Shure P4800 User Manual
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Shure P4800 User Manual

Shure P4800 User Manual

Audio soundplex system processor using with amx / crestron systems
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See also: Installation Manual
Applications Group: (847) 600-8440
Fax: (847) 600-8444
_______________________________________________________________________________________
MICROPHONES AND ELECTRONIC COMPONENTS
Using the P4800 with AMX / Crestron Systems
Wiring
The P4800 uses a standard 7 wire RS-232 port for control. Crestron and AMX controllers use 5 wire RS-232. In order to
use a P4800 with Crestron or AMX, a custom cable will need to be built. The following diagram shows the cable. For a 5
volt supply, the resistor should be 1kohms.
All wires are straight through. The 9 pin connectors have numbers stamped on them. Follow those stamped numbers for
the pin out. Connect the RX, TX, GND, RTS, and CTS to the five wire RS-232 port on the control unit. The P4800 requires
a voltage of 5 to 12 volts on the DTR line. This voltage tells the microprocessor to accept any data that it receives on the
TX line.
Computer Interface – RS232 Pinout
Specifications
Baud:
19200
Data bits:
8
Stop bits:
1
Parity:
none
Flow control:
none
Page 1
Shure Inc.
5800 Touhy Ave
Niles, IL 60714 USA
6/15/04 RW

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  • Page 1 The P4800 uses a standard 7 wire RS-232 port for control. Crestron and AMX controllers use 5 wire RS-232. In order to use a P4800 with Crestron or AMX, a custom cable will need to be built. The following diagram shows the cable. For a 5 volt supply, the resistor should be 1kohms.

  • Page 2: Table Of Contents

    Volume Control – Mixpoint ............................11 Volume Control – Mixer Output ........................... 12 Activate Mixpoint (route an input to an output)......................13 QUERYING THE P4800 TO FIND OUT ITS SETTINGS....................14 Inputs – Query Settings..............................14 Mute ................................... 14 Polarity ..................................14 +4/-10 scaling ................................

  • Page 3: Changing Presets

    The format to change presets is as follows: C n h pp h Where n is the device ID set via the DIP switches on the P4800 unit (0 to 15), and pp is the preset number minus one. pp has a range from 0 to 127.

  • Page 4: Change Settings On P4800

    Note: <Device ID> is a hexadecimal number ranging from 00h to 0Fh. This number should match the DIP switch setting on the back of the P4800. Once a command is sent, the P4800 will echo the command and then send a return string to acknowledge the change.

  • Page 5: 4/-10 Scaling

    +4/-10 scaling Toggle Input 1: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 00h 0Ch 00h F7h Input 2: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 00h 0Dh 00h F7h Input 3: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 00h 0Eh 00h F7h Input 4: F0h 00h 01h 00h <Device ID>...

  • Page 6: Outputs - Change Settings

    Outputs – Change Settings Mute Toggle mute Output 1: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 46h 00h F7h Output 2: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 47h 00h F7h Output 3: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 48h 00h F7h Output 4: F0h 00h 01h 00h <Device ID>...

  • Page 7: 4/-10 Scaling

    Force polarity (+) Output 1: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 4Eh 00h F7h Output 2: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 4Fh 00h F7h Output 3: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 50h 00h F7h Output 4: F0h 00h 01h 00h <Device ID>...

  • Page 8: Output Pad (-20 Db)

    Output Pad (-20 dB) Toggle pad Output 1: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 5Eh 00h F7h Output 2: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 5Fh 00h F7h Output 3: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 60h 00h F7h Output 4: F0h 00h 01h 00h <Device ID>...
  • Page 9 Increase/Decrease volume by a relative amount Output 1: F0h 00h 01h 00h <Device ID> 0Ah 69h 04h 03h 3Eh <VA> F7h Output 2: F0h 00h 01h 00h <Device ID> 0Ah 69h 04h 03h 3Fh <VA> F7h Output 3: F0h 00h 01h 00h <Device ID> 0Ah 69h 04h 03h 40h <VA> F7h Output 4: F0h 00h 01h 00h <Device ID>...

  • Page 10: Matrix Mixer - Change Settings

    Matrix Mixer – Change Settings The matrix mixer signal processor in the P4800 unit has 4 inputs and N outputs (NOUTPUTS). When there is no cross over processor or splitter in the preset, N is 8, i.e. a 4 x 8 mixer. If there is a cross over or splitter, N is reduced by the number of cross over/splitter channels minus one.

  • Page 11: Polarity - Mixpoint

    Force Unmute F0h 00h 01h 00h <Device ID> 0Ah 69h 01h <IDMSB> <IDLSB> 00h F7h Polarity – Mixpoint Note: <ID> = (2 * NMIXPOINTS) + 15 + (Mix Point #) Toggle Polarity F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 00h <ID> 00h F7h Force Polarity (+) F0h 00h 01h 00h <Device ID>...

  • Page 12: Volume Control - Mixer Output

    The valid range for “Control Setting” is (0) to (127) from the following table. Control Setting <VA> Gain value (dB) -Infinity 1-26 -105 to –42.5, in 2.5 dB steps 27-127 -40.0 to +10.0, in 0.5 dB steps Increase/Decrease volume by a relative amount F0h 00h 01h 00h <Device ID>...

  • Page 13: Activate Mixpoint (Route An Input To An Output)

    Activate Mixpoint (route an input to an output) Note: The <IDMSB> and <IDLSB> values must be calculated as follows: <IDMSB> = [((3 * NMIXPOINTS) + 15 + (Mix Point #)) >> 7] & 7Fh <IDLSB> = ((3 * NMIXPOINTS) + 15 + (Mix Point #)) & 7Fh where “>>...

  • Page 14: Querying The P4800 To Find Out Its Settings

    The following list of commands can be sent to the P4800 to query the status of its settings. After the query command is sent, the P4800 will first send an echo of the query command and then it will send a return string with the status of the particular setting.

  • Page 15: Volume Setting

    Volume setting Note: <VA> equals an integer from –60 to +60. Divide <VA> by 2 to get to a dB scale. Input 1: Query command: F0h 00h 01h 00h <Device ID> 0Ah 70h 00h 00h F7h Return string: F0h 00h 01h 00h <Device ID + 10h> 0Ah 00h 00h 00h <VA> 00h F7h Input 2: Query command: F0h 00h 01h 00h <Device ID>...

  • Page 16: Outputs - Query Settings

    Outputs – Query Settings Mute Note: <VA> equals 00h when the output is unmuted and equals 7Fh when the output is muted. Output 1: Query command: F0h 00h 01h 00h <Device ID> 0Ah 70h 03h 46h F7h Return string: F0h 00h 01h 00h <Device ID + 10h> 0Ah 00h 03h 46h <VA> 00h F7h Output 2: Query command: F0h 00h 01h 00h <Device ID>...

  • Page 17: Output Pad (-20 Db)

    Output 5: Query command: F0h 00h 01h 00h <Device ID> 0Ah 70h 03h 5Ah F7h Return string: F0h 00h 01h 00h <Device ID + 10h> 0Ah 00h 03h 5Ah <VA> 00h F7h Output 6: Query command: F0h 00h 01h 00h <Device ID> 0Ah 70h 03h 5Bh F7h Return string: F0h 00h 01h 00h <Device ID + 10h>...

  • Page 18: Matrix Mixer - Query Settings

    Matrix Mixer – Query Settings Mute – Mixpoint Note: <VA> equals 00h when the mixpoint is unmuted and equals 7Fh when the mixpoint is muted. <ID> = NMIXPOINTS + 15 + (Mix Point #) Query command: F0h 00h 01h 00h <Device ID> 0Ah 70h 00h <ID> F7h Return string: F0h 00h 01h 00h <Device ID + 10h>...

  • Page 19: Volume Control - Mixpoint

    Volume Control – Mixpoint Note: <ID> = (Mix Point #) + 15 <VA> equals the settings in the following table. <VA> Gain value (dB) -Infinity 1-26 -105 to –42.5, in 2.5 dB steps 27-127 -40.0 to +10.0, in 0.5 dB steps Query command: F0h 00h 01h 00h <Device ID>...

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