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MultiFRAD 3000-Series User Guide
Data Port Configuration
The Data Port Configuration dialog box allows you to change the parameters of the data transferred
between the data device and the MultiFRAD. The MultiFRAD can transfer data between the data
device and MultiFRAD in either synchronous or asynchronous mode. If your data device is an
asynchronous device, choose the Configure Asynchronous option and configure the MultiFRAD to
match your device. If the data device is a synchronous device, choose the Configure Synchronous
option and configure the MultiFRAD to match your synchronous device. The Data Port Configuration
dialog box also allows you to configure each channel independently.
For example, port 1 could be connected to a Multi-Tech MultiMux MMH904. In this situation, port 1
could be configured with the following options:
• Data Port Mode set to APSM (Advanced Priority Statistical Multiplexing),
• Synchronous Configuration,
• Internal Clocking with Speed set to 19200,
• Encoding Scheme set to NRZ for all Multi-Tech Muxes,
• Between Frames set to Send Flags, and
• InterFrame Timer (in ms) has to be off.
The MMH904 would have to be configured for an external composite link device. This means that
the 8-position DIP Switch on the MMH904 would have to be toggled to the closed position and an
external composite link cable connected between the MMH904 and the MultiFRAD Channel
connector.
In most applications, the encoding scheme, interframe timer, and between frames will be used at their
default settings. If you are unsure of your device’s configuration, start with the defaults or refer to
your device’s documentation.