GAI-Tronics LE300-IP Page/Party Line Extender - Manual (Page 24)

Pub. 42004-488C
M ODEL LE300-IP P AGE /P ARTY
®
L INE E XTENDER P AGE 21 of 68
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The LVDS “out” port is disabled unless the line extender is transmitting an LVDS signal to another line
extender’s LVDS “in” port. Switch SW3 position 4 enables the LVDS “out” port. Refer to Figure 6 for
the location of SW3 on the Main PCBA and Table 23 below for setting details.
Table 23. LVDS “OUT” Setting on Main PCBA
SW3-4 Enable/Disable LVDS “OUT” Port
Open* LVDS “out” is disabled.
Closed LVDS “out” is enabled.
N OTES : 1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
NOTE
Do not connect LVDS “in” to LVDS “out” on the same LE300-IP Line Extender.
Doing so creates a feedback path that usually results in (extremely loud) oscillations on the page line, all
party lines, and possibly the contact outputs.
LVDS Port Indicators
Each LVDS port has two LEDs. The green LED is ON when the LE300-IP detects a signal connection
from the other LE300-IPs connected to that port. The yellow/orange LED is ON when the LE300-IP
detects page line data (SmartSeries FSK or 50 kHz VLC) on the LVDS port.