How to use Leica DISTO™ E7400x aka X310

This is infrequently used content, but to expand accessibility to a wider audience we are using a machine for translation. Please excuse any unanticipated translation errors. -Thank you, Leica Geosystems.​

Operation of Lieca DISTO™ E7400X can be found in the following document (click here)

Switching ON and OFF

  • The red Dist on key displayed here switches on the instrument and the laser in a single press.
  • Pressing the Clear off button for 2 seconds switches the instrument off. Also the instrument switches off automatically after 3 minutes of inactivity.

Other Operations of the Device


  • Beep on/off – Press  keys simultaneously for 2 seconds.
  • Illumination on/off – Press  & keys simultaneously for 2 seconds.
  • Keypad lock on/off – Press  &  keys simultaneously for 2 seconds to lock the keypad. To unlock,  press  within 2 seconds after switching on the device or the device switches off on its own.

 

Adjusting Measuring Reference/Tripod
Disto E7400X is provisioned to measure the distance from the front, back or the tripod thread of the device.

  • Each time the device is switched on, the display shows the default or the standard mode as  which means that the distance is being measurement is from the back of the device.

 You can further change the setting by pressing  to adjust the mode to either

  •  - Measurement from the front of the device or
  •  - Measurement from the tripod thread of the device.

 

Timer (Self trigger) or Auto release
Timer is used for self triggering the measuremnt once the laser is activated. The delayed release through the timer is recommended for precise aiming e.g. at long distances. As it avoids shaking of the device when pressing the measurement key.

  • To set the timer, press the key once. The timer symbol appears on the display as and the countdown starts automatically if the laser is active. The timer has a preset setting of 5 seconds and the delay can be adjusted to maximum of 60 seconds.
  • You can increase and decrease the number of seconds by pressing  & .
  • Long pressing the timer key increases the rate of change of the values.

 

Memory
The device stores last 20 results by default.

  • To view the results press the   navigate through last 10 readings with help of  &  keys.
  • To delete the memory records press  & the  together for 2 seconds and the device is ready to record next 10 results.

 

Changing Units
Leica Disto E7400X is provided with the stock of units that you can change as per your requirement. You can change from meter to feet to inches as per your convenience.

  • By pressing the  key each time for 2 seconds you can navigate through different units of measurements.
  • They change in this order.
  1.  meter upto three decimal places
  2. meter upto four decimal places
  3. meter upto two decimal places
  4. feet upto two decimal places
  5. feet and inches
  6. inches upto two decimal places
  7. only inches

 

Changing Tilt Units
You can also change the Tilt unit setting as well to measure your triangle angles in degrees ° or percentage %.

Press  & simultanaeously for 2 seconds and then switch between and ° & % units.

 

Adjusting/Standardising/Calibration of tilt sensor (Tilt Calibration)
Follow these quick 9 steps to adjust or calibrate your device in case of an unlikely discrepancy.

  1. Press  &  keys simultaneously for 2 seconds. The device display would show as Mers 1 Hor.
  2. Place the device on absolute flat surface and press 
  3. Next the device display would show Mers 2 turn 180°.
  4. Place the device on a horizontal surface with display up and rotate it one round 180° and press .
  5. Next the device display would show Mers 3 Ver.
  6. Place the device upside down on a flat surface and press .
  7. The device display will show Mers 4 turn 180°.
  8. Turn the device horizontally by 180° and place it again on an absolutely flat surface and press .
  9. The device calibration is complete and screen displays Ok Cal.

 

Device Applications

Straight line single distance measurement
Basic usage is quite simple

  • Beam and aim the laser on the selected target with the  key.
  • Pressing the  again records the measurement on device display.

* For measurements, where there is nothing obvious at the other end for the laser to reflect back, it is recommended that you use Leica branded Target plate. 

 

Permanent / Minimum-Maximum measurement
This function enables determining the minimum or maximum distance from a specific measuring point, e.g. the determination of room diagonals (maximum value) or horizontal distance (minimum value).

  • To activate permanent measuring, aim the laser at your desired location and press the  key for 2 seconds. This will activate the continuous laser and the display would show the min and max values on the screen.
  • Focus the laser on to the wall corner (for maximum measurement) or to the horizontal side (for minimum measurement) at 0° with a swaying movement as shown in the picture.
  • To stop permanent/minimum-maximum measuring press  key once.

 

Add/ Subtract function 

  • Add / Subtract are two basic functions in X310. The keys are displayed on the device for this application.
  • With the  key, the next measurement you take is added to the previous measurement.
  • And with the  key, the next measurement is subtracted from the previous one.

 

Area Measurement
Area measurement is a basic function provided in all Leica Disto devices. This helps you calculate the area of wall or surface just by measuring its sides from the same reference point.

  • For measuring the area of a surface, press the Fucnction key  once and you get the area application which appears as  on the display screen.
  • Beam the laser pressing  across to the end of the surface to take the 1st reading.
  • Then focusing from the same reference point take the 2nd reading by measuring the adjacent wall length. Once this process is completed the device automatically calculates the area for you.

* Adding and subtracting areas
You can measure two separate areas and add or subtract them from each other with the help of    or  keys.

*Total linear distance (circumference) of the area calculated
Once you have calculated the area of a wall/floor you can long press the  key for 2 seconds to view the circumference of that wall/floor . The device calculates this automatically.

 

Volume Measurement

  • Same way as in the area measurement, press the Fucnction key  twice and you reach the volume application which is displayed on the screen as .
  • Measure the three adjacent lengths (l x b x h) using. The only thing that needs to be kept in mind is that the all measurement needs to be taken from the same reference point.
  • Once this process is completed the device automatically calculates the volume on the display.

 *Total linear distance (circumference) of the volume calculated
Once you have calculated the Volume of a room, you can long press the  key for 2 seconds to view the circumference of that room . Along with this total of all the sides, the device also calculates wall areas and the ceiling/floor area .

 

Triangular Area Measurement

  • For measuring the area of a triangular surface, press the Function key  thrice and you reach the triangular area measurement application .
  • This is quite similar to previous area and volume measurement functions. Measure all three sides of a triangular area aiming lasers at 1st, 2nd and 3rd target points pressing  key.
  • Once this process is completed the device automatically calculates the area for you.

*Total linear distance (circumference) of the area calculated
 Once you have calculated the triangular area of a wall/floor you can long press the  key for 2 seconds to view the circumference of that triangular wall/floor . And along with the total of all 3 sides, the angle included by the first 2 measurements.

 

3 point indirect height measurement 
With Disto E7400X, you can measure the height of a building/object with the Pythagorean method. This function helps when you do not have direct access to the building for straight line measurements.

This function is extremely useful in measuring the height of an object or a building when you are measuring from a height or from above the ground.

With this application you can determine the vertical height of a building by recording 3 points (highest point of the building, the distance from the object/building & the lowest point of the building).

  • To do so, press the Fucnction key  five times and reach the application  on the display.
  • Then from the same reference point measure a., b. & c
    A. Shoot the laser with the  key to the top or the highest point of the object and press the  key again to measure that point.
    B. Same way and from the same reference point measure the horizontal distance from the building at 0°. (perpendicular from where you are standing)
    C. Lastly aim the laser to the lowest point of the building to measure that distance.
  • With all 3 calculations the device automatically calculates the height or the length of the building.

 

Partial Height measurement
Disto X310 provides you with the application of measuring partial length of an object/building at certain height from the ground.

  • To do so, press the Fucnction key  5 times and reach the application  on the display.
  • Then from the same reference point measure a. & b.
    A. Shoot the laser with the  key to the top or the highest point of the object and press the  key again to record that measurement.
    B. Aim the laser at the 2nd point or the starting point of the desired length to be measured as shown in the picture (left)
    C. Same way measure the horizontal distance from the building at 0°.
  • The device automatically calculates the height or the length of the building.

 

Smart Horizontal Mode™
A wonderful application to measure the horizontal distance even with an obstruction in the way.

  • Press the  key given in the center of the X310 device to activate the application.
  • And shoot the laser at an angle of certain tilt and record the measurement pressing .
  • The device automatically calculates the horizontal distance from the target.

*Along with the horizontal distance this application also records angle of the tilt, length of the tilt and the vertical height from the device. 

 

Height Tracking
This function allows you to continuously track the height from a certain fixed point based on changing angles as you move the device head reference.

  • Press the  twice to reach the height tracking application which is displayed on the screen as .
  • Aim the laser at the lowest point of the target for which the height is to be tracked and record the measurement by pressing .
  • This starts height tracking automatically.
  • Now gradually and continously keep aiming the laser at upper points and angles recording the desired readings.
  • Press  again to stop height tracking.

*This application needs tripod. 

You can find the entire Leica DISTO™ E7400X user guide here.