Comtech EF Data IPSat GW1000 - Manual (Page 42)

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01-0945-401 Rev A 08/2004
IFL F- and N Connectors
Radyne ComStream supplies the necessary F- and N-connectors for use with the IPSat GW1000 IFL coax cables.
These connectors are designed for the recommended Times Microwave LMR-400 and Times Fiber RG-11 coaxial
cable. If another IFL coaxial cable is used, different F and N-connectors will be required and must be matched to the
coaxial cable selected.
IFL F-Connector
The F-connectors supplied with the IPSat GW1000 are designed to be used with the recommended Times Fiber RG-
11 coaxial cable. One F-connector must be installed on both the indoor and outdoor ends of the Rx coaxial cable. A
crimping tool must be used to securely fasten the F-connector collar. Although this crimping tool is available from
different vendors, ComStream recommends the following vendor for additional F-connectors or crimping tools:
• CABLE Prep, 203-526-4337
• Crimp tool part number HCT-211
For up-to-date information on vendors, contact your Radyne ComStream representative.
RG-11 Cable Assembly with F-Connector
To prepare the RG-11 cable and attach an F-connector, follow these steps.
1 Expose 5/16 inch (7.9 mm) of the center conductor. Ensure that the center conductor is not scored.
2 Remove 1/4 inch (6.4 mm) of jacket. Ensure that the braid is not cut. Fold exposed braid back over the
cable jacket.
1 Remove first foil. Ensure that the braid is not cut. Fold the second braid back over the cable jacket.
1 Guide the center conductor into the connector. Push the connector onto the cable until a reasonable stop is
felt.
2 Crimp the connector using the recommended crimping tool (.475 inch [12.1 mm] hexagon tool.)
IFL N-Connector
The N-connectors supplied with the IPSat GW1000 are designed for the recommended Times Microwave Quad-
shielded LMR-400 coaxial cable. One N-connector must be installed at both the indoor and outdoor ends of the TX
coaxial cable. By using the quad-shielded LMR-400 cable from Times Microwave, cable runs of up to 100 m (328
ft.) can be used for data rates above 19.2 kbps. For lower data rates, the maximum cable lengths are shown in the
following table.
Data Rate (kbps) Maximum Cable Length (m)
9.6 86
19.2 100
The maximum length assumes a receive E
b
/N
0
of 5 dB. With higher E
b
/N
0
values, maximum cable runs can be
increased to a maximum of 100 m. This cable attenuates the received signals by 6 dB per 30.5 m (100 ft.). For
longer cable runs, the receive signal E
b
/N
0
must be increased by an amount equal to the increased signal attenuation
caused by the additional cable length. For example, increase the far end transmit power by 6 dB for each additional
30.5 m of IFL coax cable length.