7.1.6
Accessories for Longer Cable Runs
Arbiter Systems offers longer antenna cables for use with all models of
clocks when the standard 6-meter (20-foot) cable is inadequate. For
RG-6 cable runs greater than 250 feet, up to 500 feet, Arbiter offers
a 21-dB in-line amplifier, P/N AS0044700. A larger RG-11 style cable
is available (P/N WC0004900, 305-m / 1000-ft roll), that can be used
for runs to 120 meters (400 feet) without the in-line preamplifier, or 240
meters (800 feet) with the AS0044700 amplifier.
P/N
Description
Delay, ns
Signal
Level, dB
CA0021315
15-m (50-ft) cable, RG-6
60 ns
-5 dB
CA0021330
30-m (100-ft) cable, RG-6
119 ns
-9 dB
CA0021345
45-m (150-ft) cable, RG-6
177 ns
-13 dB
CA0021360
60-m (200-ft) cable, RG-6
236 ns
-17 dB
CA0021375
75-m (250-ft) cable, RG-6
295 ns
-21 dB
WC0004900
305-m (1000-ft) roll RG-11
3.92 ns/m
-17.5
dB/100 m
AS0044800
RG-11 Kit and crimp tool
N/A
N/A
AS0044700
21-dB in-line amplifier
1 ns
+21 dB
Table 7.1: GPS Cable Data and Accessory Information
7.1.7
Physical Protection
When routing the antenna cable, protect it from physical damage, which
may result from closing doors, falling objects, foot traffic, etc. Also, when
routing around corners, allow for sufficient bend radius to prevent kinks.
Extra length should be allowed at both ends of the cable to prevent
tension on the connectors, which could cause damage or failure. Extra
length is useful as a service loop, in the event that a connector needs
replacement.
Do not stretch the cable mid-air over any appreciable distance without
support.
Cable degradation or failure could result.
Always leave a
drip loop wherever the cable enters a structure, to prevent water from
entering the structure via the cable jacket. The maximum temperature
rating for the type of cable provided with the clock is 75
o
C (167
o
F).
Exercise care when routing the cable near sources of heat to avoid cable
damage.
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