Installation Manual

Chapter 2. Prior to Installation
36
Cable Length Restrictions, Continued
Cable length
restrictions,
continued
• S-FTP cable (CAT5E or CAT6) used with provided power injectors
(1)
,
continued
S-FTP cable (CAT5E or CAT6) used with provided DC type power injectors
(with order code PONE-OD-DC):
The length of the SFTP cable, between PonE injector and radio unit, cannot
reach 100 meters when the DC voltage at the input of the PonE is the lowest
defined by the standards (40.5 V).
This is because the voltage drop on the S-FTP cable will result in the
Voltage at the input of the DC power module of the radio unit to be less than
the min allowable value for operation. Higher input voltage need to be
applied to ensure proper powering of the radio.
The following table shows the maximum SFTP cable length versus the
voltage at the input of the PONE for Cat5E and Cat6 cable types.
Input voltage to the PonE
(VDC)
max length of Cat6
S-FTP cable (m)
max length of Cat5E S-
FTP cable (m)
40
80.00
65
40.25
85.00
70.00
40.5
90.00
75.00
40.75
95.00
80.00
41
100.00
85.00
41.25
100.00
90.00
41.5
100.00
95.00
41.75
100.00
100.00
42-60
100.00
100.00
(1)
Use of PoE/PonE powering is applicable only with radio units featuring DC power module.