I have not used the HP48 Survey Pro CAD for the last 10-12 years but now I have a project with the need to use it.I charged the batteries for more than 24 hours, put new batteries in the calculator and I am getting a display warning me "Invalid Data Card". Also when I go to the library of the HP, I see the word "Main" above the "A" key. When I press the Alpha Key, I get a string of choices, "Main" disappears and the string appears. If I press any key "A-E", I get a beeping sound and I cannot get the generic menu. NOTE: When I use the COGO Card, I press in Alpha Mode TDS COGO - Do I need to press a code for Survey Pro? Any advice/answers/guidance is much appreciated...Thank you...GLC..Arizona
alpha- TDS48
I think you need a ram card as well
Search the forum for "hp48gx ram card issue I think". That helped me last week.
Type "PINIT" Enter and wait.
If that does not work, pull the pad on the back and insert a paper clip.
It may also be necessary to put the cards in the opposite slot, then swap back.
All from memory.
Paul in PA
Dusting off that corner of my memory:
- Turn off 48
- remove BOTH cards
- Turn 48 on
- press (all three) ON, A, F
- release (all three)
- Try to recover memory? NO
- turn off 48
- place program card in slot 2
- turn 48 on
- alpha key (x2) T D S 4 8
- Hit enter and wait for program to install
- Turn 48 off
- Put program card in slot 1 memory card in slot 2
- Turn 48 on
- alpha key (x2) T D S 4 8
- Enter
- If everything went as planned Survey Pro should launch
