AEA HF Analyst - LCD graphing SWR meter (HF only)

Description

AEA HF Analyst - LCD graphing SWR meter (HF only). Condition is "For parts or not working". Shipped with USPS Priority Mail or UPS.
Bought this from Burghardt years ago, but it's had little use recently ... so needs to go. Good physical condition. It's in an AEA box, but not the original (a different AEA product). Battery slots are clean & free of corrosion. No extras, no book, no batteries included.  EDIT 1 :  I tried to select "Universal" for the compatibility data, the listing wouldn't fly, so I just clicked a bunch of non-ham brands to get the listing up. That said, the compatibility is universal, it will check SWR of HF antennas, no particular brand.
ON/OFF works. HOLD/RUN works. Screen displays width value & WIDTH adjust up/down works. Screen displays frequency, FREQ adjust up/down & direct entry works (tested on all HF bands). Did plots of: 1) dummy load, 2) 75m "L (on 75m), and 3) 40m "L" (on 10m) and got SWR values close to expected. Takes 8 AA batteries or an external supply. I ran it on batteries, I never tested the external supply jack or serial interface.
"FREQ up + RUN" and "FREQ down + RUN" seemed to not move to the lowest SWR frequency as the back side instructions indicate it should. RL value displayed seems off (DVM says dummy load is 54 ohms, the Analyst says it's 24 ohms (but SWR is the focus of the device, it's not a high end VNA).
So, I'm gonna say the basics work but the more esoteric functions are questionable (some could be op error by me). Therefore sold as parts or not working.