liquidinstruments V24-1004 Logic Analyzer
USER MANUAL
Moku:Go’s Logic Analyzer is equipped with 16 bidirectional digital I/O with sampling rates up to 125 MSa/s. It supports 3.3 V logic levels (5 V tolerant) and 1M × 16 input sample depth. Two independent decoder channels can be added to decode UART, I2C, I2S, CAN, Parallel bus, and SPI protocols. Extensive measurements are readily available through the interface. Data, screenshots, and logs can be readily captured to email or cloud-based services for rapid sharing and evaluation. Combined with the analog inputs, analog outputs, and the intuitive graphical user interface, Moku:Go is your go-to solution for undergraduate curriculum labs and senior design projects.
Ensure Moku:Go is fully updated. For the latest information:
User Interface
| ID | Description |
| 1 | Main menu |
| 2 | Add channel |
| 3 | Save data |
| 4 | Settings |
| 5 | Signal display area |
| 6 | Output pattern generator |
| 7 | Input start/pause |
| 8 | Cursors |
Physical Interface
Moku:Go is equipped with a 20-pin digital I/O interface. 16 of the 20 pins are the bidirectional digital I/O. There are two ground pins, one 5 V output, and one 3.3 V output. A detailed layout can be found in the following figure:
The main menu can be accessed by clicking the 
icon on the top-left corner.
This menu provides the following options:
| Options | Shortcuts | Description |
| Save/recall settings: | ||
| • Save instrument state | Ctrl+S | Save the current instrument settings |
| • Load instrument state | Ctrl+O | Load last saved instrument settings |
| • Show current sate | Show the current instrument settings | |
| Reset instrument | Ctrl+R | Reset the instrument to its default state |
| Power supply | Access power supply control window* | |
| File manager | Open file manager tool** | |
| File converter | Open file converter tool** | |
| Preferences | Access the preferences tool | |
| Help | ||
| • Liquid Instruments website | Access Liquid Instruments website | |
| • Shortcuts list | Ctrl+H | Show Moku:Go app shortcuts list |
| • Manual | F1 | Access instrument manual |
| • Report an issue | Report bug to Liquid Instruments |
* Power supply is available on the Moku:Go M2 model. Detailed information about power supply can be found in Moku:Go power supply manual.
**Detailed information about the file manager and file converter can be found at the end of this user manual.
Export data
The export data options can be accessed by pressing the 
icon, allowing you to:
1. Select the type of data to export.
2. Select the export format. Available options are .csv, .mat, .jpg, .png, .npy. .li, .hdf5, .txt
3. Select the Filename Prefix for your export.
4. Select the exporting location on your local computer.
5. Enter additional Comments to be saved in any text-based file header.
6. Export the data, or
7. Close the export data window, without exporting.
Signal display
| ID | Button | Description |
| 1a | Top time origin mark Marks the “zero second” point on the time scale. This will be the trigger point if the logic analyzer has triggered. | |
| 1b | Bottom time origin mark | Marks the “zero second” point on the time scale. This will be the trigger point if the logic analyzer has triggered. |
| 2 | Remove trace | Click here to remove the trace. It will appear when the mouse cursor is over the signal trace area for this pin on the signal display. |
| 3 | Output pin header | Signal header for Pin 4. The left pointing arrow indicates it is currently set to be an output channel from pattern generator 1. Clickthe arrow to switch direction. |
| 3a | Low override | Click to override this output to Low. |
| 3b | High override | Click to override this output to High. |
| 4a | Input pin header | Signal header for Pin 3. The right pointing arrow indicates it is currently set to be an input channel. Click the arrow to switch direction. |
| 4b | Active pin header | Click the signal trace area or pin header for any pin to make it the active signal. This allows user to access settings and pattern editorfor this pin. Click the header again to deselect the active pin. |
| 5 | Sort channels | Sort channels by channel number or channel type. |
The displayed signal can be moved around the screen by clicking anywhere on the signal display window and dragging to the new position.
Scrolling the mouse wheel zooms in and out along the time axis.
Add channel
Additional channels can be added to the screen by clicking the 
icon.
It gives you the following options:
| Options | Shortcuts | Description |
| Add pin | Select a specific pin to add | |
| Add next available pin | Ctrl/Cmd+Shift+N | Add the next pin that is not currently in use |
| Add math channel | Add math channel | |
| Add protocol decoder | Add protocol decoder channel | |
Settings
The settings options can be accessed by clicking the 
icon, allowing you to reveal or hide the controls drawer, giving you access to all instrument settings. The controls drawer contains settings and measurements.
Acquisition
The acquisition pane allows you to configure the active pins, math channels, decoders, and timebase.
| ID Button | Description |
| 1 Input selection | Select the input source for all pins to use (Digital I/O or Analog Input). |
| 2 Active pin settings | Set the mode of the selected pin to either Input or Output and change the name of the selected pin. |
| 3 Timebase | Roll mode: Toggle between roll and sweep mode. Timespan: Horizontal screen scale. Changes dynamically when zooms in and out a trace or can be entered manually. Offset: Horizontal trigger point offset. Changes dynamically when horizontally-dragging a trace or can be set manually. |
Active output pins settings
Mode Select: between input and output mode
Output override: Select to override the output with “Low” or “High”
Active math pins settings
Source A: Select the first source for the math operation
Operation: Select from AND, OR, XOR, NAND, NOR, XNOR operation
Source B: Select the second source for the math operation
Protocol Decoder
The protocol decoder channels can be added via the button. Detailed settings for each protocol can be configured under the acquisition pane when it is selected as the active channel.
Trigger
| Button | Description |
| Mode | Switches between auto, normal and single trigger modes |
| Nth event | Select up to 65,535 trigger events before actually triggering |
| Holdoff | Select a time to holdoff trigger post trigger event |
| Type | Select between basic or advanced trigger mode |
| Channel | Select the source for the trigger circuit |
| Edge | Select to trigger on rising, falling, or both edges |
Advanced Trigger Mode
In the advanced trigger mode, user can select to trigger from multiple channels, with OR or AND combinational logic.
Measurement
The measurement pane allows you to add/remove measurements. A measurement can be assigned to a specific input, output, math channel, or difference between any two channels.
1. Click to add additional measurement tile
2. Measurement source. Click to loop through the measurement sources.
3. Measurement type
4. Measurement value
5. Click to remove the measurement tile Click
Click a measurement tile to open the menu to adjust the measurement. The following options are available:
Type Select the measurement type
• Frequency
• Phase
• Period
• Duty cycle
• Pulse width
• Neg width
Channels: Select measurement source
Difference: Channels Measure the difference between the measurement source to another channel
Remove: Remove the measurement tile
Pattern Generator
The output pattern can be accessed by clicking the 
icon. Moku:Go is equipped with two independent pattern generators. Each pattern generator can store a pattern for all 16 pins. User can select to output a pattern for a specific pin from pattern generator 1 or 2.
1. Switch to configure pattern generator 1 or 2
2. Enable the output or restart the pattern playback if repeat forever is not enabled ( )
3. Base sampling frequency
4. Decimation factor from the base frequency
5. Baud rate
6. Adjust the length of the pattern
7. Enable or disable the repeating output
8. Click to edit or clear the pattern
9. Import or export the pattern from or to file or clipboard
Pattern Editor
1. Fill the pattern generator with a specific pattern:
- Zeros
- Ones
- Clock
- Pulse
- Random
2. Tick number
3. Click to manually flip the bit
4.Click to close the editor
5. Enable or disable auto commit
6. Commit the changes
7. Discard the changes
Cursor
The cursors can be accessed by clicking the 
icon, allowing you to add time cursors, or remove all cursors.
In Addition, you can right click on a cursor to set it as the reference or remove the cursor.
Additional Tools
Moku:Go app has two built-in file management tools: file manager and file converter.
File Manager
The file manager allows the user to download the saved data from Moku:Go to the local computer, with optional file format conversion.
To save logged data:
1. Select all files logged to the device’s memory, to download or convert.
2. Delete the selected file/s.
3. Browse and select file/s to download or convert.
4. Select an optional file conversion format.
5. Select an optional location to export your selected files to.
6. Export the data.
7. Close the export data window, without exporting.
Once a file is transferred to the local computer, a 
icon shows up next to the file.
File Converter
The File Converter converts the Moku binary (.li) format on the local computer to either .csv, .mat, .hdf5 or .npy format. The converted file is saved in the same folder as the original file.
To convert a file:
1. Select a file type to convert to.
2. Open a file (Ctrl/Cmd+O) or folder (Ctrl/Cmd+Shift+O) or drag and drop into the File Converter to convert the file.
Power Supply
Moku:Go’s Power Supply is available on the M2 model, which features a 4-channel power supply.
The power supply control window can be accessed in all instruments under the main menu.
The power supply operates in two modes: constant voltage (CV) or constant current (CC) mode.
For each channel, the user can set a current and voltage limit for the output. Once a load is connected, the power supply operates either at the set current or set voltage, whichever comes first. If the power supply is voltage limited, it operates in the CV mode. If the power supply is current limited, it operates in the CC mode.
| ID | Function | Description |
| 1 | Channel name | Identifies the power supply being controlled. |
| 2 | Channel range | Indicates the voltage/current range of the channel. |
| 3 | Set value | Click the blue numbers to set the voltage and current limit. |
| 4 | Mode indicator | Indicates if the Power Supply is in constant voltage (CV), green, or constant current (CC), red, mode. |
| 5 | On/Off Toggle | Click to turn the power supply on and off. |
| 6 | Range | Indicates the Voltage and current limits of each Power Supply. |
| 7 | Readback values | Voltage and current readback from the Power Supply. This is the actual voltage and current being supplied to the external load. |
Each Power Supply has two modes: constant voltage (CV) and constant current (CC). You can set both current and voltage limits for each channel. The Power Supply operates in CV mode if voltage is limited and in CC mode if current is limited.
Ensure Moku:Go is fully updated. For the latest information:
www.liquidinstruments.com
Specifications:
- Product: Logic Analyzer
- Model: Moku:Go
- Version: V24-1004
- Website: www.liquidinstruments.com
FAQ:
Q: How can I add a new channel for analysis?
A: To add a new channel, click on the ‘Add channel’ option in the user interface and follow the on-screen instructions.
Q: Can I customize the trigger settings?
A: Yes, you can customize the trigger settings under the ‘Trigger’ and ‘Advanced Trigger Mode’ options in the Settings menu.
Documents / Resources
 |
liquidinstruments V24-1004 Logic Analyzer [pdf] User Manual V24-1004, V24-1004 Logic Analyzer, V24-1004, Logic Analyzer, Analyzer |
