4 front panel led indicators -3, 5 parameter setup -3 – Comtech EF Data DD240XR Rev Е User Manual
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DD240XR High-Speed Digital Demodulator
User Interfaces
MN-DD240XR – Rev. E
4-3
4.1.4 Front Panel LED Indicators
Eight LEDs on the DD240XR Front Panel (Refer to Table 4-3) indicate the status of the
DD240XRs operation. The LED colors maintain a consistent meaning. Green signifies that the
indication is appropriate for normal operation. Yellow means that there is a condition not proper
for normal operation, and Red indicates a fault condition that will result in lost communications.
Table 4-3.
LED
Color
Function
Carrier Lock
Green
Indicates the DD240XR Demodulator and Decoder are
locked.
Major Alarm
Red
Indicates that the receive direction has failed, losing traffic.
Minor Alarm
Yellow
Indicates a receive warning condition exists.
Test Mode
Yellow
Indicates the demodulator is involved in current test mode
activity.
Power
Green
Indicates the DD240XR unit is currently powered up.
Fault
Red
Indicates a common fault exists such as power out of spec.
Event
Yellow
Indicates that the events have been logged into the event
buffer.
Remote
Green
Indicates that the unit is set to respond to the remote control
or terminal input.
4.1.5 Parameter Setup
The four arrow keys (
↑), (↓), (→), (←), to the right of the LCD display are used to navigate the
menu tree and select the parameter to be set. After arriving at a parameter that needs to be
modified, depress
is ready for a new parameter to be entered. After entering the new parameter using the keypad
(Refer to Figure 4-3), depress
made prior to pressing
parameter. Depress
Following a valid input, the DD240XR will place the new setting into the nonvolatile SRAM making
it available immediately and available the next time the unit is powered-up.