10 | Analog and Frequency Inputs
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Modular Sensor Interface M 60
Bosch Motorsport
10 Analog and Frequency Inputs
This chapter describes the analog and frequency inputs.
10.1 Features
26 analog inputs (with Software Upgrade 2; 6 analog inputs available without upgrade)
– 0…5 V
– 12 bit A/D converter
– Switchable 3.01 kOhm pull-up resistor
– 8 kHz acquisition rate, up to 1 kHz recording rate
– Linear phase digital filter
4 frequency inputs (with Software Upgrade 2; no frequency inputs available without up-
grade)
– 5 V Hall-effect type, 2.5 V trigger level
– 20 kHz max. frequency
– 10 ms measurement window
4 PWM outputs
– Low-side switch
– Up to 2 A each
– Output frequency selectable
10.2 Measurement 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:
– M 60 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.
