3
rd
Generation Compact RDMS
TM
Telemetry Receiver
54
Quasonix, Inc.
IF filters may be set to automatic based on the bit rate or the second IF filter may be set to a value based on a filter
index.
IF [A|<s>|F <f>]
- Sets IF filter control
A - Sets IF filter selections to automatic based on bit-rate
<s> - Sets second IF filter to <s>
where: <s> - Filter index
The
IF A
command sets the IF filter selections to automatic based on bit rate.
IF x
sets the second IF filter to one of the filter index values listed below:
•
0 - 70 kHz
•
5 - 2.0 MHz
•
10 - 14.0 MHz
•
1 - 250 kHz
•
6 - 3.0 MHz
•
11 - 20.0 MHz
•
2 - 500 kHz
•
7 - 4.5 MHz
•
12 - 28.0 MHz
•
3 - 1.0 MHz
•
8 - 6.0 MHz
•
13 - 40.0 MHz
•
4 - 1.4 MHz
•
9 - 10.0 MHz
•
14 - OPEN
IF F x
sets the first IF filter to one of the filter index values below:
•
0 - 12.0 MHz
•
1 - bypassed
Examples:
IF
Auto IF filter select enabled
First IF filter (0) 12.0 MHz
Second IF filter (5) 2.0 MHz
IF F 0 Sets the first IF filter to 12.0 MHz
IF 9
Sets the second IF filter to 10.0 MHz
4.3.2.25 Low Density Parity Check
– LDPC
The LDPC command displays and controls Forward Error Correction settings.
LDPC [M <m>|A <t>|I <s>]
M <m> - Sets LDPC mode to <m>. LDPC mode is stored and transferred if the (waveform) Mode changes.
where: <m> - LDPC Mode
4k1 – 4k Rate 1/2
1k1 – 1k Rate 1/2
4k2 – 4k Rate 2/3
1k2 – 1k Rate 2/3
