Statement Of Volatility; Removing All Information From A Unit; Security Notice; Product Limitations And Features - 4Links Multi-link SpaceWire Recorder Version 4 User Manual

11. Statement of Volatility

4Links EtherSpaceLink family products do not retain any captured data after a unit is powered off. All functionality
is volatile and is loaded from a memory card. Removal of the memory card and removal of power deletes all
functionality from the unit.
The only user-dependant value stored after power-down is the IP address of the unit. The only nonvolatile code in
the unit is that in an 8-bit microcontroller which is used to drive the front-panel display and to re-boot the unit
from a valid memory card.

11.1. Removing all information from a Unit

The procedure for removing all information and functionality from a unit is:
1. Use the front-panel switch to set the IP address to 0.0.0.0
2. Remove the memory card
3. Remove power from the unit
No user-dependant value or data now resides in the unit.

11.2. Security Notice

The configuration files stored on the memory card define the function of the unit. These are encrypted and can be
used only with the specific unit they were created for. The data on the card cannot be used to configure any other
unit.

12. Product Limitations and Features

12.1. Ethernet
The TCP/IP packet re-transmission timeout is set at a fixed period of 1 second; it should be statistically derived
from the performance of the network. Congestion control of the Ethernet packet transmit rate is not
implemented. This is not an issue in local area networks where errors are (very) rare and packets are
acknowledged in much less than one second; problems may arise with large non-local networks.
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