User's Guide for Electronic Levels

By National Oceanic and Atmospheric Administration

Book Id: WPLBN0000697355
Format Type: PDF eBook
File Size: 3.23 MB.
Reproduction Date: 2005

Title:	User's Guide for Electronic Levels
Author:	National Oceanic and Atmospheric Administration
Volume:
Language:	English
Subject:	Science., Ecology & environment, National Oceanic and Atmospheric Administration (U.S.)
Collections:	National Oceanographic Data Center
Historic Publication Date:
Publisher:	Government Reference Publication


Citation APA MLA Chicago And Atmospheric Administration, N. O. (n.d.). User's Guide for Electronic Levels. Retrieved from http://gutenberg.cc/

Excerpt
Excerpt: USER'S GUIDE FOR ELECTRONIC LEVELS. This document provides the standards and procedures required to perform vertical control levels with the electronic digital/barcode leveling systems at water level stations. It is intended to supplement the User's Guide for the Installation of Bench Marks and Leveling Requirements for Water Level Stations (User's Guide). This document only addresses those standards and specifications that differ from conventional three wire level methods covered by the User's Guide. Electronic leveling performed at water level stations shall adhere to Federal Geodetic Control Subcommittee (FGCS) Standards and Specifications. Any requirement not addressed can be assumed to be unchanged. Reference is made in this document to Input Formats and Specifications of the National Geodetic Survey Data Base (NGS Bluebook), September 1994.

Table of Contents
TABLE OF CONTENTS Page# 1 Standards and field procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Use of even number of stations for multiple rods . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Differences with previous methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A Use of the multiple reading option to obtain each observation . . . . . . . . . 1 B Use of single run section leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 C Use of DESC program for bench mark descriptions . . . . . . . . . . . . . . . . . 2 2 Guidelines for using the NGS Bench Mark Description Program . . . . . . . . . . . . . . . . . . . 3 2.1 The NGS DESC program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 The Data Set Information Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.3 The Geodetic Control Station Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.4 The Descriptive Text Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3 Procedures for leveling with the Wild NA3000 series . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.1 Configuration Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.2 Battery Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.3 Run Rod Level Bubble and Level Collimation Checks . . . . . . . . . . . . . . . . . . . . 15 3.4 Erase REC-Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.5 Enter the initial CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.6 Run the START LEVELING program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.7 Use the CONT(inue) LEVELING program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.8 Special functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.9 Potential problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4 Downloading and processing leveling data from the Wild NA3000 series . . . . . . . . . . . 24 4.1 Download the leveling data to a PC or diskette . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.2 Edit the XXXXXXX.IN file to correct or remove any known mistakes . . . . . . . 25 4.3 Process the level data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Appendix A - Programs Required on Personal Computer (PC) . . . . . . . . . . . . . . . . . . . . . . . A-1 Appendix B - CHECK-IN.EXE Program Error Message List . . . . . . . . . . . . . . . . . . . . . . . . . B-1 Appendix C - Transferring NGS Data Sheets to Create a Level Disk . . . . . . . . . . . . . . . . . . . C-1 Appendix D - Preparing Vertical Data for Submission to NGS . . . . . . . . . . . . . . . . . . . . . . . D-1 Appendix E - User's Guide for Writing Bench Mark Descriptions for Electronic Levels . . . . E-1 Appendix F - Chapter 6 and 7 of VFPROC User's Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1