Siklu EtherHaul-1200F, Руководство по установке

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EH-1200F Installation Manual
Page 20
2.4 Required Tools
Ensure that you have the following tools with you when performing an EtherHaul
installation:

Standard handheld digital voltage meter (DVM) with probes

Standard open-end wrench, 13 millimeter

8mm Allen key for ODU installation with 2ft antenna

Philips screwdriver, medium size head for grounding connection

Flat-head screwdriver, small size (2mm) head for DC connector

Cable ties (for securing network and optional power cables)

Cutter

Cable labeling
2.5 Preparing for Installation
The expected receive signal strength should be calculated prior to installing the link for
each antenna ODU (read from the DVM) prior to installation, based on the network link
budget.
Calculating the expected RSSI:
Where:

P
tx
– ODU’s Tx Power (typ5dBm)

Gant1 – Gain of antenna 1 (typically 35dBi)

Gant2 – Gain of antenna 2 (typically 35dBi)

LFS – Loss of Free Space = 92.45+20*Log (D
Km
*F
GHz
)+
-
D - Link distance in Km
-
F – Frequency in GHz

Att
atm
– Attenuation due to Atmospheric Gases (dB/Km)
For E-band links, the Attenuation due to Atmospheric Gases is typically
0.5dB/Km.
For V-band links, the Attenuation due to Atmospheric Gases is significantly
higher (up to 15dB/Km) and depends on the specific channel used and the exact
geographical location.
Refer to EtherHaul Link Budget Calculator for on-line calculation of expected
availability and expected RSSI.
RSSI = P
tx
+ G
ant1
– LFS – Att
atm
+ Gant2