Hi all,

We are trying to send 4 synchronous signals from the 4 Tx ports of the N310.
We are using UHD 3.13.1.0 RC1 under Ubuntu.
Central Freq = 1575.42 GHz and 1227.6 MHz
Master Clock rate = 153.6 MHz

We would expect to have less than 3ns offset between all TX ports of the
N310, like we do with the X300/X310. However, we have measured 4700ns
between TX RF ports 0 and port 2.
We have tried the next things with no more success:
- Sampling rates of 25.6MSps, 38.4Msps, 76.8Msps
- Init with the device options "init_cals=ALL" and "force_reinit=1"
- Use the internal GPSDO
- Use clock_source=external and time_source=external (from an Octoclock).

Can you tell us:
-What time offset between TX RF ports we should expect to achieve?
-Is there anything else we can try to reduce this offset to less than 3ns?

Best regards,
Serge
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