Comtech EF Data LBC-4000 Installation And Operation Manual page 132

Command Arguments for
Parameter (Instruction
Type Code and
Qualifier)
Spectral SPI_ 5 bytes,
Inversion numeric
Reference SRO_ 3 bytes,
Oscillator numeric
Adjustment
Slope SSA_ 5 bytes,
Adjustment alphanumeric
Level
Serial Interface Operation
Description of Arguments
Command or
(Note that all arguments are ASCII
Response to
numeric codes between 48 and 57)
Query
Command or Query.
Use "SPI" to set or return the Spectral Inversion for the selected
module.
Set or return in the form SPI_y_xxx where:
y=A (Conv A)
y=B (Conv B)
xxx=NRM (Normal spectrum)
xxx=INV (Inverted spectrum)
Command Example:
<0001/SPI_A_INV{cr} (Set Conv A to Inverted spectrum)
Command or Query.
Use "SRO" to set or return the reference oscillator adjustment level.
Set or return in the form SRO_xxx where:
xxx=value from 000 to 255 (Resolution=001)
Note: This command is not valid (SRO cannot be adjusted) when
the unit is locked to an external reference source.
Command or Query.
Use "SSA" to set or return the converter slope adjustment level.
Set or return in the form SSA_y_x.x where:
y=A (Conv A)
y=B (Conv B)
x.x=slope adjustment value from 0.1 to 1.0 in 0.1 steps
Command Example:
<0001/SSA_B_0.3{cr}
(Sets Converter B slope adjustment level to 0.3)
LBC-4000 L-Band Up/Down Converter System
8–22
Revision 6
Response to Query Response to
Command (Instruction Query
(Target to Code and (Target to
Controller) Qualifier) Controller)
SPI_ SPI_y_xxx
SPI_
SRO_ SRO_xxx
SRO_
SSA_ SSA_xxx
SSA_
MN-LBC-4000