PS Engineering PMA7000M-S Installation Manual - Manual (Page 16)

PS Engineering
PMA7000M-S Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-070-0012 Page 2-9 Rev. 12, Sept. 2000
Audiovox Series 5
Motorola TeleTAC, DPC 550, DPC65-, Lite Series, Profile Series
Motorola Elite, M70, M75, SC-725
Motorola Bag Phones, Mobiles
NEC100 Series, 110, 120, 180, Sport
NEC 700 & 800 Series
OKI 900/910, AT&T 3730/3710
OKI 1150/1145, AT&T 3760
Fujitsu PCX
Mitsubishi 4000, DiamondTel 22X/20X/18X
NEC960
NEC DT2000 Digital Phone
Unauthorized use of cellular telephone devices in aircraft is subject to FCC enforcement action,
which may include a $10,000 fine per incident. PS Engineering, Inc. does not endorse using unap-
proved cellular telephone equipment in flight, and takes no responsibility for the user’s action.
2.8.1 Hook Switches
While the mic selector acts as the hook switch for the pilot, additional hook switches must be installed to
have full access to the cellphone system. The copilot hook switch is a SPST switch that connects pin L of J2
on the PMA7000M-S to ground to place the copilot on the cellphone.
PMA7000M-S J2, pin M is the passenger hook switch. Install a SPST switch in a location adjacent to each
passenger headset where cellphone use is desired. When pin M is connected to ground through any switch,
the passenger microphones are all on the cellphone system.
The wireless communication “tel” system utilizes an intercom loop. Therefore, any time the cellphone is in
use from the pilot or copilot side, pilot and copilot will lose intercom capability. In the ALL mode, when the
passengers’ activate the cell phone, the pilots will have intercom, and continue to hear and transmit over the
avionics normally. However the passengers will not have intercom, because they are on the telephone.
To prevent unwanted distractions, only the pilot and copilot will hear an incoming call ring signal. They can
then decide to allow a passenger to activate the hook switch and use the telephone.
If the pilot has selected “TEL” mode, the passengers cannot access the telephone in the “CREW” intercom
mode, but they will hear the call.