Measurement settings¶
The Measurement Settings menu contains all settings which apply to a measurement itself and must be stored in a setup file. The different sections will be explained in the following chapters. To jump to the system options settings, click on the link Jump to system options, seen in Fig. 93.
Fig. 93 Measurement Settings section¶
Note
A single click on any menu button will show a small view of the menu that contains the most important functionalities and information. Keeping the left mouse button on the menu button pressed and moving the mouse to the opposite side of the screen will expand the menu to the full screen and show all options.
Fig. 94 Measurement Settings in OXYGEN viewer¶
Opening the small sidebar measurement settings menu of a recorded file in OXYGEN viewer enables the Save DMD as… button. Here it is possible to save only a time slice of the measured data. For more information see Export active recorder region or between cursors.
All settings can be reset by clicking on the button Reset to default, on the left seen in in Fig. 95.
The content of the individual submenus will be explained in the following sections in detail.
Fig. 95 Measurement Settings menu¶
Fig. 96 Measurement Settings menu in PLAY Mode¶
Functions in PLAY mode¶
Analysis Files¶
This section is only available in PLAY mode, i.e. only when a measurement file is opened with OXYGEN, as seen in Fig. 96.
It shows some information about the currently opened measurement file. By clicking on the button Add file… multiple files can be opened. For more information, refer to Opening multiple data files.
File History¶
This section is only available in PLAY mode, therefore only when a measurement file is opened with OXYGEN, as seen in Fig. 96.
In this section it is possible to apply changes made to a measurement file in the post-processing to other files. For more information, refer to Batch processing.
Settings¶
Multi-File¶
Especially during long measurement campaigns, it might be useful if data is not stored to one single file but to several individual files. Among others, this mechanism allows the user to analyze and post-process data from the beginning of the measurement while the measurement itself is still running. This mechanism is called multi-file recording.
If multi-file recording is enabled, OXYGEN supports three different ways to split files:
Split by duration
Split by number of recording events
Split by absolute time.
Fig. 97 Multi-File recording settings¶
Multi-file recording¶
File names¶
Multi-file recordings are stored in a separate folder per default, which has the same name as the first multi-file. For more details about the file name pattern see Storing and File name.
To deactive the creation of a subfolder for multi-files, deactivate the slider in the multi-file settings (see Fig. 97). A separate multi-file counter (00x) is used if the individual file names are identical. With the optional text File Start in the Time placeholder, the timestamp of the recording start of each multi-file recording can be used.
Examples
#{Date, Local}_#{Number, Session}
The session counter is 3. Therefore, the multi-file recordings will have the following names: 20210503_003_001, 20210503_003_002, 20210503_003_003 etc.
#{Time, File Start, “hh-mm-ss”}
The multi-file recordings will have the following names: 09-55-29, 09-55-39, 09-55-49 etc.
Split by duration¶
If split by duration is selected, OXYGEN stores data automatically to a new file if the defined time interval is exceeded: A new data file will be created after 10 s, 2 0s, 30 s etc, overall recording time. The minimum time interval is 10 seconds.
Special case
Split by Duration in combination with enabled event based waveform recording and disabled User Reduced Statistics recording (see Triggered Events). With this combination, it can happen that no data is stored to a multi-file part. The following cases might appear:
No data recording after arming the Trigger: If it takes a certain time after arming Trigger and the first occurring recording event, the time between arming the Trigger and the first occurring recording event will be rejected and the ‘0s’ position will be shifted to the Arm Trigger position to the first occurring recording event. Thus, the first data file begins not at the position the Trigger is armed but at the position the first recording event occurs. The following Fig. 98 will illustrate this case:
Fig. 98 Special case 1 for multi-file recording; split duration: 10s¶
No data recording between two recording events: If the time between two occurring recording events is longer than the specified Split time interval, an empty data file created. (see File 3 in Fig. 98)
No data between the last occurring recording event and disarming the Trigger: If it takes a certain time between the last occurring recording event and disarming the Trigger, the time within will be rejected and no new data file will be created. The following Fig. 99 will illustrate that case. This is also the reason why the Split Stop/Start Marker is only created retroactively if a new recording event occurs and not at the exact time the split duration is exceeded.
Fig. 99 Special case 2 for multi-file recording; split duration: 10s¶
Note
If User Reduced Statistics recording is enabled for the upper explained special case, this special case will not be applied, because (statistics) data will be recorded continuously.
Split by number of recording events¶
If split by number of recording events (see ③ in Fig. 97) is selected, OXYGEN creates a new data file if the defined number of recording events is reached. I.e. in the example of Fig. 97, a new data file will be created after the 2nd, 4th, 6th, … recording event is terminated.
Special Case
If Split by number of recording events is used in combination with a pre-recording time which lasts back to the recording event that occurred before, both recording events will be regarded as one entire recording event, because they are connected by the pre-recording time. The following will illustrate this case for a recording split after two events:
Fig. 100 Special Case 3 for multi-file recording; Split after 2 recording events¶
Note
The DejaView™ functionality (see DejaView™) is applicable during multi-file recording as well. The instant of time a new data file is created is visible in the event List (see Event List) as Split Start and Split Stop marker (see Fig. 101).
Fig. 101 Split Start and Split Stop Marker¶
Split by absolute time¶
If split by absolute time (see ④ in Fig. 97) is selected, OXYGEN stores data automatically to a new file after every defined time interval. The OXYGEN Acquisition Time is used as the reference time. The first split can be selected using the popup calendar.
Fig. 102 Pop-up to select the first split¶
The files can be split after minutes, hours or days. The minimum interval for a split is one minute. After selecting the interval, a small preview of the next splits is shown in the settings in the multi-file section, also shown in Fig. 103. In that way the user can check if the settings are right.
Fig. 103 Split options and split preview for split by absolute time¶
Special case
Split by absolute time in combination with enabled event based waveform recording and disabled User Reduced Statistics recording (see Triggered Events).
With this combination, it can happen that no data is stored to a multi-file part. The following cases might appear:
No data recording after arming the Trigger
If it takes a certain time after arming Trigger and the first occurring recording event, the first file split will also occur with the first occurring recording event. Thus, the first data file begins not at the position the Trigger is armed but at the position the first recording event occurs. The first file can, therefore, be shorter than the defined interval. The next splits are done correctly according to the defined interval as shown in the split preview. This case is shown in Fig. 104.
No data recording between two recording events
If the time between two occurring recording events is longer than the specified Split interval, an empty data file will be created. (see File 4 in Fig. 104)
Fig. 104 Special case 1 for multi-file recording; Split by absolute time; interval: 1 min¶
No data between the last occurring recording event and disarming the Trigger
If no recording event happens after disarming the Trigger, the files will be split and created, nonetheless, according to the defined interval until the stop button is pressed. This case is shown in Fig. 105.
Fig. 105 Special case 2 for multi-file recording; Split by absolute time; interval: 1 min¶
Note
If User Reduced Statistics recording is enabled for the upper explained special case, this special case will not be applied, because (statistics) data will be recorded continuously.
Splits are only possible on rounded times, therefore only integer numbers can be used, e.g. 1, 2, …, 5 etc. min/h/d. It is not possible to split files every 1.5 hours.
If the first split lies in the past the next splits will be calculated correctly using the actual time.
Loading a multi-file¶
Multi-file parts that belong to the same measurement are stored in the folder of the selected data storing folder (see General settings) or in a separate folder of the selected folder, if the option create subfolder is active. The individual multi-files are enumerated starting with 1.
To load multi-files, click on the Open Data File button (see Fig. 106) and select the desired multi-file data folder. The folder is named to the same manner as data files are named. Thus, a prefix can be freely defined, and the actual date and time is appended automatically to the folder name (see General settings).
Fig. 106 Open data file button¶
After selecting the correct folder, the single multi-files are shown in a list. The Info tab shows if the selected file(s) is (are) a part(s) of a multi-file-recording and the number of compatible parts selected (see Fig. 107). It is possible to open all parts (see Fig. 108), several parts (see Fig. 109) or only one single part (see Fig. 110) of a multi-file recording. The file selection can be done with the check boxes which are placed left to the file name. If several or all parts are opened, they are displayed in the correct chronological order.
Fig. 107 Opening a multi-file¶
Fig. 108 Opening all parts of a multi-file recording¶
Fig. 109 Opening several parts of a multi-file recording¶
Fig. 110 Opening one part of a multi-file recording¶
If several parts are selected that are not part of a multi-file recording or don’t belong to the same multi-file recording, an information will be displayed in the Info tab and the Open button will be disabled (see Fig. 111).
Fig. 111 Selection of non-compatible multi-file parts¶
If several multi-file parts are opened simultaneously and data shall be exported, data is exported to one file. If data of multi-file parts shall be exported to separate files, the multi-file parts must be opened and exported successively.
Header data¶
Fig. 112 Header Data – settings¶
The user can define Header Data here by clicking on the + in the upper right corner or remove it again by clicking on the – behind the respective header information. Two types of header can be defined: Text header and Formula constant header.
Text header
When Header Data is added, a name must be assigned to the certain header information and a description can be added. It can also be selected if the header information shall be prompted at the recording start or at recording stop (see Fig. 113). If this option is selected, the description of each Header Information can be changed there by the certain operator. If Mandatory is selected, the operator must fill in information in the respective Header Description at the recording start or stop. Otherwise the UI cannot be closed.
Fig. 113 Header Data UI at the recording start or stop¶
Formula constant header
In addition, the user can define numerical header which can be further used in a formula for mathematical operations. After defining the header name and value, the header can be found in the math formulas for further processing (see Fig. 114). For details about formulas, refer to Formula channel. The prompt option is not available for numerical headers.
Fig. 114 Processing numerical headers in formulas¶
When a data or setup file is loaded, the user can also look at the Header Data here to facilitate the search for the correct data file (see Fig. 114).
Selection header
Furthermore, the user can define a selection header which can be used such as a text header, but with multiple manually defined values. As with a text header, the selection can be prompted at the recording start or at recording stop. If this is chosen, a pop-up window will appear on recording start or stop and one value of the selection can be chosen from a drop-down menu.
Fig. 115 Options for a selection header¶
In the options for a selection header a set of values can be defined (see Fig. 115). These can be text or numerical values.
Fig. 116 Header Data information when loading a data file¶
It is possible to add the Headers in a Text Box (refer to Text instrument) on the measurement screen. Three different procedures exist for adding Headers in a Text Box:
Select the desired Header information at the Header Name in the small view menu of the Measurement settings and add it by Drag and Drop to the Measurement Screen (see Fig. 118).
Fig. 117 Adding Header Data via drag and drop from the Measurement settings to the measurement screen¶
Adding Header Data via drag and drop from the Measurement settings to the measurement screenHeader information can also be added to an existing Text Box by dragging and dropping it into it.
Create a Text Box and go to its Instrument Properties. Created Header Data is there visible, too and can be added to the Text Box via a double click on the individual Header Data or via drag and drop
Fig. 118 Adding Header Data via drag and drop from the Text Box Instrument Properties to the measurement screen¶
Create a Text Box and type in the Header Data Name according to the following syntax: ${Header Data Name} and the Header Data Description will show up in the Text Box (see Fig. 119).
Fig. 119 Adding the Header Description in a Text Box¶
Nodes¶
Fig. 120 Nodes menu¶
Refer to OXYGEN-NET Menu – Nodes for more information.
Sync Setup¶
Fig. 121 Sync settings¶
Refer to OXYGEN-NET Menu – Sync for more information.
The following section provides information about the various synchronization options using OXYGEN with TRION hardware or the chassis controller. With DEWE2/3 instruments there is nearly no limit when synchronizing systems with each other. The synchronization of the devices is either done via an Internal 10 MHz clock, TRION-SYNC-BUS (SYNC I/O, SYNC OUT), IRIG, PPS, PTP/IEE1588 or GPS. The synchronization options depend on model and configuration of the DEWE2/3 instruments.
The synchronization input represents the input configuration of a device on how this instrument “gets” the input signal from any source or “generates” an input signal.
The synchronization output represents the output configuration of a device, which defines what kind of signal this instruments routes to the corresponding output to synchronize with the next connected device.
Internal Timing Source¶
Each DEWE2/3 chassis has an internal 10 MHz clock which is used as the clock source in this particular DEWE2/3 system. This internal clock is used per default for synchronization. Therefore, the Auto Setup box is checked per default and Internal selected as Synchronization Input Source (see Fig. 122).
Fig. 122 Sync setup - internal sync clock selected¶
The Sync indicator in the upper right corner of the menu will be grey if the Internal clock is used for synchronization.
TRION-SYNC-BUS¶
In addition, each DEWE2/3 system can output the synchronization signal of the 10 MHz of clock and forward it to another DEWE2/3 system. That is what the SYNC I/O connectors on the system are for (see Fig. 123).
Fig. 123 SYNC I/O connectors of a DEWE2/3 system¶
The forwarding of the synchronization signal can only be used in combination with the OXYGEN-NET option.
One socket being a synchronization OUT, whilst the other one could either be used as synchronization IN or OUT. The synchronization signal forwarding is activated per default (TRION (SYNC OUT) is activated in the Synchronization Output menu; see Fig. 122) and cannot be deactivated.
To clock another DEWE2/3 system with this forwarded synchronization signal, the following Sync Settings must be applied to the DEWE2/3 system that shall receive the synchronization signal: Uncheck the Auto Setup box and set the Synchronization Input source to TRION (SYNC I/O) (see Fig. 124).
Fig. 124 Sync setup – TRION-SYNC-BUS selected¶
The Sync indicator in the upper right corner of the menu will be
Red, if no valid synchronization signal is connected to the SYNC I/O connector
Orange, if a valid synchronization signal is connected to the SYNC I/O connector but the system is not locked yet (this might take some seconds and will be locked automatically)
Green, if a valid synchronization signal is connected to the SYNC I/O connector and the system is locked.
The Sync indicator is available in the Action bar as well if the Sync Setup is closed (see ② in Fig. 14).
The LED indication of the SYNC OUT and SYNC I/O connector have the following meaning:
SYNC OUT |
SYNC I/O |
|
|---|---|---|
RED (stable) |
Clock detected |
Clock detected / Receiving clock |
GREEN (stable) |
Acquisition running |
Acquisition running |
Depending on the usage of the SYNC I/O (input or output) the LED indicates if the system clock is available or received correctly from another system. The green LED indicates that the acquisition is running. If the acquisition stops, the LED will be off.
Depending on the TRION measurement board or the cassis controller which is mounted to the first (Star) slot of the system, different synchronization signals can be applied to the system.
Applying an external synchronization signal to the DEWE2/3 system¶
Depending on the chassis controller or TRION board which is mounted to the first (Star) slot of the system, different external synchronization signals can be applied to the system.
The following Table 7 provides an overview about the supported external synchronization sources for chassis controller or TRION modules:
INPUT SYNCHRONIZATION SIGNAL |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
PTP / IEEE 1588 |
GNSS |
PPS |
IRIG |
||||||||
GPS |
Galileo |
BeiDou |
GLONASS |
Rising edge |
Falling edge |
A DC |
B DC |
A AC |
B AC |
||
Chassis controller |
✓ |
✓ |
x |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
x |
x |
TRION-BASE |
x |
x |
x |
x |
x |
✓ |
x |
x |
✓ |
x |
x |
TRION-TIMING |
✓ 1 |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ 1 |
✓ |
✓ |
✓ |
✓ |
TRION-VGPS |
✓ 2 |
✓ |
x |
x |
✓ |
✓ |
✓ 2 |
✓ |
✓ |
✓ |
✓ |
OUTPUT SYNCHRONIZATION SIGNAL |
|||||||||||
Chassis controller |
✓ |
x |
x |
x |
x |
✓ |
x |
x |
✓ |
x |
x |
TRION-BASE |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
TRION-TIMING |
✓ 1 |
x |
x |
x |
x |
x |
x |
x |
✓ 1 |
x |
x |
TRION-VGPS |
✓ 2 |
x |
x |
x |
x |
x |
x |
x |
✓ 2 |
x |
x |
TRION-TIMING-V3 required; 2) TRION-VGPS-V3 required
Synchronization with a TRION-BASE board¶
If a TRION-BASE board is mounted to the first system slot (Star slot), the system can be synchronized with an external IRIG-B-DC or a PPS signal (synchronization to the Rising signal edge).
To use either IRIG-B-DC or the PPS signal as synchronization signal, connect the signal to the IRIG input of the TRION-BASE board (PPS signal must be input as well via the IRIG connector). Uncheck the Auto setup box in the Sync Setup and select either IRIG or PPS in the Synchronization Input menu (see Fig. 125).
Fig. 125 Selecting an external synchronization source using a TRION-BASE board¶
The Sync indicator in the upper right corner of the menu will be
Red, if no valid synchronization signal is connected to the SYNC I/O connector
Orange, if a valid synchronization signal is connected to the SYNC I/O connector but the system is not locked yet (this might take some seconds and will be locked automatically)
Green, if a valid synchronization signal is connected to the SYNC I/O connector and the system is locked.
The Sync indicator is available in the Action bar as well if the Sync Setup is closed (see ② in Fig. 14).
Note
If an external synchronization signal is applied to the system, the signal can be forwarded via the TRION-SYNC-BUS (see TRION-SYNC-BUS) as well to synchronize other DEWE2/3 chassis.
In addition, the TRION-BASE board has an AUX connector which can output a rectangular (LVTTL) signal to synchronize other devices, i.e. a GigE camera, to the TRION hardware clock. To do so, enable the Frequency (AUX) switch in the Synchronization Output setup (see Fig. 126). The Frequency can be set from 10 Hz to 10 MHz and the Start Edge can be the Rising or Falling signal edge.
Fig. 126 Providing a LVTTL signal via the AUX connector of the TRION-BASE board¶
Synchronization with a TRION-TIMING/VGPS board¶
If a TRION-TIMING or TRION-VGPS board is mounted to the first system slot (Star slot), the system can be synchronized with an external IRIG (A-DC, A-AC, B-DC, B-AC) or a PPS signal (synchronization to the Rising signal edge; synchronization to the Falling signal edge only if it is a TRION-TIMING/VGPS-V3 board).
IRIG
To use an IRIG signal as synchronization signal, connect the signal to the IRIG input of the TRION board. Uncheck the Auto setup box in the Sync Setup and select IRIG in the Synchronization Input menu (see Fig. 128). Go to the IrigCode drop-down menu and select the correct IRIG Code (see Fig. 127).
Fig. 127 Sync settings for an IRIG synchronization¶
The TRION-TIMING/VGPS-V3 board also supports the output of an IRIG B-DC signal. This can be found under the Synchronisation Output settings > Connector: “AUX” > IRIG.
PPS
To use a PPS signal as synchronization signal, connect the signal to the IRIG input of the TRION board (PPS signal must be input as well via the IRIG connector). Uncheck the Auto setup box in the Sync Setup and select PPS in the Synchronization Input menu (see Fig. 128). If the system shall be synchronized to the Rising signal edge, go to the InvertedInput drop-down menu and select False. If the system shall be synchronized to the Falling signal edge, go to the InvertedInput drop-down menu and select True.
Note
Only TRION-TIMING/VGPS-V3 boards support PPS synchronization to the falling signal edge.
Fig. 128 Sync settings for a PPS synchronization¶
All DEWETRON measuring devices with chassis controller also support the output of a PPS signal. This can be found under the Synchronisation Output settings - Connector: “AUX” - PPS. With this selection, a PPS signal is output at the digital I/O connector of the chassis controller at the PIN for the AUX output.
Fig. 129 AUX Output at Digital I/O connector of a chassis controller¶
GPS
To use a GPS signal as synchronization signal, connect the signal to the GPS input of the TRION board. Uncheck the Auto setup box in the Sync Setup and select GPS in the Synchronization Input menu (see Fig. 124).
Fig. 130 Sync settings for a GPS synchronization¶
Note
In this context, the term GPS refers to all GNSS sources. The source ultimately used depends on the available signal and the antenna.
PTP/IEEE 1588
Note
Only TRION-TIMING/VGPS-V3 boards support PTP synchronization.
To use a PTP signal as synchronization signal, connect the signal to the PTP input of the TRION board. Uncheck the Auto setup box in the Sync Setup and select PTP in the Synchronization Input menu (see Fig. 131).
Fig. 131 Sync settings for a PTP synchronization¶
The Sync indicator in the upper right corner of the menu will be:
Red, if no valid synchronization signal is connected to the SYNC I/O connector
Orange, if a valid synchronization signal is connected to the SYNC I/O connector but the system is not locked yet (this might take some seconds and will be locked automatically)
Green, if a valid synchronization signal is connected to the SYNC I/O connector and the system is locked.
The Sync indicator is available in the Action bar as well if the Sync Setup is closed (see ② in Fig. 14).
Note
If an external synchronization signal is applied to the system, the signal can be forwarded via the TRION-SYNC-BUS (see TRION-SYNC-BUS) as well to synchronize other DEWE2/3 chassis.
SyncOut PTP/IEEE 1588 V2 (Master)
Via the PTP connector on the housing of DEWETRON measurement devices (see Fig. 132) it is also possible to output a PTP synchronization signal. Thus, a DEWETRON measurement device can also be used as a PTP master to synchronize other devices via PTP.
Fig. 132 PTP connector on chassis¶
This function is a separate license option. After activating the corresponding license, the option to select PTP appears among the possible synchronization outputs in OXYGEN (see Fig. 133).
Fig. 133 Activation of PTP Master option¶
Note
The PTP Master option requires the software license (OXY-OPT-PTP-OUT) in combination with the hardware option DEWE3-OPT-IRIG/PTP and the firmware version R6.6.1. Further note, that this option does not work in EVALUATION mode.
In addition, the TRION-TIMING/VGPS boards have an AUX connector which can output a rectangular (LVTTL) signal to synchronize other devices, i.e. a GigE camera, to the TRION hardware clock. To do so, enable the Frequency (AUX) switch in the Synchronization Output setup (see Fig. 126). The Frequency can be set from 10 Hz to 10 MHz and the Start Edge can be the Rising or Falling signal edge. For the AUX output to fully work, the “Use Chassis Controller for Sync” option must be set to false.
Fig. 134 Providing a LVTTL signal via the AUX connector of the TRION-TIMING/VGPS board¶
General Remarks on PPS and IRIG synchronization¶
PPS is the abbreviation for Pulse Per Second. PPS signals provide one pulse per second whose Rising or Falling Edge is used for data synchronization.
PPS signals are usually provided by GPS receivers or IMUs, i.e. GeneSys ADMA’s or OxTS RT’s
PPS signals may look like the following:
The IRIG timecode is used to control a PLL, which is then used as the system time base.
The IRIG connector also has an indication LED flashing either green or red
Fig. 135 IRIG connector; detailed view¶
The IRIG LED has the following indication:
OFF |
ON |
Description |
|
|---|---|---|---|
GREEN (flashing) |
20 % |
80 % |
SYNC IN not available |
RED (flashing) |
80 % |
20 % |
SYNC detected, not locked |
Green (flashing) |
80 % |
20 % |
SYNC detected and locked |
Security¶
Configuration lock
Fig. 136 Security settings¶
In the Security menu, the user can log certain measurement setup and recording options against unauthorized or unwanted changes and protect the measurement setup. These settings are stored to the measurement setup.
If this option is enabled, the settings are automatically locked after loading the setup.
The following functionalities can be locked:
Channel List: Protects all settings in the Channel List (see Data channels menu). If this option is enabled, the Channel List settings can only be viewed. To edit the settings, the setup must be unlocked by entering the correct password. The password must be entered in the Security tab of the Measurement settings.
Recording Stop: A password has to be entered to stop or pause a recording based on a measurement setup that has this option enabled. A popup will open to enter the password after pressing the stop or pause button.
Measurement Screen design: If this option is enabled, a password has to be entered to access the Design Mode (see Adding an instrument to the measurement screen and channel assignment), to change the instrument’s channel assignment, axes scaling or their instrument properties. The password must be entered in the Security tab of the Measurement settings.
Save Setup: If this option is enabled, a password has to be entered to save changes on the measurement setup. A popup will open to enter the password after pressing the save setup button.
Recording Settings: If this option is enabled, a password has to be entered to edit the Data Storing and Multi-File settings (in Measurement settings see General settings) and the settings in the Triggered Events menu (see Triggered Events). The password must be entered in the Security tab of the Measurement settings.
Sensor database: If this option is activated, a password must be set as before. This means that the sensor database can no longer be edited unless the lock has been removed in the security menu.
To activate the lock of certain setup settings, proceed the following steps:
Fig. 137 Activation setup lock¶
Select the settings that shall be locked (see ① in Fig. 137).
Press Set/modify password (see ② in Fig. 137).
Enter the password and confirm it (see ③ in Fig. 137).
The selected settings will be locked afterwards (see ④ in Fig. 137).
To unlock the settings again, press the Unlock button and enter the password (see ⑤ in Fig. 137).
To remove the lock from the setup again, press Remove lock in the unlocked state (see ⑥ in Fig. 137).