1.0 Introduction
The C1 TYPE-C tester is a high-reliability, high-safety USB voltage and current detection meter and a mobile communication terminal fast charging trigger. It has a 1.3-inch TFT LCD display with 240x240 ultra-high pixels. It uses an external 16-bit ADC and PD protocol physical chip. It can be used to measure the power supply or power consumption of products such as USB interfaces, mobile phone chargers, U disks, etc. It can also measure mobile phone charging power and mobile power input and output conditions, and test charger fast charging protocols.
This instruction manual includes relevant safety information, warning tips, and solutions to common abnormal situations. Please read the relevant content carefully and strictly abide by all warnings and precautions.
2.0 Safety Information
- Do not connect the monitoring interface to a power supply exceeding 24V.
- Do not connect the PC connection port to a power source exceeding 16V.
- When using the fast charge trigger module, please do not connect equipment that cannot withstand high voltage to any monitoring interface.
- When working with high power, the temperature of the instrument rises; please be careful to prevent burns.
- Please do not charge the phone after the fast charge is triggered. The manufacturer is not responsible for damage to the phone.
3.0 Performance Description
3.0.1 Interface
- Input monitoring port: TYPE-C, 24-PIN male
- Output monitoring port: TYPE-C, 24-PIN female socket
- PC connection port: Micro-USB, 5-PIN female socket
3.0.2 Human-computer interaction
- 1.3 inch TFT-LCD screen
- 3 physical buttons
3.0.3 Voltage and current
- Highest six-digit display of voltage, current, and power, with a resolution of 0.00001 (V/A/W).
- Records minimum, maximum, and average values of voltage, current, and power during operation.
- 10 groups of switchable capacity, power, and time statistics.
- 1 set of voltage and current curve records, maximum support 9 hours.
- Supports low-speed waveform (voltage, current, D+, D-) drawing, 2sps --> 100sps sampling rate.
- Supports high-speed ripple (voltage, AC coupling) drawing, 5Ksps --> 4Msps sampling rate.
3.0.4 Fast charge trigger
- QC2.0, QC3.0 trigger
- Huawei FCP, SCP trigger
- Samsung AFC trigger
- PD2.0/3.0 trigger
- Except for the PD protocol, it supports automatic monitoring.
- Supports a maximum of 24 hours for a limited time trigger, and automatically closes the trigger when the time is reached.
3.0.5 Wire identification
- Internal resistance measurement of the wire rod by the differential pressure method.
- E-Marker cable chip reading.
3.0.6 Miscellaneous
- Start-up running time record.
- Onboard temperature measurement.
- Gravity sensor, automatically switches the display direction; the whole interface supports 4-direction switching.
- PD monitoring.
- Apple 2.4A acceleration.
4.0 Appearance and Structure
The FNAC-28 / FNB58 USB Tester features a compact design with multiple ports and buttons for easy operation.
Image: FNAC-28 Interface Description - This diagram labels the various ports and buttons on the device. Key components include: USB-A Input, PC interface, Function keys, Back button, Micro input, Type-C output, Type-C input, PD switch, USB-A output, and the main screen.
- Input monitoring port: TYPE-C, 24-PIN male
- Output monitoring port: TYPE-C, 24-PIN female socket
- PC connection port: Micro-USB, 5-PIN female socket
- OK key
- Left button
- Right button
5.0 Technical Specifications
| Index | Range | Resolution | Accuracy |
|---|---|---|---|
| Monitor voltage | 4~24V | 0.00001V | ±(0.2‰+2) |
| Monitor current | 0~6.5A | 0.00001A | ±(0.5‰+2) |
| Monitor power | 0~130W | 0.00001W | ±(0.5‰+2) |
| Load equivalent internal resistance | 0~9999.9 Ω | 0.0001 Ω | ±(0.5‰+2) |
| D+/D- voltage | 0~3.3V | 0.001V | ±(1.0‰+2) |
| Equipment temperature (°C) | 1°C | ±(1.2‰+3) | |
| Equipment temperature (°F) | 1°F | ±(1.2‰+4) | |
| Capacity | 0~9999.99Ah | 0.00001Ah | |
| Energy used | 0~9999.99Wh | 0.00001Wh | |
| Cable internal resistance | 0~9999.9 Ω | 0.0001 Ω | |
| Equipment running time | 99 days 23 hours 59 minutes 59 seconds | 1 second | |
| Record time | 999 hours 59 minutes 59 seconds | 1 second |
Table: FNAC-28 Technical Parameters - This table details the measurement ranges, resolutions, and accuracies for various electrical parameters and operational metrics of the FNAC-28 device.
Image: FNAC-28 Product Parameter Diagram - This image provides a visual representation of the FNAC-28's dimensions and key specifications, including screen size, monitored voltage/current/power, device temperature, operating time, and weight.
Image: FNB48P Product Parameters Diagram - This image shows the dimensions and specifications for the FNB48P model, including versions with and without Bluetooth, detailing monitor voltage, current, power, internal resistance, D+/D- voltage, temperature, capacity, energy used, cable resistance, operation hours, and record time.
6.0 Basic Operation
Except for special instructions, the left and right buttons switch pages/menus. The OK button is used to confirm, and a long press of the OK button is used to cancel/return.
6.0.1 Concise Page
This page displays only 4 key parameters: voltage, current, power, and load equivalent internal resistance. The arrow indicates the direction of current. This page can change the display direction.
Image: Human-Computer Interaction Simple Operation Logic - This image highlights the simple display interface, independent function menu, and humanized operation of the device, making it easy to use.
Instructions:
- Long press the left button: enter the setting menu.
- Click the OK button: switch to 6-bit resolution.
- Long press the OK button: when the setting menu -> general -> gravity direction recognition is off, switch the screen direction.
6.0.2 Record Page
The top row of data from left to right shows the boot record time and the onboard temperature. The uppercase data on the left displays voltage, current, and power from top to bottom. The curve and progress bar on the right indicate the remaining storage capacity of the voltage and current curves. The groups in the lower left corner show the currently selected statistical group number, current group statistical time, capacity, and energy. From top to bottom on the right are the minimum, maximum, and average values for voltage, current, and power during the observation period. A progress bar at the bottom indicates the remaining capacity of the offline curve, with color indicating recording status (color for recording, gray for not recording).
Instructions:
- Long press the left button: switch to the capacity/power consumption list.
- Click the OK button: start/stop the voltage and current curve recording. Cannot be started if recording time is 0.
- Long press the OK button: prompt to restart the calculation of minimum, maximum, and average values of voltage, current, and power.
- Long press the right button: enter the offline curve observation page.
6.0.3 Fast Charge Recognition Page
The top row of data from left to right shows the boot record time and the onboard temperature. The uppercase data on the left displays voltage, current, and power from top to bottom. On the right, from top to bottom, are: trigger time limit, percentage of remaining trigger time, trigger status, and trigger type. The trigger timing will stop when the time limit is reached. Note that the charger may restart after some protocols stop triggering. The bottom table shows D+/D- voltages and identified possible ongoing agreements.
Instructions:
- Long press the left button: prompt to enter the fast charge trigger module. If a protocol is already triggered, it will prompt to release.
- Click the OK button: start/stop the trigger timing.
- Long press the middle button: prompt to clear and trigger timing.
- Long press the right button: enter the charging tool menu.
6.0.4 Curve Display Page
The device supports various curve display modes:
- Mode 1: Low-speed voltage and current curve (2sps -> 100sps)
- Mode 2: Low-speed D+D- curve (2sps -> 100sps)
- Mode 3: High-speed voltage ripple (AC coupling) (5Ksps -> 4Msps) - Displays sine, square, and triangle waves.
Image: Four Functional Curve Display - This image illustrates the four main curve display modes: Real-time Voltage and Current Curve, Offline Curve Recording, D+D- Voltage Curve, and High-speed Power Supply Ripple Measurement.
Image: 3 Large Curve Interface + Record Offline Curve - This image shows the three main curve interfaces and the ability to record offline curves, emphasizing high-speed voltage ripple detection to assess charger quality.
Instructions for Curve Display:
- Long press the left button: time base subtraction.
- Click the OK button: start/pause drawing the curve (except in mode 3, it will prompt whether to clear the curve).
- Long press OK key: switch mode.
- Long press the right button: time base plus.
7.0 Advanced Recording Functions
7.0.1 Energy Statistics List
In the record page, long press the left button to enter. Each row in the list represents a group of parameters: group number, capacity, and energy. The selected group is displayed in green. The lower left corner shows the statistical time of the selected group, and the lower right corner shows the group number of the currently statistical group.
Instructions:
- Click the OK button: prompt to select or clear the selection group.
7.0.2 Offline Curve Observation Page
Click OK to prompt to clear the record curve.
Image: 10 Groups of Energy Recording Battery Capacity Calculation - This image highlights the device's ability to support 10 sets of charge and discharge energy data records, with a built-in formula for quick battery capacity calculation.
8.0 Quick Charge Protocol Trigger and Detection Menu
On the fast charge recognition page (6.0.3), long press the left button and confirm to enter this menu.
Caveat: Once you have entered the quick charge trigger/detection interface, all operations must be performed carefully, and it is forbidden to connect to equipment that cannot withstand high voltage. During the use of this function, the author will not be responsible for the loss caused by misoperation.
8.0.1 Automatic Detection of Fast Charge Protocol
In this mode, the meter tries to trigger various protocols in turn and displays the test results on the screen. Red indicates not supported, and green indicates supported. During the test, it is forbidden to connect any equipment at the back end. It does not respond to any key operations. To exit during the test, unplug the meter directly. After the test is completed, click the OK button to start the test again; long press the OK button to return to the previous page.
Image: Mainstream Protocol Trigger Function Interface - This image displays the various fast charging protocols supported for triggering, including Qualcomm QC 2.0/3.0, Huawei FCP/SCP, Samsung AFC, PD2.0/3.0, VOOC/WARP, and SVOOC.
8.0.2 QC2.0 Trigger
In QC2.0 trigger mode, use the left and right keys to select the trigger voltage, and long press the OK key to return.
8.0.3 QC3.0 Trigger
In QC3.0 trigger mode, use the left and right keys to decrease/increase the trigger voltage, and long press the OK key to return. Press the left/right keys to quickly decrease/increase the voltage.
8.0.4 Huawei FCP Trigger
The operation mode is the same as QC2.0 trigger.
8.0.5 Huawei SCP Trigger
The operation mode is the same as QC3.0 trigger.
8.0.6 Samsung AFC Trigger
The operation mode is the same as QC2.0 trigger.
8.0.7 PD Protocol Trigger
The device shows a charger sending a message with a total of 6 gears. Gears 1-5 are fixed voltage gears, and gear 6 is an adjustable voltage gear (PPS). When the dot on the left is on 'Gear', you can switch the gear by pressing the left and right keys. When the gear is switched to the PPS gear, you can switch the step voltage by clicking the middle button. After selecting the step voltage, press the left and right keys (left: Decrease, right: Plus) to decrease/increase the voltage.
Image: Protocol Trigger Introduction - This image provides a detailed overview of various quick charge protocol triggers, including QC2.0, QC3.0, Huawei FCP/SCP, Samsung AFC, PD Trigger, QC2.0 to PD Protocol, SVOOC Trigger, and VOOC/WARP Constant Voltage Trigger.
9.0 Charging Tools
On the fast charge recognition page (6.0.3), long-press the right button to enter the charging tool menu. The functions are:
- PD listener
- Read E-Marker cable
- Wire resistance measurement
- Apple 2.4A acceleration
9.0.1 PD Listener
When using a PD monitor, use a power supply not greater than 16V (usually 5V) and a Micro-USB cable to connect to the PC connection terminal to provide external power. When the connection is normal and the PD protocol triggered by the PD consumer is captured, the page will display the communication process. You can select messages to view by using the left/right keys. The larger the message number, the newer the message. Long press the left button to clear the data buffer. Long press the right button to quickly browse messages.
Note:
- Turn on the setting menu->trigger->mask PD CRC to turn off the monitoring of CRC.
- For the meaning of various messages in the PD protocol, please refer to relevant information.
9.0.2 Read E-Marker Cable
An E-Marker cable refers to a cable with an E-Marker chip in the Type-C interface. If the interface does not contain an E-Marker chip, the packet from the PD charging head cannot exceed 3A current. Only E-Marker cables can trigger PD protocols exceeding 3A. When using the PD monitor, please use the PC communication port for power supply. After entering this function, insert the cable from the Type-C female socket to read the message. Click OK to switch between parsed and original data views.
Image: PD E-Marker Cable Measurement - This image demonstrates the device's capability to support reading E-Marker data from cables, including vendor ID, type, speed, length, max voltage, and current, and also features Apple 2.4A acceleration.
9.0.3 Wire Resistance Measurement Page
The C1 uses the differential pressure method to measure the internal resistance of the cable, which needs to be used with a constant current load.
Instructions:
- Click the OK button: use the current voltage and current value as the reference value.
Measurement Procedure:
- Step 1: Connect charger + C1 + constant current load (adjust current to about 0.5-1A), and record the reference value.
- Step 2: Connect charger + cable + C1 + constant current load (current should be similar to Step 1). The system automatically calculates the internal resistance of the cable.
Image: Cable Internal Resistance Detection - This image explains the differential pressure method used to measure cable internal resistance, detailing a two-step process with constant current load to easily test wire resistance.
9.0.4 Apple 2.4A Acceleration
The Apple device can only charge at 5V-2.4A when it detects that the charging head D+ and D- are 2.7V. This function sets D+ and D- to 2.7V.
10.0 Settings Menu
In the setting menu, left and right buttons can select menu options, click OK to enter/confirm the current options, long press OK to return/cancel/exit the current options/menu.
Image: Backstage Menu Setting Interface - This image shows the various setting interfaces: General, Record, Trigger, and System message, allowing users to configure display, recording, trigger, and view device information.
10.1 General Settings
Set up some general system configurations.
- 10.1.1 Display brightness: Set the screen brightness, adjustable range is 1-20 levels.
- 10.1.2 Standby brightness: Set the brightness of the standby screen, adjustable range is 0-20. If set to 0, the screen will turn off directly after entering standby.
- 10.1.3 Standby time: Set the standby time. After the last button operation, the device will enter standby mode when the set time is reached.
- 10.1.4 Data transmission: When closed, unable to connect to the computer through the PC port.
- 10.1.5 Temperature symbol: Optional on-board temperature display as °C/°F.
- 10.1.6 System language: Currently only Chinese/English is supported. Due to character size, English will be displayed in the Chinese system, which is normal.
- 10.1.7 Current change wake up: Set the wake-up current. When the current change exceeds this value, the meter changes from standby to normal working state. If set to 0, the function is turned off.
- 10.1.8 Bluetooth switch: When closed, Bluetooth data transmission is not possible.
- 10.1.9 Gravity direction recognition: When opened, the page direction is automatically switched. When closed, the page reverse cannot be switched automatically, but you can switch the page direction by long pressing the OK button on the concise page (6.0.1).
- 10.1.10 Startup page: Turn on/off the boot page.
- 10.1.11 Restore factory settings: Restore all settings except recorded data.
10.2 Record Settings
Set the configuration required for logging data.
- 10.2.1 Curve record time: Set the recording time of the voltage and current curve. The maximum is 9 hours. Set to 'no time' for no recording. Each time you change the configuration, the curve will be cleared to 0.
- 10.2.2 Statistical current threshold: When the current is greater than or equal to the threshold, capacity, energy, and time statistics are performed. Setting range is 0-5A.
- 10.2.3 Energy statistics time: When set to 'None', there is no time limit until statistics reach the maximum value. After the time is set, statistics will automatically stop when the set time is reached.
- 10.2.7 Clear all records: Clear all recorded data, including offline curves and energy statistics.
10.3 Trigger Settings
Trigger related configuration.
- 10.3.1 Trigger time: Set the trigger time.
- 10.3.2 Block PD CRC: After it is enabled, CRC packets can be shielded when PD is monitoring. It is disabled by default.
- 10.3.3 Power on Apple 2.4A: Settings menu -> Trigger -> Power on Apple 2.4A.
10.4 System Information
You can view information such as the running times of the instrument, SN serial number, software version, etc.
11.0 Firmware Upgrade Instructions
NOTE: The previous FNB38 and FNB48 use the FNIRSI USB Meter upgrade tool. FNIRSI-C1 uses FNIRSI UsbMeter Computer Software to upgrade the firmware.
- Open the FNIRSI UsbMeter Computer Software.
- When the meter is off, press the "OK" button first. Then connect the USB data cable to the "PC online port". It will display the connected device model and device firmware version.
- Click "System". In the file location, import the firmware version you want to upgrade.
- Click "Refresh icon", then "START" to begin the firmware upgrade. After the upgrade is complete, the device will automatically restart and enter the main interface.
12.0 Frequently Asked Questions (Troubleshooting)
- Q: Why is there no response when C1 is inserted into the PD charger?
- A: The CC pull-down of C1 is off by default, and the PD charging head does not supply power when the CC pull-down is not detected. After connecting C1, press AND HOLD the right button to use the CC pull-down to activate the charger.
- Q: When using a CC cable to connect to C1 from the TYPE-C female socket, and pressing the right button, why is there still no response?
- A: The CC line has only one-sided CC. The connector can be turned over and reconnected.
- Q: How to trigger the PD protocol?
- A: If you start by pressing the right button, after entering the PD trigger, no protocol information is displayed, you need to re-plug and enter.
- Q: After triggering SCP or PD, and then triggering other protocols, will it restart?
- A: This is due to the nature of the agreement, which is normal.
- Q: Entering the PD monitor results in a black screen?
- A: Entering the PD monitor will turn off the CC pull-down, so it is recommended to use an external power supply.
- Q: PD monitoring fails and there is no data?
- A: Switch to the page of "View detailed communication process", then long press the left button to clear the data buffer area, and then trigger the monitoring.
User Tips
- The FNAC-28 / FNB58 supports bidirectional current monitoring, allowing for comprehensive testing in both directions.
- For users interested in oscilloscope functionality, the FNAC-28 offers enhanced performance compared to previous models like the FNB48.
- When using the Bluetooth APP, please note that it currently only supports Android phones; iOS systems are not supported for the Bluetooth APP functionality.
Warranty and Support
Thank you for choosing FNIRSI products. Our products undergo strict quality inspection before being sent out. If you have any questions or need our help, please contact the manufacturer's official support channels for assistance.
