Polycom SHURE MX392 user manual

User manual for the device Polycom SHURE MX392

Device: Polycom SHURE MX392
Category: Mouse
Manufacturer: Polycom
Size: 2.55 MB
Added : 8/6/2014
Number of pages: 44
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Abstracts of contents
Summary of the content on the page No. 1




Using the Shure® MX392 Push to Talk Microphone

with Vortex® Devices












Application Note

Polycom Installed Voice
Business Group

September 2004
Rev. B

Summary of the content on the page No. 2

Table of Contents TABLE OF CONTENTS......................................................................................................................... 2 SHURE MX392 BASICS....................................................................................................................... 3 Logic Port.......................................................................................................................................................................6 Physical Connect

Summary of the content on the page No. 3

® SHURE MX392 BASICS 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. The MX392 includes three extra conductors as part of the

Summary of the content on the page No. 4

Switch Behavior User Action Required / LED DIP Switch Settings Behavior Push to Mute, Release to Talk (As Press and hold switch to temporarily S1 = OFF mute microphone; release switch to Shipped) S2 = OFF unmute. S3 = OFF S4 = OFF LED on when microphone is active. Push to Talk, Release to Mute Press and hold switch to activate S1 = OFF microphone; release switch to mute. S2 = ON S3 = OFF LED on when microphone is active. S4 = ON Toggle: Push On/Push Off Press switc

Summary of the content on the page No. 5

Here is a drawing showing the functionality that is assigned to each DIP Switch: 5

Summary of the content on the page No. 6

LOGIC PORT 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. Pins 21- 25 are ground pins. Each pin can source up to 20 mA of current and each ground pin can sink up to 100 mA of current. 6

Summary of the content on the page No. 7

PHYSICAL CONNECTIONS AND GROUNDING 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. Next, connect the SWITCH OUT (white) conductor to one of the Logic Input pins 1-24 and then connect the LED IN (orange) conductor to one of the Logic Outpu

Summary of the content on the page No. 8

TOGGLE OPERATION (PUSH TO TALK) 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. Then, connect SWTICH OUT to one of the Logic Input pins 1-24. Connect LOGIC GND to Logic Output pins 21-25. Connect LED IN to on

Summary of the content on the page No. 9

Now, right click in the ACTIVATED COMMAND column for Logic Input 1 and select INSERT, INPUT, 1, MUTE, OFF. Now, whenever the switch goes Active Low (0V DC), the Vortex Device will unmute Input 1. Now, right click in the DEACTIVATED COMMAND column for Logic Input 1 and select INSERT, INPUT, 1, UTE, ON. Now, whenever the switch goes Active High (+ 5V DC), the Vortex Device will mute M Input 1. Do not assign any command to the HELD COMMAND column. If you are successful,

Summary of the content on the page No. 10

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. LOGIC OUTPUT 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 p

Summary of the content on the page No. 11

Next, right click in the ACTIVATED COMMAND column for Logic Input 1 and select INSERT, INPUT, 1, MUTE, OFF. Now, whenever the microphone is unmuted (Mute = False), the LED will illuminate on the MX392. Next, right click in the DEACTIVATED COMMAND column for Logic Input 1 and select INSERT, INPUT, 1, MUTE, ON. 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: 11

Summary of the content on the page No. 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. Now, the LED should not be illuminated since the input from the MX392 is now muted. Both LED's (Conference Composer and

Summary of the content on the page No. 13

TOGGLE OPERATION (PUSH TO MUTE) 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. First, set DIP Switch S1, S2, and S3 to ON and set S4 to OFF. Then, connect SWTICH OUT to one of the Logic Input pins 1-24. Connect LOGIC GN

Summary of the content on the page No. 14

Now, right click in the ACTIVATED COMMAND column for Logic Input 1 and select INSERT, INPUT, 1, MUTE, ON. Now, whenever the switch goes Active Low (0V DC), the Vortex Device will mute Input 1. Now, right click in the DEACTIVATED COMMAND column for Logic Input 1 and select INSERT, INPUT, 1, MUTE, OFF. Now, whenever the switch goes Active High (+ 5V DC), the Vortex Device will unmute Input 1. Do not assign any command to the HELD COMMAND column. If you are successful,

Summary of the content on the page No. 15

Repeat the above process for each MX392 microphone that you want to connect to the Vortex Device. LOGIC OUTPUT 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 t

Summary of the content on the page No. 16

Next, right click in the DEACTIVATED COMMAND column for Logic Input 1 and select INSERT, INPUT, 1, MUTE, ON. 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. 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

Summary of the content on the page No. 17

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: TOGGLE OPERATION MUTE ALL EXAMPLE Let's say that you have 2 Vortex units linked together via EFBus--1 EF2280 at Device ID 00 and 1 EF2241 at Device ID 01. When someone pushes the membrane switch on one microphone, you want tha

Summary of the content on the page No. 18

MACROS Go to the MACROS page of Conference Composer. To make things easy, label Macro 0 as MUTE ON 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. When you're done, this is what the Macros page should look like: Likewise, here is the Macros page for the Vortex EF2241: 18

Summary of the content on the page No. 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. The BROADA command broadcasts any command that is after the colon. For example, if a Macro in the Vortex EF2241 has this command: BROADA:F00MUTEI11 then when this Macro is e

Summary of the content on the page No. 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: 20


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