Operating instructions

User Interfaces DMD20/DMD20 LBST Universal Satellite Modem
4-26 TM103 – Rev. 2.8
RAW BER Displays the estimated channel error rate (before
decoding) measured by the modem.
CORRECTED BER The CBER display shows an estimated corrected bit
error rate of the modem. Depending on the symbol rate
the modem is running, the high-end performance scale
of this display will vary (10 E
-9
, 10
-10
or 10
-11
). At some
symbol rates, a better than scale reading will appear as
0.0 x 10
-00
. At other symbol rates, it will appear as E**. In
either case, they both mean performance is better than
the scale upper limit.
BIT ERRORS Displays the current error count from the Viterbi
Decoder.
ETHERNET LINK STATUS (menu) (the following sub menus only display when
Ethernet is selected as the interface type)
TOTAL PACKETS Displays the total number of Ethernet packets received
from the satellite (Only visible when Ethernet is
selected as the interface type).
ERROR PACKETS Displays the number of error Ethernet packets received
from the satellite (Only visible when Ethernet is
selected as the interface type).
PKT ERROR RATE Displays the satellite Packet Error Rate (Only visible
when Ethernet is selected as the interface type).
PKT STATS RESET Allows the user to reset the Ethernet packet statistics by
pressing <Enter> (Only visible when Ethernet is
selected as the interface type).
LINK STATUS (menu) (the following sub-menus only display when
Ethernet is selected as the interface type)
The status of the following ports may be one of the following:
Down: The link is down.
Unresolved: Unable to agree on connection speed.
10 Mbps Half: Connected at 10 Base-T Half Duplex.
10 Mbps Full: Connected at 10 Base-T Full Duplex.
100 Mbps Half: Connected at 100 Base-T Half Duplex.
100 Mbps Full: Connected at 100 Base-T Full Duplex.
Unused: The port is not available.