Scanning ODU Frequency Interference

In this user interface, you can use the U2000 Web LCT to scan frequency interference on an ODU. When channel interference occurs, the commonly-used method is using special instruments to check whether transmit frequencies are interfered with. However, using special instruments to scan frequencies is not cost-effective. You can use the automatic frequency scanning function provided by the U2000 Web LCT instead.

Navigation Path

In the NE Explorer, choose Diagnosis&Maintenance > ODU Frequency Scan from the navigation tree.

In the NE Explorer, choose Diagnosis&Maintenance > RX Scan from the navigation tree.

Button Description

Button	Description
Start Frequency Scanning	Starts scanning after he ODU slot and scanning range are set. NOTICE: This operation will cause link and service interruption. Exercise caution when starting frequency scanning.
Stop Frequency Scanning	Stops scanning during the progress. After the scanning stops, the radio frequency parameters TX Frequency (MHz) and Tx Status will restore the original settings before the scanning.

Parameter Description

Parameter	Value	Description
Mute Peer Transmit Status	Selected, Cleared	Specifies whether to mute the peer transmit status. NOTE: If you select the Mute Peer Transmit Status check box, local and peer ODUs are both muted after frequency scan starts. When the scan is complete, the local ODU will resume the transmit status and RF parameters will resume their original values; the peer ODU will resume the transmit status after Auto Disabling Time (min) is due. If you clear the Mute Peer Transmit Status check box, the peer ODU is not muted and the value of Auto Disabling Time (min) is not changed after frequency scan starts.
Link ID	For example: 1	Indicates the link ID.
TX Frequency (MHz)	For example: 23307.500	Indicates the current transmit frequency of the ODU. The transmit frequency varies with the scan frequency during the scanning.
RX Power(dBm)	-	Indicates the RX power of the ODU.
Frequency range (MHz)	For example: 23282.000 to 23618.000	Indicates the frequency range of the ODU. Different ODUs may support different frequency ranges.
Frequency Adjustment (MHz)	1.5, 1.75, 3.5, 7, 14	Indicates the frequency adjustment step during the scanning. Scanning starts with the smallest frequency and jumps to a larger frequency according to the specified step until the scanning reaches the largest frequency of the frequency range.
RF Slot ID	For example: 21-ODU	Indicates the ODU slot for frequency scanning.
TX Status	Muted, Unmuted	Indicates the transmit status of the local ODU. After the scanning starts, TX Status becomes Muted automatically. After the scanning is complete, TX Status restores the original value Unmuted.
Scanning range (MHz)	For example: 23300.000 to 23600.000	Indicates the actual range of frequency scanning. The actual scanning range must be contained in the Frequency range(MHz).
Auto Disabling Time (min)	30, 15, 10, 5 You can also type an integer between 1 to 2880.	Indicates the time for automatically disabling the remote ODU. Generally, the default value is recommended. NOTE: This parameter applies only to the remote ODU.