PT 5780 DVB-T Modulator
ProTelevision Technologies
RS232 Communication
Instruction Manual
Revision 3.11
6-17
6.2.3.9
LPRecorrect (Linear Pre-corrector) commands
•
LPRecorrect:ENABle
Command to activate (ON) or deactivate (OFF) the linear pre-corrector function. Switching the
linear pre-corrector on activates the linear pre-corrector parameters in the “active” preset
location.
Example:
LPR:ENAB ON
Activate the linear pre-corrector function.
LPR:ENAB?
Response:
ON
•
LPRecorrect:COEFficient
Command to save linear pre-correction coefficients into, or read coefficients from, the “active”
location. COEFficient is defined as all coefficients from 0 to 23. <real> and <imag> are 16-bit
signed values.
Example:
:LPR:COEF 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,511,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0
Set the configuration of the coefficients in the
“active” location as shown.
:LPR:COEF?
Response:
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,511,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0
•
LPRecorrect:DESCription
Text string for identifying the “active” linear pre-correction curve, using a maximum of 30
characters.
Example:
LPR:DESC “Test 1”
Name the “active” coefficient “Test 1”.
LPR:DESC?
Response: “
Test 1”
Note that the query command returns an empty string if there have been no linear pre-correction
curves recalled.
•
LPRecorrect:USER
String data describing the user point location and the active view type for the “active” linear pre-
correction curve, using a maximum of 130 characters.
Example:
LPR:USER ”0000202020A0002020402020202040204020200040202040202020202010404
0200022102020202020202020202020202020202020202020202020201010404010"
Describes the linear pre-correction user point.
location.
LPR:USER?
Response:
”0000202020A000202040202020204
0204020200040202040202020202010404020002210202020202020202020202020202020202
0202020202020201010404010"
Summary of Contents for PT 5780
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