Typical System Configuration; Ifl Cable Considerations; Figure 4-3: Mini Compact Outdoor Sspb With Pd25 Evolution Modem; Table 4-3: Common Coaxial Cable Characteristics - Paradise Datacom RA 5785 Operation Manual

4.5 Typical System Configuration

This section shows the Compact Outdoor SSPB in a common system application. Figure
4-3 shows the Compact Outdoor used with a Paradise Datacom Evolution Series PD25
modem.
Indoor Equipment
RS485 M&C

Figure 4-3: Mini Compact Outdoor SSPB with PD25 Evolution Modem

4.6 IFL Cable Considerations

Consideration should be given to using a high quality IFL between the indoor equipment and
Compact Outdoor SSPB. The system designer must always consider the total cable loss for a
given length and also the implications of the slope of attenuation across the 950 to 1450 MHz
bandwidth. Table 4-3 gives the approximate attenuation vs. frequency for a variety of cable
types.
Cable Type Center
Conductor DC
Resistance per
1000 ft.
RG-214
Belden 8214
Belden 7733
Belden 9914
Belden 9913
It is recommended to use a quality grade of 50 ohm cable such as Belden 9913, 9914, or
7733. Check the manufacturer's technical data to make sure that the insulation is sufficient for
the particular installation including the cable's temperature range. Also make sure the coaxial
connector from the IFL cable to the Compact Outdoor input is wrapped with a weather sealing
tape to prevent water intrusion into the coaxial cable.
Operations Manual, HPA3, Mini Compact Outdoor SSPA
IFL Cable
IF: 950 - 1450 MHz (-30 to -20 dBm ) at Compact Outdoor SSPB
Ref: 10 MHz (-5 dBm to +5 dBm) at Compact Outdoor SSPB

Table 4-3: Common Coaxial Cable Characteristics

Outer
Diameter
(inches)
1.7 .425
1.2 .403
.9 .355
1.2 .403
.9 .403
Attenuation at Attenuation at
950 MHz 1450 MHz
dB per 100 ft. dB per 100 ft.
7.8 11.3
6.8 9.2
5.8 8.3
4.5 6.3
4.2 5.6
208143 REV -
Outdoor Equipment
PARADISE
DATACOM
Slope across
band for 100
ft. cable (dB)
3.5
2.4
2.5
1.8
1.4
Slope across
band for 300
ft. cable (dB)
10.5
7.2
7.5
5.4
4.2
45