Related Manuals for Polycom SHURE MX392
Summary of Contents for Polycom SHURE MX392
- Page 1 Application Note Polycom Installed Voice Business Group September 2004 Rev. B Using the Shure® MX392 Push to Talk Microphone with Vortex® Devices...
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Page 2: Table Of Contents
Table of Contents TABLE OF CONTENTS... 2 SHURE MX392 BASICS... 3 Logic Port...6 Physical Connections and Grounding...7 TOGGLE OPERATION (PUSH TO TALK) ... 8 Default Conditions...8 Logic Input ...8 Logic Output ...10 TOGGLE OPERATION (PUSH TO MUTE) ... 13 Default Conditions...13 Logic Input ...13... -
Page 3: Shure Mx392 Basics
MX392 B HURE The Shure MX392 is a surface-mount, electret microphone that includes a programmable membrane on/off switch that can be controlled externally via logic input / output terminals. This application note explores how to connect the MX392 to a Vortex device (EF2280, EF2241, EF2201, EF2210, or EF2211) as well as how to program the Vortex device and MX392 to achieve the desired control over the membrane switch. - Page 4 Switch Behavior Push to Mute, Release to Talk (As Shipped) Push to Talk, Release to Mute Toggle: Push On/Push Off Microphone Always Active (switch available for logic functions only) Automatic Mixer Mode (MX392 Models only) User Action Required / LED Behavior Press and hold switch to temporarily mute microphone;...
- Page 5 Here is a drawing showing the functionality that is assigned to each DIP Switch:...
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Page 6: Logic Port
OGIC The Logic Input port is a female DB-25 connector where pins 1-24 can be programmed to execute commands via the Logic Input page. Pin 25 is the ground pin and it can sink up to 500 mA of current. The Logic Output port is a female DB-25 connector where pins 1-20 can be programmed. -
Page 7: Physical Connections And Grounding
HYSICAL ONNECTIONS AND ROUNDING In order to connect the microphone to the Vortex Device, first connect the audio portion of the microphone to the Vortex Device: Connect the Positive conductor (Red) to the Positive terminal, the Negative conductor (Black) to the Negative terminal, and the Ground wire (gray) to the Ground terminal. -
Page 8: Toggle Operation (Push To Talk)
OGGLE PERATION Let's say that you want MX392 to be muted by default. If someone pushes the membrane switch, you want the microphone to stay unmuted until the user presses the switch to mute the microphone. You also want the LED to illuminate when the microphone is unmuted. First, set DIP Switch S1, S2, and S3 to ON and set S4 to OFF. - Page 9 Now, right click in the A CTIVATED . Now, whenever the switch goes Active Low (0V DC), the Vortex Device will unmute Input 1. Now, right click in the D EACTIVATED . Now, whenever the switch goes Active High (+ 5V DC), the Vortex Device will mute Input 1.
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Page 10: Logic Output
Make sure that the physical wiring works by pressing the membrane switch. You should see the LED above the pin assignment lit in green: Repeat the above process for each MX392 microphone that you want to connect to the Vortex Device. - Page 11 Next, right click in the A CTIVATED . Now, whenever the microphone is unmuted (Mute = False), the LED will illuminate on the MX392. Next, right click in the D EACTIVATED . Now, whenever the microphone is muted (Mute = True), the LED will not illuminate on the MX392.
- Page 12 Make sure the LED works as designed. If you press the membrane switch, you should see the LED above the pin illuminate in Conference Composer as well as on the MX392. Since the switch is a toggle switch, the LED will stay lit until the switch is pushed again: When the membrane switch is pushed again, the Vortex Device toggles the state from unmuted to muted.
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Page 13: Toggle Operation (Push To Mute)
OGGLE PERATION Let's say that you want MX392 to be unmuted by default. If someone pushes the membrane switch, you want the microphone to stay muted until the user presses the switch to unmute the microphone. You also want the LED to illuminate when the microphone is unmuted and not illuminate when the microphone is muted. - Page 14 Now, right click in the A CTIVATED . Now, whenever the switch goes Active Low (0V DC), the Vortex Device will mute Input 1. Now, right click in the D EACTIVATED . Now, whenever the switch goes Active High (+ 5V DC), the Vortex Device will unmute Input 1.
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Page 15: Logic Output
Repeat the above process for each MX392 microphone that you want to connect to the Vortex Device. OGIC UTPUT Go to the Logic Output page of Conference Composer. If the LED IN wire is connected to Logic Output pin 1, then you need to assign Pin 1 by left-clicking the desired pin in the DB-25 graphic. The pin will turn color from gray to pink. - Page 16 Next, right click in the D column for Logic Input 1 and select I , 1, EACTIVATED OMMAND NSERT NPUT . Now, whenever the microphone is muted (Mute = True), the LED will not illuminate on the MX392. Here is what the screen should look like when you are finished: Make sure the LED works as designed.
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Page 17: Toggle Operation Mute All Example
When the membrane switch is pushed again, the EF Device toggles the state from unmuted to muted. Now, the LED should not be illuminated since the input from the MX392 is now muted. Both LED's (Conference Composer and MX392) should not be illuminated: OGGLE PERATION Let's say that you have 2 Vortex units linked together via EFBus--1 EF2280 at Device ID 00 and 1... -
Page 18: Macros
ACROS Go to the M page of Conference Composer. To make things easy, label Macro 0 as MUTE ON ACROS and label Macro 1 as MUTE OFF. Then, for each microphone that is physically connected to the Vortex, add commands to Macro 0 that mute the microphones and add commands to Macro 1 that unmute the microphones. - Page 19 In order for one microphone to mute all microphones, we need to be able to mute and unmute the microphones on all units regardless of whether a microphone is muted from the Vortex EF2280 or the EF2241. To accomplish this, we will use the BROADA command to send MUTEI commands from one unit to the other unit.
- Page 20 Repeat that same process for Inputs 2-4 of the Vortex EF2241. The, perform the same procedure to unmute Inputs 1-4 on the Vortex EF2241. Remember that there is a colon after the BROADA command. When you are finished, here is what the Macros page should look like:...
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Page 21: Logic Input
Follow the same procedure for muting the Inputs 1-8 on the Vortex EF2280 from the EF2241. Here is what the Macros page for the Vortex EF2241 should look like when you are finished: OGIC NPUT Go to the Logic Input page of Conference Composer. If the SWITCH OUT wire is connected to Logic Input pin 1, then you need to assign Pin 1 by left-clicking the desired pin in the DB-25 graphic and selecting the pink color (The pink color means that the pin is not grouped to other pins). - Page 22 Now, place the cursor in the A CTIVATED 0 ("MUTE ON"). Now, whenever the switch goes Active Low (0V DC), the Vortex Device will execute Macro 0. Now, right click in the D EACTIVATED "(MUTE OFF"). Now, whenever the switch goes Active High (+ 5V DC), the Vortex Device will execute Macro 1.
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Page 23: Logic Output
Repeat the process for each microphone that is connected to the Logic Input port. If you are successful, you should see this on the screen (the screenshot is from a Vortex EF2241): Make sure that the physical wiring works by pressing the membrane switch. You should see the LED above the pin assignment lit in green: OGIC UTPUT... - Page 24 Next, right click in the A CTIVATED . Now, whenever the microphone is unmuted (Mute = False), the LED will illuminate on the MX392. Next, right click in the D EACTIVATED . Now, whenever the microphone is muted (Mute = True), the LED will not illuminate on the MX392.
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Page 25: Momentary Operation (Push To Talk)
Make sure the LED works as designed. If you press the membrane switch, you should see the LED above the pins illuminate in Conference Composer as well as on every MX392. Since the switch is a toggle switch, the LED will stay lit until the switch is pushed again: When the membrane switch is pushed again, the EF Device toggles the state from unmuted to muted. -
Page 26: Logic Input
OGIC NPUT Go to the Logic Input page of Conference Composer. If the SWITCH OUT wire is connected to Logic Input pin 1, then you need to assign Pin 1 by left-clicking the desired pin in the DB-25 graphic and selecting the pink color (The pink color means that the pin is not grouped to other pins). - Page 27 Now, right click in the H column for Logic Input 1 and select I , 1, M OMMAND NSERT NPUT . Now, whenever the switch goes Active Low (0V DC), the Vortex Device will unmute Input 1. If you are successful, you should see this on the screen: Make sure that the physical wiring works by pressing and holding the membrane switch.
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Page 28: Logic Output
OGIC UTPUT Go to the Logic Output page of Conference Composer. If the LED IN wire is connected to Logic Output pin 1, then you need to assign Pin 1 by left-clicking the desired pin in the DB-25 graphic. The pin will turn color from gray to pink. Next, right-click on the pin and reverse the polarity. A horizontal bar should appear under the pin number in the DB-25 graphic and under the pin number under the Pin column: Reversing the polarity is critical to proper operation. - Page 29 Next, right click in the D column for Logic Input 1 and select I , 1, EACTIVATED OMMAND NSERT NPUT . Now, whenever the microphone is muted (Mute = True), the LED will not illuminate on the MX392. Here is what the screen should look like when you are finished: Make sure the LED works as designed.
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Page 30: Momentary Operation (Push To Mute)
When the membrane switch is pushed again, the EF Device toggles the state from unmuted to muted. Now, the LED should not be illuminated since the input from the MX392 is now muted. Both LED's (Conference Composer and MX392) should not be illuminated: OMENTARY PERATION USH TO... -
Page 31: Logic Input
OGIC NPUT Go to the Logic Input page of Conference Composer. If the SWITCH OUT wire is connected to Logic Input pin 1, then you need to assign Pin 1 by left-clicking the desired pin in the DB-25 graphic and selecting the pink color (The pink color means that the pin is not grouped to other pins). - Page 32 Now, right click in the H column for Logic Input 1 and select I , 1, M OMMAND NSERT NPUT . Now, as long as the switch is Active Low (0V DC), the Vortex Device will mute Input 1. If you are successful, you should see this on the screen: Make sure that the physical wiring works by pressing and holding the membrane switch.
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Page 33: Logic Output
OGIC UTPUT Go to the Logic Output page of Conference Composer. If the LED IN wire is connected to Logic Output pin 1, then you need to assign Pin 1 by left-clicking the desired pin in the DB-25 graphic. The pin will turn color from gray to pink. Next, right-click on the pin and reverse the polarity. A horizontal bar should appear under the pin number in the DB-25 graphic and under the pin number under the Pin column: Reversing the polarity is critical to proper operation. - Page 34 Next, right click in the D column for Logic Input 1 and select I , 1, EACTIVATED OMMAND NSERT NPUT . Now, whenever the microphone is muted (Mute = True), the LED will not illuminate on the MX392. Here is what the screen should look like when you are finished: Make sure the LED works as designed.
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Page 35: Momentary Operation Mute All Example
When the membrane switch is pushed again, the Vortex Device toggles the state from unmuted to muted. Now, the LED should not be illuminated since the input from the MX392 is now muted. Both LED's (Conference Composer and MX392) should not be illuminated: OMENTARY PERATION t's say that you have 2 Vortex units linked together via EFBus--1 Vortex EF2280 at Device ID 00... - Page 36 o to the M page of Conference Composer. To make things easy, label Macro 0 as MUTE ON ACROS d label M acro 1 as MUTE OFF. Then, for each microphone that is physically connected to the Vortex, add commands to Macro 0 that mute the microphones and add commands to Macro 1 that unmute the microphones.
- Page 37 microphones on all units regardless of whether a microphone is muted from the Vortex EF2280 or the Vortex EF2241. To accomplish this, we will use the BROADA command to send MUTEI commands from one unit to the other unit. The BROADA command broadcasts any comman is after the colon.
- Page 38 Follow the same procedure for muting the Inputs 1-8 on the Vortex EF2280 from the EF2241. Here is what the Macros page for the Vortex EF2241 should look like when you are finished:...
- Page 39 OGIC NPUT Go to the Logic Input page of Conference Composer. If the SWITCH OUT wire is connected to Logic Input pin 1, then you need to assign Pin 1 by left-clicking the desired pin in the DB-25 graphic and selecting the pink color (The pink color means that the pin is not grouped to other pins).
- Page 40 Now, place the cursor in the A column for Logic Input 1 and select I CTIVATED OMMAND NSERT ACRO 0 ("MUTE ON"). Now, whenever the switch goes Active Low (0V DC), the Vortex Device will execute Macro 0. Now, right click in the D column for Logic Input 1 and select I EACTIVATED OMMAND...
- Page 41 Now, right click in the H column for Logic Input 1 and select I , 0 "(MUTE OMMAND NSERT ACRO ON"). Now, as long as the switch is held down, the Vortex Device will execute Macro 0. Repeat the process for each microphone that is connected to the Logic Input port. If you are successful, you should see this on the screen (the screenshot is from a Vortex EF2241): Make sure that the physical wiring works by pressing the membrane switch.
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Page 42: Logic Output
OGIC UTPUT Go to the Logic Output page of Conference Composer. If the LED IN wire is connected to Logic Output pin 1, then you need to assign Pin 1 by left-clicking the desired pin in the DB-25 graphic. The pin will turn color from gray to pink. Next, right-click on the pin and reverse the polarity. A horizontal bar should appear under the pin number in the DB-25 graphic and under the pin number under the Pin column: Reversing the polarity is critical to proper operation. - Page 43 Next, right click in the D column for Logic Input 1 and select I , 1, EACTIVATED OMMAND NSERT NPUT . Now, whenever the microphone is muted (Mute = True), the LED will not illuminate on the MX392. Here is what the screen should look like when you are finished (assuming a Vortex EF2241): Make sure the LED works as designed.
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Page 44: Technical Support
Polycom, the Polycom logo and Vortex are registered trademarks and Conference Composer is a trademark of Polycom, Inc. in the USA and various countries. The name Shure® is a registered trademark of Shure Incorporated. All other brand names, product names, and trademarks are the...