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Table of Contents
Related Manuals for Inovonics 552
Summary of Contents for Inovonics 552
- Page 4 HD Radio Technology is manufactured under license 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.
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Page 5: Table Of Contents
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 Operation ............13 Powering-Up .................... 13 Navigating the OLED Display ..............13 Screen Settings (A Setup Example) ............ - Page 6 BRINGING UP THE WEBPAGE SERVER Network Considerations ................. 15 Finding the 552 IP Address ..............15 Connecting ....................15 Section IV – USING THE WEB INTERFACE Internal Webserver .................. 16 The Menu List ..................16 ‘Responsive’ Webpages ................. 16 THE WEBPAGE HEADER Monitor ID ....................
- Page 7 FM AND HD1 ALIGNMENT Specs at-a-Glance ................... 32 Alignment Time Studies ................. 32 THE BANDSCANNER™ UTILITY Warnings! ....................33 Start Scanning..................34 Bars and Dots..................34 THE LISTENER EXPERIENCE Definition ....................35 Display Options ..................35 Image Error Reporting ................36 Additional Image Data ................
- Page 8 IP Setup ....................48 Assigning a Hostname ................48 HTTP Port ....................48 MAC Address ..................48 Link Speed....................48 Addressing the 552 ................. 48 Incoming Internet Access ............... 48 ® DANTE AND AoIP STREAMING IP Settings Mode ..................49 AES67 Enable ..................
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Page 9: Section I - Introduction
Section I INTRODUCTION 552 PRODUCT DESCRIPTION The Inovonics 552 HD Radio Modulation Monitor gives the FM Introduction radio broadcaster access to extensive signal parameter data, for both the analog-FM host transmission and all accompanying HD Radio® digital channels. The all-digital 552 combines detailed DSP signal analysis with Webpage-based access for remote operation, measurements, graphical data and audio monitoring. -
Page 10: Specifications
552 TECHNICAL SPECIFICATIONS Program Audio Outputs: PLEASE NOTE: All specifications noted here Balanced Analog: (XLR) Left and Right are actual, real-world measurements, not outputs adjustable from –15dBu to optimistic allusions to theoretical ideals. +15dBu in 0.1dB steps; 200 source. Measurements should be repeatable when AES Digital: (XLR) Adjustable from using appropriate test equipment. - Page 11 Bargraph & Numerical Level Metering: Real-Time Clock: Analog FM: Carrier Modulation • Stereo Auto-sets to Internet time; auto/manual Pilot & Subcarriers • Demodulated L/R DST setting; battery backup. & L+R/L-R • Stereo Separation • Stereo Power Requirement: Crosstalk • BS.1770 Loudness • Syn- 88-264V , 15W.
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Page 12: Block Diagram
BLOCK DIAGRAM The 552 incorporates a Software-Defined Radio (SDR) receiver and similar elements in its design that make the product almost 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. -
Page 13: Section Ii - Installation
GENERAL This section of the manual addresses the physical installation of the 552 at its operating location, the ‘nuts and bolts’ of con- necting the unit. This section also references pages where per- tinent setup options and adjustments are discussed. -
Page 14: Ac Mains Power
Considerations Factors guiding your selection of an antenna will include the level and purity of the off-air signal. Selectivity of the 552 is remarkably good, but as a wideband receiver you may need a band-pass or band-stop filter for certain situations where the 552 and high power transmitters are co-located. -
Page 15: Assignable' Line Outputs
, HD and HD program chan- nels. This port is independent of the 552 LAN PORT network connection and its ‘casual streaming’ utility. Dante/AoIP streaming first requires basic Dante setup under the Webpage Dante menu as detailed on Page 49. Output levels are adjusted on the Setup / Audio Outputs / Dedicated Outputs / Dan- te/AoIP Webpage. -
Page 16: Lan Network Port
The RJ45 LAN PORT connects the 552 to a Local Area Network LAN Network (LAN) or the Internet. Network setup is under the Webpage or Port OLED Network menu as detailed later in the appropriate section. Networking enables remote control, full SNMP functionality, and the HTTP/UDP Web-browser ‘casual listening’... -
Page 17: Section Iii - Preparing To Connect
OLED display and knob, although this offers a very limited range of readouts and adjustments. Your purchasing choice of a 552 insinuates a preference for using the built-in Webserver interface for everyday interaction between the 552 and your choice of any networked computer, tablet or mobile device with a Web browser. - Page 18 Discussions that follow assume use of Webpages screens for setup and operation of your 552. A few of the features are at least partially controllable from the front panel as noted in the Front Panel Menu Tree that follows.
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Page 19: Bringing Up The Webpage Server
552 by your router appears in the first box. DHCP should work for you at least initially, but if your 552 needs a static IP address, select the DHCP box and turn it off. This will unlock the various data-entry boxes underneath. -
Page 20: Section Iv - Using The Web Interface
These pages give ready and interactive access to all settings, readouts, graphics, audio monitoring and alarms. The 552 Web interface opens to the Now Playing page. A list of The Menu List all the Webpage menus can be found at the left edge of any page. -
Page 21: Other Stream-Listening Options
Other Stream- nel outside the engineering staff without giving away viewing Listening or adjusting access to 552 Webpages. You will need to open a Options router port to use this IP-address method, but then one simply ‘points’ the computer or player (e.g.: VLC Media Player) at the desired audio stream as shown in the example that follows. -
Page 22: The Alarm Panel
these parameters, along with others not in this grid, are dis- played graphically in much greater detail and with selectable time scaling on the History Plots Webpage. Readouts in the top row give, in order: RSSI, the incoming FM carrier strength in dB (relative to 1 microvolt at the antenna in- put);... -
Page 23: Tuning The 552
Tuning the 552 This snapshot shows the Tuner subsection of the Now Playing Webpage. In this example the 552 is tuned to Los Angeles sta- tion KWAV at 94.7MHz, which carries HD1, HD2 and HD3 pro- grams as indicated in in orange in the header at the top. -
Page 24: Important
Now Playing Webpage and click the Save Changes bar to permanently associ- ate your changes with that preset. The 552 is able to decode any of the eight possible HD Radio Specifying the programs, but can process only four programs simultaneously. -
Page 25: Fm Level Metering
Next the Rotation Time (Sec): is programmed, and this takes some planning. When the 552 tunes to an HD Radio program, it takes about eight seconds to acquire, buffer and begin delivering the pro- gram audio. This is not a consideration for analog FM broad-... -
Page 26: Fm Carrier Modulation
38kHz carrier component. Today’s stereo-gens don’t need this, yet the 552 gives a readout of 38kHz energy. You shouldn’t see much action on the 38k bar, yet music heavy — 22 —... -
Page 27: Demodulated Fm Audio
in sub-bass may cause this readout to flicker-on occasionally. A steady-state reading or a great deal of bass-associated activity hints at a stereo-gen problem. The RDS readout gives the injection level of the RadioData sub- carrier at 57kHz. Similar to the stereo pilot, this should be a solid reading at about 5%. -
Page 28: Fm Program Loudness
552 Monitor. The bargraph shown above is for FM loudness measurement, but typical of all ‘LU’ (Loudness Unit) readings. The 552 incorporates a program loudness measurement utility ITU-R BS.1770 based on (human) ‘perceived loudness’ per the ITU-R BS.1770 Loudness Standard. -
Page 29: Synchronous And Am Noise
Synchronous and AM Noise Sync, or ‘synchronous’ FM noise, generally refers to amplitude modulation of the FM carrier by the FM baseband signal, pri- marily by the program audio source. If the passband of the transmitter is not frequency-flat, then as the carrier deviates toward the channel frequency extremes the carrier level under- goes amplitude rolloff at the band edges. -
Page 30: Spectrum Plots
SPECTRUM PLOTS The 552 monitor includes an advanced, high-resolution FFT- based spectrum analyzer that delivers detailed and annotated graphic displays of selected signals. Images are under the Spec- trum Plots Webpages menu. -
Page 31: The If Spectrum
The IF Spectrum The illustration above is the receiver’s IF spectrum. 0kHz repre- sents 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;... -
Page 32: The Fm Baseband Spectrum
MPX display. HISTORY PLOTS The 552 offers plots of nearly all reception and audio parame- ters viewable over the past minute, or may be selected to show up to a full, 24-hour time-study. — 28 —... -
Page 33: History Screen Basics
History Screen Basics This Modulation screen is typical of 552 history-display plots. The buttons at the top choose the specific measurement. Note the Show: buttons below the screen. When all buttons are activated, by default as pictured, all four parameters are dis- played in various colors. -
Page 34: Rf Metrics
We could hope that RF Metrics the RF Metrics History Webpage would be the least interesting of the bunch as these are re- ception metrics that ought to be rock-solid. This station is not one of the strongest in the area, showing some... -
Page 35: Oscilloscope
graph follow the loudness of the HD programs, but the ‘zero’ on the LU scale is continually adjusted to the current FM audio loudness. The Absolute selection will show the FM program to- gether with the HDs, but against absolute-LU values OSCILLOSCOPE A built-in oscilloscope utility has been included for viewing au- dio and other waveforms. -
Page 36: Fm And Hd1 Alignment
The 552 and most digital ‘scopes can optional- ly show either Lines or Points. The Points option presents a more artistic ‘constellation’ as seen in the example. In the ex- ample, Points and Persistence were both engaged to also indicate the short-term trend of the stereo image. -
Page 37: The Bandscanner™ Utility
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. -
Page 38: Start Scanning
(and is detailed shortly), which requires a time-consuming double-scan of the band. Once the display is presented the 552 returns to how it was set and what it was doing before the scan was initiated. As an added convenience, you can click on any bar shown in the win- dow to immediately tune the 552 to that station. -
Page 39: The Listener Experience
These are listed in ascending frequency order along with their PI, Callsign, RDS PTY and RSSI values. Click on any station’s frequency to immediately tune the 552 to that sta- tion and be taken to the Now Playing Webpage. Below the RDS Stations: list you’ll find a separate HD Stations: list- ing. -
Page 40: Image Error Reporting
These specs define the received image file. 552 diagnostics alert you to an image that does not meet the Image Error HD Radio spec. These are images that may not display proper- Reporting ly on some radio faceplates. -
Page 41: Additional Image Data
Programs heading on the HD Info Webpage. RDS AND HD METADATA This 552 Webpage presents a comprehensive display of the RDS Info RDS information that can accompany analog-FM transmissions. The upper area of the screen shows the most important blocks of RDS data. - Page 42 ter location is pinpointed with GPS coordinates; you may even click-on these to bring up a Google Maps image of the transmit- ter site. Miscellaneous includes additional station specifics on coding and transmission, as well as showing the particulars on any Emer- gency Alert that is being transmitted at the moment.
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Page 43: Alarm Status
Alarms are logged with time and duration stamps. Be sure to Set the Clock! select the time zone and ensure that the 552 is sync’d with In- ternet time. This is explained shortly. When an alarm or multiple alarms have been set with a station... -
Page 44: Overmod
GPO terminal, nor will the 552 send SMS/text or email alerts to station per- sonnel or log the alarm. This applies to all alarms. Mod (%): displays the total modulation level of the off-air pro- gram being received. -
Page 45: Low Signal Mute
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 seconds. This same logic applies to the other alarms in this ‘hysteresis’... -
Page 46: Rds Radiotext Not Updated
This is not a nit-picking comparison; rather, it’s a safeguard against transmitting a false time and really upsetting listeners. Of course you’ll want to verify that your 552 is indeed set to, and in-sync with, Internet time before using this function. -
Page 47: Hd Power Out Of Range
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. The 552 can initiate an alarm when the station logo image is HD Logo not received or updated in timely fashion. This alarm is other-... -
Page 48: Hd Artist Experience Not Updated
Artist Experience graphics instead of the sta- Experience tion Logos. Not Updated As explained on Page 36, the 552 has built-in diagnostics to in- HD Image dicate that Logo and Artist Experience graphics may not meet Issues the HD Radio image specification. -
Page 49: Setup
Complete log of all alarms first to be on the safe side. SETUP 552 setup is actually accomplished by entries on a number of the Webpages. Items specific to the Setup page will be dis- cussed in order here. -
Page 50: Dante/Aoip Streams
The 552 offers HTTP/Icecast Streams for general ‘tune-in’ lis- Other tening and as independent UDP streams that allow the 552 to Streaming Options send raw compressed audio to a specific IP address and port. -
Page 51: General Purpose Outputs
The rear-panel General Purpose Outputs (GPOs) serve as ‘tallies’ General Purpose for up to ten 552 signal and program fault alarms. Outputs Each output is numbered in accordance with the numbers above the barrier strip on the rear panel. The alarm associated with each connection is listed as well, along with whether or not that alarm has been set to active on the Alarms Webpage. -
Page 52: Network Setup And Internet Access
DHCP range. This should be an easy matter with the aid of the router’s Help utility. You also need to open a specific port for the 552 on the net- work router. Within the router’s Port Forwarding utility you... -
Page 53: Dante ® And Aoip Streaming
It is generally also compatible with proprietary systems from independent manufacturers of AoIP-enabled equipment. The Dante-based AoIP utility of the 552 is quite similar to the IP Settings product’s general networking function. Like the LAN connec-... -
Page 54: Link Speed
PCM 24 regardless of this setting. Sample Rate: is forced to 48kHz for AES67 streaming, but 44.1kHz is the 552 default rate unless AES Enable: has been set to Enable. The AoIP utility can specify multiple destinations for the audio Transmit Flows stream. -
Page 55: Security
SNMP operations. Overtype these defaults to change them as required and do a Save. When the 552 initiates an alarm, rather than being queried or Trap polled for one, that alarm is known as a ‘trap.’ Three local net-... -
Page 56: Recipients (Send To)
From: is the ‘friendly’ name that identifies the 552 to the email or SMS/text recipient. You could use station call letters or something like ModMonAlarm. User: is the full email address (username) of the email account you’re using for the 552, and Password: the password you choose for this account. -
Page 57: Time And Dst
The Real Time Clock has a backup battery located on the main RTC Battery 552 circuit board. This is a 3V CR2032 flat ‘coincell’ battery with the + side facing up. Replace the battery when RTC Battery: does not show Good. -
Page 58: Signing In
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. -
Page 59: Reboot
Configuration area. A manual reboot does not change any settings or purge any da- ta that would not be lost with a power cycle. The 552 will come back tuned to the same station and with all settings intact. -
Page 60: 552 Manual
Web inter- face pages once the operation is complete. A PDF of the 552 manual has been included in the firmware. 552 Manual The bottom of the Admin screen shows the Serial Number: of your ‘About’... -
Page 61: Inovonics Warranty
INOVONICS WARRANTY TERMS OF SALE: Inovonics products are sold with an understand- ing of “full satisfaction”; that is, full credit or refund will be issued for products sold as new if returned to the point of purchase within 30 days following their receipt, provided that they are returned complete and in an “as received”...