thermionic
Well-known member
- Joined
- Jun 3, 2004
- Messages
- 1,671
Hi,
Has anyone here worked with the HP / Avago HEDS-9000-series (Sensor) and HEDS-5000-series (Codewheel) combination?
The reason I ask is that I’m involved in a project that uses this combo and we’re having issues with dropouts in the quadrature output waveform. The waveform on our 'scope looks nowhere near as clean as the one in the HP / Avago datasheet...
We have 4 different codewheels and 1 sensor (9100). They are sensitive to alignment, so we’re using both the alignment tools, for height and radius.
This product range has been in production for quite some time and I can’t envisage it being so if it’s as finicky about setup as it appears to be…
The engineer I’m working with (someone who knows a hell of a lot more about digital than myself!) can only suggest that it could be a faulty / static-damaged sensor (considering this is the first one we’ve purchased, from a statistical failure rate POV, it wouldn’t bode well if this were the case…).
HP / Avago’s technical support in the UK for this product line is pretty much non-existent by the looks of it. The staff we’ve spoken to have been helpful, but lacking in the specialist info we require for this range.
Has anyone here used this product-line? Not only have we checked alignment with the Avago-supplied gauges, but my associate checked the x/y coordinates via the digital meters on his mill – confirming supposedly perfect alignment in both axes…
From what I’ve seen, the Bourns optical encoders seem more popular in audio, but the resolution isn’t great (max 64 CPR?) and they’re expensive. The HP / Avago codewheel / sensor combo seems to get most use in electrical motor / position sensor (in theory, would make a superb coil winder…) apps, so one would tend to expect it to be rugged… Is there an elephant in our room that we can’t see?
If anyone could make a suggestion I’d be very grateful.
Thanks in advance,
Justin
Has anyone here worked with the HP / Avago HEDS-9000-series (Sensor) and HEDS-5000-series (Codewheel) combination?
The reason I ask is that I’m involved in a project that uses this combo and we’re having issues with dropouts in the quadrature output waveform. The waveform on our 'scope looks nowhere near as clean as the one in the HP / Avago datasheet...
We have 4 different codewheels and 1 sensor (9100). They are sensitive to alignment, so we’re using both the alignment tools, for height and radius.
This product range has been in production for quite some time and I can’t envisage it being so if it’s as finicky about setup as it appears to be…
The engineer I’m working with (someone who knows a hell of a lot more about digital than myself!) can only suggest that it could be a faulty / static-damaged sensor (considering this is the first one we’ve purchased, from a statistical failure rate POV, it wouldn’t bode well if this were the case…).
HP / Avago’s technical support in the UK for this product line is pretty much non-existent by the looks of it. The staff we’ve spoken to have been helpful, but lacking in the specialist info we require for this range.
Has anyone here used this product-line? Not only have we checked alignment with the Avago-supplied gauges, but my associate checked the x/y coordinates via the digital meters on his mill – confirming supposedly perfect alignment in both axes…
From what I’ve seen, the Bourns optical encoders seem more popular in audio, but the resolution isn’t great (max 64 CPR?) and they’re expensive. The HP / Avago codewheel / sensor combo seems to get most use in electrical motor / position sensor (in theory, would make a superb coil winder…) apps, so one would tend to expect it to be rugged… Is there an elephant in our room that we can’t see?
If anyone could make a suggestion I’d be very grateful.
Thanks in advance,
Justin