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Wheatstone MP-532 Manual

Fm / fmhd+ /am / amhd+ / hd+ digital multi-processor
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FM / FMHD
Designed and manufactured in the USA by Wheatstone Corporation
Designed and manufactured in the USA by Wheatstone Corporation
1 |
P a g e
MP-532
FMHD+ /AM / AMHD+ / HD+
Digital Multi-Processor
Digital
Preliminary Guide
Preliminary Guide
FEBRUARY 2021
Revision Ø
Wheatstone Audio Processing
600 Industrial Drive, New Bern, North Carolina, USA 28562
600 Industrial Drive, New Bern, North Carolina, USA 28562
+1 (252) 638-7000

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Summary of Contents for Wheatstone MP-532

  • Page 1 FEBRUARY 2021 Revision Ø Wheatstone Audio Processing Designed and manufactured in the USA by Wheatstone Corporation Designed and manufactured in the USA by Wheatstone Corporation 600 Industrial Drive, New Bern, North Carolina, USA 28562 600 Industrial Drive, New Bern, North Carolina, USA 28562...
  • Page 2 P a g e...

  • Page 3: Special Note

    MP-532’s three different styles of final processing three different styles of final processing, if desired: FM pre-emphasis and distortion emphasis and distortion-cancelled clipping with FM stereo generator and RDS;...
  • Page 4 The column labeled FM shows the MPX output level from the stereo generator from the stereo generator when the MP when the MP-532 is in FM mode, and the positive modulation in percent when 532 is in FM mode, and the positive modulation in percent when in AM mode...
  • Page 5 MP which the MP-532 will be connected! will be connected! P a g e...
  • Page 6 Once there, turn the jog wheel to select the correct value, and so on. The same procedure is used to modify the remaining subnet mask and gateway addresses. Once finished, power cycle the MP-532 and after it boots up its network settings will be what was just entered.
  • Page 7 GUI to communicate with the MP the GUI to communicate with the MP-532 hardware. On the USB thumb drive along with this Quick Start Guide is the SB thumb drive along with this Quick Start Guide is the file for installing the GUI file for installing the GUI application.
  • Page 8 Next we will configure the GUI application to communicate with the MP located. Next we will configure the GUI application to communicate with the MP-532 hardware. 532 hardware. P a g e...
  • Page 9 To configure the GUI application to communicate with the MP To configure the GUI application to communicate with the MP-532 over a network, click on the 532 over a network, click on the Devices button circled in the image below.
  • Page 10 NOTE: It is unwise to use leading zeros in IP NOTE: It is unwise to use leading zeros in IP addresses!! Now that the new MP-532 device has been 532 device has been created, it must be ‘selected’ before the GUI created, it must be ‘selected’...
  • Page 11 Quick Start_FM. Also shown above is that the MP Also shown above is that the MP-532 is connected to an audio source and that it is operating in 532 is connected to an audio source and that it is operating in its FM Mode as indicated by the Processor Mode knob at lower right by the Processor Mode knob at lower right circled in red.
  • Page 12 And, finally, the metering metering for when the HD+ mode is selected. Each MP-532 operating mode’s metering will be described in turn, starting with FM. 532 operating mode’s metering will be described in turn, starting with FM. 532 operating mode’s metering will be described in turn, starting with FM.
  • Page 13 Normal operating levels should have the INPUT meters frequently peaking near -12dBFS but 12dBFS but never more than about -4dBFS on frequent occasions. 4dBFS on frequent occasions. Wheatstone’s audio level meters are udio level meters are calibrated in decibels Full Scale calibrated in decibels Full Scale digital which makes 0dBFS mean the digital domain is “out of...
  • Page 14 L/R – This meter shows the activity of the MP This meter shows the activity of the MP-532’s final FM clipper. A fair amount of activity nt of activity is normal for most program material...
  • Page 15 MP-532. A full scale setting of the Analog Output level control will result A full scale setting of the Analog Output level control will result in a +22dBu audio in a +22dBu audio level (balanced) at the rear panel XLR connectors into a bridging load.
  • Page 16 L/R – This meter shows the activity of the MP This meter shows the activity of the MP-532’s final AM clipper. A fair amount of activity is clipper. A fair amount of activity is...
  • Page 17 B feed the Left and Right meters, respectively, as well as the Left and Right analog outputs on the rear panel of the MP Right analog outputs on the rear panel of the MP-532. The analog outputs will commonly commonly be used to feed older AM transmitters AM transmitters lacking digital AES3 inputs.
  • Page 18 HD Mode Final and BS.1770 and BS.1770 Metering The HD+ mode-related Final related Final and BS.1770 meters are shown inside the dashed box in the above meters are shown inside the dashed box in the above image. Leveller – This meter indicates the amount of gain reduction occurring within the HD+ mode’s This meter indicates the amount of gain reduction occurring within the HD+ mode’s This meter indicates the amount of gain reduction occurring within the HD+ mode’s slow, gain-riding leveler which serves to even out levels applied later to the final lookahead...
  • Page 19 MP-532. A full scale setting of the Analog Output level control will result 532. A full scale setting of the Analog Output level control will result in a +22dBu audio in a +22dBu audio level (balanced) at the rear panel XLR connectors into a bridging load.
  • Page 20 MP analog, and the digital source fails, the MP-532 will switch the input over to the analog 532 will switch the input over to the analog source where it will remain unless or until the digital source returns.
  • Page 21 The Left/Right Mode allows the MP The Left/Right Mode allows the MP-532 to be driven with a stereo source (normal) or from o be driven with a stereo source (normal) or from a left only or right only input. When the left or right only choic a left only or right only input.
  • Page 22 The MP-532 has the ability to modify the settings in the Input screen of the GUI 532 has the ability to modify the settings in the Input screen of the GUI 532 has the ability to modify the settings in the Input screen of the GUI through the use of presets.
  • Page 23 Main GUI – EQ Screen There are four equalizer sections available in the main program signal flow, and functionally it is re are four equalizer sections available in the main program signal flow, and functionally it is re are four equalizer sections available in the main program signal flow, and functionally it is located prior to the multiband AGC which follows.
  • Page 24 Main GUI – AGC Screen iAGC, Compressor and Leveler In/Out and Leveler In/Out Across the upper left of the GUI’s AGC page are three Across the upper left of the GUI’s AGC page are three circles representing the Enable/Disable buttons for circles representing the Enable/Disable buttons for the iAGC, Compressor and Leveler Leveler.
  • Page 25 AGC Drive Sets the amount of ‘work’ that the multiband section does in the multiband section does in order to generate a consistent a consistent output level. Higher settings ‘push’ the AGC section harder level. Higher settings ‘push’ the AGC section harder while lower settings relax it.
  • Page 26 Band Coupling The Band Coupling controls set how much a set how much a band’s gain reduction can different from the adjacent band. Larger band’s gain reduction can different from the adjacent band. Larger numbers allow greater independence, while smaller number numbers allow greater independence, while smaller numbers cause the band gains to track more closely to each other.
  • Page 27 Main GUI – Limiter Screen imiter Screen The GUI’s Limiter Screen is shown above The GUI’s Limiter Screen is shown above, noting that it is similar in appearance to the AGC screen AGC screen, but with a different set of user controls. controls.
  • Page 28 The Main Clipper is also where many stations will exit this section of processing. The Main Clipper is also where many stations will go to add additional go to add additional competitive loudness. The MP-532’s Main Clipper is fairly 532’s Main Clipper is fairly forgiving, though as with...
  • Page 29 Multiband Limiter Graphical Area Multiband Limiter Graphical Area Like the Multiband AGC, the Like the Multiband AGC, the Multiband Limiter has its own Multiband Limiter has its own graphical screen, only here graphical screen, only here there is much less going on or to there is much less going on or to show.
  • Page 30 MAIN GUI – MPX and OUTPUT SCREEN UTPUT SCREEN After all FM left/right processing has been completed, the signal next moves to the stereo generator has been completed, the signal next moves to the stereo generator has been completed, the signal next moves to the stereo generator which then constructs the multiplex composite signal.
  • Page 31 BS412 Enable control is in the NO position. the BS412 Enable control is in the NO position. The MP-532 is equipped w 532 is equipped with two subcarrier inputs suitable for RDS ith two subcarrier inputs suitable for RDS, RBDS or other type other types of subcarriers.
  • Page 32 Emphasis control has no effect. The MP The MP-532 analog and digital outputs may be used for FM, AM or the 532 analog and digital outputs may be used for FM, AM or the HD+ Mode so there must be a way to assign those signals to the...
  • Page 33 MAIN GUI – RDS SCREEN SCREEN The MP-532 is equipped with a full 532 is equipped with a full-featured RDS/RBDS generator which may be set up for static messages featured RDS/RBDS generator which may be set up for static messages...
  • Page 34 SCREEN The MP-532 GUI’s SYSTEM page, especially when connected to the MP 532 GUI’s SYSTEM page, especially when connected to the MP-532 hardware, displays a lot of 532 hardware, displays a lot of useful information that can help with troubleshooting. For instance, on a tech support call we would want useful information that can help with troubleshooting.
  • Page 35 MP-532 Security Several methods have been provided Several methods have been provided on the MP-532 software GUI’s SYSTEM 532 software GUI’s SYSTEM page for ‘locking down’ the processor and /or its GUI software. for ‘locking down’ the processor and /or its GUI software.
  • Page 36 Headphone Source: The source feeding the headphones plugged into the MP The source feeding the headphones plugged into the MP-532 front panel headphone jack can be selected 532 front panel headphone jack can be selected with the Headphone Source selector. The available sources are: with the Headphone Source selector.
  • Page 37 The List button opens the dialog shown below showing the list of presetws currently loaded on the MP currently loaded on the MP-532 hardware. Taking a preset can be accomplished Taking a preset can be accomplished by double clicking on the preset...
  • Page 38 532 hardware. The Favorites folder in the right pane’s u The Favorites folder in the right pane’s upper portion is created when the MP-532 GUI is installed and it is 532 GUI is installed and it is a write protected folder – presets cannot be moved directly into that folder from the hardware.
  • Page 39 The MP-532 is equipped with a 532 is equipped with a automatic preset scheduler preset scheduler that can be set up to automagically change gically change presets on any specified date or presets on any specified date or time. The default schedule is Weekly,...

  • Page 40: Rds Functions

    The RDS standard is documented in IEC-62106 (2009). The North 62106 (2009). The North American variant, RBDS, is documented in NRSC American variant, RBDS, is documented in NRSC-4-B (2011). MP-532 is compliant with both standards. is compliant with both standards. Basic Settings...
  • Page 41 Static Settings As the name suggests, the Static As the name suggests, the Static Settings do not, as a general rule, Settings do not, as a general rule, change very often, so you might change very often, so you might think of them as “default settings”...
  • Page 42 Program ID (PI) is a crucial part of your station’s RDS messaging and you should take care to set it Program ID (PI) is a crucial part of your station’s RDS messaging and you should take care to set it Program ID (PI) is a crucial part of your station’s RDS messaging and you should take care to set it •...
  • Page 43 Address, it means “all sites.” In the Encoder Address, it means “all encoders.” In the DSN field, it means “current data set.” The PSN field is an exception: it “current data set.” The PSN field is an exception: it must be set to 0 or the MP-532 will ignore the will ignore the message.
  • Page 44 Transmit ODA message Plain Text Plain text messages received by the MP-532 may be routed to either PS (Program Service) or RT (Radio Text), depending on the Unit’s Format setting. These messages affect only the current data set, and neither value is saved (for example, if you switch to a different Data Set after receiving these message, then their values are lost).
  • Page 45 RDS Country Codes and Extended Country Codes European Broadcasting Area Country / Area ISO Code Country Code Extended CC Albania Algeria Andorra Armenia Austria Azerbaijan Azores [Portugal] Belgium Belarus Bosnia-Herzegovina Bulgaria Canaries [Spain] Croatia Cyprus Czech Republic Denmark Egypt Estonia Faroe Islands [Denmark] Finland France...
  • Page 46 Netherlands Norway Palestine Poland Portugal Romania Russian Federation San Marino Slovakia Slovenia Spain Sweden Switzerland Syrian Arab Republic Tajikistan Turkmenistan Tunisia Turkey Ukraine United Kingdom Uzbekistan Vatican (Yugoslavia) African Broadcasting Area Country / Area ISO Code Country Code Extended CC Ascension Island Cabinda Angola...
  • Page 47 Republic of Guinea Kenya Liberia Libya Lesotho Mauritius Madagascar Mali Mozambique Morocco Mauritania Malawi Niger Nigeria Namibia Rwanda Sao Tome & Principe Seychelles Senegal Sierra Leone Somalia South Africa Sudan Swaziland Togo Tunisia Tanzania Uganda Western Sahara Zaire Zambia Zanzibar Zimbabwe ITU Region 2 Country / Area...
  • Page 48 Costa Rica Cuba Dominica Dominican Republic Ecuador El Salvador Falkland Islands Greenland Grenada Guadeloupe Guatemala Guiana Guyana Haiti Honduras Jamaica Martinique Mexico Montserrat Netherlands Antilles Nicaragua Panama Paraguay Peru Puerto Rico Saint Kitts Saint Lucia St Pierre and Miquelon Saint Vincent Suriname Trinidad and Tobago Turks and Caicos Islands...
  • Page 49 Australia - Northern Territory Bangladesh Bahrain Myanmar [Burma] Brunei Darussalam Bhutan Cambodia China Sri Lanka Fiji Hong Kong India Indonesia Iran Iraq Japan Kiribati Korea [South] Korea [North] Kuwait Laos Macau Malaysia Maldives Micronesia Mongolia Nepal Nauru New Zealand Oman Pakistan Philippines Papua New Guinea...
  • Page 50 AM Mode Functions Entering the MP-532’s AM mode is accomplished by navigating AM mode is accomplished by navigating to the GUI’s SYSTEM screen and changing the Processor Mode to the GUI’s SYSTEM screen and changing the Processor Mode switch to the AM position.
  • Page 51 When Tilt Test is set to On, the MP When Tilt Test is set to On, the MP-532 creates a symmetrically clipped sine wave at 50% of the original 532 creates a symmetrically clipped sine wave at 50% of the original sine wave amplitude, 6dB lower in peak level than when Tilt Test is Off.
  • Page 52 AM Diversity Delay For AM/HD applications the MP-532 is equipped with up to ten seconds of delay for the analog side of the 532 is equipped with up to ten seconds of delay for the analog side of the 532 is equipped with up to ten seconds of delay for the analog side of the audio processing chain.
  • Page 53 INPUT to the HD+ processing can be from the unprocessed MP-532 input source, from the output of the multiband AGC, or from the output of 532 input source, from the output of the multiband AGC, or from the output of 532 input source, from the output of the multiband AGC, or from the output of the multiband limiter with “final”...
  • Page 54 : Should be in the On position used when the HD+ Signal chain is receiving its input from the MP : Should be in the On position used when the HD+ Signal chain is receiving its input from the MP-532...
  • Page 55 BS1770 dBLU: Selecting this choice causes the large digital meter to display the current medium term loudness value over the preceding ten seconds. Long Term Avg: Selecting this choice causes the large digital meter to display the Long Term Average (LTA) over the preceding 120 minutes.