AR6201 - RT6201 - RCU6201 - AR6203
DV 14307.03 Issue 1 09/2013 Page 2-15
When /ISOL is active (isolation mode) passengers are isolated from pilots
intercom and from radio transmission, but still can freely communicate with
each other.
When /ISOL is inactive both the pilots and the passengers can hear all
communications.
Power Indication (/PWR_EVAL)
Pin No. Pin Name Direction Function
P1-24 /PWR_EVAL OUT
Power on Monitor output:
AR6201 “OFF” - open circuit AR6201 on
- closed circuit to GND (max. 100 mA)
This output indicates if the transceiver is switched on or switched off. It
is an open collector output type. The output is internally connected to
ground when the unit is switched on. In this case a current of maximum 100 mA
can flow into the transceiver to drive for example an external relay. The
output has high impedance when the unit is switched off.
Note: In order to avoid damage of this output a protection diode in parallel
to the external relay shall connected.
VHF Channel Signal Indication (/SQL_EVAL)
Pin No. Pin Name Direction Function
J1-4 /SQL_EVAL OUT
Indicates presence of the VHF
channel’s signal on the audio
This output indicates presence of the VHF channel’s signal on the audio
outputs. It is an open collector output type. The output is internally
connected to ground when the unit receives signal on the selected VHF channel
and this audio signal is available on audio outputs. In this case a current
of maximum 100 mA can flow into the transceiver to drive an external relay
for example. The output has high impedance when the unit is switched off.
External Mike Switch (/MIKE_SW)
Pin No. Pin Name Direction Function
J1-24 /MIKE_SW IN
Configuration selector CFG1 and CFG2.
ACTIVE state - closed contact to GND
The external Mike switch provides selection between the two available audio
in/out configurations: CFG1 and CFG2. Configurations can also be switched
during flight in installation setup.
• When /MIKE_SW is active then configuration CFG1 is used.
• When /MIKE_SW is inactive then CFG2 is used.
Each configuration CFG1 and CFG2 stores several parameters, that can be set
in installation setup pages. (For details refer to chapter 2.7).
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