Maintenance M7/M7L/M7LT Modular Satellite Modem3-2 M7/M7L/M7LT - Rev. 0.05Table 3-1 - Modem LED IndicatorsIndicator Name Indicator Color DescriptionPower: Green Indicates the modem unit is currently under power.Online Green/OffIndicated that the modem is online. In 1:1 redundancyconfiguration, (future option) this indicator will be lit green on theon-line modem and the off on the modem that is off line.Table 3-2 - Modulator LED IndicatorsIndicator Name Indicator Color DescriptionTransmit: Green Indicates that the transmit output is currently activeGreen Flashing Indicates an IF Loopback test is active and the carrier isconfigured to the “disabled” state.Major Alarm: Red Indicates that the transmit direction has failed, losing trafficMinor Alarm: Yellow Indicates a transmit warning condition exists.Test: Yellow Flashing Indicates the modulator is involved in a current test mode activityTable 3-3 - Demodulator LED IndicatorsIndicator Name Indicator Color DescriptionLock: Green Indicates receiver lock to an incoming CXR and data includingFEC syncMajor Alarm: Red Indicates that the receive direction has failed, losing traffic.Minor Alarm: YellowIndicates a receive warning condition exists, either an incomingcarrier with a low input level or a low Eb/No (programmablethreshold), or a backward alarm received from the far endTest: Yellow Flashing Indicates the receiver is involved in a current test mode activity3.2.2. Front Panel KeypadThe front panel keypad consists of three areas: First, is a 10-key numeric entry with 5 additional keys.Two keys provide for a “+/-” (change sign) and “.” (decimal point) function, three provide “Edit”, “Clear”and “Enter”, and four. The “Enter” key on the lower right is normally blue while the rest of the numerickeypad keys are gray.The second area is a set of “Arrow” or “Cursor” keys used to navigate the parameter currently beingmonitored or controlled. During entry, the cursor keys allow moving a cursor to individual digits of anumerical entry or scrolling through the available options of a selection entry. The arrow keys are alsoin blue.The third area is the four selection keys located below the LCD display. These buttons select whichfunctional area or “sheet” of the display matrix is currently in use and are discussed within the LCDdisplay section below.3.2.3. Front Panel LCD DisplayThe LCD display is a single entry window into the large matrix of parameters which can be monitoredand set from the front panel. The front panel display is graphical 240 x 64 pixel LCD display. Thedisplay is backlit and the brightness can be set for two states: Active and Idle. The active state isentered whenever a key on the front panel is pressed and the display will automatically go to the idlestate after approximately 60 seconds of inactivity. Each state may be set to different levels ofbrightness based on the preference of the operator. The default setting is ‘Backlight Full’ in the activestate and ‘Backlight 2’ in the idle state. To change the settings for either state go to the Keyboard – LCD Active> or – LCD Idle> brightness parameter and adjust to thedesired values.
