Sigtronics RES-400 - Manual (Page 3)

WIRING INSTRUCTIONS
Connections should be made as shown in Figure 3 and as indicated
in Table 1.
*1. White/red (pilot push-to-talk) must correspond with white/black
(pilot mike input) as shown.
*2. The blue wire from Pin 3 must be connected to the aircraft radio
headphone output — NOT the speaker output.
*3. Connect all mike jack grounds to Point A as shown in Figure 3.
(Use black washers supplied to insulate the mike jacks from aircraft
chassis ground.)
*4. Do NOT connect transmit switches to white (key) wire.
*5 Red wire may be connected to either 12 (1 4V) or 24 (28V)
power source.
*6. Tan wires from Pins 8 and 9 are only used on 4-way
installations.
PIN
#J2 WIRE
COLOR
FUNCTION CONNECT TO
7 Red *5
12V or 24 VDC
Power Input
Intercom Circuit Breaker
8 Tan *6
Rear Mike Input
(either Side) Ring Terminal of Rear
Intercom Mike Jack
9 Tan *6
Rear Mike Input
(Either Side) Ring Terminal of Other
Rear Mike Jack
10 White/Blue
Co-Pilot Transmit
Switch Co-Pilot Transmit Switch
(PTT)
11
White/
Orange
Co-Pilot Mike Input
Ring Terminal of Co-Pilot
Intercom Mike Input Jack
12 No Connection
TABLE 1 — *See Wiring Instructions Below
PIN
#J2 WIRE
COLOR
FUNCTION CONNECT TO
1 White/Black Pilot Mike Input
Ring Terminal of Pilot
Intercom Mike Input Jack
2 White/Red *1
Pilot Transmit
Switch Input
Pilot Transmit Switch (PTT)
3 Blue *2 Intercom Output Radio Headphone Output
4 Black *3 Ground
Hand Mike Jack Ground
Terminal (Point A)
5 White *4
Transmit Relay
(Key) Control
Output Tip Terminal of Aircraft Mike
Jack or Key Input of Aircraft
Radio or Audio Panel
6 Brown Mike Audio Output
Ring Terminal of Aircraft
Mike Jack or Input of Air
craft Radio or Audio Panel