Exalt Communications, Inc.
r-series
Installation and Management Manual
5000007 (ETSI)
25
2007-02-12 (draft)
Terminating the RF Connectors r-(x)c Series models only)
Before applying power, the RF connectors must be properly terminated into a 50-Ohm load. If
this is not performed, the radio may be damaged by simply applying power. Also, there are
human safety factors to consider regarding potentially harmful RF radiation.
The following lists a few simple ways to achieve proper termination:
•
Connect a 50-Ohm coaxial termination device to the RF port of the radio. The termination
must be rated to 1W (or more). Example(s) include:
¶
Broadwave Technologies P/N 552-200-002, or similar
•
Connect the complete transmission system. That is, the RF cabling including the antenna.
The cabled antenna provides a proper termination for the RF output.
•
Connect a fixed (or a series of fixed) 50-Ohm attenuator(s) to the RF connector, either
directly or at the end of an RF transmission line. The attenuator must be at least 30dB as
specified at the operating frequency and rated for a minimum of 1W input power. Examples
include:
¶
Broadwave Technologies P/N 352-103-xxx
¶
Bird 2-A-MFN-xx
¶
JFW Industries 50FP-xxx-H6-N
Cover any unused connector with the connector cap and apply the weather-seal tape. Both cap
and tape are included in the accessory kit.
AC Power
The AC adapter easily connects to the power injector. Refer to the input voltage requirements
stated on the label affixed to the adapter to ensure that the adapter can be used with the AC
mains supply.
The AC plug outlet provided with the adapter may need to be replaced to match the country
configuration. The adapter cable uses a standard connector for this cable for use of a pre-wired
cable appropriate to the outlet configuration. If the appropriate cable is not available, the existing
AC plug end can be severed and a replacement plug affixed. Consult a qualified electrician for
this activity.
Do not plug the adapter into the mains power. First, verify that the RF connector is properly
terminated (see Power on page 24), and then plug in the radio-side connector from the AC
adapter to the radio. If the AC mains can be turned off using a switch, disable the power, plug the
AC side of the adapter into the AC mains socket, and then enable power to the circuit. If the AC
mains cannot be turned off, plug in to the AC main socket to apply power.
Verify that the radio is active by observing LED activity on the injector and radio. All LEDs on
the radio flash at initial power cycle.
Exalt strongly recommends that the AC mains supply be fused or on a separate breaker to ensure
against over-voltage and/or over-current situations and to provide some form of protection to the
radio electronics and other devices connected to the same supply. In addition, if the AC power is