14 |
P a g e
Powering the Unit
Once the NID and DID are set and the Antenna and Probe are installed the ZW -ED
may be powered on.
The ZW-ED is powered using low cost Alkaline C cell batteries, the external M8
connector or both. The ZW-ED automatically switches from the internal batteries to the
external power if available. If the external power is removed, the ZW -ED switches back
to the internal batteries.
Figure 3.2
–
Battery Installation
Batteries
To install the batteries, open the ZW-ED and unscrew the lid screw using a Philips
head screwdriver. The battery orientation is marked on the battery holders and is shown
in
Figure 3.2
. Install the supplied Alkaline C Cell batteries as indicated.
To remove the batteries, insert a screw driver under the battery and gently loosen it.
Remove the battery on the right first to make room to remove the remaining battery.
Caution:
Use only 1.5V alkaline batteries in the ZW -ED. Other battery
chemistries may damage your ZW-ED or lead to reduced battery life.
Coin Cell
The ZW-ED comes with a CR2032
Lithium Coin cell battery pre-installed.
This battery keeps the real time clock for
the ZW-ED running even when the unit is
not powered and has an expected life time
of more than 10 years under room
temperature conditions. If it needs to be
replaced, carefully remove the battery
from the holder.
Caution:
Do not use conductive
pliers or other grasping tools that
may short the battery terminals.
Figure 3.3
–
Coin Cell Holder
