What are IMPs clock speeds?

General
1

I’m using a demodulator with internal clocks of 125kHz and 1MHz and the output is sensitive to power supply noise in those frequencies. As long as IMP clocks are <30kHz from 125kHz and 1 MHz the interference will be filtered away. Is IMP clock speed (or harmonic) less than 30kHz away from 125kHz and 1 MHz?

2

The imp external xtal is 24MHz (imp001/2) and 26MHz (imp003). It’s PLL’ed up internally to 120MHz (imp001/2) and 144MHz (imp003).

You’re going to see subharmonics at 1MHz…