TECHNICAL DESCRIPTION AND OPERATING MANUAL ST131 <PIRANHA II> and ST131N
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1.6 POWER SUPPLY
1.6.1 Main unit
Power supply of the ST131 main unit is provided by means of six AA-type batteries (or rechargeable
batteries) or power adapter.
Completely filled icon
(position 11, Figure 14) corresponds to full capacity of the battery,
completely discolored and strikethrough image
corresponds completely discharged batteries.
It is preferable to use heavy-duty alkaline batteries.
Under average operating condition (backlight is switched on for 50% of time, volume level – 50%
of maximum level) hours of service of one set of batteries is not less than 5 hours at least.
It is possible to use only one battery compartment (three batteries). In this case the service time is
reduced to 1 hour.
To replace the batteries, please open the battery compartment covers with the wrench included
into delivery set. Replace the batteries observing polarity given at the bottom cover of the main unit.
1.6.2 UHF converter ST131.UHF
UHF converter is powered by two AA type batteries (or rechargeable batteries) or power adapter.
When the batteries are discharged the continuous lighting of the indicator «ON/LOW BAT» (position
3, Figure 4) will be replaced by blinking one time per second.
Service life of the device when using evidently new batteries of alkaline type should be at least two
hours.
To replace the batteries, please open the battery compartment covers and replace the batteries
observing polarity indicated at the bottom part of the battery compartment.
