12
The 10Base-FL connection is via the two ST fibre connectors
and is used for longer range communication over fibre optic
cables.
The white coloured connector is for transmit and the grey colour
for receive.
The connectors are suitable for 62.5/125 multi-mode micron
fibre cable. The wavelength used is 1300nm.
The IDM uses TCP/IP protocol.
Ethernet Firmware Installation
Two versions of firmware exist for IDMs. A typical file name,
where x, y and z are the firmware version numbers, would be as
follows:
# vx080201_x-y-z.bin - For RJ45 twisted pair
ethernet only
# vxAUI080201_x-y-z.bin - For fibre optic ethernet
only
Unless otherwise stated, the shipping default firmware is of the
vx type, which will only support RJ45 twisted pair networking.
If fibre optic network cabling is being used the vxAUI firmware
needs to be uploaded to the DAU.
Firmware is updated using IDMCal software. Refer to
Appendix K, IDM DAU Recovery, for more information on
updating firmware.
As the network will not be active if the wrong firmware is
installed, the uploading will have to be executed through direct
connect or XModem.
The firmware is referred to as Application within IDMCal.
Serial Ports
Each DAU has two serial ports, RS232 (1) and RS232 (2). Port
(1) is accessible on the front panel as well as each rear panel.
The pin out for the RS232 (1) and (2) is given in the following
table:
RS232 (1) RS232 (2)
Pin 1 Pin 1
Pin 2 RXD Pin 2 RXD
Pin 3 TXD Pin 3 TXD
Pin 4 DTR Pin 4 DTR
Pin 5 GND Pin 5 GND
Pin 6 Pin 6 DSR
Pin 7 RTS Pin 7 RTS
Pin 8 CTS Pin 8
Pin 9 Pin 9
A modem, PC or printer can be connected to the serial ports via
standard serial cables.
Port (2) can be configured as an RS485 output via internal link
selection and the RS485 D-type connector on the rear panel.
When a DAU is equipped with an internal GPS time decoder or
IRIG-B time decoder theses devices use the COM 2 port to
interface to the processor and it is no longer available for
external use. Inside the front panel two jumpers, J3 and J4,
select whether the ports is available for external use or is
configured for use by an internal time decoder. For both jumpers
position A is selected for external use and position B is selected
for an internal time decoder.
The pin out for the RS485 connection is given in the following
table:
Pin 1
Pin 2 A
Pin 3 B
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9 GND
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