MAIA M2
Quick User Guide
EOPTIS / SAL ENGINEERING
Page 11 of 15
MAIA M2
Rev.1.01 - 07/2019
Copyright © 2016-2019
The settings for the bit depth and the exposure target are kept when the camera is restarted and are visible on the LEDs
next to the button. During the setting of the parameters, the image acquisition is suspended. In order to set the
parameters it is necessary that there are no acquisitions in progress, i.e. that the FREERUN pin is low and that no triggers
are sent.
2.8
F
RONT LED
The two-color LED visible on the front part of the camera indicates the presence of the power supply, the acquisition
status and any errors.
Camera status
LED status
Camera OFF
OFF
Camera ready to acquire images
GREEN
Red pulse at any image acquired
RED PULSE
Memory full
RED
Error. Ex.: starting acquisition without SD card or camera receiving too frequent
triggers.
RED FLASH
Table 4. Front LED status.
2.9
I
NTERNAL CLOCK
The camera has an internal clock, powered by battery, which is used to attribute the time of saving the images on the
SD card. The clock is factory adjusted to UTC time. Battery life is estimated to be over 10 years from the moment of
production and its replacement requires the camera to return to the factory.
2.10
N
AMES AND FEATURES OF THE IMAGE FILES
The camera saves the image captured by the two sensors on the SD card in a single uncompressed file, with the ".Raw"
extension. The file format is a proprietary raw file, for which decoding it is recommended to use the supplied software.
The file name is constructed differently depending on whether the acquisition takes place in freerun mode or with
external trigger and a part of the name can be attributed by any external controller to synchronize the images with the
GPS logger. The files are placed in a folder named yyyymmdd (year, month, day), created when a new acquisition session
is activated.
An acquisition session begins with one of these events:
• The freerun mode is activated (by pressing the ACQ button or the FREERUN signal goes high)
• The camera receives the first trigger while the FREERUN signal is low (= external trigger mode enabled)
A subfolder with the name hhmmss (hours, minutes, seconds) is created in the session folder, which contains a
maximum of 1000 files. Exceeding 1000, another is created with new hhmmss.
The file name is in 8.3 format with the syntax yyyyyxxx.raw, where:
• xxx is a progressive 000-999 assigned by the camera to each save
• yyyyy is a value that in external trigger mode can be set by the controller by sending it to the serial line
immediately after each trigger pulse (from 00001 to 65535). If not received within the set times, it is set to 00000.
In freerun mode it is fixed at 00000.
When the camera operates in freerun mode in the absence of controllers and the acquisition takes particularly long
(over 16 minutes) to exceed 1000 files, the names of the files contained in the subfolders into which they are divided
are the same folder by folder. It is therefore necessary to be careful when copying the files to the PC and maintaining
the folder structure to avoid overwriting.
The size of the file varies according to the configuration of the sensors and the bit depth chosen.
