R&S M3SR 4100 Series - Selecting the Link Mode

Operating Manual 6175.4760.02 – 01 4.79
M3SR Series 4100 Selecting the Link Mode
4.4.4.2 Selecting the Link Mode
Softkey Type Description
Listbox
The 'Link Mode' softkey is only enabled if the
call status is 'Listening'.
In all other cases it stays disabled.
1. Press 'Link Mode' softkey.
2. Select desired link mode from listbox.
3. Press 'ENT' to confirm.
The new link mode is now selected.
Possible values:
• ANALOG VOICE / FF
• INTERNAL MODEM
• xDL (ARQ protocols)
• SEC DIG VOICE
• LAST DITCH VOICE
If an ALE link is estblished, the selected link
mode gets active for traffic.
If Analog Voice/FF is selected as link mode,
the parameters preselected in FF Operation
menues and FF CONFIG menues get active
(see sect. 3.7.3 Fixed Frequency Configura-
tion Menus).
If Internal Modem is selected as link mode, the
parameters preselected in HF Modem Opera-
toin Menues and HF Modem CONFIG menues
get active (see sect. 4.5.4 HF Modem Config-
uration Menu).
If xDL is selected, one of the available ARQ
protocols (Automatic Repeat Request Proto-
cols) is acitve for packet data transmission,
dependant on the xDL Mode selection (see
sect. 4.4.5.7 Selecting the xDL Mode).
If Secure Digital Voice is selected as link
mode, the parameters preselected in Secure
Operation menues get active.
Availability of selectable Link Modes depends
on the configuration of the current preset
page. If COMSEC is activated on the current
preset page only the secure Link Modes “xDL”,
“SEC DIG VOICE” and “LAST DITCH VOICE”
are available. With COMSEC deactivated, the
unsecure Link Modes “ANALOG VOICE /
FF”,“INTERNAL MODEM” and “xDL” are avail-
able for selection.