OM-550
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3.1.2 CONNECTING THE AC POWER ADAPTER
Plug the AC Power Adapter into an appropriate 120V AC (in North America) power
outlet. Insert the adapter's connector into the receptacle on the left side of the unit. The
OM-550 is now ready to operate on external power.
The OM-550 will operate without batteries but data may be lost if the power fails or the
AC Power Adapter is accidentally removed.
It is recommended when operating OM-550 the batteries are installed first.
Figure 2-18
For continued fire and electric-shock protection, use only the specified AC Power
Adapter.
3.1.3 CONNECTING THE DC POWER CABLE
Plug the large DC connector into a 12V DC cigarette lighter power outlet, whether in
the optional rechargeable battery pack or in a motor vehicle. Plug the small DC plug
into the jack on the left side of the OM-550.
For continued fire protection, use only the specified DC power cable which
contains a two-ampere fuse.