CRUISING ELECTRONICS E-Meter, Руководство пользователя

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RS-232 Warning
When using an RS-232 equipped version of Your Meter in an
electric vehicle which has a floating motive battery negative, re-
member that Pin #5 of the DB-9 connector coming out of the
back of Your Meter is connected to the motive battery negative.
This normally causes no problem when used with our Memory
Modules or with laptop computers. However, if you plug the
DB-9 RS-232 output into a computer with a metal chassis then
motive battery negative will be connected to the chassis of the
computer.
THIS EXPOSED BATTERY NEGATIVE MAY BE
HAZARDOUS, AND POSSIBLY FATAL IF YOU
HAVE A HIGH SIDE MOTIVE PACK FAULT.
We strongly recommend that when using a Memory Module or
computer to log data, you minimize the hazard by installing an
RS-232 Opto-Isolation Module. One such module is available
through OMEGA ELECTRONICS (Model 268 cost $126).
Omega's phone number is 1-800-848-4271.
Please note you will also have to purchase DB-25 to DB-9 adapt-
ers as Model 268 uses DB-25 connectors. Be certain you pur-
chase straight through adapters, not the null modem type!