
PS Engineering
PAC45J Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-045-2000
Page 2-13
November 2020
J7 SWITCH
NUMBER
FUNCTION
ON
OFF
1
UNSWITCHED #5
J452-57 IS UNSWITCHED
INPUT 5
J452-57 IS COPILOT
HAND MIC INPUT*
2
TEL/MIC
P451-58 IS WIRED TEL INPUT
P451-58 IS OBS #1
HAND MIC*
3
EXPANSION
J452-26 IS PASS 5 MIC INPUT
J452-26 IS EXPANSION
INPUT
4
RESERVED
N/A
DEFAULT
5
RESERVED
N/A
DEFAULT
6
EXPANSION
EXPANSION UNIT IN SYSTEM
NO EXPANSION
*NOTE* An additonal switch must be selected to utilize these Hand Mics. Contact PS Engineering for
information
J8 SWITCH
NUMBER
FUNCTION
ON
OFF
1
RESERVED
DEFAULT
N/A
2
RESERVED
DEFAULT
N/A
3
COPILOT FAILSAFE
COPILOT HEARS NAV 2
NO FAILSAFE NAV
AUDIO
4
PILOT FAILSAFE
PILOT HEARS NAV 1
NO FAILSAFE NAV
AUDIO
5
COPILOT FAILSAFE
COPILOT HEARS
UNSWITCHED 2
NO FAILSAFE
UNSWITCHED AUDIO
6
PILOT FAILSAFE
PILOT HEARS UNSWITCHED 1
NO FAILSAFE
UNSWITCHED AUDIO