
VT100 Interface 4-23
the Serial port goes high. The unit exits the loop when the LL pin goes low. If
you select “Disable,” the unit ignores the LL pin on the Serial port.
For more information on pin assignments, refer to
"Serial Interface Pin
Assignments, DCE Mode"
Selecting “Enable” allows the unit to respond to in-band V.54 loop codes. If
you select “Disable,” the unit ignores these codes.
Clear to Send can be set to “Forced True,” “Forced False,” or “Internal.” If
this parameter is set to “Internal,” the CTS control lead follows the RTS
control lead from the DTE after a delay of a duration established by the RTS/
"RTS/CTS Delay"
Forced True, Forced False, Internal
Data Set Ready can be set to “Forced True,” “Forced False,” or “Internal.”
The “Internal” option sets DSR “On” if the port is enabled and “Off” if the
Forced True, Forced False, Internal
Data Carrier Detect parameter can be set to “Forced True,” “Forced False,” or
“Internal.” If set to “Internal,” DCD is “On” when network carrier is being
received from the remote end, and is “Off” when network carrier is not being
received from the far end.
Forced True, Forced False, Internal
Request to Send determines the source from which the unit reads the RTS
signal status. If set to “Normal,” the unit gets RTS from the DTE on the
Serial interface. If set to “Forced True,” RTS is always perceived as “On.”
Request to Send/Clear to Send determines how long the unit waits before it
changes the level of CTS to match RTS when the CTS parameter is set to
Normal (~30 ms delay), Long (~100 ms delay)
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