Comtech EF Data LGAN, Инструкция по установке и эксплуатации

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LGaN
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Ethernet Interface Operation 4–20 MN-LGAN
4.5.3.2 Config | LNB
Figure 4-15. ‘Config | LNB’ Page
This webpage is only displayed when Internal Reference is active.
LNB Configuration
Name Description
LNB Current Source Use the drop-down list to select Disable or 18V, tone off, band 3.
These are the only valid selections when using LGaN LNB bias
functionality with standard single-band LNBs.
Switch Bias Tee Use the drop-down list to select Through State (unmute LNB) or Off State (mute LNB).
LNB Current Window Use the drop-down list to select this feature as either Enabled or Disabled.
LNB Current Window (%) This field defines the size of the LNB Current Window, and determines the fault
thresholds for the LNB current draw.
Any LNB current reading that is outside the window may generate an alarm, a fault, or
may be masked entirely depending on the state of the user-configured fault mask (see
the MSK command syntax in Chapter 5. SERIAL INTERFACE OPERATION for more
information).
For example: If the LNB draws 100mA, and the LNB current fault window is set to the
default value of 30(%), then the allowable current draw for the LNB will be from 70 mA
minimum to 130 mA maximum because the window is ±30% centered on the calibrated
LNB current draw.
Click [Submit LNB] to save.
Calibrate LNB Current
Calibrate the LNB only when it is running at nominal operating conditions.
The value provided here (in mA) is intended as a reference point. The alarm upper and lower thresholds are
determined by this value and the LNB current window setting.
Click [Calibrate] to perform an LNB calibration and display the updated read-only value.