Chapter 4 _________________________________________________________________ Operation
VAISALA ________________________________________________________________________ 83
The total amount of characters in the message is 33. The transmission
times are: 1.3 s at 300 bps (10-bit char), 0.17 s at 2400 bps, 0.04 s at
9600 bps.
The binary status is in hexadecimal notation. The status bits emulate the
MITRAS status as follows.
Transmitter
status correspondence between MITRAS and FS11:
BIT
MITRAS
FS11
BIT.0=1
MEAS MODE
ON
II
BIT.1=2
CONT/OTHER
OFF
BIT.2=4
OPTICAL SURFACE
Window contamination
BIT.3=8
POWER SUPPLY
Power supply failure
BIT.4=1
HEATING
OFF
I
BIT.5=2
FLASH LAMP
LED failure
BIT.6=4
BL METER
BL sensor status (ON/OFF)
BIT.7=8
MEASUREM. LOOP
SIGNAL
OFF
Receiver
status correspondence between MITRAS and FS11:
BIT
MITRAS
FS11
BIT.0=1
MEAS MODE
ON
IV
BIT.1=2
CONT/OTHER
Any other FS11 alarm
BIT.2=4
OPTICAL SURFACE
OFF
BIT.3=8
POWER SUPPLY
OFF
BIT.4=1
HEATING
OFF
III
BIT.5=2
CALIBRATION
Receiver saturated
BIT.6=4
TEST
OFF
BIT.7=8
CONSISTENCY
OFF
For example, the status 4101 means that
I
4 = BL sensor ON
II
1 = ON
IV
1 = ON
In other words, LM21 Background Luminance Sensor is set as the
background luminance sensor.
