Notes On The Pulse Inputs; Notes For Operation - GO Systemelektronik BlueBox T4 Manual

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1.4 Notes on the Pulse Inputs

The Blue Box T4
1
of the BlueBox. see 3.2.2 Connector Pin Assignment at the BlueBox T4
The pulse inputs 1 and 2 are provided for the connection of PNP or NPN encoders.
The delivery state is NPN, the selection is set with the associated jumpers.
see Appendix H – Mainboard Connectors BlueBox T4 or bottom label in the BlueBox
Both pulse inputs can be used as static inputs, the conversion is carried out with the program AMS
(AMS is part of the BlueBox PC Software).
Settings in AMS
1.5 Notes on the Storage Space Management of the CompactFlash Card
If the storage space on the CompactFlash card is full, the sensor data will be deleted day by day to make space
for new sensor data. Sensor data consists of the measurement values
log, calibration log and system log)
The operating system
and the firmware
3
A measurement value needs 8-12 bytes (16-20 bytes with GPS data).
A spectrometer absorbance spectrum needs 1540 bytes (1548 with GPS data).
Example: BlueBox, CompactFlash card with 256 MB, 1 sensor, 1 spectrometer
In a measurement interval of one minute approx. 0.5 MB for the sensor and about 64 MB for the spec-
trometer are assigned to the CompactFlash card per month.
So here deleting old sensor data begins after approx. 3 months.
Example: BlueBox, CompactFlash card with 256 MB, 5 sensors, 1 spectrometer
In a measurement interval of two minutes approx. 1.25 MB for the sensors and about approx. 32 MB
for the spectrometer are assigned to the CompactFlash card per month.
So here deleting old sensor data begins after approx. 5.7 months.
It is recommended to choose the measurement interval as large as possible.
1
only BlueBox T4, not T4 Basic
and possibly GPS data contained therein
2
The operating system of BlueBox consists of Linux® and BlueBox specific components, the actual version at writing
3
this manual is 1.9.
The firmware is the BlueBox application software on the operating system, the version described here is 2.78.36.
4
GO Systemelektronik GmbH
has two galvanically isolated pulse inputs. The connectors are located at the bottom
o
Frequency (Positive edge)
o
Frequency (Negative edge)
o
Static input
o
Frequency (debounced 20 Hz)
• The oldest data will be deleted first.
of the BlueBox need memory space of approx. 45 MB.
4
Faluner Weg 1
24109 Kiel
www.go-sys.de
and the log files of the sensors (sensor
2
Germany
Tel.: +49 431 58080-0
info@go-sys.de
Page 11 / 99
Fax: -58080-11

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