This tab allows the user to define how the software will handle angle sets, reciprocals, and direct and reverse.


- D&R: The user can choose to measure direct and reverse readings for backsight, traverse, resection, topography, or stakeout routines. If the user measures direct and reverse for the backsight readings, all foresight readings that also are recorded direct and reverse will be recorded and computed as angle sets. If the backsight reading is only measured direct, then foresight points that are measured direct and reverse are then combined to produce an average observation record for the vertical circle, which is stored in the .rw5 file as a sideshot (SS) record. For calculation purposes, the routine only averages the distances using both vertical circle readings, and uses the direct horizontal reading for the direction. Both the direct and reverse readings are stored in the .rw5 file as a note record. When disabled, (default setting) only the direct foresight shot will be taken. This option improves accuracy on elevation measurements and mimics a feature found on the SDR data collectors. The Resection D&R will also apply to Remote Benchmark.
- Reciprocal Calc: The Reciprocal Calculation option has three settings: No, Prompted, and Always. It governs the calculation of the elevation of foresight points taken with a total station, where a backsight measurement is also taken. When set to Always, the program will calculate the distance to the foresight point and delta elevation by combining the foresight and backsight measurements. When set to Prompted, the program will detect the backsight measurement and ask the user if the occupied point should be calculated using both previous foresight and current backsight. If set to No, the program calculates foresight points based only on the foresight measurement. If, for example, you had a vertical difference of +1.2 going up to the foresight, and then when you backsighted the difference was -1.0, the program would calculate the average difference (1.1) and would lower your occupied point by 0.1 “on-the-fly”, prior to conducting foresights. This is useful for multi-setup topo work, in particular, where no further adjustment is anticipated. For closed traverse or high-precision work, it is recommended that you run with Reciprocals off and use the adjustment options found in your office software or within Cogo, Process Raw File, in SurvCE. Reciprocals, because they re-calculate your occupied point by combining the backsight with the prior foresight information, should be used with care, because they will degrade the precision of the work if backsights are not precisely measured, with correct target heights.
- Reverse Face Angles Only: When taking Face 1 and Face 2 foresights, or when doing Set Collection, the program will use the distance from the direct reading only, but will use the horizontal and vertical angles from both the direct and reverse face readings. This setting is repeated and displayed within Configure in Set Collection. Any change in either location controls the setting. (Note that in Manual Total Station, you will be prompted for reverse face distance, but the entry will not be used.) When using robotic total stations which do not take distance measurements in reverse face, setting Reverse Face Angles Only is necessary to use motorized direct and reverse readings.
- Reverse Face - Auto Turn: This option if for motorized instruments only and when enabled will automatically turn the instrument to the reverse face.
- Reverse Face - Auto Read: This option will immediately take a reading after the instrument has turned to the reverse face. You must make sure that the auto targeting option is on.