If Cable; Indoor Equipment - Alvarion BreezeAccess II System Manual

1-6

IF Cable

The outdoor unit is connected to the indoor unit by means of an IF cable
carrying signaling, control signals and power. The IF frequency is
440 MHz. The maximum allowed attenuation of the IF cable connecting
the outdoor unit to the indoor unit is 15 dB at 440 MHz, and the
maximum allowed DC resistance (the sum of the DC resistance of the
inner and outer conductors) is 1.5 ohm. This allows for cable length of
up to 30 m when using the standard RG 58 cable.
If longer cables are required, a cable with lower attenuation and/or DC
resistance should be used. Table 1-2‚ page 1-6 provides details
regarding some popular cables such as the RG 58 and RG 213. If the
spectral environment is polluted with noise in the 440 MHz band, it is
recommended to use a higher quality double-shielded cable such as the
LMR 200, LMR 240 and LMR 400 (manufactured by Times
Communications).
Cable Type
Maximum cable length (m)

Indoor Equipment

The Indoor unit should be installed as close as possible to the point
where the IF cable enters the building. The location of the indoor unit
should also take into account the need to connect it to a power mains
outlet and to the CPE.
NOTE:
The system complies with the ETS 300 385 standard and is protected against secondary
lightning strikes when its outdoor unit is properly grounded according to the applicable
country-specific industry standards for protection of structures against lightning. The
system complies with EN 61000-4-5, test level 3 (2kV).
Manual Revision: 1.0
Table 1-2: IF Cables
RG 58 RG 213 LMR 200
30 100 45
BreezeACCESS Version 4.5 Installation
LMR 240 LMR 400
65 150