Teletronics WINC2400C User Manual

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address should be assigned to this configuration. The address is on the sticker attached to the side of
the MASTER unit.

(6) Change Channel Number:

Operating in the synchronous mode, twenty (20) 4-MHz channels are available for communications.
If, however, you wish to select a specific channel you must coordinate that choice with the distant end
and use this menu to select the desired channel.

(7) Change operation protocol:

This selection determines whether the synchronous interface between the DTE and the WINC 2400C
(DCE) is transparent (i.e. no meaning is associated with any bit or bit sequence) or HDLC (i.e. a
“bit-oriented” protocol in which data bits are “framed” by standardized bit sequences). For proper
operation the DTE and the DCE should be configured identically. Note that the system must be reset
for this change to take effect. We recommend the choice of transparent.

(8) Change power level:

Using this selection you can choose any one of four transmission power levels, if available.
Otherwise, this selection is not operative.

(9) Change FEC Check Operation:

When operating synchronously, forward error correction (FEC) is used to improve the link
performance. This selection determines whether only error-free packets are passed to the DTE (FEC
ON) or whether all packets are passed (FEC OFF), i.e. even those packets with known errors are
passed to the DTE.

(A) Change Master - Slave mode:

For proper operation of the system, the broadcaster must be designated as the master. And, receivers
must be configured as the slave. This selection is used to make such a designation. Note that the
system must be reset before this instruction takes effect.

(B) Change air Time-Out value:

This value determines how long the link remains established without receiving the handshake control
packet.

The WINC 2400C uses separate spreading code sequences for synchronization and communications.
The preamble is used for synchronization and consists of 16-code patterns, each 63 chips in length.
This selection allows one of those patterns to be chosen. Note that the system must be reset before a
new pattern takes effect and both the local and distant terminals must use the same code pattern.

(D) Change air Spreading Code pattern:

The spreading code used for communications can be either 11 chips or 31 chips in length. This
selection allows either one 11-chip code or one of nine 31-chip codes to be chosen. As above, the
system must be reset before this selection takes effect and the same code must be selected by both the
local and distant end. Please consult Teletronics before making the intended change.