Ronan X501NET - Manual (Page 27)

Chapter 2 - Interface
X501NET System Configuration Manual © 2008 Ronan Engineering Company 21
Note, if an IRIG-B is connected as a time source, do not select None. This can cause the year to
be unreliable.
2.6.3.6 IRIG-B mode Field
If an IRIG-B time code generator is connected to the X501NET, this field must be set to select to
mode
19
of operation of the IRIG-B
20
interface.
IRIG-B mode Description
Standard Use with standard (non-Ronan) IRIG-B time generators
Ronan enhanced Use Ronan enhanced time code generators that provide year in addition
the standard IRIG-B information.
Auto-sensing Automatically
21
select the correct IRIG-B mode.
Setting this field is very important. If a Ronan enhanced IRIG-B is not attached (either a
standard IRIG-B or no IRIG-B) the field must be set to Standard to avoid a risk of having the
year change due to noise on the IRIG-B port.
2.7 Input Cards Page
The Input Cards page displays the status of all input cards, and can be used by an
Administrator to enable/disable and configure input cards.
19
Since the standard IRIG-B frame doesn’t carry information about the year, Ronan Engineering has developed a
proprietary extension of the IRIG-B protocol that passed the year as additional frame validation information.
20 Specifically IRIG-B120.
21 Since the automatic selection of IRIG-B mode can not be guaranteed compatible with all non-Ronan time code
generators, this mode should not be used unless it is not possible to determine what type of IRIG-B generator is
connected to the X501NET.