AVIIVA® EM1
33
1043D - AVIIVA EM1 –04/11
e2v semiconductors SAS 2011
Name
Interface
Lock Access
Visibility
Description
DeviceTemperatureSelector
MainBoard
IEnumeration
U
R
E
Select the temp sensor location.
DeviceTemperature
IInteger - R E
Temperature measured
Standby
IBoolean U
R/W E
Enable/Disable the Standby mode
NON SFNC
StatusErrorHardware
IInteger - R E
Status bit for an Hardware error
NON SFNC
StatusWarningFfcOrBalanceUdf
IBoolean - R E
Warning for Underflow after FFC or
Balance
NON SFNC
StatusWarningFfcOrBalanceOvf
IBoolean - R E
Warning for Overflow after FFC or
Balance
NON SFNC
•
DeviceTemperature :
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 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
)
A standby mode, what for ?
The Standby mode stops all activity on the
sensor level. The power dissipation drops
down to less than 5W. 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 recovers in less than
1ms
to
send images again from the sensor.
But it’s necessary to grab an image of
about 100 lines because these first lines
after the Sensor Power down don’t have
a correct level (due to the re-
establishment of the black reference
level.
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
