FULL CLOSED TRAVERSE ADJUSTMENT
Lets say that you started by occupying #101 and backsighting #1. You then traversed through points 102, 103, 104 and 105 (105 is the same point, but not the same coordinates, as 101). Complete the angle closure by turning the 104-105-106 angle, where 106 is the same point as #1.
To determine precision in the SURVEY ADJUSTMENT-COMPASS RULE program, enter point numbers 101-105. Then press "PRECI", but DO NOT at this point press "Solve". Record the precision for later bragging rights on your plat certificate.
To adjust the traverse, first exit "COMPASS RULE" and go to "COGO-INVERSE BY POINTS". Inverse from #101 to #1 and write it down. Inverse from #105 to #106 and write this down under the first bearing. Subtract the two, which should give you a plus or minus of 0 to 20". Analise your final bearing to see if it is short or long in relation to angle right. If it is short you have a minus error. If the second is larger than the first you have a + error. Change the sign and you have your angle adjustment to be prorated over all of the angles
Now go to "SURVEY ADJUSTMENT - ANGLE ADJUSTMENT". This time you enter points #1, 101, 102, 103, 104, 105 and 106. There are seven points but really only five angles, and one of these was turned twice. At "ANGLE ERROR" enter your angle adjustment with the appropriate plus or minus (In the TDS Survey Pros that I have seen the screen prompt calls for "Angle err" but they really want the angle adjustment).
. Press solve. Go back to "COGO-INVERSE BY POINTS" and inverse from 105-106. This should now match 101-1. (If instead the error is twice as much, you used the wrong sign in front of the angle adjustment value. In which case go to "SURVEY ADJUSTMENT - ANGLE ADJUSTMENT", double the value, and hit solve again, this time using the opposite sign. Check the inverse again.
Now you are ready to use the "SURVEY ADJUSTMENT-COMPASS RULE" program by entering points #101, 102, 103, 104 and 105 and pressing solve. Now Inverse between 105 and 101, and if you find all zeros you are fully adjusted.
This is all TDS Survey Pro on the HP 48gx. (Why would anyone use anything else?)