User manual

CONFIDENTIAL Protium Technologies, Inc. 4050-9901
Rev No: 05
5 GHz RF Modem 31-Jan-2007 18 of 84
This document and information contained herein is subject to the restrictions set forth on the title page .
3 Monitoring Operation
3.1 Activity Indicators
When there is serial data present at the EIA-530/232 data port, the TX and RX status LEDs flash to indicate the
presence of transmitted and received data respectively.
Each LED flashes when the first data is detected and continues to flash at a predetermined rate as long as data is
being detected. In synchronous mode, only changes in the data are detected so that a continuous stream of a single
character will not cause the LED to flash.
In addition the DAT status LED flashes to indicate a data error has been detected.
Note: the status LEDs flash to indicate the corresponding activity but will be on solid to indicate an alarm. Refer
to the following section for more information on alarms.
3.1.1 Transmit Activity Indicator
The TX status indicator flashes when data input is present at the EIA-530/232 port whether or not this data is
transmitted. Certain conditions, such as if loopback is on or the radio is muted, will prevent the data from being
transmitted even though the TX indicator is flashing.
3.1.2 Receive Activity Indicator
The RX status indicator flashes when data output is present at the EIA-530/232 port.
3.1.3 Data Error Indicator
The DAT status indicator flashes whenever an uncorrectable error occurs in the received data. This indicates a
block of data was corrupted beyond what is correctable by the error correction algorithm. This is not normal and
these events should be extremely rare in a normally operating link.
3.2 Alarms
The modem detects various abnormal conditions and generates an alarm to alert operators to the condition. The
alarm conditions are grouped in to four categories: system, data, transmit, and receive alarms. Each category is
associated with a status LED on the front and rear panels and with a solid-state relay contact closure. The specific
conditions that generate each alarm are described below.
The system alarm status LED is green and is normally illuminated. It is extinguished when there is a system alarm
or when any of the other alarm categories are asserted. Thus a no-alarm condition is easily identified by the green
system LED on the panel being illuminated. Conversely, an alarm condition is easily identified by the green status
LED being extinguished.
The other three alarm categories have a corresponding amber status LED that illuminates when an alarm condition
is detected. Multiple alarm conditions may be present so more than one alarm LED may be illuminated.
Each of the four alarm categories also has a corresponding solid-state relay contact closure. The system alarm
contact closure is normally closed while the other three contact closures are normally open.