iv
SAFETY PRECAUTIONS

Be sure to observe all these safety precautions.

■Please READ through this manual carefully. It will enable you to use the BHT and
CU correctly.
■Always keep this manual nearby for speedy reference.

WARNING Alerts you to those conditions which could cause seri-

ous bodily injury or death if the instructions are not
followed correctly.
CAUTION Alerts you to those conditions which could cause minor
bodily injury or substantial property damage if the in-
structions are not followed correctly.
Meaning of Symbols
A triangle ( ) with a picture inside alerts you to a warning of danger. Here
you see the warning for electrical shock.
A diagonal line through a circle ( ) alerts you to something you should not
do; it may or may not have a picture inside. Here you see a screwdriver
inside the circle, meaning that you should not disassemble.
A black circle ( ) with a picture inside alerts you to something you MUST
do. This example shows that you MUST unplug the power cord.
Strict observance of these warning and caution indications are a MUST for preventing
accidents which could result in bodily injury and substantial property damage. Make
sure you fully understand all definitions of these terms and related symbols given
below, before you proceed to the text itself.