C-Nav Hardware Reference Guide
23
Table 2-1: Acceptable Coaxial Cable Lengths
Cable Type
dB Loss per 100'
dB Loss per 100m
7dB Loss Point
18dB Loss Point*
RG-174
34.77
114.075
20.132' (6.136m)
51.769' (15.779m)
RG-58
19.608
64.331
35.700' (10.881m)
91.799' (27.980m)
RG-223
17.226
56.516
40.636' (12.386m)
104.493' (31.850m)
RG-142
16.496
54.121
42.435' (12.934m)
109.117' (33.259m)
RG-213
9.566
31.385
73.176' (22.304m)
188.166' (57.353m)
RG-8
9.566
31.385
73.176' (22.304m)
188.166' (57.353m)
RG-214
9.526
31.253
73.483' (22.398m)
188.957' (57.594m)
LMR195
14.904
48.898
46.967' (14.316m)
120.773' (36.812m)
LMR240
10.128
33.228
69.115' (21.066m)
177.725' (54.171m)
LMR400
5.263
17.267
133.004' (40.540m)
342.010' (104.245m)
LMR600
3.408
11.181
205.399' (62.606m)
528.169' (160.986m)
*Note: 18dB Loss Point applies to the C-Nav1000 System only, all other C-Nav GNSS/GPS Systems should not
experience signal loss greater than 7dB
Lightning Protection
Where the GNSS antenna is exposed to sources of electromagnetic discharge such as
lightning, install a properly grounded in-line electrical surge suppressor between the
GNSS receiver and antenna. Install protective devices in compliance with local
regulatory codes and practices. Protective devices must pass DC power from the
receiver to the antenna. Contact C-Nav Support or refer to
Chapter 4
of this guide for
more information on available lightning protection solutions.
GNSS Receiver
GNSS receivers are best installed using the mounting brackets provided. When choosing a
location for GNSS Receiver installation, consider the following:
Avoid placing the receiver in direct sunlight, places with inadequate ventilation, or where
it might be subject to excessive dust.
Ensure the receiver is mounted securely to a flat surface in an area with little vibration.
Shock isolators suitable for 1.8kg (4lbs) may be necessary for environments with high
vibration.
Do not place the receiver in a confined space or where it may be exposed to excessive
heat, moisture, or humidity.
Install the receiver in a location with easy access to both the front and back panels.
Refer to applicable C-Nav Product User Guide for GNSS/GPS Receiver-specific setup
and configuration.
Summary of Contents for IALA
Page 1: ...DGNSS Systems Hardware Guide www cnavgnss com...
Page 20: ...C Nav Hardware Reference Guide 20 Figure 2 3 C Nav Antenna Mounting Pole Dimensions...
Page 65: ...C Nav Hardware Reference Guide 65 Model No 3402 17 0070 Specifications...
Page 67: ...C Nav Hardware Reference Guide 67 Huber Suhner Lightning Protector Mounting Instructions...
Page 68: ...C Nav Hardware Reference Guide 68...
Page 69: ...C Nav Hardware Reference Guide 69 MOXA Converters TCC 80I TCC 80I Specifications...
Page 72: ...C Nav Hardware Reference Guide 72 Times Microwave LMR400 Coaxial Cable LMR400 Specifications...
