Specifications

Configuration Tsunami MP.11 5012-SUR Installation and Management

Interface Parameters

Selections for multicast rate are shown in the following table:

*Turbo Mode is available in the US only.

• Channel Bandwidth: Displays the selected channel bandwidth.

• Satellite Density: The Satellite Density setting is a valuable feature for achieving maximum bandwidth in a wireless

network. It influences the receive sensitivity of the radio interface and improves operation in environments with a high

noise level. Reducing the sensitivity of the unit enables unwanted “noise” to be filtered out (it disappears under the

threshold).

You can configure the Satellite Density to be Large, Medium, Small, Mini, or Micro. The default value for this

setting is Large. The smaller settings are appropriate for high noise environments; a setting of Large would be for a

low noise environment.

A long distance link may have difficulty maintaining a connection with a small density setting because the wanted

signal can disappear under the threshold. Consider both noise level and distance between the peers in a link when

configuring this setting. The threshold should be chosen higher than the noise level, but sufficiently below the signal

level. A safe value is 10 dB below the present signal strength.

If the Signal-to-Noise Ratio (SNR) is not sufficient, you may need to set a lower data rate or use antennas with higher

gain to increase the margin between wanted and unwanted signals. In a point-to-multipoint configuration, the BSU

should have a density setting suitable for all of its registered SUs, especially the ones with the lowest signal levels

(longest links).

Take care when configuring a remote interface; check the available signal level first, using Remote Link Test.

WARNING: When the remote interface accidentally is set at too small a value and communication is lost, it

cannot be reconfigured remotely and a local action is required to bring the communication back.

Therefore, the best place to experiment with the level is at the unit that can be managed without

going through the link; if the link is lost, the setting can be adjusted to the correct level to bring

the link back.

To set the Satellite Density, click Configure > Interfaces > Wireless. Make your density selection from the drop-

down menu. This setting requires a reboot of the unit.

Sensitivity threshold settings related to the density settings for the 5012-SUR are:

• Registration Timeout: This is the registration process time-out of an SU on a BSU. Default is 5 seconds.

• Network Secret: A network secret is a secret password given to all nodes of a network. An SU can only register to a

BSU if it has the same Network Secret. The Network Secret is sent encrypted and can be used as a security option.

5 MHz 10 MHz 20 MHz Turbo Enabled* (40 MHz)

1.53612

2.25 4.5 9 18

361224

4.5 9 18 36

6 122448

9 183672

12 24 48 (see note) 96 (see note)

13.5 27 54 (see note) 108 (see note)

Set Satellite Density to: For a Receive Sensitivity Threshold of: And a Defer Threshold of:

Large -95 dBm -62 dBm

Medium -86 dBm -62 dBm

Small -78 dBm -52 dBm

Mini -70 dBm -42 dBm

Micro -62 dBm -36 dBm