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TPL0501-100: Rheostat Mode use issue

Part Number: TPL0501-100

Hi Sir,

the currently schematic is HA/LA/WA 3 pin are all floating, but measuring the impedance between HA and WA pin always is 99k Ohm, when i command 0x03. what's the problem? different command 0x60 will also get 99k ohm.

The command is 0x30 and 0x60, should is 81.25k ohm and 62.5k ohm. right?

is there a problem with the following command? may i learn and suggestion from you, thanks.

0x30:

0x60: