Maximum Summit Remote - Manual (Page 6)

5
Installation
Trial wiring
You should do a trial wiring before running the wires through the walls. Perform the trial wiring in
the comfort of your home, garage, etc. This will ensure your confidence in the instruments’ opera-
tion. If you are using line extenders or, short haul modems, you should obtain them and any connec-
tors and wire before proceeding.
First we will wire a 2 conductor shielded cable for the link to a master.
Two conductor shielded cable has two insulated wires and one bare wire
for the shield. Connect the insulated wires to the signal ground and
transmit data terminals (see diagram). Next connect the other end of the
signal ground wire to the signal ground
terminal for the remote. Finally connect the
other wire to the receive data terminal of the
remote. In most cases you do not need to use
the shield wires. However if you are installing
in a very noisy environment you may need to
connect the shield wire to an earth ground. If you use an earth
ground you must only connect one end of the shield to earth
ground. Connecting both ends of the shield to earth ground will
create a ground loop, increasing the noise in the cable or in
extreme cases, possibly damaging the equipment. When using
multiple remotes, you can connect the shield wires together at
all the remotes in the middle of the chain, then connect either the
master or, the last remote end of the shield to earth ground.
When using line extenders or short haul modems, you will
probably need to make adapter cables that connect the terminal
strips to a DB-25 connector (see diagram). You will also need to
follow the manufacturers instructions for wiring the extenders/
modems together.
Lastly, connect a 2 terminal connector to the AC adapters 2-conductor
cable. The adapter is polarity sensitive so be sure to connect the wires as
shown in the diagram. If the master and remote are close to one another
you may be tempted to obtain and use one AC adapter for both units. Do
sive than cables designed for noisy locations like factories. If you are using multiple remotes the
cable length limits are for each segment of the daisy chain cabling. As an example, if you are using
cable rated for 100 feet, then you can use 100 feet for each segment of the cabling for a total distance
of 200 feet between the master and the second remote.
If you need to have a data link of longer than a few hundred feet, you should use line extenders
and/or short haul modems. Line extenders and short haul modems allow you to have Summits
connected by miles of wire. Many of these devices allow you to use existing runs of standard tele-
phone cable. If you use these devices you will probably need to buy standard DB-25 male connectors
or, some other connector, for the Summit side connection to the driver/modem.