Installation and Operating Manual
Stratotimer ST3
31-20-01
Page 2
DESCRIPTION AND OPERATION
Revision: 1.00
12/06/2020
2. Description
Refer to Figure 1.
The Stratotimer ST3 is a digital multifunction clock, designed to be easily installed in an
instrument panel of an aircraft using a 3-ATI ARINC square clamp. Connection to a power supply
is with a 26-pin, military grade connector on the rear of the device.
The Stratotimer ST3 is a line-replaceable unit (LRU).
Time and timer functions are displayed on a TFT display, with light digits on a dark background
(negative image).
The different display options can be changed using an on-screen menu with four push-buttons
and a push / turn control knob.
The Stratotimer ST3 has the following display options:
•
Universal Time Coordinated (UTC) or Local Time (LT)
•
Date
•
Flight Timer (FT)
•
Elapsed Timer (ET) or Elapsed Timer Down (ETD)
•
Maintenance Time in Hours (MTH)
•
Alarm indicator for Elapsed Timer Down mode
•
S-video
The display of the Stratotimer ST3 has three modes:
•
Day mode (colour, high light intensity)
•
Night mode (colour, low light intensity)
•
NVIS green
The brightness of the display can be either adjusted automatically with two light sensors or
adjusted manually.
An internal battery makes sure that the Stratotimer ST3 continues to keep time when aircraft
power is not available.
The battery can be easily replaced by opening a cover at the rear of the Stratotimer ST3 (refer to
Maintenance Practices, page block 201).
A USB connector can be accessed by opening the same battery access cover. The USB
connector is for the use of approved service centres only, for connecting maintenance software.
Capacitors make sure that the Stratotimer ST3 continues to function during momentary power
disruptions.
An identification label is attached to the top of the Stratotimer ST3. Refer to Description and
Operation, section 3.3 for details.
Two warranty-void labels are attached to the outside of the Stratotimer ST3. The warranty-void
labels must not be removed.
Refer to Description and Operation, section 4, for a detailed description of how to operate the
Stratotimer ST3.
Содержание STRATOTIMER ST3
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