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Insert the program card into the reader, the display will show "Set Address: 0**" - Remove the program card. The display will begin flashing a zero followed by 2 asterisks.
The action of changing the address uses a series of short and long card 'dips'. The flashing character represents the character in focus and which is currently set-able. Inserting and removing the card quickly (short dip) will increase the value of the character by one. Inserting and leaving the card inserted (long dip) will change to the next character in the address. Using this sequence of 'dips' will set the address to the desired value.
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