User manual

4. Professional Installation

4.1 Introduction

The Shark is intended for installation by a trained professional. Since the types of

equipment The Shark can be connected to can vary widely, it is not the scope of this

manual to explain installation for every specific use scenario. Therefore the instructions

are generalized to try and make it easy for anyone with a serial cable replacement

application to use The Shark.

If it is not clear in how to use The Shark for your particular application, please call

Stevens technical support at 800-452-5272. A support technician or engineer will gladly

help you with your Shark installation.

4.2 Connecting the Power

The Shark comes with a 6-ft external power cable. For a fixed installation, this power

cable will need to be installed securely. Connect one end of this cable to the Shark’s

power jack and the other splayed end to a DC source between 6 and 15 volts (see section

2.6). The source of this DC power will depend on your particular application. Some

remote data collection monitoring systems have the loggers and other equipment already

connected to a +12V battery, which is then recharged by a solar panel. Simply connect

The Shark to this same power source. Another option is to connect to the +/- screw

terminals of an AC adaptor if an AC wall socket is the source of power. Once again, if

help or advice is needed about supplying power, please call Stevens technical support.

4.3 Connecting to RS-232 Equipment

4.3.1 DTE vs. DCE

There is a lot of confusion about connections between RS-232 equipment. Much of this

confusion arises out of the terms DTE (Device Termination Equipment) and DCE

(Device Communication Equipment) and when to use a null modem cable or adapter vs.

when to use a straight cable, adapter or gender changer.

This rule of thumb will make it easier to remember:

“DTE connect directly to DCE without a null modem. Like equipment requires a null

modem”