Other Properties - Siemens SCALANCE X-300 Series Operating Instructions Manual

Technical specifications
8.9 MM900 technical specifications
Recommendation for the attenuation of the attenuator on a connection with the same
transceivers:
Transceiver type
LH
LH+
ELH, ELH200
If you have established a connection on a pluggable transceiver with a short cable length, it is
possible that the transmitter will be turned off. In this case, pull the transceiver and plug it in
again.
GI-PCF
For segment lengths longer than 100 m, you can use GI-PCF cables. Note the information of
the manufacturer.
8.9.4

Other properties

Table 8-109 Mean time between failure (MTBF)
Device version (power supply)
MM992-2CUC,
MM992-2CUC (C),
MM992-2CU,
MM992-2M12 (C)
MM991-2P (SC RJ)
MM992-2VD
MM991-2 (BFOC)
MM991-2 (SC)
MM991-2FM (BFOC)
MM992-2 (C) (SC)
MM991-2LD (BFOC)
MM991-2LD (SC)
MM992-2LD (LD)
MM991-2LH+ (SC)
MM992-2LH (SC)
MM992-2LH+ (SC)
MM992-2ELH (SC)
MM992-2SFP
These values apply at 40 °C
1)
You will find further information in the compact operating instructions "Transceiver SFP/SFP+".
2)
empty
3)
210
2)
Attenuator
6 dB ... 12 dB
12 dB ... 20 dB
16 dB ... 24 dB
MTBF
1)
> 250 years
> 230 years
> 200 years
> 140 years
> 135 years
> 115 years
> 105 years
> 95 years
> 250 years
3)
Operating Instructions, 11/2019, A5E01113043-24
SCALANCE X-300