Frequently Asked Troubleshooting Questions

Baseline

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During baseline, the SPS failed to initialize. What is the appropriate corrective action?

During baseline, no GPS data after waiting more than 3 minutes. What is the appropriate corrective action?

At baseline the pressure discrepancy is out of tolerance (+/- 5 hPa) or the data is unrealistic.

 

 

Question:During baseline, the SPS failed to initialize. What is the appropriate corrective action?

Answer:If the SPS will not initialize.

1. Verify TRS is tuned to radiosonde frequency and AFC is ON.

2. Verify TRS is pointed toward the baseline Azimuth and Elevation.

a. The Signal Strength should be strong.

3. Cycle power on the radiosonde.

a. Disconnect the battery wires, Red (Positive) wire first.

b. Wait at least 30 seconds.

c. Then reconnect the battery wires, Black (Ground) wire first.

4. Click the Wait Again button.

a. Wait 3 ½ minutes. If the SPS still will not initialize.

5. Cycle power on the UPS in the Hardware Status. (To perform a hard reboot of the SPS)

a. Click the On/Off UPS button.

b. The Hardware Status indicates the UPS Power Off.

c. Click the On/Off UPS button.

d. The Hardware Status indicates the UPS Power On.

e. Retune and Reposition TRS with AFC On.

6. Click the Wait Again button.

a. Wait 3 ½ minutes. If the SPS still will not initialize.

7. Click the Abort button.

8. Use a new radiosonde. If the SPS still will not initialize.

9. Contact an electronics technician and enter problem into EMRS.

Reference: RRS User Guide Appendix E 2.3

 

Question: During baseline, no GPS data after waiting more than 3 minutes. What is the appropriate corrective action?

Answer: If the SPS initializes, but there is no GPS data. If there are no satellites for the radiosonde.

1. Verify the TRS is tuned to radiosonde frequency and AFC is ON.

2. Verify the TRS is pointed toward the baseline Azimuth and Elevation.

a. The Signal Strength should be strong.

3. If the radiosonde begins to acquire satellites;

a. Wait to see if it acquires 4 or more matches. If there are still no satellites for the radiosonde.

4. Cycle power on the radiosonde.

a. Disconnect the battery wires, Red (Positive) wire first.

b. Wait at least 30 seconds.

c. Then reconnect the battery wires, Black (Ground) wire first.

5. If the radiosonde begins to acquire satellites;

a. Wait to see if it acquires 4 or more matches. If there are still no satellites for the radiosonde.

6. Click the Reject button.

7. Reject the radiosonde and try new radiosonde.

Reference: RRS User Guide Appendix E 2.4

Question: At baseline the pressure discrepancy is out of tolerance (+/- 5 hPa) or the data is unrealistic.

Answer:

If the data is out of tolerance or unrealistic.

1. Cycle power on the radiosonde.

   a. Disconnect the battery wires, Red (Positive) wire first.

   b. Wait at least 30 seconds.

   c. Then reconnect the battery wires, Black (Ground) wire first.

If the data is still out of tolerance or unrealistic.

1. Click the Reject button.
2. Reject the radiosonde and try new radiosonde.

 

RRS User Guide Appendix E