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  1. Witchaven

    Getting NPR502 when trying to IDU a TN

    Hi, I'm trying to determine if there is a set plugged in to a particular TN, so I tried to use the IDU command from LD32 and LD20, but it's returning an NPR502 message for any digital TNs that I try. Running ERR NPR502, returns the following description: NPR0502 No call registers available for...

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