Siemens SCALANCE X-300 Series

Device variant Transmitter output (optical) Receiver input
min. [dBm] max. [dBm] Sensitivity min. [dBm] Input power max.
[dBm]
X320-3LD FE -15
1)
-8
1)
-34
1)
-3
1)
-19
2)
-14
2)
-32
2)
-3
2)
1)
Fast Ethernet, long distance interface
2)
Fast Ethernet, multimode interface
Note
Exception in the naming of X320-3LD FE
With the X320-3LD FE IE switch, the key to the name is different. The position -3LD covers a
total of 3 connectors (1-2) of which only 2 connectors are LD, refer to the explanation below:
● Port 21: Multimode
● Port 22: LD (long distance, single mode)
● Port 23: LD (long distance, single mode)
Note
2 optical interface transceivers possible (X320-3LD FE)
The device is also equipped with 2 optical interface transceivers.
●
1)
Fast Ethernet, long distance interface
●
2)
Fast Ethernet, multimode interface
As a result, the electrical data in the technical specifications is divided into two parts:
transmitter output optical and receiver input.
8.2.3 Cable lengths
Table 8-10 Permitted cable lengths (copper cable - Fast Ethernet)
Cable type Accessory (plug, outlet, TP cord) Permitted cable length
IE TP torsion cable with IE FC Outlet RJ-45
+ 10 m TP cord
0 to 45 m
+ 10 m TP cord
with IE FC RJ-45 Plug 180 0 to 55 m
IE FC TP Marine Cable
IE FC TP Trailing Cable
IE FC TP Flexible Cable
with IE FC Outlet RJ-45
+ 10 m TP cord
0 to 75 m
+ 10 m TP cord
with IE FC RJ-45 Plug 180 0 to 85 m
IE FC TP standard cable with IE FC Outlet RJ-45
+ 10 m TP cord
0 to 90 m
+ 10 m TP cord
with IE FC RJ-45 Plug 180 0 to 100 m
Technical specifications
8.2 X-300 technical specifications
SCALANCE X-300
Operating Instructions, 11/2019, A5E01113043-24 157