4 GNSS Receiver
->Version Info<-
Recv. State
OK
OK
IRIG (TCR)
Version Info
->Recv. State <-
TCR sync.
SN: TCR: X.XX
OSC: TCXO
State: --*-*-**
DRIFT: +00000us
TFOM: 0x00
AGC:0xFF SC:0x02
IRIG Receiver State: Bit 7 ... 0
Bit 7:
Invalid UTC parameter
Bit 6:
TCAP exceeded, jitter out of range
Bit 5:
Lock on
Bit 4:
Telegramm error
Bit 3:
Data available
Bit 2:
Invalid sysconf
Bit 1:
Pulses enabled
Bit 0:
Warmed up
Invalid UTC parameter:
This bit is set to one if the checksum of the ‘Offset from UTC’ parameter, which must
be used if no IEEE1344 extensions are available, is invalid. User must enter new ‘Offset 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 IRIG-telegrams e/- 100us
the receiver switches into freewheeling mode and the ‘TCAP exceeded’ Bit is set. ‘TCAP exceeded’ is cleared
if the measured jitter is below +/- 100us.
Lock on:
‘Lock On’ is set whenever the receiver is in synchronous mode and the internal oscillator correc-
tion value has settled.
Telegram error:
This bit is set if the consistency check of two consecutive IRIG-telegrams fails. The IRIG-
receiver switches into free wheling 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 configuration data is invalid. In this
case the default mode ‘IEEE1344 disabled’ is selected. User must cycle the system or enter a new system
configuration 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 first time. The ‘pulses enabled’ bit is set if the PPS signal is enabled.
IRIG system configuration Bit 2 ... 0
Bit 7 ... 4:
reserved
Bit 3:
ignore Day Of Year enabled
Bit 2:
ignore TFOM
Bit 1:
ignore SYNC
Bit 0:
IEEE 1344 enabled
IMS-GNS181 Setup Guide
Date: 20th March 2020
35
Содержание IMS-GNS181
Страница 1: ...MANUAL IMS GNS181 Setup Guide Hot Plug Module 20th March 2020 Meinberg Funkuhren GmbH Co KG...
Страница 2: ......
Страница 53: ......
