User's Manual
C-1
AppENdIx
C
A
CTIWATCH
H
ARDWARE
All communication with Actiwatch is accomplished using an ActiReader that
is connected to a computer via an RS-232 Serial Port. This connection to the
computer supplies power and communication instructions. Settings made prior to
the start of data collection, as well as all data values, are communicated through
this device. The Actiwatch and ActiReader communicate using short range radio
telemetry. Readers are not “unit specific,” i.e., any Actiwatch may communicate
with any ActiReader or Actiwatch Reader.
There are four models of Actiwatch currently available:
Actiwatch®-64
Actiwatch-64 contains 64 KB of on-board memory. Chronobiological studies
can be conducted over several weeks because intervals longer than five
minutes may be selected. An eventmarkerbuttonallowssubjectstomark
times at which important events occur.
Actiwatch®-16
Similar to the Actiwatch-64, but Actiwatch-16 has 16 KB of memory.
Actiwatch®-L
Actiwatch-L measures activity and ambient light exposure (illuminance).
Actiwatch-L does not have an event marker button.
Actiwatch®-Score
Actiwatch-Scoremeasuresactivityandsubjectiveweightingofspecifictimes
or events.