NRF51 Timer 2 accuracy

[Ron]

I'm using PPI to trigger a gpio high after a given delay from 4.00 ms to 8.00 ms. I need to be accurate up to .01 ms but i'm seeing some jitter in the actual delay vs given delay. Is there any way I can ensure I can be accurate to .01 ms?

[Ron]

At what point would be best to start this? I am using bluetooth as well. I have the following before i start advertising and start my application loop.

sd_clock_hfclk_is_running(&err_code);

if (!err_code) {
    sd_clock_hfclk_request();
}