AERONET Instrument Troubleshooting Interface - Solutions for DCP CLOCK SHIFT Flag

Description
The DCP satellite transmitter embeds a timestamp in each outgoing message. If the transmitter's internal clock drifts, AERONET will detect a mismatch between the expected transmission time and the received timestamp. This is a transmitter-level issue distinct from the Cimel clock shift, and is typically caused by a malfunctioning transmitter rather than a dead battery.

Condition(s)
Flag if shift >10 seconds and give the time difference from reference in the latest transmission

How To Check/Test
Select appropriate Platform ID and find instrument here.

Solution Level 1 (< 5 minutes)
1. Check/reseat connections around transmitter.
2. Ensure that the transmitter is receiving adequate 12V power.
3. Ensure there are no obstructions in the antenna's field of view.

Solution Level 2 (more involved)
1. Ensure antenna is oriented properly.
2. Evaluate transmitter LED indicator.

Solution Level 3 (last resort)
1. Repair or replace transmitter.