HP J8693A lacp trunk config

[9oryn]

I have 2 procurve switches: J8693A and J8697A. Recently i was config lacp static LACP trunk between them.

from  J8693A command show lacp local show's:

                    LACP                      Tx        Rx Timer
Port Trunk Mode Aggregated Timer Expired
---- ------ -------- ----------- ------ --------
 47  Trk1  Active  Yes               Slow    No
 48  Trk1  Active  Yes               Slow    No 

but in manual: http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c03116971/c03116971.pdf

i saw that result of this command may be:

                    LACP                      Tx        Rx Timer
Port Trunk Mode Aggregated Timer Expired
----  ------   --------  -----------      ------    --------
A2    A2      Active Yes              Fast    No
A3    A3      Active Yes              Fast    No 

how can i change Tx timer from Slow to Fast and set the Rx Timer