M542's - £25 Chinese or £45 Leadshines?

[fastpart]

I bought a Chinese 542 driver connected and set as instructions and it was hopeless it stepped a different amount in each direction I complained and after exchanging several e mails they sent a replacement it works but steps a different amount to the genuine leadshine driver it also has dreadful am radio interference so beware I am now going to get a genuine driver

cheers glen

[Clive S]

I bought a Chinese 542 driver connected and set as instructions and it was hopeless it stepped a different amount in each direction I complained and after exchanging several e mails they sent a replacement it works but steps a different amount to the genuine leadshine driver it also has dreadful am radio interference so beware I am now going to get a genuine driver

cheers glen

Before you buy a new drive have you checked out the specs. Modern drive can handle up to 80v and can handle resonance much better something like am882 or the newer version EM806. What type of machine are you fitting it to? and what size motors etc?