PS Engineering PMA8000B Pilot’s Guide - Manual (Page 6)

Page 6 202-890-0202 PMA8000B Pilot Guide Rev. 6
Select either of the com XMT buttons to exit the split mode. It is not possible
to have the pilot on Com 2 and copilot on COM 1 in split mode. In the split
mode, the intercom is disabled, and the MUTE indicator is on. Push MUTE
to enable the intercom if desired.
NOTE: Due to the nature of VHF communications signals, and the
size constraints in general aviation aircraft, it is probable that there
will be some bleed-over in the Split mode, particularly on adjacent
frequencies. PS Engineering makes no warranty about the suitability
of Split Mode in all aircraft conditions.
Telephone (TEL) (10)
The TEL mode serves as a full duplex interface and distribution
for telephone systems such as portable cellular phones with ear-
piece jacks. Pressing the button connects the telephone to the
users as follows:
In ALL intercom mode, all crew and passengers will be heard on the phone
when they speak. Com and other selected radio audio is also heard in the
headsets. If the pilot or copilot pushes the radio PTT, their mic will be trans-
ferred to the selected Com radio. The telephone party will not hear ATC
communications, and vice versa.
In CREW mode, only the pilot and copilot are connected to the telephone.
Passengers will not hear the telephone.
In ISO intercom mode, only the pilot will hear the telephone, and only he
will be heard. He will also have access to Com 1 or 2, and will transmit on
that radio using the PTT. Selected radio audio is provided to the pilot.
In cases where the cellular telephone doesn’t provide sidetone, the audio
panel can be configured, by holding the TEL and ADF buttons for more than
one second, to create sidetone for you.
Stuck Microphone Protection
The PMA8000B will sense if the pilot or copilot radio PTT remains keyed
for more than 32 seconds. When a stuck mic is detected, the key input is
ignored, and the other crewmember can transmit normally. If the stuck be-
comes ungrounded, normal operation is restored.
Utility Jack
The 2.5 millimeter (3/32”) jack on the front of the PMA8000B has three dis-
tinct functions, cell phone input, Advisory audio input and music input
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