audio level and gain reduction meter readings. Become familiar with normal audio level meter readings, and with the normal performance of the G/R metering.

  • Page 194: Subassembly Removal And Replacement

    MAINTENANCE ORBAN MODEL 5500 Subassembly Removal and Replacement See page 6-27 for the Circuit Board Locator and Basic Interconnections diagram. 1. Removing the Top Cover: To access any internal board (including the display assembly), you must remove the top cover.
  • Page 195 OPTIMOD-FM DIGITAL MAINTENANCE B) Using a deep hex nut driver (preferred), a small crescent wrench, or a pair of slip-joint pliers (in an emergency), remove the nuts and lockwashers holding the four BNC connectors to the chassis. The Composite/SCA daughterboard can now be removed. 4.
  • Page 196 EMI that violates FCC and/or CE regulations. If the power supply fails, please contact Orban Customer Service (custserv@orban.com) to obtain an exact replacement.
  • Page 197 OPTIMOD-FM DIGITAL MAINTENANCE 9. Replacing the Composite/SCA Daughterboard Referring to step 3, follow the instructions in reverse. 10. Replacing the Front Panel Assembly: A) Set the front panel, face down, on a soft cloth to prevent scratches. B) Lightly reattach the bottom and top circuit boards by mating the four plugs and jacks.

  • Page 198: Field Audit Of Performance

    MAINTENANCE ORBAN MODEL 5500 Field Audit of Performance Required Equipment:  Ultra-low distortion sine-wave oscillator/THD analyzer/audio voltmeter With verified residual distortion below 0.01%. Audio Precision System One, or similar high-performance system. The NAB Broadcast and Audio System Test CD is an excellent source of test signals when used with a high-quality CD player.
  • Page 199 The power supply is a module. In case of any power supply failure, the entire supply must be replaced by an exact replacement (available from Orban Service). Attempts to repair the supply on a component level and/or to replace the supply with a non-approved supply may compromise your Optimod’s compliance with...
  • Page 200 MAINTENANCE ORBAN MODEL 5500 b) Navigate to Setup > I/O C > D . Set controls as in the table ALIB ALIB below: DI REF VU ................–15.0 dBFS R CH BAL ..................0.0 dB c) Navigate to Setup > I/O C >...
  • Page 201 OPTIMOD-FM DIGITAL MAINTENANCE b) Set the M to T C) Connect the audio voltmeter to the Left Analog Output. D) Adjust output trim VR301 to make the meter read +10.0 dBu. (0 dBu = 0.775V rms.) Verify a frequency reading of 400 Hz. E) Verify THD+N reading of <0.03% (<0.01% typical) using a 22 kHz low pass fil- ter in the distortion analyzer.
  • Page 202 4-10 MAINTENANCE ORBAN MODEL 5500 DSP, the D/A converter, and the analog output circuitry. H) Repeat steps (C) through (G) for the right channel. 5. Check distortion performance of Analog I/O. A) Verify 5500 software controls are set to their default settings. (Refer to page 4-7.)
  • Page 203 4-11 OPTIMOD-FM DIGITAL MAINTENANCE C) Navigate to Setup > I/O C > D ALIB ALIB D) Set the I to D NPUT IGITAL E) Connect the digital source generator to the AES3 Digital Input XLR connector of the 5500. F) Set the frequency of the digital source generator to 400 Hz and its output level to 18 dB below full scale.
  • Page 204 4-12 MAINTENANCE ORBAN MODEL 5500 An analog oscilloscope can be used for a more thorough test. Set the scope for X/Y operation (i.e., so that it generates Lissajous patterns). Connect the reference generator to one input and the 5500’s digital out- put to the other input.
  • Page 205 4-13 OPTIMOD-FM DIGITAL MAINTENANCE You will have to press the N button to access all of these parameters. E) Navigate to Setup > S TEREO NCODER F) Set the C control to make the stereo monitor read 100% total modu- lation.
  • Page 206 4-14 MAINTENANCE ORBAN MODEL 5500 tion executes when you activate the input. To program a GPI input, see Remote Control Interface Programming on page 2-42. B) You can test the RS-232 port for functionality by verifying that you can con- nect to a PC through a null modem cable.

  • Page 207: Section 5 Troubleshooting

    Particularly if you are using a long run of coaxial cable between the 5500 and the exciter, a ground loop may inject noise into the exciter’s composite input — espe- cially if the exciter’s input is unbalanced. The Orban CIT25 Composite Isolation Trans- former can almost always cure this problem.

  • Page 208: Unexpected Delay Between The Program Feed And The On-Air Signal

    Many commercial monitors have this problem, but most of these problem units can be modified to indicate peak levels accurately. Orban uses the Belar “Wizard” series of DSP-based monitors internally for testing, because these units do not have this difficulty.

  • Page 209: Audible Noise On Air

    OPTIMOD-FM DIGITAL TROUBLESHOOTING compromising the 5500’s noise level, we could eliminate a control that was frequently misadjusted. If you are using the 5500’s stereo enhancer (which most “pop music”-oriented pre- sets do), then this can exaggerate multipath distortion in high multipath environ- ments.

  • Page 210: Whistle On Air, Perhaps Only In Stereo Reception

    TROUBLESHOOTING ORBAN MODEL 5500 In this case, it is wise to use the Orban 8200ST Studio AGC to perform the AGC func- tion prior to the STL transmitter and to control the STL's peak modulation. This will optimize the signal-to-noise ratio of the entire transmission system. An uncom- pressed digital STL will perform much better than any analog STL.

  • Page 211: Shrill, Harsh Sound

    OPTIMOD-FM DIGITAL TROUBLESHOOTING must have symmetrical group delay around the carrier frequency. An incorrectly tuned transmitter can exhibit an asymmetrical passband that will greatly increase crosstalk into subcarriers. Amplitude modulation of the carrier that is synchronous with the program (“syn- chronous AM”) can cause program-related crosstalk into subcarriers.

  • Page 212: System Will Not Pass Line-Up Tones At 100% Modulation

    First, verify that a problem really exists by using a second frequency-measuring de- vice and/or verifying the problem with a monitoring service. If the problem is real, contact Orban Customer Service for a crystal replacement; there is no frequency trim available.

  • Page 213: Security Passcode Lost (When Unit Is Locked Out)

    OPTIMOD-FM DIGITAL TROUBLESHOOTING Section 1 of this manual provides a thorough discussion of system engineering con- siderations, particularly with regard to minimizing overshoot and noise. Security Passcode Lost (When Unit is Locked Out) Please see If You Have Forgotten Your Passcode on page 2-41. Connection Issues between the 5500 and a PC, Modem, or Net- work ...

  • Page 214: You Cannot Access The Internet After Making A Direct Or Modem Connection To The 5500

    TROUBLESHOOTING ORBAN MODEL 5500 A) Check to make sure that the cables are connected properly. B) Check that you are using a null modem cable. C) Ensure that the null modem cable is connected to the 5500’s serial connector. ...

  • Page 215: Os-Specific Troubleshooting Advice

    OPTIMOD-FM DIGITAL TROUBLESHOOTING OS-Specific Troubleshooting Advice Troubleshooting Windows 2000 Direct Connect: If you are having trouble establishing a connection, check your New Connection’s properties to make sure they are set up correctly: A) Click “Start > Programs > Accessories > Communications > Network and Dialup Connections”...

  • Page 216: Troubleshooting Windows 2000 Modem Connect

    5-10 TROUBLESHOOTING ORBAN MODEL 5500 you already set this speed when you configured your PC ports, you shouldn’t have this problem. The 5500 communicates at 115200 bps. COM ports on some older PCs are incapable of communications at this rate and may not work reliably.

  • Page 217: Troubleshooting Windows Xp Direct Connect

    5-11 OPTIMOD-FM DIGITAL TROUBLESHOOTING J) Set “Type of dial-up server I am calling” to “PPP: Windows 95/98/NT4/2000, Internet.” K) Select the “Settings” button and make sure all PPP settings are unchecked. Then click “OK.” L) In “Components checked are used by this connection,” uncheck all except for “Internet Protocol (TCP/IP).”...

  • Page 218: Troubleshooting Windows Xp Modem Connect

    5-12 TROUBLESHOOTING ORBAN MODEL 5500 H) In “This connection uses the following items,” select “Internet Protocol (TCP/IP)” and then click the “Properties” button. The “Internet Protocol (TCP/IP) Properties” window opens. I) Choose “Obtain an IP address automatically” and “Obtain DNS server address automatically”...

  • Page 219: Troubleshooting Ic Opamps

    Know the serial number of your 5500  this is printed on the rear panel of the unit. Please check Orban’s website, www.orban.com, for Frequently Asked Questions and other technical tips about 5500 that we may post from time to time. Manuals (in .pdf form) and 5500 software upgrades will be posted there too —...

  • Page 220: Factory Service

    Returned units will be returned C.O.D. if the unit is not under warranty. Orban will pay return shipping if the unit is still under warranty. In all cases, the customer pays transportation charges to the factory (which are usually quite nominal).

  • Page 221: Section 6 Technical Data

    OPTIMOD-FM DIGITAL TECHNICAL DATA Section 6 Technical Data Specifications It is impossible to characterize the listening quality of even the simplest limiter or compressor based on specifications, because such specifications cannot adequately describe the crucial dynamic processes that occur under program conditions. There- fore, the only way to evaluate the sound of an audio processor meaningfully is by subjective listening tests.

  • Page 222: Installation

    TECHNICAL DATA ORBAN MODEL 5500 Installation Analog Audio Input Configuration: Stereo. Impedance: >10k load impedance, electronically balanced Nominal Input Level: Software adjustable from –9.0 to +13.0 dBu (VU). Maximum Input Level: +27 dBu. Connectors: Two XLR-type, female, EMI-suppressed. Pin 1 chassis ground, Pins 2 (+) and 3 electronically balanced, floating and symmetrical.
  • Page 223 OPTIMOD-FM DIGITAL TECHNICAL DATA Digital Audio Output Configuration: Stereo per AES3 standard. Output configured in software as flat or pre- emphasized to the chosen processing pre-emphasis (50µs or 75µs), with or without J.17 pre-emphasis. Sample Rate: Internal free running at 32, 44.1, 48, 88.2 or 96 kHz, selected in software. Can also be synced to the AES3 digital input at 32, 44.1, 48, 88.2 or 96 kHz, as config- ured in software.
  • Page 224 TECHNICAL DATA ORBAN MODEL 5500 Subcarrier Protection (60-100 kHz): >= 70 dB (referenced to 100% modulation; with up to 2 dB composite limiting drive; measured with 800 line FFT analyzer using “maximum peak hold” display). 57 kHz (RDS/RBDS) Protection: 50 dB relative to 4% subcarrier injection, ±2.0 kHz (up to 2 dB composite processing drive).

  • Page 225: Circuit Description

    RFI/EMI: Tested according to Cenelec procedures. FCC Part 15 Class A device. Shipping Weight: 10 lbs / 4.6 kg Warranty Two Years, Parts and Service: Subject to the limitations set forth in Orban's Standard Warranty Agreement. Because engineering improvements are ongoing, specifications are subject to change with- out notice.

  • Page 226: Overview

    DSP code download has finished. If you hear a brief audio mute on air and you know that its input was not interrupted, you can assume that the 5500 has rebooted for some reason. Be prepared to convey this fact to Orban cus- tomer service if you call for technical assistance.

  • Page 227: User Control Interface And Lcd Display Circuits

    OPTIMOD-FM DIGITAL TECHNICAL DATA The control board contains interface circuitry, the CPU, the Ethernet interface chip, the flash memory, the DRAM, the RS-232 serial interface circuitry, the GPI/O interface circuitry, and the real-time clock, which keeps time for the 5500’s automation func- tions.

  • Page 228: Input Circuits

    TECHNICAL DATA ORBAN MODEL 5500 encoder entered commands, the AES status bits from the digital input signal, the RS-232, and the remote control interface status. The microprocessor updates the LED control status indicators accordingly. Component-Level Description: S1-S11 are the front panel pushbutton switches. CR11-CR15 are the front panel LED control status indicators.
  • Page 229 OPTIMOD-FM DIGITAL TECHNICAL DATA The digitally controlled gain circuitry was included on the circuit board for possible use in future products. In the 5500, its gain is preset so that the A/D will clip at +27 dBu with respect to the 5500’s analog inputs. Note that the small RFI “tee”...

  • Page 230: Output Circuits

    6-10 TECHNICAL DATA ORBAN MODEL 5500 4. Wordclock/10 MHz Sync Reference Input Located on input/output/DSP board The 5500’s internal system clock (which drives the DSPs) can be synchronized to a wordclock or 10 MHz reference applied to J502A. This allows the 19 kHz pilot tone in the 5500’s composite output to be frequency-synchronized to an accurate...
  • Page 231 6-11 OPTIMOD-FM DIGITAL TECHNICAL DATA right analog output connectors. These analog signals can represent either the transmitter or monitor output of audio processing. Component-Level Description: IC303 and associated components filter the left channel signal emerging from IC306. The purpose of these stages is to reduce the out-of-band noise energy resulting from the delta-sigma D/A’s noise-shaping filter and to translate the differential output of the D/A converter into single-ended form.

  • Page 232: Dsp Circuit

    6-12 TECHNICAL DATA ORBAN MODEL 5500 Component-Level Description: We will describe the signal path for composite 1 output; the signal path for composite 2 output is exactly analogous. IC401 is a dual-channel high-speed D/A converter chip that receives the digital composite signal at a 170.66 (512/3) kHz sample rate.

  • Page 233: Power Supply

    During system initialization, the SC520 queries the DSP hardware about its opera- tional status and will display an error message on-screen if the DSP fails to initialize normally. Please note any such messages and be ready to report them to Orban Cus- tomer Service.
  • Page 234 6-14 TECHNICAL DATA ORBAN MODEL 5500 CMOS complementary metal-oxide semiconductor COFDM Coded Orthogonal Frequency Division Multiplex — a robust type of digital modulation using many narrow-bandwidth, low data rate, mutually non-interfering carriers to achieve an ag- gregate high data rate with excellent multipath rejection.

  • Page 235: Parts List

    Consult the factory if the listing of a part includes the note “selected” or “realignment required.” Orban normally maintains an inventory of tested, exact replacement parts that can be supplied quickly at nominal cost. Standardized spare parts kits are also available.

  • Page 236: Control Board

    6-16 TECHNICAL DATA ORBAN MODEL 5500 Brief description of part Model, serial, and “M” (if any) number of unit  see rear-panel label To facilitate future maintenance, parts for this unit have been chosen from the cata- logs of well-known manufacturers whenever possible. Most of these manufacturers have extensive worldwide distribution and may be contacted through their web sites.
  • Page 237 6-17 OPTIMOD-FM DIGITAL TECHNICAL DATA Control Board PART # DESCRIPTION COMPONENT IDENTIFIER C159, C161, C175, C176, C178, C181, C183, (C201, NO, STUFF) 21322.547.01 CAPACITOR, 4.7uf, TANTALUM, 3528 21325.610.01 CAPACITOR 10UF 10% TANTALUM C13, C15, C16, C18, C35, C42, 3528 C44, C202 22101.001.01 DIODE, 1N4148WT/R CR1, CR2, CR3, CR4, CR5...

  • Page 238: Combined Input/Output And Dsp (I/O+Dsp) Board

    6-18 TECHNICAL DATA ORBAN MODEL 5500 Control Board PART # DESCRIPTION COMPONENT IDENTIFIER 27375.000.01.1 HEADER, 2MM 2 X 6 27479.002.01.1 CONNECTOR HEADER .156 CENTER 2 29535.000.01.1 INDUCTOR 3.9uH CHIP 1008 L1, L2, L3 29536.000.01.1 INDUCTOR SURFACE MOUNT 10uH 43050.014.01.1 SASY CBL IDC 60PIN 1.4"...
  • Page 239 6-19 OPTIMOD-FM DIGITAL TECHNICAL DATA I/O+DSP BOARD PART # DESCRIPTION COMPONENT IDENTIFIER 21137.447.01 CAPACITOR .47UF 25V 10% 1206 C215, C216, C319, C320, C428, C429 21325.610.01 CAPACITOR 10UF 10% TANTALUM C221, C222, C223, C224, C225, 3528 C401, C402, C403, C404, C405, C406, C1001, C1002, C1003, C1004, C1005, C1006, C1007, C1008, C1103, C1205, C1206,...
  • Page 240 6-20 TECHNICAL DATA ORBAN MODEL 5500 I/O+DSP BOARD PART # DESCRIPTION COMPONENT IDENTIFIER C1219, C1220, C1235, C1236, C1237, C1240, (C502, C504, C506, C508 NO-STUFF) 29015.000.01 TRANSFORMER SURFACE-MOUNT T501, T503, (T502, T504, NO, SCIENTIFIC CONVERSION STUFF) 20130.499.01 RESISTOR R0805 4.99K 1% 1/8W...
  • Page 241 6-21 OPTIMOD-FM DIGITAL TECHNICAL DATA I/O+DSP BOARD PART # DESCRIPTION COMPONENT IDENTIFIER 21171.105.01 CAPACITOR 1uf X7R 0805 C301, C302, C303, C511, C805, C806, C807, C808, C949, C950, C951, C952, C953, C954, C955, C956, C957, C958, C959, C960, C1009, C1101, C1102, C1209, C1210, C1211, C1212, C1213, C1214, C1234 21147.022.01...

  • Page 242: Composite/Sca Daughterboard

    6-22 TECHNICAL DATA ORBAN MODEL 5500 I/O+DSP BOARD PART # DESCRIPTION COMPONENT IDENTIFIER R312, R313, R314, R315, R316 20130.562.01 RESISTOR 1/8W 1% 5.62K 0805 R229, R230 20130.348.01 RESISTOR 1/8W 1% 3.48K 0805 R321, R322, R323, R324, R325, R326, R415, R416, R417, R418, R1215 20130.162.01...

  • Page 243: Display Board (Front)

    6-23 OPTIMOD-FM DIGITAL TECHNICAL DATA COMPOSITE/SCA DAUGHTERBOARD PART # DESCRIPTION COMPONENT IDENTIFIER 20128.075.01 RESISTOR 75 Ω 1% 0805 R11, R12 Display Board (Front) DISPLAY BOARD (FRONT) PART # DESCRIPTION COMPONENT IDENTIFIER 15057.010.01 SPACER, .100" HIGH CR1, CR2, CR3, CR4, CR5, CR6, CR7, CR8, CR9, CR16 15061.005.01 LED MNT, 1 POS'N, .240"HIGH...

  • Page 244: Drawings

    6-24 TECHNICAL DATA ORBAN MODEL 5500 Schematics and Parts Locator Drawings These drawings reflect the actual construction of your unit as accurately as possible. Any differences between the drawings and your unit are probably due to product improvements or production changes since the publication of this manual.
  • Page 245 6-25 OPTIMOD-FM DIGITAL TECHNICAL DATA Function Description Drawing Page Display Board Front-Panel LCD, LEDs, Buttons, Parts Locator 6-48 and Rotary Encoder Drawing Contains: Front of board Schematic 1 of 2 6-49 Rear of board 6-50 DSP Block Shows signal processing 6-51 Diagram...
  • Page 247 6-27 OPTIMOD-FM DIGITAL TECHNICAL DATA WARNING: INPUT/OUTPUT PARTS SECTION UNDER SHIELD ARE EXPOSED TO AC LINE CONTROL INPUT/OUTPUT+DSP BOARD BOARD POWER SUPPLY DSP SECTION DISPLAY ASSEMBLY...
  • Page 248 6-28 TECHNICAL DATA ORBAN MODEL 5500 CONTROL BOARD PARTS LOCATOR...
  • Page 249 6-29 OPTIMOD-FM DIGITAL TECHNICAL DATA C44 10UF +3.3V 10.0K 0.1UF SYSTEM_RESET-N (SHT 5) U5 MIC8115TU +3.3V U1B SC520 MR-n PIO14/GPIRQ9 RESET-n PWRGOOD PIO14/GPIRQ9 AC22 GP_RESET GPRESET PRGRESET PRGRESET MCP120-475I/TT 10.0K (SHT 5) 7x 4.75K DACK1-N PIO11/GPDACK1 AF10 DREQ1 PIO7/GPDRQ1 PIO16/GPIRQ7 PIO16/GPIRQ7 PIO17/GPIRQ6 PIO17/GPIRQ6...
  • Page 250 6-30 TECHNICAL DATA ORBAN MODEL 5500 MD[0..31] MA[0..12] U2A MT48LC16 U3A MT48LC16 U1A SC520 MA12 MA12 MD15 MA12 MD31 MA12 DQ15 DQ15 MA11 MA11 MD14 MA11 MD30 MA11 DQ14 DQ14 MD31 MA10 +3.3V MA10 MD13 MA10 MD29 MD31 MA10 A10/AP...
  • Page 251 6-31 OPTIMOD-FM DIGITAL TECHNICAL DATA +3.3V PCI_AD[0..31] RNET4.7K +3.3V U1C SC520 U10A DP83816AVNG +3.3V PCI_AD31 PCI_AD31 REQ4 AD31 AD31 PCI_AD30 PCI_AD30 REQ3 AD30 AD30 PCI_AD29 PCI_AD29 REQ2 AD29 AD29 PCI_AD28 PCI_AD28 REQ1 AD28 AD28 PCI_AD27 PCI_AD27 AD27 AD27 PCI_AD26 PCI_AD26 AD26 AD26 PCI_AD25...
  • Page 252 6-32 TECHNICAL DATA ORBAN MODEL 5500 PWRGOOD +3.3V (SHT2) +3.3V 100K 100K 100K 0 OHM U1D SC520 (NO-STUFF) 4.75K AF25 AC13 TRIG/TRACE TRIG/TRACE AF23 AD24 BR/TC BR/TC AE21 JTAG_TMS JTAG_TMS AE25 AF21 JTAG_TDI JTAG_TDI AE24 AD21 JTAG_TCK JTAG_TCK AD26 PIO31/RING2-N...
  • Page 253 6-33 OPTIMOD-FM DIGITAL TECHNICAL DATA +3.3V U10B DP83816AVNG +3.3V +3.3V (NO-STUFF) +3.3V U2B MT48LC16 U3B MT48LC16 U4B E28F128 C201 RESERVED 1.0UF RESERVED RESERVED +3.3V VCCQ VSSQ VDDQ VSSQ VDDQ VSSQ VDDQ VSSQ VDDQ VSSQ VDDQ VSSQ VDDQ VSSQ VDDQ VSSQ VDDQ AUXVDD AUXVDD...
  • Page 254 6-34 TECHNICAL DATA ORBAN MODEL 5500 5500 I/O BOARD: Parts Locator Drawing 32370.000.02.1 (sheet 1 of 1)
  • Page 255 6-35 OPTIMOD-FM DIGITAL TECHNICAL DATA IRQB- N DSP CONTROL INTERFACE I/O CONTROL INTERFACE 62370.000.02.1_Sheet07.SchDoc 62370.000.02.1_Sheet10.SchDoc IRQB- N DSP _RST- N EXTAL DSP _RST- N IRQB- N DSP _RST- N DSP _RST- N START START START SSI _DO MI SC_CS- N SSI _DO SSI _DO MI SC_CS- N...
  • Page 256 6-36 TECHNICAL DATA ORBAN MODEL 5500 R233 R245 J201 FEMALE L203 C201 3.65K 1.50K FILTER 47PF IC201A L201 0.1% R203 L207 R215 IND 1 K 5%,100V C205 E201 1200µH ????? 47PF 5%,100V 1000PF C207 OPA2134PA R241 C211 R207 R255 CR201...
  • Page 257 6-37 OPTIMOD-FM DIGITAL TECHNICAL DATA L307 +5VA J301 C303 L303 L301 MALE IND 1K FILTER R331 L311 R335 1.0UF AGND IC301 1200µH C302 C306 SHELL DRV134PA 1000PF R339 C323 C327 +15V 1.0UF 0.1UF C321 C305 R307 R311 R317 LEFT / 1 8.45K 82.5K ANALOG...
  • Page 258 6-38 TECHNICAL DATA ORBAN MODEL 5500 R407 R411 R415 COMPOSITE D/A CONVERTER 2.10K 2.10K 3.48K C423 R419 IC401 +5VA 22PF 82.5K MONO VCC2L C403 IC4 03A IC4 05A C408 10UF 0.1UF CHSL AGND3L AGND5 OP A2134UA OP A2134UA IOUTL- R425...
  • Page 259 6-39 OPTIMOD-FM DIGITAL TECHNICAL DATA 5500 I/O BOARD: Composite/SCA Daughter Board 62310.000.02.1 (sheet 4b)
  • Page 260 6-40 TECHNICAL DATA ORBAN MODEL 5500 IC503B IC503A REF_M CLK REF_M CLK REF_M CLK (SHT11) REF_MCLK RCKIB RCKIA IN_FCLK IN_FCLK OUT_FCLK (SHT11) IN_FCLK LRCKIB LRCKOB LRCKIA LRCKOA IN_BCLK OUT_BCLK BCKIB BCKOB BCKIA BCKOA IN_BCLK DIN1_DATA (SHT11) DOUT1_DATA (SHT11) IN_BCLK SDINB...
  • Page 261 6-41 OPTIMOD-FM DIGITAL TECHNICAL DATA (5500 NO-STUF F) (5500 NO-STUF F) IC601A IC602A IC603A IN_FCLK FSY NC FSY NC IN_FCLK FSR_0/PC1_0 FST_0/PC4_0 FSR_0/PC1_0 FST_0/PC4_0 FSR_0/PC1_0 FST_0/PC4_0 IN_BCLK BCLK BCLK IN_BCLK SCKR_0/PC0_0 SCKT_0/PC3_0 SCKR_0/PC0_0 SCKT_0/PC3_0 SCKR_0/PC0_0 SCKT_0/PC3_0 HCKR_0/PC2_0/SRCK HCKT_0/PC5_0/STCLK HCKR_0/PC2_0/SRCK HCKT_0/PC5_0/STCLK HCKR_0/PC2_0/SRCK HCKT_0/PC5_0/STCLK IC601_SDI0_0...
  • Page 262 6-42 TECHNICAL DATA ORBAN MODEL 5500 IC601B IC602B (5500 NO-STUFF) IC603B (5500 NO-STUFF) EXTAL EXTAL EXTAL EXTAL (SHT11) EXTAL EXTAL XTAL EXTAL XTAL EXTAL XTAL PINIT/NMI0 PINIT/NMI0 PINIT/NMI0 +3.3V +3.3V +3.3V DSP _RST- N DSP _RST- N DSP _RST- N...
  • Page 263 6-43 OPTIMOD-FM DIGITAL TECHNICAL DATA IC601C IC602C (5500 NO-STUFF) IC603C (5500 NO-STUFF) LAD0/PA0 LALE LAD0/PA0 LALE LAD0/PA0 LALE LAD1/PA1 LAD1/PA1 LAD1/PA1 LAD2/PA2 LCS0 LAD2/PA2 LCS0 LAD2/PA2 LCS0 LAD3/PA3 LCS1 LAD3/PA3 LCS1 LAD3/PA3 LCS1 LAD4/PA4 LCS2 LAD4/PA4 LCS2 LAD4/PA4 LCS2 LAD5/PA5 LCS3 LAD5/PA5 LCS3...
  • Page 264 6-44 TECHNICAL DATA ORBAN MODEL 5500 IC601D IC602D (5500 NO-STUF F) IC603D (5500 NO-STUF F) +3.3V +3.3V +3.3V C607 C608 C609 IO_GND IO_VDD IO_GND IO_VDD IO_GND IO_VDD 0.01UF 0.01UF 0.01UF IO_GND IO_VDD IO_GND IO_VDD IO_GND IO_VDD C619 C620 C621 IO_GND...
  • Page 265 6-45 OPTIMOD-FM DIGITAL TECHNICAL DATA +3.3V L1001 HZ0805G102R-10 +3.3V CR1001 C1019 IC501D IC SRC4382I PFB C1025 C1026 0.1UF DI MRB0530 +3.3V DGND IC1001 0.1UF 0.1UF IC501C R1001 2 OHM SCL/CCLK GPO1 A0/CS GPO2 R1007 0 OHM A1/CDIN GPO3 SDA/CDOUT GPO4 VDD33 SEL _L -N (SHT11)
  • Page 266 6-46 TECHNICAL DATA ORBAN MODEL 5500 IC1 103 RXCKO_1 IC606_SDO2_1 (SHT5) (SHT6) RXCKO_1 I0 (429) I0 (3) IC606_SDO2_1 RX_LRCK_1 IC606_SDO2_3 (SHT5) (SHT6) RX_LRCK_1 I0 (426) I0 (6) IC606_SDO2_3 RX_BCLK_1 IC605_SDO5_3 (SHT5) (SHT6) RX_BCLK_1 I0 (423) I0 (9) IC605_SDO5_3 DIN1_DATA IC605_SDO4_3...
  • Page 267 6-47 OPTIMOD-FM DIGITAL TECHNICAL DATA FROM POWER SUPPLY TO CONTROL PCA C1227 R1201 TP1205 (NO-STUFF) IC1201 2 OHM 0.01UF J1203 J1201 C1209 C1219 SS/TRCK +3.3V 1.0UF 0.1UF L 1201 C1239 C1240 TP1203 (NO-STUFF) PVIN C1235 10UF 0.1UF +3.3V R1203 2 OHM 1.5uH C1231 C1201...
  • Page 268 6-48 TECHNICAL DATA ORBAN MODEL 5500 FRONT VIEW REAR VIEW FRONT PANEL PARTS LOCATOR DIAGRAM...
  • Page 269 6-49 OPTIMOD-FM DIGITAL TECHNICAL DATA CR1A CR1B CR1C CR1D CR1E CR1F CR1G CR1H CR1I CR1J CR2A CR2B CR2C CR2D CR2E CR2F CR2G CR2H CR2I CR2J CR3A CR3B CR3C CR3D CR3E CR3F CR3G CR3H CR3I CR3J CR4A CR4B GNDF T O GND PLA NE ON LY GNDF GNDF RY10...
  • Page 270 6-50 TECHNICAL DATA ORBAN MODEL 5500 P4-1 and P4-2 provide GND to gnd plane on front bd. There is no other connection to GND on the front bd to the plane. IC7C IC7F 74HC14A 74HC14A IC7D RES_NET 74HC14A D[0..7] D[0..7]...
  • Page 271 6-51 OPTIMOD-FM DIGITAL TECHNICAL DATA...

Table of Contents