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— 16 — 

Section IV 

 USING THE WEB INTERFACE 

Internal  

Webserver 

The Inovonics 552 includes an internal Webserver that contains 

multiple  interactive  pages,  or  menus,  for  setup  and  operation  

of your unit.  These pages give ready and interactive access to 

all settings, readouts, graphics, audio monitoring and alarms. 

Now Playing 

is the landing, ‘home’ Webpage initially presented, 

as shown fully ‘unfurled’ here. 

 

 

 

Summary of Contents for Inovonics 552

Page 1: ...552 Modulation Monitor Installation User Guide www inovonicsbroadcast com ...

Page 2: ......

Page 3: ... Rev 1 0 1 4 Release w Manual Inovonics Inc 5805 Highway 9 Felton CA 95018 Tel 831 458 0552 Register online at www inovonicsbroadcast com PRODUCT REGISTRATION RECORD 552 Serial No ____________________ Purchase Date _____________________ Warranty Registered via Web Reg Date __________ By ____________ ...

Page 4: ...se from iBiquity Digital Corporation U S and Foreign Patents apply For patents see http patents dts com HD Radio and the HD HD Radio and ARC logos are registered trademarks of iBiquity Digital Corporation in the United States and or other countries ...

Page 5: ... Ground Loops 10 INPUTS OUTPUTS AND PORTS Antenna Input and Considerations 10 High Level Input 10 Multiplex or Pilot Sync Output 10 Program Line Outputs 10 Assignable Line Outputs 11 The Split Mode 11 Analog Line Output Characteristics 11 AES Digital Outputs 11 AoIP Streaming Port and Levels 11 LAN Network Port 12 GPOs 12 Section III PREPARING TO CONNECT THE 552 FRONT PANEL Front Panel vs Network ...

Page 6: ...ets 20 Important 21 Specifying the Four Selected HD Programs 21 RF Input Selection 21 Mono Stereo 21 STATION ROTATION StationRotation Defined 21 FM LEVEL METERING FM Carrier Modulation 22 Pilot and Subcarriers 23 Demodulated FM Audio 24 FM Program Loudness 24 ITU R BS 1770 Loudness Measurement 25 Synchronous and AM Noise 25 HD LEVEL METERING HD Levels and Loudness 26 Relative HD Program Loudness 2...

Page 7: ...tus 38 Set the Clock 38 Important 39 Overmod 39 Hysteresis Type Alarms 40 Low Signal Mute 40 RDS Alarms 40 RT Update 41 Threshold Independent Alarms 41 Pilot Loss 41 HD Loss 41 HD Program Loss 41 HD Power Level 41 FM HD1 Alignment 42 HD PSD Not Updated 42 HD Logo Not Received 42 HD Artist Experience 42 HD Image Issues 42 HD Emergency Alerts 43 Alarm Logging 43 SETUP Radio Settings 43 MPX Output 44...

Page 8: ...ante Controller 49 SNMP OPERATION Overview 49 Mode 49 Security 49 Ports 49 Trap Destinations 51 The MIB File 50 EMAIL Email and Text Notifications 50 SMTP Setup 50 Recipients Send To 50 Notifications Send What 51 TIME SETUP Time and DST 51 Presentation Formats 51 RTC Battery 52 Time Server 52 ADMINISTRATIVE MATTERS Security and Passwords 52 Signing In 52 Lost Password Hard Reset 53 The Hardware Pr...

Page 9: ...he 552 supports full SNMP remote control and monitoring Graphic Webpage display of all level metering FFT spectrum analysis of IF passband MPX baseband and program audio os cilloscope audio XY and ITU R BS 1770 LU loudness dis plays Collects and logs a history of FM and HD Radio signal parameters Precise analysis of timing and level errors between analog FM and HD1 digital program channels Simulta...

Page 10: ...15dBu to 15dBu in 0 1dB steps 200 source AES Digital XLR Adjustable from 30dBFS to 0dBFS in 0 1dB steps 44 1kHz sample rate 110 transform er coupled Dante AES67 Compatible RJ45 Output at 44 1kHz Dante only or 44 1kHz 48kHz Dante AES67 AoIP utility has independent IP Audio Format and Transmit Flow settings level adjustable from 30dBFS to 0dBFS in 0 1dB steps Headphone Jack TRS with adjustable liste...

Page 11: ...story FM HD1 Time Level Alignment History BandScanner utility Alarms Most alarms have multiple parameter set tings All alarms can send text or email notifications Alarms are also logged dai ly weekly monthly Analog FM Carrier Overmod Audio Loss Low Signal RDS Loss PI Error RT Update Pilot Loss HD Radio HD Loss Program Loss Audio Loss HD Power Level FM HD1 Alignment PSD Update Logo Re ceived Artist...

Page 12: ...st entirely DSP based Virtually all functionality is provided through firmware coding The Block Diagram presented below illustrates product basics in an easily under stood form although actual signal paths and logical functions may deviate appreciably from those depicted here Block Diagram of the Inovonics 552 HD Radio Modulation Monitor ...

Page 13: ...t or stolen gear and adds the user to a database to receive specific service instructions or soft ware firmware updates when issued Register online at www inovonicsbroadcast com support productRegistration NOTE Many users choose first to familiarize themselves with equipment on the bench or at their desk in which case they may immediately turn to Section III that describes setup and use of the 552...

Page 14: ...for safety Rack mounting the chassis normally satisfies this re quirement INPUTS OUTPUTS AND PORTS Antenna Input and Considerations The rear panel ANTENNA connector is a female 75 ohm F con nector While the F is a common standard in the US adapters to other connector types are readily available worldwide Many factors will guide your selection of an antenna not the least of which is the level and p...

Page 15: ...rminating load will drop the actual dBm level 2 5dB below the figure shown beside the associated adjusting slider An unbalanced output should be taken from the hot or side of any analog output and ground leaving the return or side of the output floating The unbalanced output level will be 6dB below the figure shown beside the slider Analog levels may be set to any figure between 15dBu and 15dBu co...

Page 16: ...Networking enables remote control full SNMP functionality and the HTTP UDP Web browser casual listening utility GPOs A removable screw terminal strip on the rear panel accesses ten GENERAL PURPOSE OUTPUTS GPO terminals for 552 alarm tallies GPOs are NPN transistors that saturate to ground and can sink up to 100mA at 40V max Alarm polarity active ground or active open is software programmable GPOs ...

Page 17: ...us to a power glitch are reload ed instantly from non volatile memory into the processing core Navigating the OLED Display The OLED display has an ad justable timeout feature with a factory default at the timer s 5 minute minimum The display either dims or turns off at the end of the timeout period Pressing or turning the knob will wake the display and reset the timer Above is a snapshot of the Ma...

Page 18: ...rollable from the front panel as noted in the Front Panel Menu Tree that follows Main Menu titles are underlined sub items listed are followed by a key r o means readout only other actions possible are indicated Now Playing Freq and HD Programs r o RSSI r o SNR r o DSQM r o Cd No r o HD Power r o Multipath r o Meters Total Mod r o Pilot r o RDS r o FM r o HD1 r o HDA r o HDB r o HDC r o Tuner RSSI...

Page 19: ...e various data entry boxes underneath As you then highlight each box an on screen keypad pops up permitting you to overwrite the default entries Once connected you may perform this operation using the Webpage interface as ex plained later Connecting Bringing up the Webpages user interface is as simple as enter ing the IP address of the 552 into your browser s address bar and clicking Enter Alterna...

Page 20: ...al Webserver that contains multiple interactive pages or menus for setup and operation of your unit These pages give ready and interactive access to all settings readouts graphics audio monitoring and alarms Now Playing is the landing home Webpage initially presented as shown fully unfurled here ...

Page 21: ...reset was dis played Once stations are entered clicking on the button will drop down the menu shown at the right and then clicking one of the presets will re tune to that station Entering presets is covered here shortly Remote Listening Click the loudspeaker icon at the top right of this or any other Webpage to listen to the off air audio program through your Web browser The button to the left of ...

Page 22: ...ings Pages in this category will be discussed sectionally Reception Status In Brief This top part of the Now Playing Webpage screen shows the most important incoming signal parameters The frequency and HD Radio short name are prominent above the matrix non HD stations will show only the frequency Note that each readout box contains a tiny scrolling graphic that displays the subject level over time...

Page 23: ... in per cent again based on ideal reception As just witnessed much of the HD Radio terminology has been coined by the system developers and may not be familiar within all broadcast engineering circles For an in depth discussion of the HD Radio system the reader is first directed to the relevant Wikipedia article here https en wikipedia org wiki HD_Radio Additionally a bibliography at the end of th...

Page 24: ...tion Presets The 552 offers thirty station memory presets Once tuned to a station click Save as New This will open a box where you can enter call letters or a short street name for the station Then click Save in that same box and your entry will be entered at the bottom of the Preset Stations list Presets are cleared from the list by clicking on the X at the right of the listing The Preset Station...

Page 25: ... INPUT The high level BNC input is generally used when a direct connection to the transmitter is preferred over off air signal reception On the Tuner Webpage menu Antenna or High Level may be se lected under RF Input This selection also becomes a part of the Preset Stations data allowing high level input selection for your own station and off air reception for others should you wish Mono Stereo La...

Page 26: ...tional alarm setup considerations when using the StationRotation feature 552 alarms generally have time on time off settings that will directly impact the Rotation Time Sec setting See the Alarms discussion beginning on Page 38 The on off times may be quite different between normal single station and StationRotation operation The Status display gives a second by second countdown of ro tation time ...

Page 27: ...ereo pilot On an FM station broadcasting in stereo Pilot should be a rock steady reading at about 9 0 Composite clipping or other nonlinearity in the transmission path can cause this reading to bounce to a lesser or greater ex tent these level perturbations showing up on the accompany ing AM bargraph as amplitude modulation of the stereo pilot Early FM stereo exciters generated the FM baseband sig...

Page 28: ... R stereo difference levels have the same ballistic characteristics and scaling as the Left and Right meters above them This dynamic sum and difference metering gives a better visual representation of stereo separation with program audio Note that in the example above Left and Right levels are less than a dB apart yet the L R and L R meters indi cate reasonable stereo activity The fact that Left a...

Page 29: ...e display represents the level range considered in this calculation and provides a quick visual of program dynamic range S The green segment is a short term integrated value de rived from a 3 second block of audio refreshed every second This yields a readout primarily indicating the loudest sections of program audio I The blue segment is a longer term integrated measure ment and is gated to ignore...

Page 30: ...ent e g HD2 HD3 etc If one or more of these displays has not been assigned an HD channel it will default to an HDA HDB or HDC callout and show no activity Relative HD Program Loudness Long term average loudness of the station s active HD Radio programs is shown on the HD Loudness Relative to FM display Zero LU on this meter scale represents the LU value of the host analog FM program Thus both the ...

Page 31: ...ewing car ries its own family of graph setup options below the display The IF Spectrum The illustration shown here is the receiver s IF spectrum 0kHz represents the carrier frequency of the currently tuned station The display has been Normalized under View Options to reference 0dB as the unmodulated FM carrier level HD Mask may be set at the figures shown the 20dBc choice in this case best delinea...

Page 32: ...e yields a sta ble and meaningful display and the de fault 10 FFT Averages proves a good compromise for a display that is both dynamic and easy to read Selecting Peak will reveal peak levels of the spectrum components and Hold accumulates the highest peak value for as long as it remains selected Audio Spectrum Display Select Audio at the top to present a spectral display of left and right program ...

Page 33: ...ou may select a window that shows up to the last 24 Hours Rolling your mouse over this screen drags a cursor over the plot the vertical white line just to the left of center in the ex ample here The numerical values directly below the plot show the multiple parameter levels at the cursor position or the cur rent incoming value when the cursor is not on the screen With Time Span set at an hour or m...

Page 34: ... audio lev els are shown here in a bi color display These are quasi peak read ings that will give an indication of program dynamics also The Show button se lects the program channel for display You may select analog FM audio or any of the HD Radio channels that accompany it The example station obviously needs a new processor About 12 seconds back modulation momentarily dropped to 10dB Integrated L...

Page 35: ...tion point and the horizontal timebase adjusts for the most meaningful display of the selected signal O Scope Applications The primary Oscilloscope function is to view actual signal wave forms View buttons allow selection between MPX the FM baseband signal the FM stereo Pilot the DSB RDS subcarrier and left and right au dio from the FM or any of the HD pro grams FM HD1 dis plays monaural audio fro...

Page 36: ...page shows the current time and level alignment information in brief Timing error is shown by the number of 44 1kHz samples Both Inst Alignment instantaneous and Avg Alignment averaged values are given You ll also find the Peak Level of the HD1 au dio program and the HD1 program audio Loudness with re spect to the loudness of the analog FM program The Status bar tells whether the HD1 is leading or...

Page 37: ... essentially tunes across the band and collects data from each station in the market Program audio outputs are muted and of course scanning will tem porarily interrupt all history studies 2 Once the display is presented clicking on a bar will imme diately tune the 552 to that station which you may or may not want to do Shown above is an entire FM band plot of the busy Los Angeles FM market Three S...

Page 38: ... a full RSSI RDS HD scan addition ally shows the HD stations as blue bars nearly always topped with red dots to indicate RDS in fo as well In the lower inset hovering over just the blue portion of the bar brings up Freq RSSI and Cd No digital signal quality stats Included are which HD Programs channels are being broadcast and the short HD station Name To get the RDS info for this station hover ove...

Page 39: ...se buttons that are pertinent to the station and pro grams you are monitoring The topmost display area is labeled FM The more important RDS fields that accompany the analog FM program are present ed here HD Radio PAD info and graphics are stacked below the FM RDS data Once a station is tuned the Listener Experience material will take a short while to load The remaining selectable display option at...

Page 40: ...o independent sources for assistance in for matting HD Radio images properly The Listener Experience dis play for other HD Radio chan nels this station carries will be presented in like manner Re member that any transmitted HD channel must be selected at the top of the page before it will be presented Additional Image Data Additional information on Listener Experience Image Data cur rently being r...

Page 41: ...ike its counterpart for RDS this Webpage presents a compre hensive display of the PAD Program Associated Data infor mation that accompanies HD Radio program channels SIS Station Information Service includes station identification and other data that each HD station must provide Even the transmit ter location is pinpointed with GPS coordinates you may even click on these to bring up a Google Maps i...

Page 42: ...ng graphic The tabulation assigns absolute values to Type Packet Size Segment and Time This tabulation rolls as well showing the same events as the timeline graphic In formation includes the times that images are received and cleared and verifies the repeat interval You may drill down through several minutes of this information that is useful in troubleshooting HD Radio image display problems ALAR...

Page 43: ...er of this section Following that the email SMS messag ing and rear panel GPO tallies may be programmed These pro cedures will be described in the Setup and Email Webpage dis cussions respectively NOTE Do please read the following discussions in their entire ty A setup explained for one alarm that is common or quite similar to the setup of others may not be explained in full de tail a second time ...

Page 44: ...dB meter shows the current pro gram audio level for this channel In this case we re looking for a low level audio condition so the Threshold On dB setting of 30 is what the program level has to drop to and stay below 30 for the Time On Sec interval of 30 seconds For the alarm to reset clear program audio must reach and remain above the Threshold Off dB figure of 15 for the Time Off period of 5 sec...

Page 45: ...t Loss HD Loss and HD Program Loss Pilot Loss This alarm indicates loss of the FM stereo pilot a rare transmit ter plant failure mode but still an included alarm There is no threshold setting just Time On sec and Time Off sec HD Loss This alarm flags the loss of general HD signal acquisition more indicative of an exporter importer exciter fault than a concur rent HD program audio loss alarm Other ...

Page 46: ... not updated in an expected nominal time Any or all HD programs may be activated to alarm when their respective Artist and or Title and or Album field s do not re ceive an update within the number of minutes specified in the Time On Min period Click on the HD channel button under any category to arm that function for this common alarm click again to deselect HD Logo Not Received The 552 can initia...

Page 47: ... Filter alarms with a search term from the appropriate column You may also download the Alarm Logs for Daily Weekly Monthly or Complete all alarms time periods The number of alarms re ceived for these time periods is also shown here Downloads are saved to your computer as small csv text files The Alarm Log will continue to accumulate entries indefinitely Clear it completely at any time by clicking...

Page 48: ...deliver either the FM baseband MPX signal or the 19kHz stereo Pilot tone as se lected here The Level VPP of the waveform may be adjusted between 1 and 6 volts peak to peak in 10mV increments Assignable Program Outputs The analog left right and AES digital assignable line outputs are independently programmed and adjusted for output levels here both in the same manner The choice in each case is audi...

Page 49: ... in transport This provides more data ready to go upon connection in turn helping the client s buffer to fill and playback to start faster Although the 552 can accommodate as many as 10 simultane ous Web listeners this number can be truncated in the interest of better streaming service to fewer authorized listeners Set the Max Listeners slider anywhere between 0 and 10 UDP Streaming The 552 can se...

Page 50: ...deliver ground on that terminal all the time and then go Active Open ungrounded when the alarm is re ceived The Status line in this example shows Output 1 is Inactive that is the assigned Audio Loss alarm has not been tripped Any of the alarm conditions could have been assigned here in the Type field Choose those that are most important to you and assign them to the GPOs NETWORK SETUP AND INTERNET...

Page 51: ... system you may access 552 Webpages on a common LAN by typ ing its Hostname and a forward slash into the browser address bar as shown here This entry is not case sensitive Non Windows browsers may require you to enter the complete IP address of the unit which you can always find by navigating to the front panel Network menu Incoming Internet Access To dial into the 552 from the Internet the unit m...

Page 52: ...rates this setting is discussed shortly The AES67 Standard specifies a 48kHz sample rate but 44 1kHz is a rate with wide use in radio and television broadcasting and is the default rate for the 552 With AES67 Enable set to Enabled streaming is forced to a 48kHz sample rate The AoIP MAC Address The MAC address for AoIP streaming is not the same as the one for general Web interactivity of the 552 th...

Page 53: ... to the SNMP Manager This is detailed later on Mode The SNMP submenu default Mode setting is Disabled which in hibits communication between the 552 and the SNMP Manager Changing Mode to Read Only allows the 552 to be interrogated by the SNMP Manager so that programmed setup parameters alarms etc can be integrated with other equipment on the net work Setting the Mode to Read Write allows the SNMP M...

Page 54: ...MTP Settings You need to set up an actual email account the elements of which are just like setting up any conventional email account Information to be entered here depends on the provider you choose When you apply for the account much of this information will be assigned to you Consult your IT pro fessional for setting up email accounts if you need to Under SMTP Server enter the provided outgoing...

Page 55: ...will receive a text message on his phone for Overmod and Low Signal alarms When you ve finished with this Recipient proceed to the next No Save command is necessary in this oper ation TIME SETUP Time and DST The onboard Real Time Clock updates from Internet Time daily and has suffi cient inherent pre cision to remain ac curate inside this schedule Grab and drag the Time Zone Hours slider for the p...

Page 56: ...ually from the front panel screen locally at the equipment site There are two Webpages access passwords Web Admin Password Read Write is the Administrator password that allows full ac cess to the 552 Web User Password Read Only allows the lower level user to view all data but those users cannot retune the re ceiver or make changes to any settings Once each pass word PIN has been assigned click Sav...

Page 57: ...a profile to your com puter under Configuration click Download Hardware Profile With the Firefox browser used in this example Windows first asks whether to Open or Save the file After clicking the Save button and OK Windows saves the file to the Windows Downloads folder From there you can move it to a location of your choice Other browsers may ask you directly to specify a Save as location The fil...

Page 58: ...he bottom of the Admin screen click Select Firmware File and double click the bin file listing This will transfer the file to the updater as shown in the next screenshot With the name of the new bin showing in File Click Update Firmware and follow prompts to complete the process Updating takes a minute or so and will return you to the new Web inter face pages once the operation is complete 552 Man...

Page 59: ...tion label has been removed or altered III TERMS OF WARRANTY Inovonics Inc products are warranted to be free from defects in materials and workmanship A Any discrepancies noted within THREE YEARS of the date of delivery will be repaired free of charge or will be replaced with a new or remanufactured product at Inovonics option B Parts and labor for factory repair required after the three year Warr...

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