Specifications

Watson Ethernet
Operating Manual
Watson-Ethernet-Manual.doc
Version 3.3-01
5-4
Revision: 2010-01-20
rates an auxiliary +5 V
DC
which is used to pull-up the open collector alarm output
stages of the plug-ins.)
Both minirack mechanics and the plug-in tabletop housing have urgent and non-
urgent alarm relay contacts.
Urgent Alarm:
 At least one of the plug-in – LEDs displays an urgent alarm
 Power failure of any one of the plug-ins
 Power failure of the auxiliary +5V
DC
auxiliary supply on the ACU
 Power failure of both –48V
DC
supplies
Non-urgent Alarm:
 At least one of the plug-in – LEDs displays a non-urgent alarm and none of
the plug-in – LEDs displays an urgent alarm
 Power failure of any one of the plug-ins
 Power failure of the auxiliary +5V
DC
auxiliary supply on the ACU
 Power failure of one of the –48 V
DC
supplies
5.5 Initialization Errors
At system startup, various hardware selftests are performed. If any initialization
errors occur, the startup procedure will be aborted and appropriate error mes-
sages are sent to the serial interface (RS-232).
On the Watson Ethernet tabletop an initialization error code in hexadecimal re-
presentation is sent to the serial interface:
Error Code
Initialization Error
0x0001
Microcontroller RAM test failure
0x0002
EEPROM test failure
0x0004
Framer initialization failure
0x0008
DSL transceiver failure (Loop A)
0x0010
DSL transceiver failure (Loop B)
0x0080
Ethernet interface initialization failure
0x8000
Software Copyright Protection Error
Table 5-6: Software Initialization Errors (tabletop modem).
If several errors are detected simultaneously then the error code displayed is a
combination (OR) of the individual error codes, e.g. 0x83 will be displayed if dur-
ing selftest the RAM test fails, the EEPROM test fails and the Ethernet interface
cannot be initialized.