3.5 Front panel Operation

The front panel of the sat-nms LFTX/RX chassis provides a LCD and a small keyboard for operating the device locally.

Display The 2-line display normally shows the actual fault-state of every slot and also the 2 power supplies. During menu operation it is used to view and edit each individual parameter of the LFTX/RX. The following screen is shown the first few seconds the unit is running. The lower line shows you the installed software version. You can take a look at the software version on the LFTX/RX website with pressing the INFO button as well.

LEDs

Three LEDs at the front panel signal the summary state of the chassis

• The 'Remote' LED is on while the unit is controlled from a remote computer via network or serial interface. There is no exclusive remote or local lockout mode with the sat-nms LFTX/RX. Local operation of the LFTX/RX is still possible while the device is accessed remotely. The 'Remote' LED is just an information, that someone from remote talks to the device and a local change of parameters may interfere with this.
• The 'Test' LED should not be on during normal operation of the unit. If the 'Test' LED is on, there has occurred a latched fault. A latched fault means, the fault has been there but it doesn't exist no longer. So the 'Test' LED is on to inform you that there has occurred a fault. You can see in the 'Alarm log' which fault occurred. on the frontpanel of recently delivered sat-nms LFTX/RX frames this LED is labelled with 'Latched Alarm'.
• The 'Alarm' LED is on while the unit is in alarm state. This is the same condition which controls the fault relay output.

Keys

The front panel keyboard provides beside the numeric keys four arrow keys and two keys named ENTER and CLEAR. The general meaning of the keys remains constant through all levels of the menu:

• --- The ENTER key descends in the menu tree, accepts and stores changed values.
• --- The CLEAR key leaves to higher menu levels, abandons changes when editing parameters. It also resets the alarm buzzer when in display mode.
• --- The arrow keys navigate in the menu, in some cases they also increment / decrement values.
• 0 .. 9 --- The number keys are to enter numeric parameters.