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DISH SETUP: Single sat, Multi-Sat & Motorised
Major Catastrophe ...
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<blockquote data-quote="Vipersan" data-source="post: 938121" data-attributes="member: 325666"><p>Well ..I guess I can start looking again for this discrepency ...</p><p>Did another experiment this morning..</p><p>Put a paint marker on the mag wheel edge with carl at 1W ...and a second paint line on the reed for reference ..</p><p>Sent the dish to 28E ...and back to 1W ..the marks closely aligned ...then sent the dish to 30W and back ..</p><p>Again the marks closely aligned ...</p><p>but how about single stepping ??</p><p>I single stepped until the line on the wheel reappeared ..</p><p>It turned out to be 4 clicks ...therefore 4 magnetic hotspots on the mag wheel..</p><p>Ok we are now dealing in multiples of 4 ..</p><p>So took a snap of this error and went on to 8 and then 16 ..</p><p>Same amount of error roughly ....in both cases ..</p><p>So in conclusion ...I was right about the pulse length being a factor but only when in close proximity (within 4 clicks of the target)</p><p>Not over distance where the errors appear to average out ...being accurately counted within that 4 click frame ...thus returning to almost the same spot..</p><p>This is fixed ...and in conclusion any minor error can only really be within 4 clicks</p><p>Single stepping will show small errors within this 4 click window ...but can correct themselves over distance</p><p>Which I guess is why the target lands close but needs fine tuning on a big dish at Ka once landed..</p><p>any greater errors than 4 clicks wide must be within the motor/dish structure.</p><p>Comments welcomed.</p><p>rgds</p><p>VS</p></blockquote><p></p>
[QUOTE="Vipersan, post: 938121, member: 325666"] Well ..I guess I can start looking again for this discrepency ... Did another experiment this morning.. Put a paint marker on the mag wheel edge with carl at 1W ...and a second paint line on the reed for reference .. Sent the dish to 28E ...and back to 1W ..the marks closely aligned ...then sent the dish to 30W and back .. Again the marks closely aligned ... but how about single stepping ?? I single stepped until the line on the wheel reappeared .. It turned out to be 4 clicks ...therefore 4 magnetic hotspots on the mag wheel.. Ok we are now dealing in multiples of 4 .. So took a snap of this error and went on to 8 and then 16 .. Same amount of error roughly ....in both cases .. So in conclusion ...I was right about the pulse length being a factor but only when in close proximity (within 4 clicks of the target) Not over distance where the errors appear to average out ...being accurately counted within that 4 click frame ...thus returning to almost the same spot.. This is fixed ...and in conclusion any minor error can only really be within 4 clicks Single stepping will show small errors within this 4 click window ...but can correct themselves over distance Which I guess is why the target lands close but needs fine tuning on a big dish at Ka once landed.. any greater errors than 4 clicks wide must be within the motor/dish structure. Comments welcomed. rgds VS [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Major Catastrophe ...
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