Logic Inputs; Analog Gain Input - Polycom SoundStructure C16 Hardware Installation Manual

Hardware Installation Guide for the Polycom SoundStructure
Remote Control 2
Pin Signal
1 +5 V
2 Logic Output 12
3 Logic Output 13
4 Logic Output 14
5 Logic Output 15
6 Logic Output 16
7 Logic Output 17
8 Logic Output 18
9 Logic Output 19
10 Logic Output 20
11 Logic Output 21
12 Logic Output 22
13 Analog Gain 2

Logic Inputs

All digital logic inputs (logic inputs 1 - 22) operate as contact closures and may either be connected to
ground (closed) or not connected to ground (open). The logic input circuitry is shown in the following figure.
Chapter 4 Logic Examples provides examples of how to use the logic input pins.
Logic Input Circuitry
SoundStructure Logic Input
Logic
Status

Analog Gain Input

The analog gain inputs (analog gain 1 and 2) operate by measuring an analog voltage between the analog
input pin and the ground pin. The maximum input voltage level should not exceed +6 V. It is recommended
that the +5 V supply on Pin 1 be used as the upper voltage limit.
Polycom, Inc.
Pin Signal
14 Logic Input 12
15 Logic Input 13
16 Logic Input 14
17 Logic Input 15
18 Logic Input 16
19 Logic Input 17
20 Logic Input 18
21 Logic Input 19
22 Logic Input 20
23 Logic Input 21
24 Logic Input 22
25 Ground
3.3V
Logic Input Pin
Logic Pin 25 (Ground)
25