Fluke Biomedical RF303 - Manual (Page 29)

Installation, Setup, and Maintenance
Installation and Setup
2
2-5
Operating the Analyzer Using Battery Power
You can operate the Analyzer using either ac power or dc power. When you
power on the Analyzer with the supplied ac power cord installed and
connected to an appropriate ac power source, the Analyzer operates on ac
power. When you power on the Analyzer with the ac power cord disconnected,
the Analyzer automatically operates on battery (dc) power.
Note
The battery is a sealed lead-acid type. Do not attempt to replace the
battery. Return the Analyzer to a service center for replacement of the
battery.
The Analyzer contains an internal ac/dc converter. During ac power operation,
this converter assists in charging the battery, if it is not already fully charged.
If the battery is fully charged, it is held in a maintenance float mode.
If you remove the ac power cord while the Analyzer is powered on, the
Analyzer automatically resets in a battery-powered mode. The Analyzer can
operate on a fully-charged battery for approximately two hours. Battery age,
previous battery cycles, and Analyzer operating conditions all affect the actual
length of time that the Analyzer operates on battery power.
When the battery nears the end of its discharge cycle, the unit automatically
turns off to protect the battery from damage. This action is preceded by a
warning interval of about 5 minutes, indicated by a flashing red light of the
battery status indicator.
When the ac power cord is connected between the Analyzer and an ac power
source, and the Analyzer is not powered on, the battery charger is active.
However, instrument controls and measurement circuits do not receive power.
See Table 2-2, below for a summary of battery operating status under various
conditions.