RadioFrame Networks Inc DH2 ユーザーズマニュアル
Method of Procedure
Pre-Installation
Pre-Installation
38
RFN_3.1 Beta
3.3.8 GPS
Antennas
The following apply to the GPS antenna array:
•
For cable runs up to 166 feet, use ½”
diameter LDF.
•
For cable runs from 167-290 feet, use 7/8” diameter LDF.
•
For cable runs longer than 290 feet consult with the RFN customer’s RF
Engineering.
Engineering.
•
For interior cable runs from Polyphaser to site control cabinet use ½”
diameter FSJ.
diameter FSJ.
•
Terminate all LDF within 6" of antenna.
3.3.9 Surge
Arrestors
The local telephone company installs the T1/E1 line, which terminates in an 8-pin
modular plug. This demarcation (demarc) point connects to the T1/E1 through a
surge arrestor. The following illustration shows the T1/E1 interface with the
iDEN/802.11b RFS.
modular plug. This demarcation (demarc) point connects to the T1/E1 through a
surge arrestor. The following illustration shows the T1/E1 interface with the
iDEN/802.11b RFS.
Figure 15
Telco (T1/E1) interface with the iDEN/802.11b RFS.
The surge arrestor must be adequately grounded as outlined in the Quality
Standards Fixed Network Equipment - Installation Manual (R56). The surge
arrestor usually mounts near the demarcation (demarc) point. The cable
connecting the surge arrestor to the Telco SmartJack should be locally procured,
or should be provided with the surge arrestor. The cable connecting the iSC-3 to
the surge arrestor is locally procured. The following table lists RFN-approved
surge suppression equipment.
Standards Fixed Network Equipment - Installation Manual (R56). The surge
arrestor usually mounts near the demarcation (demarc) point. The cable
connecting the surge arrestor to the Telco SmartJack should be locally procured,
or should be provided with the surge arrestor. The cable connecting the iSC-3 to
the surge arrestor is locally procured. The following table lists RFN-approved
surge suppression equipment.