Error Bits - Vaisala MD30 Reference Manual

Reference Guide

Error bits

Error bits indicate error situations in the unit or in communication. The erroneous bits are reported in
the
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Error is indicated by setting bit to 1.
Table 4 Error messages
Message
1)
Bit
0 Surface temperature sensor
error
1 Air temperature error
2 Relative humidity error
3 Window contamination alarm
2)
4 Laser status error
5 Laser heating error
6 Excessive ambient light
detected
7 Receiver error
8 Signal level out of range, gain
adjustment limit reached
9 Received signals contain too
much noise
10 Optical measurement data
timeout
11 Low input voltage
12 High input voltage
13 Flash failure status
14 Internal temperature too high
15 Reference status:
0 = OK
1 = Invalid or not set
16 Factory calibration status:
0 = OK
1 = Not calibrated
17-31 Reserved for future use
1) Bit is shown in MD30 interface response data message, not in RoadAI.
2) Reported by MD30 models that have the window contamination feature.
10
, , and
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Probable cause
Cables may be loose,
damaged, or disconnected.
Mobile sensor window is
heavily contaminated.
-
Sunlight is reflected from road
surface to mobile sensor.
−
−
−
−
Incorrect operating voltage.
-
Mobile sensor overheated.
−
−
−
messages.
Actions
Check cables and connectors.
If the problem persists, replace
mobile sensor.
Clean the window.
Restart mobile sensor.
Move vehicle or reposition
mobile sensor.
Restart mobile sensor.
Check installation height and
angle of mobile sensor.
Check that mobile sensor is
firmly attached to vehicle.
Restart mobile sensor.
Check operating voltage.
Restart mobile sensor.
Disconnect mobile sensor from
power supply.
Verify installation with
reference plate and adapt
mobile sensor to road surface
types.
Return mobile sensor to
Vaisala.
−
M212309EN-D