Bosch C 70 User manual

Data Logger C 70
Manual
Version 1.1 26/09/2019

Content
ii/112 Data Logger C 70 Manual Bosch Motorsport
Content
1 Onboard Network Concept............................................................................................................................................ 4
2 Communication channels............................................................................................................................................... 5
3 Preparation...................................................................................................................................................................... 6
4 Power Supply .................................................................................................................................................................. 7
5 Analog and Frequency Inputs ....................................................................................................................................... 8
5.1 Analog inputs......................................................................................................................................................................................................... 8
5.2 Configuring inputs ............................................................................................................................................................................................... 9
5.3 Configuring computed sources ...................................................................................................................................................................... 23
5.4 Hysteresis................................................................................................................................................................................................................. 24
6 Online Measurement ...................................................................................................................................................... 28
6.1 Setting up an online measurement............................................................................................................................................................... 28
6.2 Online calibration of measurement channels............................................................................................................................................ 33
6.3 Online calibration of multipoint adjustment channels .......................................................................................................................... 35
7 Error Memory .................................................................................................................................................................. 37
7.1 Error memory representation in RaceCon .................................................................................................................................................. 37
7.2 Information on errors available from the error memory ...................................................................................................................... 39
7.3 Analog Input Diagnosis...................................................................................................................................................................................... 43
8 Technical Data................................................................................................................................................................. 45
9 Disposal............................................................................................................................................................................ 49
10 Mechanical Drawing ....................................................................................................................................................... 50
11 Starting up....................................................................................................................................................................... 51
11.1 Before starting ....................................................................................................................................................................................................... 51
11.2 Feature activation................................................................................................................................................................................................. 55
11.3 First recording (Quick Start) ............................................................................................................................................................................. 57
11.4 Set time and date ................................................................................................................................................................................................. 60
12 CAN Bus ........................................................................................................................................................................... 62
12.1 CAN bus trivia ........................................................................................................................................................................................................ 62
12.2 CAN input................................................................................................................................................................................................................ 63
12.3 CAN output............................................................................................................................................................................................................. 68
12.4 Multiplexer .............................................................................................................................................................................................................. 70
13 Recording......................................................................................................................................................................... 73
13.1 Features.................................................................................................................................................................................................................... 73
13.2 Configuration of recordings............................................................................................................................................................................. 73
13.3 Recording data on USB device........................................................................................................................................................................ 78
14 Lap Trigger ...................................................................................................................................................................... 83
14.1 Lap trigger (timing beacon).............................................................................................................................................................................. 83
14.2 Counting outing/laps/fragments ................................................................................................................................................................... 90
14.3 Lap timing................................................................................................................................................................................................................ 91
14.4 Segment timing..................................................................................................................................................................................................... 93
14.5 Countdown timer ................................................................................................................................................................................................. 94

Content
Bosch Motorsport Data Logger C 70 Manual iii/112
15 Predated Laptime............................................................................................................................................................ 95
15.1 Setting up the predated laptime.................................................................................................................................................................... 95
15.2 Functionality and channel outputs ................................................................................................................................................................ 95
16 GPS Sensor....................................................................................................................................................................... 96
16.1 GPS (Global Positioning System).................................................................................................................................................................... 96
16.2 Protocol.................................................................................................................................................................................................................... 96
16.3 Sensor recommendation ................................................................................................................................................................................... 96
16.4 Measurement labels ............................................................................................................................................................................................ 99
16.5 GPS troubleshooting........................................................................................................................................................................................... 100
17 Firmware .......................................................................................................................................................................... 102
17.1 Firmware and configuration............................................................................................................................................................................. 102
17.2 Firmware update................................................................................................................................................................................................... 102
18 Cloning the Unit.............................................................................................................................................................. 105
19 Fuel Consumption Calculation ...................................................................................................................................... 107
19.1 Setting up fuel consumption calculation and tank management..................................................................................................... 107
19.2 Fuel consumption diagnosis/counter reset................................................................................................................................................ 108
19.3 Example .................................................................................................................................................................................................................... 109
20 RaceCon Shortcuts.......................................................................................................................................................... 110

1 | Onboard Network Concept
4/112 Data Logger C 70 Manual Bosch Motorsport
1 Onboard Network Concept
G
Engine_GND
GND_Starpoint
Chassis
KL31
LS_GND_1
LS_GND_2
Main
Switch
UBAT
Star connection
(term30) positive terminal
Electric Loads
IGN-
Switch
KL15
SENSPWR5
SENSGND
active
Sensor
ANA_IN(xx) NTC
Sensor
ANA_IN(xy)
switched pos. terminal
Star connection
dig. sensors
(e.g. wheelspeed)
µC
As short as
possible
SENSPWR10
UBATT_FUSE
KL30
LS_SWITCH1…4
Bosch Motorsport
diagnosis connector
PC
Device
NOTICE
This schematic is not device specific, please see the section “Technical Data for the spe-
cifications of your device.

Communication channels | 2
Bosch Motorsport Data Logger C 70 Manual 5/112
2 Communication channels
CAN bus
The C 70 has two CAN buses configurable as input and output. Different baud rates are
selectable. Please note that the C 70 does not contain any CAN termination resistors. Thus
the CAN termination resistors need to be integrated into the wiring loom.
Ethernet channels
The C 70 has one 100 MBit full duplex Ethernet communication ports. The port is intern-
ally connected with an Ethernet switch. The Ethernet ports have 'cable auto crossover'
functionality.
RS232 ports
The C 70 has two RS232 serial ports. Baud rate for both ports is programmable. RS232
port 1 is reserved for online telemetry, port 2 can be used for reception of data from a
serial GPS receiver.
Vehicle diagnosis connector
The Bosch Motorsport vehicle diagnosis connector is used as a standard interface to con-
nect the vehicle to a PC e.g. via a MSA-Box II. Loom connector: AS0-12-35SN
Pin Name Description Used for C 70
Pin 1 Terminal 30 Permanent positive +
Pin 2 Terminal 15 Switched positive +
Pin 3 Terminal 31 GND +
Pin 4 CAN High Diagnostic CAN bus
Pin 16 CAN Low Diagnostic CAN bus
Pin 10 K-Line ECU diagnosis
Pin 8 Ethernet RxD + Ethernet interface +
Pin 9 Ethernet RxD - Ethernet interface +
Pin 11 Ethernet TxD + Ethernet interface +
Pin 12 Ethernet TxD - Ethernet interface +
Pin 22 Screen Cable screen +

3 | Preparation
6/112 Data Logger C 70 Manual Bosch Motorsport
3 Preparation
Use the C 70 only as intended in this manual. Any maintenance or repair must be per-
formed by authorized and qualified personnel approved by Bosch Motorsport.
Operation of the C 70 is only certified with the combinations and accessories that are spe-
cified in this manual. The use of variant combinations, accessories, and other devices out-
side the scope of this manual are only permitted when they have been determined to be
compliant from a performance and safety standpoint by a representative from Bosch
Motorsport.
Read the manual carefully and follow the application hints step by step. Do not hesitate to
contact us, contact data can be found on the last page of this document.
Important information on Electromagnetic Conformity
To avoid unwanted interference with the environment (people, animals, electronic devices)
or unwanted harm to the environment, it is mandatory that the user of the C 70 carries
out an appropriate analysis to determine the electromagnetic interaction the C 70 may
have with its individual installation environment.
Disclaimer
Due to continuous enhancements, we reserve the rights to change any illustrations, pho-
tos and technical data within this manual.
Please retain this manual for your records.
NOTICE
In this document, all screenshots are created by way of example for a
display. Please consider this and replace the product names with the
name of your device.

Power Supply | 4
Bosch Motorsport Data Logger C 70 Manual 7/112
4 Power Supply
Please ensure that you have a good ground installation. That means:
– A ground that has a solid, low resistance connection to the negative battery terminal
– Connection should be free from dirt, grease, paint, anodizing, etc.
– Use large diameter wire
– More metal-to-metal contact is better!
The following notations for power signals are used:
– KL 15 is a switched battery rail controlled by the IGN-switch
– KL 30 is an unswitched battery positive rail (same as battery positive terminal)
– KL 31 is an unswitched ground rail (same as battery negative terminal)
Be careful to observe current limits of wires and connector pins!

5 | Analog and Frequency Inputs
8/112 Data Logger C 70 Manual Bosch Motorsport
5 Analog and Frequency Inputs
Analog inputs
– 0 to 5 V
– 12 bit A/D converter
– Switchable 3.01 kOhm pull-up resistor
– 10 kHz acquisition rate, up to 1 kHz recording rate
– Linear phase digital filter
Frequency inputs
– 5 V Hall-effect type, 2.5 V trigger level (DF11 input with current interface or 5VHall-
effect input with 2.5 V trigger level)
– 20 kHz max. frequency
– 10 ms measurement window
5.1 Analog inputs
5.1.1 Measurements channels
For each analog channel, several ‘subchannels’ are available.
Measurement labels with the characters ‘raw’ show the exact values in mV.
Measurement labels with the characters ‘_fi’ show filtered values.
The word ‘name’ in the table is a placeholder for the channel’s name.
Measurement label Function
raw_name mV value of sensor
raw_name_fi Filtered mV value of sensor
name Physical value of sensor
name_fi Filtered physical value
Filtered channels are routed through digital low pass filters:
– C 70 uses A/D converter oversampling and digital filtering to recording rate
– Digital filters eliminate ‘out-of-band’ noise
– Cut-off frequency automatically adjusted to recording rate
– Linear phase – no signal distortion
– Latency compensation – no filter delay in recorded data

Analog and Frequency Inputs | 5
Bosch Motorsport Data Logger C 70 Manual 9/112
5.2 Configuring inputs
5.2.1 Configuring a predefined Bosch sensor with the
'Bosch Sensor Wizard'
1. Click on ‘Measurement Sources’ in the Toolbox.
2. To expand the list of ‘I/O Channels’, click on ‘+’ in the C 70 Project Tree.
3. Drag the “Bosch Sensor Wizard” from the Toolbox and drop it on the desired analog
input channel in the C 70 Project Tree.
Drag + Drop
The “Bosch Sensor Wizard” opens.

5 | Analog and Frequency Inputs
10/112 Data Logger C 70 Manual Bosch Motorsport
1st: Choose the
sensor´s category
2nd: To narrow your
choice, choose a
type
3rd: Select the
exact type
Opens sensor´s
datasheet
These calibration
values will be used
4. Click ‘Finish’ when done.
The “Create channel” window opens.
5. Enter the channel name and description.
6. Click ‘Ok’ when done.
The channel is inserted into the C 70 Project Tree.
Channel is linked
to ANA03
Input pin Pull-up
resistor is activated
Calculation of
physical value with
characteristic curve
Available measurements for channel:
Measurement label Function
raw_name mV value of sensor
raw_name_fi Filtered mV value of sensor
name Physical value of sensor
name_fi Filtered physical value

Analog and Frequency Inputs | 5
Bosch Motorsport Data Logger C 70 Manual 11/112
5.2.2 Configuring a generic linear sensor
Example: Acceleration sensor 5 g
– From sensor data sheet - operating characteristics:
– Sensitivity 400 mV/g, Offset 2,500 mV
– The sensor has a linear output signal with sensitivity and offset
1. Click on ‘Measurement Sources’ in the Toolbox.
2. To expand the list of ‘I/O Channels’, click on ‘+’ in the C 70 Project Tree.
3. Drag the “Sensitivity/Offset” analog signal source from the Toolbox and drop it on the
desired analog input channel in the C 70 Project Tree. A “Sensitivity/Offset Wizard”
opens.
4. To activate the internal pullup-resistor, check the box. The internal pullup-resistor is
used to get a 5 V signal at the analog channel of the C 70. It allows you to use a push-
button. The fixed value of the internal pullup-resistor is 3,010 Ohm. If using an addi-
tional external pullup-resistor, set up the overall resistance.
5. Click ‘Next’ when done.
The second part of the “Sensitivity/Offset Wizard” opens.

5 | Analog and Frequency Inputs
12/112 Data Logger C 70 Manual Bosch Motorsport
Physical
(channel)
value
Choose unit
group and unit of
physical value
Enter values from
sensor datasheet
Electrical (pin) value
6. Click ‘Next’ when done.
The third part of the “Sensitivity/Offset Wizard” opens.
Physical limits
of channel
Enter physical
limits of the sensor
Choose data type
of the measurement
variable
Check box to enable
online calibration of
offset and enter
desired physical
offset value
Enter name to
automatically create
a new measurement
sheet
NOTICE
Working with automatically created measurement sheets is ex-
plained in chapter ‘Setting up an online measurement [}28]’.
7. Click ‘Finish’ when done.
8. Enter a channel name and a description.
9. Click ‘OK’ when done.
The channel is inserted into the C 70 Project Tree.

Analog and Frequency Inputs | 5
Bosch Motorsport Data Logger C 70 Manual 13/112
Input pin Pull-up
resistor is
activated
Sensivity and
Offset value
for sensor
Adjustment
is enabled
Channel is linked
to ANA04
Pin Diagnosis
Name and
Description
editable
Available measurements for channel:
Measurement label Function
raw_name mV value of sensor
raw_name_fi filtered mV value of sensor
name physical value of sensor
name_fi filtered physical value
5.2.3 Configuring a generic nonlinear sensor
Example: Thermistor 5 kOhm
– From sensor data sheet - resistance values over temperature:
– The sensor has a nonlinear behavior
– Use characteristic curve for linearization
– Input voltage is the ratio between pull-up resistor and thermistor
Pin
Thermistor
+5V
3 kOhm
1. Click ‘Measurement Sources’ in the Toolbox.
2. To expand the list of ‘I/O Channels’, click on ‘+’ in the C 70 Project Tree.
3. Drag the “Characteristic Curve” analogue signal source from the Toolbox and drop it
on the desired analogue input channel in the C 70 Project Tree.

5 | Analog and Frequency Inputs
14/112 Data Logger C 70 Manual Bosch Motorsport
Drag + Drop
A “Characteristic Curve Wizard” opens.
4. To activate the internal pull up-resistor, check the box. The C 70 pull up-resistor is
used to get a 5 V signal at the analogue channel of the C 70. It allows you, to use a
push-button. The fixed value of the internal pull up-resistor is 3,010 Ohm. If using an
additional external pull up-resistor, set up the overall resistance.
5. Click ‘Next’ when done.
The second part of the “Sensitivity/Offset Wizard” opens.

Analog and Frequency Inputs | 5
Bosch Motorsport Data Logger C 70 Manual 15/112
Physical
(channel)
value
Choose 'Ohm' to
enter datasheet
values directly.
Select physical
unit.
Enter resistance/
temperature pairs
from sensor data-
sheet here (the
3.01 kOhm pullup-
resistor is auto-
matically taken
into account)
6. Click ‘Next’ when done.
The third part of the “Characteristic Curve Wizard” opens.
Physical
limits of
channel
Enter physical limits
of the channel
Choose data type of
the measurement
variable
This sensor does not
need offset
calibration
Enter name to auto-
matically create a
new measurement
sheet
7. Click ‘Finish’ when done.
8. Enter channel name and description.
9. Click ‘OK’ when done.
The channel is inserted into the C 70 Project Tree.
Channel is linked
to ANA05
Input pin Pull-up
resistor is activated
Characteristic
curve for sensor
Adjustment
is disabled
Available measurements for channel:

5 | Analog and Frequency Inputs
16/112 Data Logger C 70 Manual Bosch Motorsport
Measurement label Function
raw_name mV value of sensor
raw_name_fi filtered mV value of sensor
name physical value of sensor
name_fi filtered physical value
NOTICE
Working with automatically created measurement sheets is ex-
plained in chapter ‘Setting up an online measurement [}28]’.
5.2.4 Configuring a multipoint adjustment
Example: Measurement of wheel force
– Physical property ‘wheel force’ not directly measureable
– Load transfer through suspension kinematics
– Physical value at sensor position defined by vehicle
– Curve definition by online adjustment at vehicle
1. Click on ‘Measurement Sources’ in the Toolbox.
2. Expand the list of ‘I/O Channels’ by clicking on ‘+’ in the C 70 Project Tree.
3. Drag the ‘Multipoint Adjustment’ analog signal source from the Toolbox and drop it
on the desired analog input channel in C 70 Project Tree.

Analog and Frequency Inputs | 5
Bosch Motorsport Data Logger C 70 Manual 17/112
Drag + Drop
A ‘Multipoint Adjustment Wizard’ opens.
4. To activate the internal pullup-resistor, check the box. The internal pullup-resistor is
used to get a 5 V signal at the analog channel of the C 70. It allows you to use a push-
button. The fixed value of the internal pullup-resistor is 3.01 kOhm. If using an addi-
tional external pullup-resistor, set up the overall resistance.
5. Click ‘Next’ when done.
The second part of the ‘Multipoint Adjustment Wizard’ opens.

5 | Analog and Frequency Inputs
18/112 Data Logger C 70 Manual Bosch Motorsport
Physical
(channel)
value
Choose unit group
and unit of physical
value
Select type of curve
Enter physical
adjustment values
her (can still be
edited later)
Electrical (pin) value
6. Click ‘Next’ when done.
The third part of the ‘Multipoint Adjustment Wizard’ opens.
Physical limits
of channel
Enter physical limits
of the sensor
Choose data type
of the measurement
variable
Enable additional
online calibration
Enter name to auto-
matically create a
new measurement
sheet
7. Click ‘Finish’ when done.
8. Enter channel name and description.
9. Click ‘OK’ when done.
The channel is inserted into the C 70 Project Tree.
Channel is linked
to ANA06
Input pull-up resistor
is deactivated
Characteristic
curve for sensor
Adjustment
is enabled
Available measurements for channel:

Analog and Frequency Inputs | 5
Bosch Motorsport Data Logger C 70 Manual 19/112
Measurement label Function
raw_name mV value of sensor
raw_name_fi filtered mV value of sensor
name physical value of sensor
name_fi filtered physical value
Online definition of the curve is covered in the chapter ‘Online calibration of measurement
channels [}33]’ of this manual.
NOTICE
Working with automatically created measurement sheets is ex-
plained in chapter ‘Setting up an online measurement [}28]’.

5 | Analog and Frequency Inputs
20/112 Data Logger C 70 Manual Bosch Motorsport
5.2.5 Digital filter details
C 70 uses A/D converter oversampling and digital filtering to recording rate.
Digital filters eliminate ‘out-of-band’ noise
Cut-off frequency automatically adjusted to recording rate
Example:
– 100 Hz recording rate (10 ms)
– <40 Hz pass band (>99 %)
– >50 Hz stop band (<1 %)
Linear phase – no signal distortion
0
500
1000
1500
2000
2500
3000
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
Abtastwerte( roh)
Wert
10000Hz Abtastrate
0
5
10
15
20
25
30
-1.5
-1
-0.5
0
0.5
1
1.5
Abtastwerte( gefiltert)
Wert
100Hz Abtastrate
0
5
10
15
20
25
30
-1.5
-1
-0.5
0
0.5
1
1.5
Abtastwerte( dezimiert)
Wert
100Hz Abtastrate
Sensor signal with noise
Recorded signal 100Hz
(unfiltered)
Recorded signal 100Hz
(filtered)
Latency compensation – no filter delay in recorded data
– Filtering is (smart) averaging over several samples
– Filtered signal is delayed with respect to real time signal