Operating instructions

DMD20/DMD20 LBST Universal Satellite Modem User Interfaces
TM103 – Rev. 2.8 4-19
RS RATE {Refer to Table 3-1 for standard n/k values}
Displays the currently used n, k Reed-Solomon Codes.
In Closed Net Mode and using the appropriate hardware,
the user may select custom R-S Codes.
INTERLVR DEPTH {4, 8, 12}
Allows the user to select the Reed-Solomon interleaver
depth.
ODU-LNB (menu)
LO FREQ (MHz) Allows the user to enter the Local Oscillator frequency in
MHz in order for the downlink frequency to be displayed
correctly (refer to the LNB manufacturer’s
specifications).
OSC SIDE BAND {LOW SIDEBAND, HIGH SIDEBAND}
Allows the user to select the location of the LNB LO.
The user must enter the location of the LNB LO in order
for the UPLINK FREQUENCY to be displayed correctly.
The LNB LO can be either higher or lower in frequency
than the LNB output frequency. If the LNB LO is higher
in frequency then the user must enter HIGH SIDEBAND.
10 MHz LNB REF {ENABLED, DISABLED}
Allows the user to enable or disable the 10 MHz BUC
reference clock.
VOLTAGE SELECT {13 VDC, 15 VDC, 18 VDC, 20 VDC}
Allows the user to select the voltage required by the LNB
(refer to the LNB manufacturer’s specifications).
LNB VOLTAGE {ENABLED, DISABLED}
Allows the user to enable or disable the LNB supply
voltage.
LOW ALARM THRSH {0.00 Volts}
Allows user to select lower alarm limit/threshold for LNB
voltage.
HI ALARM THRSH {0.00 Volts}
Allows user to select high alarm limit/threshold for
LNBvoltage.
LOW ALARM THRSH {0.00 Amps}
Allows user to select lower alarm limit/threshold for
LNBcurrent.
HI ALARM THRSH {0.00 Amps}
Allows user to select high alarm limit/threshold for LNB
current.