Transparency Feature
Transparency is only available when using Auto-Negotiation mode; it is
not available in either of the two Force modes. When the McPC 10/100
is auto-negotiating, Transparency treats the connection between the two
end devices as if there were no media converters installed. For example,
in a typical application where two media converters are installed between
two copper-based switches, the twisted pair cables as well as the fiber
cable are seen as a single entity. Therefore, if a fault occurs on any
segment between the two end devices, link LEDs on the end devices will
go out.
As stated, Transparency is available when theMcPC 10/100 is operating
in Auto-Negotiation mode. Therefore
6
(AN) must be
ON
and
5
(LFD),
7
(Force) and
8
(10 or 100) must be
OFF
.
6
5
Link Fault Detection Feature
Link Fault Detection (LFD) is only available when using Force 10 or
Force 100 mode. It is not available in Auto-Negotiation mode. When
LFD is enabled and the input link is down at one interface to the McPC
10/100, the transmitter output on that interface will blink. It applies to
both network interfaces and to both data rates. If the link at the other
interface to the McPC 10/100 is also down, there is no output. LFD
causes the Link Up indicator of the link partner to blink.
When the McPC 10/100 is in one of the Force modes, enable LFD by
setting
5
to the
ON
position. Disable LFD by resetting
5
to its default,
OFF
, position. In order for LFD to function properly, Force mode must be
enabled by setting
7
to
ON
with either
8 ON
for 10 Mbps or
8 OFF
for
100 Mbps. NOTE:
6
must also be
ON
when enabling LFD.
N O T E
When using the LFD feature, if the DIP switches are in any other
combination than listed above, the module may exhibit erratic behavior.
