iqdump between GTM and LTM

Good day,

 

How often is the configuration information from a server object such as an LTM sent over iquery to the GTM. I ran the iqdump and can see the getconfig xml information. It seems to be every minute but would just like to make sure.

 

I know the auto discovery option from the DC in GTM configuration retries every 30 seconds and if iquery fails it retries every 10 seconds. However I can't seem to find how often the XML information is sent from LTM to GTM

 

Thanks