Polycom MX392 manual Logic Output

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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:

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 the pin number under the Pin column:

Reversing the polarity is critical to proper operation. When S3 is in the ON position, the MX392 wants to see an Active Low signal (0V DC) from the Vortex Device in order to illuminate the LED. By default, the Vortex Device has been designed to assume that an Active High signal (+5V DC) is required to drive an LED. The MX392 uses the active low signal to use part of the phantom power voltage to illuminate the LED. If you do not reverse the polarity, the LED will light up exactly the opposite way you will have intended.

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Contents Application Note Polycom Installed Voice Business Group Using the Shure MX392 Push to Talk Microphone with Vortex DevicesTable of Contents SHURE MX392 BASICS Switch Behavior Page LOGIC PORT PHYSICAL CONNECTIONS AND GROUNDING LOGIC INPUT DEFAULT CONDITIONSTOGGLE OPERATION PUSH TO TALK If you are successful, you should see this on the screen Do not assign any command to the HELD COMMAND columnLOGIC OUTPUT Here is what the screen should look like when you are finished Page TOGGLE OPERATION PUSH TO MUTE If you are successful, you should see this on the screen Do not assign any command to the HELD COMMAND columnLOGIC OUTPUT Here is what the screen should look like when you are finished TOGGLE OPERATION MUTE ALL EXAMPLE Likewise, here is the Macros page for the Vortex EF2241 MACROSBROADAB01MUTEI11 BROADAF00MUTEI11Page LOGIC INPUT Do not assign any command to the HELD COMMAND column LOGIC OUTPUT Page MOMENTARY OPERATION PUSH TO TALK LOGIC INPUT Page LOGIC OUTPUT Here is what the screen should look like when you are finished MOMENTARY OPERATION PUSH TO MUTE LOGIC INPUT If you are successful, you should see this on the screen LOGIC OUTPUT Here is what the screen should look like when you are finished MOMENTARY OPERATION MUTE ALL EXAMPLE Likewise, here is the Macros page for the Vortex EF2241 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 command that is after the colon. For example, if a Macro in the Vortex EF2241 has this command Page LOGIC INPUT Page Page LOGIC OUTPUT 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 membrane switch, the LED will stay lit until the switch is pushed and held down Polycom Installed Voice Business Group Contact Information TECHNICAL SUPPORT