User's Manual

Date Code 20091009 SEL-3031 Instruction Manual
Settings and Commands
Settings
4.13
The SEL-3031 has radio statistics to help set the SKIP setting if the availability of the
radio is less than desired. In order to determine which frequency zones to skip, issue a
RADio C command and operate the radios over a period of time. You will get better
availability results the longer you let the radio run linked. Issue the RADio command
to view the availability of each frequency zone. In the radio report identify the
frequency zones with the lowest availability and enter these zones via the SKIP setting.
Issue another RADio C command and let the SEL-3031 run for another day and verify
that the availability has increased. See Section 5: Performance Monitoring, Testing,
and Troubleshooting for more information on how to use the SKIP setting.
TXPWR sets the transmitted power out of the SEL-3031. The available range is
20–30 dBm (1 W). The radio transmit power is set in 1 dBm increments. The radio is
shipped with a factory default setting of 30 dBm. This setting must be used to reduce
the power output of the antenna if the total EIRP exceeds 36 dBm. See Transmitted
Signal on page 2.3 for more information on how to calculate and configure the
maximum power output.
In the USA and Canada, the FCC and IC regulate the amount of power a radio can
radiate with EIRP (Effective Isotropically Radiated Power output). The EIRP limit of
radiation is 36 dBm. This value includes the power of the transmitter, cable losses, and
antenna gain. If you exceed the allowed 36 dBm you must lower the transmitted power
of the radio using the TXPWR setting, and then measure the actual power.
See Transmitted Signal on page 2.3 for more information on determining and properly
setting the TXPWR setting.
The KEY setting is only available if the product contains an SEL-3044 Encryption
Card. The KEY setting is a passphrase that is used to generate an encryption key. The
acceptable range is from 8 to 80 characters. All printable characters are accepted. If
you have an encryption card, this value must be set in order to enable the secure
wireless connection. When the SEL-3031 is shipped with the encryption card, or added
in the field, it is by default shipped in reset mode. The SEC LED on the front panel will
flash green to show this state. The KEY setting must be set in order to activate the
encryption card. The SEL-3031 radios will not transmit data until the SEL-3044 is set
properly. The SEC LED will illuminate green when the KEY setting is correctly set. The
green SEC LED indicates data being set through the radio link is secured. Once the KEY
setting is configured the setting can never be read back, viewed, or saved with
ACSELERATOR QuickSet software.
To encrypt a radio link, both radios must contain an SEL-3044 and the KEY settings
must be set to the same value. See Appendix B: SEL-3044 Encryption Card for more
information on the SEL-3044 Encryption Card.
Port Settings
The SEL-3031 settings allow you to configure the parameters for each of the three
communications ports. The SEL-3031 comes standard with three EIA-232 ports. Port 1
can be ordered as an EIA-232, EIA-485, or serial fiber-optic port. Table 4.6 shows the
port settings ranges and default settings for Port 1, Port 2, and Port 3.