Chapter 5 ________________________________________________________________ Operation
VAISALA ______________________________________________________________________ 181
The emulated Impulsphysik transmissometer SKOPOGRAPH II
“Flamingo” message is presented below:
"
S0TA" 935 2000 -87440 5300 > R0100 10 5 50 00 00 00 A0
-*$
-
--
--
-----
-
----
-
--------
-
------
-------
----------
-
---
-
---
-
----
-----
--------
-
--
---
¦ ¦¦ ¦ ¦ ¦ ¦¦¦¦¦¦¦¦ ¦ ¦ ¦ ¦_
Checksum, 2’s cmplmt.
¦ ¦¦ ¦ ¦ ¦ ¦¦¦¦¦¦¦¦ ¦ ¦ ¦
for all char’s
¦ ¦¦ ¦ ¦ ¦ ¦¦¦¦¦¦¦¦ ¦ ¦ ¦ ¦_
Status, not used
¦ ¦¦ ¦ ¦ ¦ ¦¦¦¦¦¦¦¦ ¦ ¦ ¦_
Baselength, m
¦ ¦¦ ¦ ¦ ¦ ¦¦¦¦¦¦¦¦ ¦ ¦_
Contrast threshold, %
¦ ¦¦ ¦ ¦ ¦ ¦¦¦¦¦¦¦¦ ¦_
Update time, s
¦ ¦¦ ¦ ¦ ¦ ¦¦¦¦¦¦¦¦_
Simulation Value, %
¦ ¦¦ ¦ ¦ ¦ ¦¦¦¦¦¦¦_
Test generator (
1
-on,
0
-off)
¦ ¦¦ ¦ ¦ ¦ ¦¦¦¦¦¦_
Test filter (
1
-on,
0
-off)
¦ ¦¦ ¦ ¦ ¦ ¦¦¦¦¦_
Transmitter (
1
-on,
0
-off)
¦ ¦¦ ¦ ¦ ¦ ¦¦¦¦_
1
st telegram after reset
¦ ¦¦ ¦ ¦ ¦ ¦¦¦_
R
emote/
L
ocal
¦ ¦¦ ¦ ¦ ¦ ¦¦_
BGL out of range (<, >)
¦ ¦¦ ¦ ¦ ¦ ¦_
MOR out of range (<, >)
¦ ¦¦ ¦ ¦ ¦_
Background luminance, cd m
-2
¦ ¦¦ ¦ ¦_
ln(E
t
) * 10
4
¦ ¦¦ ¦_
Visibility, m
¦ ¦¦_
Transmission, ‰
¦ ¦_
STILBUS II indication
¦_
Header
The total amount of characters in the message is 80. The transmission
times are: 2.7 s at 300 bps (10-bit char), 0.33 s at 2400 bps, 0.08 s at
9600 bps.
Message 9 - Service Raw Values
Message 9 offers a set of raw values. The contents of message 9 are
subject to change.
Message Sending Modes
Automatic Mode
In the automatic mode the LT31 system sends a predefined message at
selected intervals. The automatic and default polled message can be
defined with the
SET MESSAGE TYPE
command. For available
messages, see section Message Formats on page 161. The format of the
SET MESSAGE TYPE
command is presented below:
SET MESSAGE TYPE
Message_number
The following command selects message 2 as the default automatic
message:
SET MESSAGE TYPE 2