SDR33 The SDR33 does not compromise on its features. With the Expert software as outlined below plus the ability to integrate with other manufacturers Total Stations, you know you have a fine machine. Even though the SDR33 is designed to hook up to Total Stations and Digital Levels it can be optioned up to handle GPS. The casing is designed to handle a drop onto concrete from a height of 1.5 metres. It also can handle excessive rain and dusty enviromrnts. I have seen these units being used by those who prefer to use an external Data Recorder rather than the Built-In version on a Total Station like found on the Powerset. It is purely a personal preference rather than a technical advantage. The alpha and numeric characters each have their own key and so do the function buttons. This feature is time saving as it totally eliminates any additional button pressing required to carry out data entry as found on other Data Recorders. You can install your own program with the help of an optional programming software. However, I have only heard of one person ever purchasing the software as the on-board software caters for 99% of all users.

Size 19.8L X 8.9W(head) X 4.4D cm Weight 0.74 kg including batteries Power Dual 9-volt alkaline batteries are standard (NiCd cell optional) Power Backup Dual Lithium RAM backup for 400+ hours data preservation CPU V25 16 bit with 8 MHz clock speed Operating System RAM resident DR-DOS Keyboard 56-key alphanumeric, water and dust resistant latex Display Supertwist (STN) 8-line X 20-character backlit display with graphics support ROM Memory 256K "flash" EPROM; can be reprogrammed without removal Interface Ports Top: RJ41 with limited RS232 (nine pin) Bottom: DB25 with full RS232 (twenty-five pin) Operating Temperature -20C to +50C Memory Capacity 640KB, 1MB, 2MB or 4MB Important Note: Always leave your 9 Volt Batteries in the machine even if they are "Dead". The SDR will use whatever is left in those batteries before using the Back up batteries thus preserving your SDR setup and data longer.

SOFTWARE The SDR33 supports several "setting out" methods of staking out points on lines, arcs and parallel offsets. With the Taping from Baseline feature, you can pick up detail by distance and offset from a predefined baseline. The Slope Staking function is streamlined and easy. The Traverse Adjustment feature can be used with traverse data collected in either Set Collection or Topography. 3-D traverse data can be collected in any manner, including non-consecutive set-ups. The SDR33 can then do some of the thinking for you, like calculating precision and errors of closure, adjust traverse and angle or elevation adjustment. The Topography program helps increase data validity by automatically calculating and displaying the difference in observed positions. When a point is observed more than once, you may choose to replace the old observation, store the new observation under a different point number, or average the two observations for a stronger result. Differences are keyed by user-defined tolerance settings. The Control Job feature lets you mark a job which contains control point information. If ou try to recall the coordinates of a control point and the point isn't in the current job file, the control job file is accessed for optimum convenience. Roading is accomplished by loading or keying in the horizontal and vertical alignment and template information into the SDR33. When you tell it what stationing and offset or coordinate point you wish to set out, the SDR33 will give you angles and distances to set out that point in 3-D. Horizontal and vertical offsets and checking of roads under construction may also be easily accomplished with this program. *String Road Setting Out lets you load design data from a road design package (such as Sokkia ROADING Software) and set them out by name of string, station and offset. Superelevation parameters are user-defined. Left and right definitions and calculations are independent of each other. COGO features like setting out coordinates, resection and inverse are also included. The SDR33 interpolates elevations linearly and allows you to check pipe grades and alignments. Plus, it's easy to subdivide lines and arcs or calculate point projections. The Leveling program eliminates transcription and math errors; no more manual note taking. Can be used in manual mode or with Sokkia's SDL30 Digital Level. Reciprocal Vertical Calculations improves the accuracy of your elevations.