Preparing for use
R&S
®
TSMA6B
32
User Manual 4901.4026.02 ─ 01
5.7
Connecting test mobile phones
When you connect a test mobile phone to a USB port for the first time, the installation
of the appropriate drivers is mandatory.
Currently following driver is available.
●
Samsung USB driver
For information how to connect Qualcomm based mobiles and required driver updates,
see
https://www.rohde-schwarz.com/driver/tsma6/.
.
For information how to connect other test mobiles phones and install appropriate driv-
ers, refer to related manuals (e.g. R&S ROMES User Manual, R&S SmartBenchmarker
User Manual).
5.8
Calibrating GPS for dead reckoning
The following steps are necessary to enable untethered dead reckoning with the inte-
grated receiver (see
on page 14) of the R&S TSMA6B.
1. Mount the R&S TSMA6B device fixed to the frame of a car.
2. Power on the R&S TSMA6B device.
3. Activate "Dead Reckoning" in the used software (for details, refer to R&S ROMES,
R&S NESTOR or R&S ViCom documentation).
4. Wait until the used software reports a "3D fix" (time may vary depending on the
configured GNSS).
5. To calibrate the instrument, the following driving procedures have to be performed
in a safe environment.
a) 720 degrees right turn
b) 720 degrees left turn
c) Drive a straight line with a velocity exceeding 40 km/h.
After finishing the calibration, the used software should report a fix state "GPS+DR" or
"3D+DR", in case satellite reception is lost the fix state will change to "DR only".
If using "DR only", the accuracy of the reported position will decrease over time, if it
falls below a certain threshold the receiver will report the state "No Fix".
The GPS calibration is saved in the module. Whenever the device is switched off, the
calibration procedure must be repeated for the next usage of dead reckoning.
Calibrating GPS for dead reckoning
