Clear-Com HLI-FBS - Manual (Page 15)

Key to Main Station: rear panel
Feature Description
A
Power supply with metal cable clip. The power supply operates at 100 - 240
VAC / 50-60Hz /
250 watts / T 3.15A H 250 V.
B
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).
Pin Function Pin 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
C
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).
Pin Function
Tip Mic
Ring IFB mute signal
Sleeve Ground
Table 2-7: Hot Mic pin out
15 HelixNet Partyline User Guide