Why am I getting a TGERR display at power up and losing calibration?

What is the problem when TGERR or T6ERR is briefly displayed at power up and all the calibration is lost?

On the HI 2110WI, HI 2151/30WC and the older HI 2151/20WC, when the Secure Memory Module (SMM) fails or is missing, you will receive a TGERR or T6ERR at power up.

The SMM part# for the HI 2110WI and HI 2151/30WC is 0519-0512-06.

The internal dip switch package S2-8 could be in the ON position.  You can verify that setting by running Self-Test and observing DIP2 should be = 0

The SMM for the HI 2151/20WC is no longer available.