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10.4 Menu: Reference Time
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10.4.2 Menu IRIG Input Management
The rst line of the display shows the system state with 8 options described above. Next line will shown the IRIG
code and the oset from UTC:
MRS Status and Setup
-> IRIG Input Management <-
OK
-> IRIG Receiver State <-
setup IRIG Receiver
F1
F1
Bit 7:
Invalid UTC parameter
Bit 6:
TCAP exceeded, jitter out of range
Bit 5:
Lock on
Bit 4:
Telegram error
Bit 3:
Data available
Bit 2:
Invalid sysconf
Bit 1:
Pulses enabled
Bit 0:
Warmed up
Time Code Receiver (IRIG)
IRIG Code: B002/B003 (DC)
IRIG Offset from UTC: +00.00
TCR State: --------
OK
-> IRIG Receiver State <-
setup IRIG Receiver
F1
F1
Invalid UTC parameter:
This bit is set to one if the checksum of the 'Oset from UTC' parameter, which must be used if no IEEE1344
extensions are available, is invalid. User must enter new `Oset from UTC' data to clear this bit. Please note that
the IRIG-receiver never leaves freewheeling mode if IEEE1344 is disabled and the UTC-Parameter are invalid!
TCAP exceeded, jitter out of range:
If the jitter between two consecutive IRIGtelegrams e/- 100
µ
s the receiver switches into freewheeling
mode and the 'TCAP exceeded' Bit is set. `TCAP exceeded' is cleared if the measured jitter is below +/- 100
µ
s.
Lock on:
'Lock On' is set whenever the receiver is in synchronous mode and the internal oscillator correction value has
settled.
Telegram error:
This bit is set if the consistency check of two consecutive IRIGtelegrams fails. The IRIG-receiver switches into
freewheeling mode if 'telegram error' is set.
Data available:
'data available' is set if the receiver can read the timecode.
Invalid sysconf:
If 'invalid sysconf' is set the checksum of the system conguration data is invalid. In this case the default mode
`IEEE1344 disabled' is selected. User must cycle the system or enter a new system conguration in the IRIG-
parameter
menu.
Pulses enabled:
The pulse per second (PPS) signal which increases the NTP's accuracy is turned when 'lock on' is set the rst
time. The 'pulses enabled' bit is set if the PPS signal is enabled.
Setup IRIG Receiver:
LANTIME M600 MRS
Date: 31st July 2014
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