R&S M3SR 4100 Series, Operating Manual

Page: 380 / 706

M3SR Series 4100 Switching the User Unique Function On or Off
4.44 Operating Manual 6175.4760.02 – 01
4.3.6.8 Switching the User Unique Function On or Off
Softkey Type Description
Toggle 1. Press softkey to toggle user unique func-
tion on/off.
Possible values:
• ON
• OFF
The user unique function is used to control the
link mode. Three types of link modes are de-
fined. These types are manufacturer specific.
• Analog voice (for modes +J3E and –J3E)
• F1D (for mode F1D)
• Modem (for external or internal modems)
The default link mode is analog voice (J3E),
i.e. if no UUF is used, the link mode is analog
voice.
The radio has the capability to send and pro-
cess the UUF words defined also for other Ro-
hde & Schwarz radios supporting UUF.
In the call phase a UUF command word de-
pending on selected the link mode is transmit-
ted.
When the receiving radio receives a UUF, it
automatically switches the link mode indicated
with the UUF.
The UUF ‘Analogue voice’ is transmitted for
modes +J3E and – J3E, so make sure that the
other radio was set beforehand to the right
sideband in the ALE FF Operational menu
(page 1111).
UUFs exist for F1D and external modem oper-
ation as well.
The UUF does not distinguish between the
various available modems like STANAG-
4539, S-4285, so please use equal modem
settings within your ALE net.
For interoperation with devices from other sup-
pliers it is recommended to switch UUF off.