8
SW1 is a four-position switch used to select the following operational characteristics. See figure
below for an illustration of the switch.
Three Wire / Four Wire (SW1-1).
This switch selects whether the XALIC is connected to
a three-wire or four-wire loop. ON equals three-wire; OFF equals four-wire. (When
operating in three-wire mode, the command line is absent.) Three-wire can only be selected if
no
XA output-type devices are connected to the loop.
Master / Slave Operation (SW1-2)
. This switch selects whether the XALIC is operating
as the master or slave. ON equals master; OFF equals slave.
Scan Rate (SW1-3).
This switch selects the number of clock pulses in a complete scan of
the XA loop. ON equals 256 pulses; OFF equals 257 pulses. Set this switch to 256 pulses for
all Autocall panels except the AL1500 and AC-II which require the 257-pulse setting.
1
2
3
4
On
Off
Figure 3. Location of SW1
Jumpers P1 and P2 select the power and ground source for the XALIC. Set these jumpers as
follows, depending on whether you are connecting AUX power or Signal Power (via PDI) to the
XALIC.
Signal Power.
Place Jumpers P1 and P2 in the rightmost positions (covering pins 1 and 2)
to select the Signal Power as the power and ground source for the XALIC. When these
jumpers are installed in this manner, the XALIC receives both power and ground via the PDI.
AUX Power
. Place Jumpers P1 and P2 in the leftmost positions (covering pins 2 and 3) to
select AUX power as the power and ground source for the XALIC. When these jumpers are
installed in this manner, the XALIC receives both power and ground via the AUX power
source.
3 2 1
Jumpers Right
for Signal Power
Jumpers Left
for AUX Power
Figure 4. Location of Jumpers P1 and P2
Continued on next page
Hardware Configuration,
Continued
Setting XA Loop
Options (SW1)
Setting Power and
Ground Jumpers
SW1
P2
P1
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Summary of Contents for 4100-3115 XALIC
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