4RF Aprisa XE User Manual page 139

HSS DCD Mode
Set the DCD Mode as required according to the table below. This setting is only relevant in DCE mode.
DCD Mode
Always Off DCD driven to off state
Always On DCD driven to on state
Follows Carrier + DCD follows the state of
Remote DCD the RF link and the remote
terminal DCD input control
line if the remote HSS is a
DTE. If the remote
terminal is a DCE, then
DCD only follows the state
of the RF link.
Follows Carrier + DCD follows the state of
Remote RTS the RF link and the remote
terminal RTS input control
line when the remote HSS
is a DCE.
Set the XTxC Enabled control as required. Depending on the synchronous clock selection mode selected,
disabling XTxC will allow the terminal clock to be substituted for the external XTxC signal.
HSS as a DCE
NOT applicable
Aprisa XE User Manual
Configuring the Traffic Interfaces | 137
HSS as a DTE
Control line pass-through
mode where DCD is
carried over the link from
end to end. The carrier
(as above) plus the
remote terminal input
control line must be
present to output the
local control line signal.
The HSS Control bit in the
Cross Connections
application must be set
for the remote signalling
to operate.
For switched carrier
applications this provides
RTS-DCD pass through
(DCE to DCE
configuration) and DCD-
DCD pass-through (DTE to
DCE configuration).
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