Westermo TD-32/485 Installation Manual page 33

&Xn – Select Synchronous Clock Source
This command selects the source of the transmit clock at synchronous communication. In asynchro-
nous mode the clock is completely turned off. In synchronous mode the clock is turned on with the
frequency of 1200 Hz or faster, depending on the speed selected for communication.
&X0 Selects internal clock. The modem generates the transmit clock signal and applies it to the
TXCLK serial interface.
(Pin 15 in the 25-pole D-sub).
&X1 Selects external clock. The modem gets the clock from the DTE equipment through
EXTCLK (Pin 24 in the 25-pole D-sub) and applies it on the TXCLK output (Pin 15).
&X2 Selects slave receive timing. The modem derives the clock signal from the carrier
and applies it on TXCLK (Pin 15).
Yn – Long Space Disconnect
This command controls whether the modem shall generate and react on a long space disconnect or
not. The value is written to S21 bit 7.
No generation or detection of "long space". (Default)
Y0
Y1 In non-error correction mode, the modem will send a long space for 4 seconds before it hangs
up. In error correction mode, the modem will hang up as a response to a "long space"
&Yn – Selection of Default Profile
This command selects which one of the two stored profiles the modem will use after a hard reset.
&Y0 The modem uses profile 0.
&Y1 The modem uses profile 1.
Please also refer to AT&W.
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