User`s manual

Data Options and Profiles
when a data call is not present. You may also select follow if your application
will not enter data mode unless it sees the DCD go from off to on.
See the instruction manual for your data terminal or PC application package to
determine which setting is appropriate.
DTR (Data Terminal Ready)
Option Values: follow, ignore
Applicable Data Protocols: All
Data Terminal Ready (DTR) lead is an electrical signal sent from your data
terminal to the ADM. The DTR option determines how the ADM responds to the
presence or absence of this electrical signal. The DTR lead is used by your data
terminal to indicate to the ADM that it is ready for communication. Many data
terminals turn the DTR lead on whenever the data terminal is turned on. If your
data terminal works this way, setting the DTR option to follow enables you to
end data calls by turning off your data terminal. If you want to retain active data
calls when your data terminal is turned off or while you change EIA cables, set
the DTR option to ignore.
If your application turns the DTR lead off during file transfer, set the DTR option
to ignore.
Interactions with Answer: If the DTR option is set to follow and Answer is set
to auto, the ADM automatically answers data calls only when the DTR lead is on.
If the DTR option is set to ignore and Answer is set to auto, the ADM
automatically answers whether the DTR lead is on or off.
Echo
Option Values: on, off
Applicable Data Protocols: All
This option determines whether characters sent from the data terminal in Data
Mode are echoed by the ADM.
If you select on, the ADM echos characters sent by your data terminal during
Data Mode.
Select on if your host computer or other data endpoint does not echo characters.
In addition, you will want to turn your data terminal’s echo capability off.
If you select off, the ADM does not echo characters sent during the Data Mode.
Thus, if your host computer or other data endpoint echoes characters for you,
select off. Otherwise, each character you type is displayed twice.
If you are transferring files, you will probably want to turn Echo off.
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