Dwyer DDM-01 - Manual (Page 3)

MEASURING HEIGHT (INDIRECT)
To measure the height of an object indirectly, press the Pythagorean but-
ton once to enable Pythagorean I (Single Height), twice to enable
Pythagorean II (Addition of Two Heights), and three times to enable
Pythagorean III (Subtraction of Two Heights). This setting uses the
Pythagorean theorem to find the distance between two points using a vari-
ation of methods. For all methods, the indirect measuring icon on the dis-
play will blink with which measurement needs to be taken at each time.
Single Height
This setting is used to find a distance between two points using one height.
See Figure 7 below for further clarification. First, take the measurement at
the top distance (1). Then, take the distance at the horizontal (2). The meter
will then show the distance between points 1 and 2 on the main display.
Addition of Two Heights
This setting is used to find the distance between two points using the addi-
tion of two heights. See Figure 8 below for further clarification. First, take
the measurement at the top height (1). Then, take the horizontal mea-
surement in between the two heights (2). Last, take the measurement at
the bottom point (3). The meter will then show the distance between points
1 and 3 on the main display.
Subtraction of Two Heights
This setting is used to find the distance between two points using the sub-
traction of two heights. See Figure 9 below for further clarification. First,
take the measurement at the top height (1). Then, take the measurement
at the second height (2). Last, take the measurement at the horizontal (3).
The meter will then show the distance between points 1 and 2 on the main
display.
MEASURING IN BRIGHT AREAS
The working range and accuracy of the meter depend on how well the ener-
gy of the laser is reflected from the surface of the target back to the receiv-
ing window of the meter. When using the distance meter in bright ambient
areas, it may help to use a white target to increase the working range and
the stability of accuracy.
MEMORY RECALL
The meter includes a memory recall function that stores the last 20 mea-
surements. To look up the records, press and hold the memory button until
the memory is shown on the display. Press the add button to move up the
list, and the subtract button to move down the list.
BACKLIGHT
To turn the backlight on and off, press and hold the backlight button.
LASER POINTER
To turn the laser pointer on and off, press and hold the laser pointer but-
ton. This will cause the laser icon to display on the screen.
ERROR CODES
Occasionally, the meter will display that an error has occurred. Refer to
Table 1 below if an error message is shown on the meter.
MAINTENANCE/REPAIR
Upon final installation of the Model DDM-01, no routine maintenance is
required besides changing the batteries. The Model DDM-01 is not field
serviceable and should be returned if repair is needed. Field repair
should not be attempted and may void warranty.
WARRANTY/RETURN
Refer to “Terms and Conditions of Sale” in our catalog and on our
website. Contact customer service to receive a Return Goods
Authorization number before shipping the product back for repair. Be
sure to include a brief description of the problem plus any additional
application notes.
Figure 7
Figure 8
Figure 9
Code
Err01
Err02
Err03
Err04
Err05
Err06
Err07
Description
Out of Measuring Range
Reflected Signal is Too Weak
Out of Display Range
Pythagorean Calculation Error
Low Battery
Out of Working Temperature
Ambient Light is Too Strong
Solution
Measure in a Proper Range
Select a Better Surface
Divide Calculation into
Intermediate Steps
Check and Verify Values and
Steps are Correct
Install a New Battery
Measure in an Environment
Within Specified Working
Temperature
Measure in a Darker Place or
at a Darker Time
Table 1