natus Xltek Trex HD, Руководство пользователя и обслуживания

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User & Service Manual XLTEK Trex HD Amplifier
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12. Guaranteeing Sufficient Battery Power
12.1. Battery Power with AA Batteries (only)
The Trex HD is powered by two AA alkaline batteries for ambulatory recordings. An optional power pack
is available to extend recording time without the need to replace batteries. For more information, see
Battery Power with AA Batteries and Power Pack .
In order to guarantee

Sufficient battery power for 24 hours of consecutive ambulatory recording, and

Sufficient on-board storage for a 96-hour recording
Then:
a. All DC channels, differential channels 2 to 4, pulse rate (PR) and oxygen saturation (OSAT) must
be turned off on the acquisition station;
b. Sampling frequency must be set to 200 H z;
c. Two new AA batteries must be inserted
This will ensure that your ambulatory amplifier has enough onboard memory and battery power to record
for the duration of the study. It is recommended that batteries be replaced every 24 hours with a set of
new AA batteries.
NOTES: It is strongly recommend that you use major brand name AA alkaline
batteries such as Duracell® Coppertop®, Duracell Procell® or equivalent. Do not use
rechargeable batteries.
With a Pulse Oximeter sensor connected to it, the Trex HD can run for 17 hours with a
set of new AA batteries recording to internal memory.
NOTES: When the settings described in this section are applied, it is recommended
that patients be advised to replace the internal batteries according to a fixed schedule:

Standard ambulatory EEG studies: Every 24 hours (at the same time once a
day)

PSG studies with pulse oximeter sensor connected: Every 12 hours (twice a
day - once in the morning and again at night)