Analog And Frequency Inputs; Analog Inputs - Bosch C 70 Manual

5 | Analog and Frequency Inputs

5.1.1 Measurements channels
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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
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
raw_name
raw_name_fi
name
name_fi
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
Data Logger C 70 Manual
Function
mV value of sensor
Filtered mV value of sensor
Physical value of sensor
Filtered physical value
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