Pub. 42004-735L2D
M
ODEL
LE300
S
ERIES
W
ALL
-M
OUNT
P
AGE
/P
ARTY
®
L
INE
E
XTENDERS
Page 9 of 53
p:\standard ioms - current release\42004 instr. manuals\42004-735l2d.doc
02/16
Page Line 50 kHz VLC Transmission
A pair of Model LE300 Line Extenders re-generates the 50 kHz VLC control signal between two
Page/Party
®
system cables. 50 kHz VLC signaling occurs on the page line and is typically used to alter the
speaker volume of Page/Party
®
stations equipped VLC receivers. VLC signals may also be used for other
on/off control functions on some Page/Party
®
systems. For proper operation, both line extenders must
have this feature enabled by closing DIP switch SW5 position two. Refer to Figure 7 for the location of
switch SW5 on the main PCBA and the table below for setting options.
Table 6. Page Line 50 kHz VLC Transmission Setting on Main PCBA
SW5-2
Page Line 50 kHz VLC Transmission
Open*
50 kHz VLC is disabled
Closed
50 kHz VLC is enabled
N
OTES
:
1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
N
OTE
:
FSK operation and VLC operation (described above) cannot be enabled at the same time.
FSK operation is only used with SmartSeries systems.
VLC operation is only used within NON-SmartSeries systems. If both 50 VLC and FSK are enabled
at the same time, neither feature will function correctly.
Page Line Ground Fault Detection
The Model LE300 Line Extenders provide page line ground fault detection on the local Page/Party
®
system cable. If multiple LE300s are connected to the same Page/Party
®
system cable segment, only one
page line ground fault detector may be enabled. A shorting clip setting at header P5 on the main PCBA
enables the page line ground fault detection. Refer to Figure 7 for the location of header P5 on the main
PCBA and the table below for setting options:
Table 7. Page Line Ground Fault Detection Setting on Main PCBA
P5 Shorting Clip Page Line Ground Fault Detection
Pins 1–2*
Page line ground fault detection is disabled.
Pins 2–3
Page line ground fault detection is enabled.
Removed
Page line ground fault detection is disabled.
N
OTES
:
1.
If connecting an LE300 to the same system cable segment as an ADVANCE Page/Party
®
Interface
(PPI) card, disable the LE300 page line ground fault detector. The PPI card contains the ground fault
detector. If both ground fault circuits are enabled simultaneously, intermittent SmartSeries FSK data
errors will occur between the PPI card and SmartSeries stations.
2.
Changes to this parameter take effect without cycling power.
3.
*Indicates default position.