AVIIVA® EM2-EM4
24
1013D - AVIIVA EM2/EM4 02/11
e2v semiconductors SAS 2011
5.3.3
Status, Temperature & Standby
It can be accessed in CommCam software in the “Status” section :
•
Temperature
(
Temperature
) : Get internal Temperature
Read function : “
r temp
”;
Return by the camera : Temperature in Q10.2 format (8 bits 2 bits below comma). Value is
between -512 to 511 in °C.
The temperature Sensor is placed on the CCD driver Pcb Board, close to the Sensor itself.
The Temperature displayed is one of the highest possible in the Camera. Then it can be monitored to
activate the standby mode, in case of too high temperature (see insert below)
The limits are always referenced by the internal temperature sensor. (
cf APPENDIX B : Thermal
Management
)
•
Standby Mode
(
Standby
) : Activation of the Standby mode of the Camera
Read function : “
r stby
”;
Returned by the camera : Boolean.
0 : Disable Standby mode (False)
1 : Enable stanby mode (True)
Write function : “
w stby <val>
”; <val> is 0 or 1.
A standby mode, what for ?
The Standby mode stops all activity on the
sensor level. The power dissipation drops
down to less than 4W. During the standby
mode, the Camera carry on sending black
images through the CameraLink outputs in
order to avoid any disruption in the
application system.
Once the Standby mode turned off, the
Camera recover in less than
1ms
to send
images again from the sensor.
Internal Temperature
25
30
35
40
45
50
55
60
65
70
75
0
5
7
10
20
30
40
50
60
70
80
90 10
0
11
0
12
0
13
0
14
0
Time (mn)
°C
Standby Off
Standby On
