A New South Wales chiropractor who made abusive and racist comments about former Labor senator Nova Peris has been given an eight-month suspended jail sentence.

Chris Nelson, 64, had earlier admitted to using Facebook to post the remarks, despite first saying his account had been hacked.

Nelson was sentenced at the Woy Woy Local Court on the state's Central Coast, where he faced a maximum penalty of two years in prison.

Instead he received the suspended sentence, was ordered to pay $2,500 and placed on a two-year good behaviour bond.

Nova Peris after she spoke about her departure from politics earlier this year. ( Fairfax Media: Alex Ellinghausen, file photo )

Among the comments he posted was: "Go back to the bush and suck on witchity [sic] grubs and yams."

"You were only endorsed by Juliar because you were a black c***," the comments read.

In sentencing him, the magistrate said the posts were "clearly offensive not only to Nova Peris but the Australian community".

The magistrate said there was no justification for his actions and described Ms Peris as a person with a high profile who had made an outstanding contribution to the community.

In a statement, Ms Peris said: "[The sentence] sends a strong and important message to others who use social media to disseminate such vile and racially abusive comments."

The abuse made reference to Senator Peris' Indigenous heritage.

Ms Peris who did not re-contest her Senate seat this year, also thanked Australians of "all backgrounds races and religions" who had supported her speaking out about the abusive social media posts.

"When you attack me, you attack my children, you attack my family.

"You also attack the minority groups who also feel the pain of these deep seated racist and venomous barbs," Ms Peris added in her statement

On her own social media accounts, Ms Peris labelled the comments as "racist and vile hatred".

She said she would always call out racism and said no-one had a right to make anyone else feel threatened or discriminated against.

At sentencing, Nelson's lawyer said his client's conduct was out of character and he had been unaware of its far-reaching implications.

Nelson, who had been the secretary of the Woy Woy (Peninsula) Branch of the Liberal Party, was expelled after his arrest.

His lawyer said Nelson and his family had been shamed and his chiropractic/osteopathy business had become a shadow of what it once was.

Nelson had already been on a 12-month good behaviour bond for mid-range drink-driving and that was factored into the sentence.

In court, Nelson showed no emotion and refused to speak to reporters on his way out.

The court was told a letter of apology would be sent to Ms Peris.