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Functional Description and Specifications RUB SW
System Tally
Reflects the state of the relays, the GPOs, the lamps and the LEDs. The GPOs, lamps and
LEDs have programmable functions. For service purpose, 'System Tally' reflects the state of
the default function, independent of what has been really assigned to.
relay 1
Reflects the sense of the 1
st
latching relay: 0 = primary position, 1 = back-up.
relay 2
Reflects the sense of the 2
nd
latching relay: 0 = primary position, 1 = back-up.
relay 3
Reflects the sense of the 3
rd
latching relay: 0 = primary position, 1 = back-up.
GPOs:
0 = output/function inactive, 1 = output/function active.
gpo 1
‘Signal 1 Fail
ure
’: Any failure of signals at
CLOCK IN 1
.
gpo 2
‘Signal 2 Fail
ure
’: Any failure of signals at
CLOCK IN 2
.
gpo 3
‘Word Clock Warning’:
Any signal pair error detected.
gpo 4
‘System Warning’: Any
error regarding the real-time reference or self test.
Lamps:
0 = off/function inactive, 1 = on/function active.
lamp 1
‘Fail’: = 1 if any failure has happened (“
overall failures
“ > 0).
lamp 2
‘Primary’: = 1 if output
CLOCK OUT
is switched to
CLOCK IN 1
.
lamp 3
‘Signal 1 present’:
= 1 if at least one valid signal at
CLOCK IN 1
is present.
lamp 4
‘Signal 2 present’:
= 1 if at least one valid signal at
CLOCK IN 2
is present.
LEDs: 0 = off/function inactive, 1 = on/function active.
led 1
‘Operation’:
= 1 if the module is operating.
led 2
‘Switcher Signal’: Reserved.
led 3
‘Switcher Set’
: = 1 if real-time reference signals (PPS IN, RXD IN) are present.
led 4
‘Switcher Error’:
= 1
as long as “
overall errors
” counter > 0
.
System Status
d/a converter check
Result of checking all D/A converters after power-on.
output
CLOCK OUT
is currently switched to the primary or the back-up source.
word clock received
Word clock monitoring and changeover procedure starts, if at least
one word clock signal has been detected.
overall failures
Current valu
e of the “
overall failures
” counter
.
overall errors
Current value of the “
overall errors
” counter
.
Changeover events: Number of all automatic and manual changeover events. Information
about the last event: Automatic or manual, date & time at that moment.
Individual system errors:
Error
Description
power on
Check after power has turned on: Invalid set-up
parameters found and/or latching relay error found. There
is no individual counter provided for this error.
relays
The sense of one of the latching relays does not corres-
pond to the intended switching position. An error will be
indicated and counted.
word clock frequency difference
word clock 1 ... 4
The frequencies of the signals within a pair should be
equal. An error will be indicated and counted.
word clock signal to signal drift
word clock 1 ... 4
No drift should be detectable between the signals of each
pair. If a
drift equals or exceeds the limit ‘Limit Signal to
Signal Drift’, an error will be indicated an
d counted.
