Security Command R500 Spécifications Page 23

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1070 072 131-102 (96.08) GB
Hardware Description2-10
2.6.6 V.24/20 mA Interface Cable Length Specifications
The maximum permitted interface cable length depends on the baud rate
The following length specifications apply to the twisted-pair, shielded 14 x
0.14 Bosch cable, Bosch no. 910152:
Transmission rate V.24 20 mA
Baud rate (bps) [m] [m]
110...4800 300 350
9600 300 300
19200 100 150
Fig. 2-10 V.24/20 mA Interface — Cable lengths
It is assumed that there are only slight differences in potential (-2 V < V
diff
< +2 V) between sending and receiving device (applies only to the V.24
interface).
It is also assumed that the interface modules of the partner device are of
a quality that is at least equal to that of the R500 computer interface mo-
dule.
Do NOT route data transmission lines parallel and adjacent to power li-
nes.
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