Owner manual

Key to Main Station: rear panel

Feature Description

Power supply with metal cable clip. The power supply operates at 100 - 240

VAC / 50-60Hz / 250 watts / T 3.15A H 250 V.

Control I/O (25 way female D-type). Use to connect up to 4 relay control

outputs and 4 optically isolated control inputs (see 4.5 Configuring the Control

I/O).

Function

Pin 1 Relay 1 NC Pin 14 Relay1 Pole

Pin 2 Relay 1-NO Pin 15 Relay 2 NC

Pin 3 Relay2-Pole Pin 16 Relay 2-NO

Pin 4 Relay 3 NC Pin 17 Relay3 Pole

Pin 5 Relay 3-NO Pin 18 Relay 4 NC

Pin 6 Relay4-Pole Pin 19 Relay 4-NO

Pin 7 Pin 20 +5V

Pin 8 GND Pin 21 +5V

Pin 9 GND Pin 22 Opto 1-

Pin 10 Opto 1+ Pin 23 Opto 2-

Pin 11 Opto 2+ Pin 24 Opto 3-

Pin 12 Opto 3+ Pin 25 Opto 4-

Pin 13

Opto 4+

Table 2-6: Control I/O pin out

Hot Mic output. This connection is a 1/4-in (0.64 cm) phone jack. It provides an

output signal from the selected headset or panel microphone. The Hot Mic

output is always live. Audio from the mic is routed through the Hot Mic output

even if the mic is inactive (off).

Function

Tip Mic

Ring IFB mute signal

Sleeve Ground

Table 2-7: Hot Mic pin out

HelixNet Partyline User Guide