Logging to PC¶
Log4 measurements can be viewed through the Log4 Analyser Desktop application.
Connecting Log4.USB with Log4 Analyser¶
- Connect the Log4 device to PC, then open the Log4 Analyser Fig. 40.
- After waiting a few seconds, the Device Status will change to “Connected” (Fig. 41).
Log4 Analyser functionalities¶
Table below gives the breakdown summary of the Analyser functionalities (Fig. 41).
|1||Start/Stop||Start or Stop monitoring the measurements|
|4||View Tab||Enable/Disable Cursors. There are two available cursors, they can be used to track information at particular time|
|5||Help Tab||Link to Tektyte online documentation website.|
|6||Terminate||Stop the measurements|
|7||Clear||Clear previously stored data|
|8||Device Status||Connect/Disconnect the device|
|9||COM port selection||Select the communication port|
|10||Primary Channel selection||Select the channel to monitor|
|11||Power Range slider||Adjust the main monitor viewing range. Slide right to zoom out, slide left to zoom in.|
|12||Show Negative Values on the Main Monitor||Show/hide negative values on the main monitor|
|13||Auto Range the Main Monitor Graph to fit to screen||Let the Analyser adjust the main monitor viewing range automatically|
|14||Power measurements||Graph showing power measurements statistics|
|15||Voltage Measurements||Graph showing voltage measurements statistics|
|16||Current Measurements||Graph showing current measurements statistics|
|17||Resistance Measurements||Graph showing resistance measurements statistics|
|18||Energy Measurements||Graph showing energy measurements statistics|
|19||Cursor Statistics||Showing time and power measured at cursors|
|20||Power Statistics||Showing the mean, minimum, maximum, median, standard deviation and variance values of the power measurements for a short period|
|21||Long Term Statistics||Showing the mean, minimum and maximum values of the power measurements for a long period|
|22||Distribution Histogram||Showing the statistics distribution of the measurements selected to monitor|
|23||Main Monitor||Showing the graph of the selected measurements(Power, Voltage, Current, Resistance or Energy)|
Cursor and Battery Life Estimator Tool¶
One of Log4 Analyser’s special feature is its ability to estimate battery life time, given current power consumptions. To get the estimated battery life, we need to first set up two cursors, these will become the reference information for the battery life estimator.
- Go to View -> Cursors -> Enable Cursor 0 or Cursor 1. This will activate both cursors on the main monitor (Fig. 42). Drag them left or right to select the duration.
- Then go to Tools -> Battery monitor. See Table 4 for a breakdown of the Battery Life Estimator Tool (Fig. 43).
|1||Time||This displays the time stamp of the activated cursors. Time Delta represents the difference between the start and end cursor.|
|2||Current||The total and average current of the selected time duration is displayed here.|
For the battery selection, user can choose between Primary or Secondary Battery.
Here are the available models:
The Custom Value text field allows the change of Battery Capacity in mAh.
|4||Derating||This is the % of battery capacity loss over its life time|
|5||Estimated Battery Life||Estimated Battery Life from current conditions|
(This function is only available on Windows OS)
- Make sure the Log4 device is connected to the PC via micro USB cable.
- Open Log4 Analyser Application.
- Go to Tools -> Device Details (Fig. 44).
- Click on Update Firmware.
- Follow the on-screen instructions (Fig. 45), then click ok. Following screens should come up subsequently (Fig. 46).
- It should take around 2-3min for the device to update firmware.
- Once the update is complete, a pop up screen should come up. Press the reset button as instructed.
- Click on OK to complete update.