User manual
CONFIDENTIAL Protium Technologies, Inc. 4050-9901
Rev No: 05
5 GHz RF Modem 31-Jan-2007 11 of 84
This document and information contained herein is subject to the restrictions set forth on the title page
.
IMPORTANT: The dash setting corresponds to a physical configuration internal to the modem and should not be
changed.
2.2.2.2 Receive Frequency
The receive frequency should be set with the command:
>
rxfreq ffff.f
The receive frequency of each modem must equal the transmit frequency of the other modem in the link. The
frequency is specified in 0.1 MHz steps.
2.2.2.3 Transmit Frequency
The transmit frequency should be set with the command:
>
txfreq ffff.f
The transmit frequency of each modem must equal the receive frequency of the other modem in the link. The
frequency is specified in 0.1 MHz steps.
2.2.2.4 Transmit Power
The transmit power should be set with the command:
>
txpower nn.n
The transmit power level is specified in dBm, adjustable in 0.5 dB steps.
2.2.2.5 RSL Threshold
The RF Modem has a programmable Receive Signal Level (RSL) threshold detector that may be used to evaluate
link margin. When the receive signal level drops below the programmed threshold, the RX alarm will be set. This
threshold is set at the factory to a default value of –110 dBm to minimize the chance of inadvertent RSL alarms
during initial system setup. The user should set the RSL alarm threshold so that RSL alarm events are generated at
an appropriate level depending on the actual operating conditions.
The RSL threshold should be set with the command:
>
rslthr –nn.n
The threshold value is specified in dBm.
2.2.2.6 Mute
The modem is configured at the factory with mute on. Mute should not be turned off until the frequency and
power settings are set correctly and an appropriate antenna (or load) is attached to the antenna connector.
2.2.3 Data Channel Configuration
2.2.3.1 Channel Selection
The modems may be configured to carry either full-duplex serial or Ethernet traffic. Only one type of traffic can
be carried at a time and both ends of the link must be set to the same selection. Configure the channel with the
command
>
channel serial