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User Guide and Technical Manual
ODU Disconnect/Reconnect During Operation
The
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IDU always monitors the connection between itself and the ODU on
the selected port.
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automatically detects whether the connection is lost
between IDU and ODU within 15 seconds. If connection loss is detected, an alarm
displays in the alarm indicator, the RF Band button displays NO ODU, and the 16x2
Frequency display is unlit and the selection LED button is lit red.
In case of a disconnect, the IDU continues to search within the current port for the ODU.
If the ODU connection is re-established, then the previous alarm will clear, and the RF
Band button will show the RF band of the ODU connected. The 16x2 Frequency display
presents the frequencies supported by the head. In the case of multiple bands included
within the ODU, the IDU will set the ODU to the band selected before the ODU was
disconnected.
Local Antenna control
ENG Mode
The upper Antenna Control OLED button controls Antenna Polarity [see Figure 5 item
K]. This button cycles between vertical [V], horizontal [H], right-hand circular [RC] and
left-hand circular [LC] polarization. There is minimal delay between switching from one
polarity state to another.
The middle OLED button controls a relay to switch between Antenna 1 and Antenna 2.
There should not be any delay between switching from one Antenna to another. The
ability to switch from Antenna 1 to Antenna 2 is an option that needs to be enabled from
the Web interface. If this option is not selected, then pressing the antenna button will
not cause the state of
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to change.
The lower Antenna Control OLED button controls RF band based on which ODU is
connected. See Change ODU [RF Bands] for more detail on this.
SNG Mode
The OLED buttons under Antenna Control are re-purposed as frequency selection
arrow keys when a SNG preset is used.
