If you donít see exactly what you need on our pages, please email us. We are always happy to offer free advice and if we can help we will send you a quotation. All our products have been designed to be easily modified to solve a wide variety of interface and connectivity problems.
The D90 Range of interface modules
- an adaptable system for solving the compatibility problems of multi-vendor environments and a variety of connectivity problems
This page was last updated August 2004
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Each subrack comes complete with a heavy duty power supply that can support up to 14 D90 interface modules. The subrack will fit into a standard
3U (162mm) height cabinet. Each module has a width of 6HP (30mm) and is fitted with one or more standard connectors for connection to
computer and terminal equipment. The front panel of each module is fitted with LEDs which indicate system status as well as error
conditions detected by the built in diagnostic system. All components of the D90 system conform to our high quality standards.
Economical and Expandable
The special design features of the D90 range mean that you can buy just what you need. No need to buy another box if you already have
a data comms cabinet with spare space. You can start with the minimum and add more as your requirements grow. If you do decide to take another route, you will
not have bought a lot of surplus equipment you never use.
Modular Hardware Architecture
A range of D90 interface modules has already been designed to address the most common connectivity problems. These include single
synchronous, asynchronous, dual asynchronous, LAN and X25 modules. Lucidata's in-house state of the art design facilities allow us to produce new
module designs in a matter of weeks. So if we haven't got it , and you need it, we can make it!
No switches or complicated instructions. The optional Diplomat Network Monitor module enables simple
re-configuration of all the modules present. At power up this module automatically initialises all the other modules from configuration data held in the battery backed memory.
By plugging in a standard asynchronous terminal or PC, the current configuration is presented and can be altered using the simple built in
menus. Any changes to the configuration are stored in battery backed RAM for the next automatic restart.
Parameters that can be altered include transmit and receive speeds, parity and word length. Internal or external clocks may be selected
and signals such as DCD, DTR and RTS can be monitored or controlled on each port. Application specific parameters, such as poll address
and port mapping, can also be altered using the Network Monitor.
Protocols and Emulations
Within each D90 interface module is an EPROM containing all the necessary software for a particular protocol, emulation, code conversion or
other communication task. A range of protocols is available now - and more are under development. Currently available protocols include TCP/IP, Ethernet, IBM
2780, 3780, 3270, Bull VIP and ICL CO3. A selection of terminal profiles from our library can also be included in the firmware to enable
similar presentations to be made on a wide variety of terminals.
The D90 range is designed and manufactured in the UK by Lucidata using the latest CAD/CAM facilities to ensure a very high quality
product. Because we have control over every aspect of our products, we can offer a high degree of technical support and flexibility. Many of our
clients have special requirements and we are always happy to accommodate them. For more information please contact us at
The D90 Network Monitor Module (DNM)
This module is used to re-configure other modules present in the rack via software control. It is fitted with a D25
female connector which can be connected directly to an asynchronous terminal or PC. The current configuration of all
the modules is presented with simple menus to enable various parameters to be changed - data rate, parity, echo,
cluster address, poll address etc. The DNM can also gather statistical information from the modules that collect them as well
as perform diagnostic tests during normal operation. A DNM is essential for configuring the rack where the D90
equipment forms a node within a much larger network. If this module is not present, the configuration parameters default to
factory set values.
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The D90 Serial Synchronous Module (SS1)
This module is fitted with a single channel synchronous interface. It is used to connect to typical synchronous mainframe ports running the full range of Diplomat supported protocols. It can be configured to use
its own internal programmable clock or to use an external clock. When fitted with a D25 male connector it is configured
as a DTE and when fitted with a D25 female connector it is configured as a DCE. The SS1 is normally fitted with
communications protocol emulation firmware, such as model IB7 which supports the IBM2780/3780 BSC protocols for dial-up or ATM support. All communications parameters are configured using the Diplomat Network Monitor if one is installed.
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The D90 Dual Serial Asynchronous Module (SA2)
This module is fitted with dual asynchronous channels and forms the main asynchronous terminal interface module. It
is also used in stand alone mode as a single channel asynchronous protocol converter. In normal operation, these
modules are slaves to a network connection or host connection module. They can also be controlled and configured via the
Diplomat Network Monitor if one is installed. The two D9 female connectors are configured as DCE and are directly
compatible with the standard COM1: pin-out of the IBM PC. They are normally fitted with terminal emulation firmware.
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The D90-LAN Module
The D90-LAN module is fitted with a standard RJ45 jack for connection to a 10BaseT network using UTP cabling. It can optionally be supplied with a 10Base2 coaxial connector. The type of connection is determined automatically by the firmware. In conjunction with a
Diplomat Network Monitor fitted with the appropriate LAN control option it can operate as a node in many different
network configurations. At its simplest level of operation it provides the network transport mechanism used by the D90 to
distribute its protocol and emulation facilities geographically. Standard protocol stacks supported include TCP/IP, UDP, ICMP and
ISO 8073. These require the installation of the appropriate LAN control option. Two or more D90-LAN modules in a
single rack allow the construction of simple Bridges and Routers.
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