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4.4 Communication
The standard communication interface is Ethernet with protocol IEEE 802.3 –
10/100 BaseT. other options are RS-232 / RS-422 / RS-485.
4.5 External Storage media
We have got two types External storage Media, SD card and USB for the record-
er. If the recorder is used with 6-channel inputs, an easy chart to show the maxi-
mum days
SD card
Log speed
1 second
10 seconds
120 seconds
Each record of data uses 2 bytes or 4 bytes of memory.
If the Log Speed ( the recording speed of measured data ) is set to the fastest
speed at 1 second per data, then for a six channels, 16GB SD Card will last ap-
proximately 15808 days [= 16GB / ( 2 bytes x 24 hours x 60 minutes x 60 sec-
The following formula is to calculate how many days the USB disk could do sav-
The ? days = (The capacity of SD card memory x Log Speed) / ( 2 x no. of
hours per day x 60 x 60 x Number of channels )
If the User is using USB to store data, To avoid losing recorded data while
transferring to PC, it is necessary to insert USB memory back again into the
recorder soon after loading recorded data onto PC.
promesstec GmbH I Niedersachsenstraße 4 I D- 48465 Schüttorf I Tel.:+49 (0)5923/ 90 229 0 I Fax:+49 (0)5923/ 90 229 29
16GB
15808 days
158032 days
1896304 days
* The above is an approximation
For ex: Selected data size = 2 bytes
onds x 6 Channels ].
ing before it is full.
E-Mail: office@promesstec.com I Internet: www.promesstec.com
32GB
31616 days
316064 days
3792608 days
14
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