Bosch DDU 7, Manual

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114 en | Recording and Telemetry Display Unit DDU 7
04.02.2019 | V 02 | Manual Bosch Motorsport
6. Click ‘OK’ when done.
Notice!
If no condition is defined or condition is ‘false’, measurement channels are recorded at the
value chosen in ‘Rate’.
If the condition is ‘true’, measurement channels are recorded at the value chosen in ‘True
rate’.
Using fast block/slow block transmission
DDU 7 telemetry uses available bandwidth of Telemetry Unit FM 40 (19,200 baud -> approx.
1,700 bytes/s). The bandwidth has to be divided into channel information to be transmitted
high-frequently and low-frequently using the ‘fast/ slow block’ setting.
Channels are grouped into 8 blocks which are transferred each cycle:
–
Fast block (Block 1) is transferred every cycle and used for a high-frequent transmission
of channel information (e.g. speed, rpm).
– Slow blocks (Block 2…n) are transferred every n-th cycle and used for a low-frequent
transmission of channel information (e.g. tire pressure, oil temperature).
Transmission Scheme
If the maximum bandwidth of a block is reached, a warning will be displayed. To fix this
problem you can view the allocation of the channels and data rate in the ‘Statistics’ tab of the
Main Area. See chapter ‘
Recording statistics, page 115 ’ for more information.
13.2.1 Adding a recording
DDU 7 supports up to two independent recordings.
To add a recording, select ‘Add Recording’ from the context menu of the Logger in the DDU 7
Project Tree.
Maximum two recordings are possible. In the device software the 2nd recording is reserved
for scruteneering data. This recording is invisible (protected).
13.2.2 Adding a recording group
Recording channels can be grouped.
To add a new group, select ‘Add group’ in the context menu of the recording. The groups can
be renamed to ‘Gearbox’, ‘Aero’, ‘Engine’, etc.
13.2.3 Global settings
To display the global DDU 7 settings, select the ‘Settings’ Tab.