R&S
TSMX-PPS2
Troubleshooting
Getting Started 1515.7236.02 - 02
42
8.6 Checking extern sensor signals
1. Check with u-center software whether the external sensor signals (speed and
direction) and the embedded gyroscope are being detected (see section
on page 35).
•
If speed signal is missing check whether the Sensor Cable is plugged in
and connected correctly to the vehicle signals (speed & direction). Maybe
check the outputted signal with an oscilloscope. If the Sensor Cable is
firmly fixed to the car and measuring of the signals is only possible on the
Sensor Cable connector (the pin out could be find in section
“Sensor cable
/ SENSOR IN”
on page 20).
Measuring direction:
Changing from forward to reverse gear has to be
combined with a change of the signal level (for example as a rule from 0 V
to 12 V, sometimes also reverse) between the DI and the
DIRECTION- pins.
Measuring speed:
When moving the vehicle, there should be a
continuous square-wave, sinus- or a triangle-shaped signal (differs from
car to car) with a frequency proportional to the driven speed between the
SPEED+ and the SPEED- pins.
•
If the gyroscope signal is missing please send the device to our support,
because greater damage could be happened to the device.
•
If all signals are displayed go on with next step.
2. Check position of installation.
•
The device has to be firmly fixed horizontal with the printed, brighter
chassis side up to the car chassis in a way that the device could not move
or turn (see section
“Placing the R&S TSMX-PPS2”
on page 15).
•
If the placement of the device is correct proceed with the next step.
3. Restore factory settings to exclude faulty settings (see section
Factory Settings”
on page 37). In this regard consider that the configuration is
stored into BBR/Flash (
set corresponding tick in the u-blox GPS
Configuration window!).
4. Check with u-center software whether the external sensor signals could now
be detected.
•
If the signals are available proceed with sensor calibration (see section
"ADR Calibration Status"
on page 36)
•
If the signals are still not present please contact the local R&S service.
