Polycom SR12, C12, C16, C8 manual Logic Outputs

Hardware Installation Guide for the Polycom SoundStructure C16, C12, C8, And SR12

Chapter 4 Logic Examples provides an example of how to use the analog gain input pin.

SoundStructure Logic Input

5V

Analog

Voltage

Value

Logic Pin 1 (+5V)

Analog Gain Input Pin

Logic Pin 25 (Ground)

Logic Outputs

All logic outputs are configured as open-collector circuits and may be used with external voltage sources. The maximum voltage that should be used with the logic outputs is 60 V with a maximum current of 500 mA.

SoundStructure Logic Output

Logic

Controller

Logic Output Pin

Chassis

Ground

The open collector design is shown in the following figure and works as a switch as follows: when the logic output pin is set high (on), the transistor will turn on and the signal connected to the logic output pin will be grounded and current will flow from the logic output pin to chassis ground.

2 - 18