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Connect data modules
4. Set the DSR lead to ON.
5. Set PERMANENT CONNECTION to YES.
6. Exit and save changes, as described above, in
the
7400C''.
Configuring the 7400D data module
The 7400D data module is a converted 7400A used for synchronous data
transmission (see
configure the 7400D just as you would a 7400A, except that there is no SET
INTERFACE option (the 7400D is an answer-only device that cannot originate
calls). It supports DCE mode only. DTE modem-pooling is not supported. The
PHONE and PORT2 connectors are not used.
The following table lists recommended settings for a typical installation. For the
configuration procedure, see the subsequent sections.
Recommended settings for typical configurations
The table below summarizes the recommended configuration values for the
7400D data module. The procedures for setting these values follow.
Options
300
1200
2400
4800
9600
19200
ANSWER
CI
CH LEAD
CTS LEAD
DCD LEAD
DSR LEAD
DTR DETECT
DTR LEAD
555-233-116
Figure
16). It is a direct replacement for the MPDM. You
CMS settings
OFF
OFF
OFF
OFF
ON (OFF for R8r)
OFF (ON for R8r)
AUTO
OFF
OFF
NORMAL
NORMAL
NORMAL
50 MSEC
FOLLOW
''Setting the data speed for
DCS settings
OFF
OFF
OFF
OFF
ON
OFF
AUTO
ON
OFF
NORMAL
ON
ON
50 MSEC
IGNORE
Continued on next page
Issue 4 October 2002
83
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