Nominal Power Level; Max Power; Min Power - Comtech EF Data Vipersat CDM-570 User Manual

V i p e r s a t C o nf i g u r a t i o n

Nominal Power Level

This menu item is for information only and displays the Nominal Power Level
in dB for the modulator. This power level is pulled from the Home State and
will vary as the data rate varies.

Max Power

The commissioning of a satellite terminal must comply with the calculated link
budget that is conducted before terminal installation. Using these calculations,
the maximum transmit power level permitted for the modulator(s) based on
link/satellite parameters can be configured. This is the value set by the Max
Power command in the DPC Configuration menu. Enter A at the command
prompt to display the Max Power dialog shown in figure 3-63.
Figure 3-63 Maximum Power Level prompt (CDM-570L)
If more than one modulator is used at this location, that must also be taken into
consideration and applied to this value set point. The value entered sets the
maximum power level allowed by all SCPC modulators.

Min Power

The Minimum Power level setting corresponds to the lowest transmit power
level permitted based on link/satellite parameters. Min Power typically can be
set to the lowest default value (-25.0 dBm for the CDM-570, -40.0 dBm for the
CDM-570L). There is generally no problem in allowing the modulator(s) to
reduce power levels when link conditions improve. Enter I at the command
prompt to display the Min Power dialog shown in figure 3-64.
Figure 3-64 Minimum Power Level prompt (CDM-570L)
V i p e r s a t C D M - 5 7 0 / 5 7 0 L U s e r G u i d e
3-50