AVT Titan, Operator'S Manual

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C H A P T E R 3 : O P E R A T I O N W I T H A P C
3.3.7.1.1 LSD MODE
The LSD MODE selector switches the LSD data channel on or off. It also de-
termines how the LSD data
1
is used. The possible settings are:
3.3.7.1.2 HANDSHAKE
The HANDSHAKE selector is used to select the handshake procedure for the
LSD interface from the following possibilities:
Use the handshake procedure whenever possible. This ensures that there is
no loss of data, even at low data rates
2
3.3.7.2 HSD SETTING
The HSD (X.21) MODE switch switches the videocodec HSD channel on or
off.
3.3.7.3 TIMESLOT 16 SETTING
The TIMESLOT 16 switch activates/deactivates the TS-16 interface.
Setting Meaning
OFF No data rate reserved for the LSD channel
V.24 The LSD data is available at the partner’s LSD interface. The transmission is
bidirectional.
PRINTER If the partner (far end) is also using a Philips TITAN videocodec, the LSD data
received there is output at the printer interface at the TTL socket.
CURSOR In this mode, the LSD channel carries the graphics cursor data. A prerequisite
is that the far-end equipment is also a TITAN videocodec.
COMMANDS This mode is used for the transmission of commands to the far end for remote-
control purposes. This mode can only be used between TITAN equipment.
1 If an LSD channel is activated, a B channel (or timeslot) is reserved for audio and LSD data. If the LSD is inactive,
the free data rate is used for the encoding of video data.
Setting Meaning
OFF No handshake
RTS/CTS Handshake via the RTS/CTS lines of the RS232 interface
XON/XOFF Protocol handshake
2 If the buffer is full, the handshake procedure halts the transmission from the data source to the TITAN videocodec.
The buffer memory cannot overflow, therefore.
A correctly set data rate for the physical interface ensures that the data sink can process the received data