User manual

MRD 3187B User Manual
Page 67
AdvPSK 2-2
DVB Mode: DVB-S
► Freq: 1390.0 MHz
Sym Rt: 30.0000 MSps
AdvPSK 2-2
Input B
► Mod:Adv QPSK 2/3
Freq:01250.0 MHz
AdvPSK 2-2
Freq:01250.0 MHz
► LO Off:00000.0 MHz
SymRt:00.000000MSps
AdvPSK 2-2
Freq:01250.0 MHz
LO Off:00000.0 MHz
► SymRt:00.000000MSps
1. Use the and buttons to move the
cursor to, “Mod:” then press the button.
2. Use the and buttons to select
(DVB-QPSK, Adv QPSK, or 8-PSK),
then press the button to save the
selection.
Frequency B
The ASM card tunes by the L-band frequency rather than the transponder frequency or
local oscillator value. The L-band frequency is the difference between the downlink
transponder frequency and the LNB local oscillator frequency.
1. Use the and buttons to move the
cursor to, “Freq:” then press the
button.
2. Use the and buttons to select the
column to edit and use the and
buttons to change the frequency (950MHz –
2150MHz), then press the button to
save the selection.
Local Oscillator Offset
The ASM card offers an offset for the Local Oscillator frequency. This means that the
MRD will calculate the actual frequency in which the card tunes; saving the user time
and possible miscalculation errors. Follow the steps below to change the offset or set to
zero for manual calculation.
1. Use the and buttons to move the
cursor to, “LO Off:” then press the
button.
2. Use the and buttons to select the
column to edit and use the and
buttons to change the Local Oscillator Offset,
then press the button to save the
selection.
Symbol Rate B
1. Use the and buttons to move the
cursor to, “SymRt:” then press the
button.
2. Use the and buttons to select the
column to edit and use the and
buttons to change the symbol rate.
3. Then press the button to save the
selection.