FLEXCOMM
II
C-5000 (Non-Digital)
Installation Manual
150-1355-000 Rev. M
CONFIDENTIAL AND PROPRIETARY TO COBHAM
Page 127
F. Special Options
(1) Take Control
Two C-5000's can be wired so that they can share the control of a RT-5000. To implement this feature,
the installer must make use of the "Take Control" feature. Please review Figure 4-14 that shows the
installation of two C-5000's sharing control of two RT-5000's.
For two C-5000's to share the control of a RT-5000 the aircraft wiring must be made as follows:
(a) The wiring harness should have wires going between P501 from BOTH control
heads to RT-5000 #1.
(b) In addition, Pin 17 from each P501 connector must go to a switch that grounds
one or the other Pin 17. When the C-5000 sees a ground on Pin 17 of its P501
connector, it gives up control of the RT-5000 to the other C-5000. The display of the
control head without control will indicate dashes (-----) on the display to indicate no
control.
Note: If a second RT-5000 is also being shared between the two C-5000's the same
arrangement must go between P502 connectors AND A SECOND "Take Control" switch
must be installed.
Note: Take Control Switches should be clearly labeled to reduce operator confusion.
(2) Microphone/Headset Configuration
If two C-5000's are sharing radio #1, the primary mic/headset ports of the P500 connectors must be
connected together respectively and then tied into the FM1 port (or however its labeled) of the audio
panel. Similarly if two C-5000's are sharing radio #2, the secondary mic/headset ports of on the P500
connectors must be connected together and then tied into the FM2 port of the audio panel.
(3)
Explanation of Example System
In the example system shown in Figure 4-14 two C-5000's part number 31300-1202-1220 are sharing
the control of two RT-5000's. Note the following key elements of the wiring:
(a) The wires between P501 of both C-5000's are built in a "Y" configuration and run
to RT-5000 #1.
(b) The write between P502 of both C-5000's are built in a "Y" configuration and run
to RT-5000 #2.
