Environmental and electrical characteristics
120 MPR-e and MSS-1c User Manual 3DB19901EFAA Edition 01
3.7.14 — MPR-A: Maximum allowed cable length for MPT
Extended Power Unit
Table 3.22 provides the maximum cable lengths for use with an MPT Extended Power
Unit. Use of an external lightning arrestor will reduce the cable length by 10 m.
1.Equipped with SFP
Table 3.22 — Maximum allowed cable lengths for MPT Extended Power Unit (MPR-A)
Cable type Cat5E, 1AC016760006:
Power and data
on Ethernet cable
Cat5E, 1AC016760006:
Power only, data
on optical cable
Coaxial cable
1AB350440001:
Power only, data
on optical cable
Configuration Power
Requirement
Maximum length Maximum length Maximum length
MPT-MC/HC
1
42 W 100 m 100 m 300 m
MPT-HC with
XPIC
1
48 W 100 m 100 m 300 m
MPT-HC-
HQAM
1
39.5 W 100 m 100 m 300 m
MPT-HC-HQAM
with XPIC
1
40.5 W 100 m 100 m 300 m
MPT-XP
1
77 W 40 m 100 m 300 m
MPT-XP with
XPIC
1
83 W 40 m 100 m 300 m
MPT-XP-
HQAM
1
75 W 40 m 100 m 300 m
MPT-XP-HQAM
with XPIC
1
76 W 40 m 100 m 300 m
Constraint 1 Maximum current in Ethernet transformer < 1.8 A
Maximum current limit for Power Unit: 1.8 A
Maximum current limit
for Power Unit: 1.8 A
Constraint 2 Minimum MPT-HC/HC-HQAM PSU input voltage > -28 V, Minimum MPT-XP/
XP-HQAM PSU input voltage > -41 V
Constraint 3 Data traffic only with
Ethernet cable
Data traffic only with
optical cable
Data traffic only with
optical cable
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