Comtech EF Data DMDVR20 LBST Rev 1.1 - Manual (Page 45)

User Interfaces DMDVR20 LBST Satellite Modem
4-8 TM136 – Rev. 1.1
If user enables the FSK and the BUC does not support FSK, the modem
will display a fault or if the user selects the incorrect manufacturers BUC,
the unit will display a fault.
BUC OUTPUT {Enable/Disable}
(Only available when the FSK Comm is Enabled)
Enables or Disables the BUC RF Output.
LO FREQ (MHz) Allows the user to enter the Local Oscillator frequency of
the BUC LO in order for the uplink frequency to be
displayed correctly (refer to the BUC manufacturer’s
specifications).
OSC SIDE BAND {LOW SIDEBAND, HIGH SIDEBAND}
Allows the user to select the location of the BUC LO.
The user must enter the location of the BUC LO in order
for the UPLINK FREQUENCY to be displayed correctly.
The BUC LO can be either higher or lower in frequency
than the BUC output frequency. If the BUC LO is higher
in frequency then the user must enter HIGH SIDEBAND.
10 MHz BUC REF {ENABLED, DISABLED}
Allows the user to enable or disable the 10 MHz BUC
reference clock.
BUC VOLTAGE {ENABLED, DISABLED}
Allows the user to enable or disable the BUC supply
voltage.
LOW ALARM THRSH {0.00 Volts}
Allows user to select lower alarm limit/threshold for BUC
voltage.
HI ALARM THRSH {0.00 Volts}
Allows user to select high alarm limit/threshold for BUC
voltage.
LOW ALARM THRSH {0.00 Amps}
Allows user to select lower alarm limit/threshold for BUC
current.
HI ALARM THRSH {0.00 Amps}
Allows user to select high alarm limit/threshold for BUC
current.
ADDRESS Allows user to enter the BUC address to establish
FSK communications between the modem and BUC.
(Only available when the FSK Comm is Enabled)