Kipp&Zonen COMBILOG Data Logger - Manual (Page 46)

5.2 Digital Input Channel
The following functions can be realized by means of the Digital
Input Channel:
 Digital status recording
 Frequency measurement
 Counter
 8 bit Graycode transducers, Type 4122 / 4123
 8 bit status input, with additional (external) module
The above mentioned functions are based on incremental
measurements except the digital status and Graycode record-
ing. Incremental measuring means to count while measuring.
Pulses are counted e.g. from wind speed sensors.
Furthermore it is possible to connect up to 6 sensors with a
serial 8 bit Graycode output to the COMBILOG 1022, e.g. wind
direction sensor type 4122 / 4123.
By means of an external module type 1025 8 bit status signals
can be measured at each input. This module converts the 8 bit
into a serial signal, and the COMBILOG will compose it to 1
byte again.
Hardware Manual COMBILOG 1022 46