Selecting The Hf Modem Waveform - R&S M3SR 4100 Series Operating Manual

M3SR Series 4100
4.5.4.7

Selecting the HF Modem Waveform

Softkey
4.140
Type
Listbox
Selecting the HF Modem Waveform
Description
The following HF Modem waveforms are avail-
able in the listbox:
STANAG 4539
75 bps to12800 bps, AUTOBAUD capability,
best choice for external ARQ protocols, use
this setting for MIL-STD-188-110B, Section
5.3 and App. C and S4415 operation as well
MIL-STD-188-110B, App. F
9600 to 19200 bps, for High data rate ground-
wave links on clear channels, Independent
Sideband operation
STANAG 4285
75 to 3600 bps, best choice for BROADCAST
applications
STANAG 4529
Narrowband (1240 Hz) Maritime Shore-to-
Ship HF Traffic Waveform (75 bps to
1800 bps, best choice for bandwidth-limited
broadcast applications)
STANAG 5065
MSK, Rx only, 300 bps, for interoperation with
legacy equipment
STANAG 5065
FSK, Rx only, 75 bps, for interoperation with
legacy equipment
STANAG 4481 PSK
300 bps, for interoperation with legacy equip-
ment
STANAG 4481 FSK
50 bps to 600 bps, for interoperation with leg-
acy equipment
For modem operation in MIL-STD-188-110B
Section 5.3, App. C, S4415, please select
'4539' here and then the appropriate user data
rate in the HF Modem Operational menu.
For most severely degraded channels, the
'4539' waveform setting and a user data rate of
75 bps are the perfect choice.
*Those waveforms are not selectable directly,
but they are interoperable with
STANAG 4539. Therefore one should adjust
STANAG 4539 when communication with one
of these waveforms is intended.
Operating Manual 6175.4760.02 – 01