Rohde & Schwarz XD 4410A - Page 133

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Operator’s Manual • Use under Special Conditions
6076.0822.12.01 – 3.19 –
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The guard receiver is a common resource, meaning that it is not assigned to any particular
Comline.
There are two different ways for the guard receiver to be operated.
a) Without audio mapping
 Plug the module Guard Receiver ET 4400G into the M3SR Transceiver. No audio map-
ping is necessary.
 The guard receiver is only available in communication mode Voice / Data unciphered
(V/D UNCP).
 Depending on the selection made by using softkey GUARD (Menus 110 (MANUAL
FIX.FRQ) and 210 (USER PRESET FIX.FRQ)), the guard receiver AF signal is mixed
to the main receiver AF signal.
 Depending on the selection made by using softkey GUARD, the LEDs G (Control Unit)
and SQL G (Front Panel), as well as a status message in the display signal an emer-
gency call.
 Reception of an emergency call is signalled at contact X26.19 always, irrespective of
the selection made by softkkey GUARD.
 The volume of the GRx audio signal is configured in Menu 512 (AFI PARAMETERS).
b) With audio mapping
 Audio line NB2 is assigned to the guard receiver via Menu 560 (AUDIO MAPPING).
 The guard receiver AF signal is available on audio line NB2 irrespective of the commu-
nication mode and the selection made by softkey GUARD (Menus 110 (MANUAL
FIX.FRQ) and 210 (USER PRESET FIX.FRQ)).
 Reception of an emergency call is signalled at contact X26.19 always, irrespective of
the selection made by softkkey GUARD.
 The volume of the GRx audio signal is configured in Menu 512 (AFI PARAMETERS).
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