TC66 Manuals Working Summary

This note summarizes the two imported TC66 manuals as a working reference for the project.

Source Set

TC66.pdf

• imported file: Documentation/Research Resources/Manuals/TC66.pdf
• apparent scope: TC66 / TC66C
• language: zh-CN
• pages: 9
• title metadata: TC66/TC66C
• creator metadata: Microsoft Word 2010
• revision date inside manual: 2022-01-07
• SHA-1: c9272064731ab462b6c872d92536d7291b2bda1d

User Maual for Operation and PC software and APP of TC66(C) Type-c USB PD Trigger Meter 2019.6.5.pdf

• imported file: Documentation/Research Resources/Manuals/User Maual for Operation and PC software and APP of TC66(C) Type-c USB PD Trigger Meter 2019.6.5.pdf
• apparent scope: TC66(C) operation plus PC and mobile software
• language: en
• pages: 12
• creator metadata: WPS 文字
• version label inside manual: TC66/TC66C(2020.6.5)
• SHA-1: a497356baab166af7cf0806e3095a59ad18f0276

Reading Strategy

Working interpretation of the two documents:

• the English manual is the easier baseline for product behavior and software workflow
• the Chinese manual is newer and appears to supersede or extend some product details
• when the two overlap, treat the Chinese manual as the newer reference unless runtime evidence says otherwise

Confirmed Model Split

• TC66 supports USB communication only
• TC66C supports USB and Bluetooth communication
• Android and iPhone app support are described only for TC66C
• PC software communicates with TC66 and TC66C by micro-USB, not Bluetooth

This split is one of the most important conclusions from the manuals.

Confirmed Device Capabilities

• display: 0.96 inch color IPS
• screen resolution: 160 x 80
• voltage measurement range: 0.0050 V to 30.0000 V
• current measurement range: 0 to 5.00000 A
• supply voltage: 3.5 V to 24 V
• power range: 0 to 150 W
• voltage resolution: 0.0001 V
• current resolution: 0.00001 A
• capacity accumulation: 0-99999 mAh
• energy accumulation:
  • older English manual: 0-99999 mWh and 999.99 Wh
  • newer Chinese manual still speaks in mWh/Wh terms but does not restate the full line in the same layout
• load impedance range:
  • English manual: 1 Ω to 9999.9 Ω
  • Chinese manual confirms load impedance display but not all values in the same line block
• temperature range:
  • measurement / working range in manuals centers on 0 C to 45 C
• refresh rate: 2 Hz

Product-Specific Behavior

• this is a Type-C tester rather than the older USB-A style family
• the product has hardware switches for:
  • system power
  • PD
• there is also a micro-USB port for isolated power or PC connection
• the manuals stress an important operating rule:
  • turn PD or CC pull-down off during normal charging measurements
  • turn it on for trigger and fast-charge protocol detection

UI and On-Device Pages

The manuals describe eight default device pages:

• main measurement
• offline recording
• quick-charge recognition
• quick-charge protocol detection
• trigger / decoy
• system settings
• system information
• simple measurement

Main measurement page

• shows voltage, current, capacity, energy, temperature, data-group number, load impedance, power, and current direction
• long press K1 clears the active data group
• long press K2 switches the data group

Data-group behavior

• the manuals describe multiple data groups with 0 as a temporary group
• group 0 restores and flashes the previous totals after reboot, then clears once accumulation exceeds 1 mAh
• at least group 1 persists totals across power cycles
• the wording in the English manual appears truncated around group numbering, so group semantics should be verified on-device before we hard-code exact persistence rules for every group

Offline recording page

• records measurements into onboard storage
• configurable recording interval: 1 to 60 seconds
• total recording duration ranges roughly from 24 minutes to 24 hours, depending on interval
• recording pauses automatically after power loss
• stored data can be cleared from the device menu

Quick-charge recognition

• reports D+ and D- levels
• recognizes at least:
  • QC2.0
  • QC3.0
  • Apple 2.4A / 2.1A / 1A / 0.5A
  • Android DCP
  • Samsung
• manuals say recognition is only a reference indication

Protocol detection

• dangerous operation that can make the USB-C side output high voltage
• manuals say to disconnect the load before running detection
• supported auto-detection includes:
  • QC2.0
  • QC3.0
  • Huawei FCP
  • Huawei SCP
  • Samsung AFC
  • PD

Trigger / decoy

• supported trigger families include:
  • QC2.0
  • QC3.0
  • Huawei FCP
  • Huawei SCP
  • Samsung AFC
  • PD2.0
  • PPS
• PD mode allows switching supported voltages and adjusting step value for PPS
• after most trigger modes, unplugging and replugging is required to return to 5 V

Settings

• auto screen-off:
  • 0-9 minutes
  • 0 means always on
• brightness:
  • Chinese manual says 10 levels
• temperature unit:
  • C / F
• PC communication switch
• Bluetooth switch
• screen rotation
• PD software switch / CC line mode
• language choice
• restore factory settings

Important behavior from the newer Chinese manual:

• enabling CC pull-down can auto-light the screen on PD chargers
• CC pull-down may affect normal charging measurement
• if measuring PD charging behavior, turn CC pull-down off
• if doing protocol detection or trigger, CC pull-down must be on and no load should be connected

System and Recovery Notes

• system info page includes serial number, firmware version, boot count, and current runtime
• abnormal-state recovery:
  • hold K2 during power-on to restore factory settings
  • hold K1 during power-on to enter boot mode for firmware update

PC Software

• supported OS:
  • Chinese manual: Windows 7 to Windows 10
  • English manual: Windows 7 and above
• PC communication is via micro-USB
• manuals mention RuiDengUSBMeter desktop software
• first-time use requires driver installation
• firmware update is performed from PC software while booting the device into update mode

Important workflow details:

• avoid USB hubs with compatibility issues; prefer a native computer USB port
• offline data can be downloaded into the PC application
• viewing offline data pauses real-time curve recording
• the graph can export table and image data
• manual software version references:
  • English manual: V1.0.0.5
  • newer Chinese manual: V1.0.0.6

Android App

• Android support:
  • English manual: Android 5.0+
  • newer Chinese manual narrows expectation to Android 5.0-10.0
• Bluetooth requirement: BLE 4.0+
• app support is only for TC66C
• Android 6.0+ requires location permission for BLE scanning
• BLE devices must be discovered in the app, not through system Bluetooth settings

App and distribution notes:

• English manual points to Google Play search TC66C
• newer Chinese manual points to Google Play search RuiDeng
• manual also references direct download from RuiDeng download pages
• export of recorded data to spreadsheet form is supported
• version references:
  • English manual: Android app V1.1.1
  • newer Chinese manual: Android app V1.0.3

The version mismatch likely reflects different release snapshots rather than a contradiction in core behavior.

iPhone App

• iPhone app only supports TC66C
• iOS support:
  • English manual: iOS 8.0+
  • newer Chinese manual: iOS 8.0 to iOS 14
• App Store search terms differ by manual:
  • English manual: TC66C
  • Chinese manual: TC66C
• version references:
  • English manual: 1.2.0
  • newer Chinese manual: 1.2.3

Important Scope Conclusions for This Project

• TC66 and TC66C should not be treated as identical communication targets
• app support is explicitly TC66C-only
• Bluetooth behavior for TC66C is explicitly BLE, not classic serial Bluetooth
• desktop integration for the TC66 family is explicitly USB-based
• PD / CC pull-down state is likely relevant to what users see and may affect how measurements behave

Implementation-Relevant Concepts

Concepts likely worth reflecting in app state or decoding assumptions:

• active page
• active data group
• temporary vs persistent accumulation behavior
• offline recording state and interval
• quick-charge recognition result
• protocol-detection support matrix
• trigger protocol and selected voltage
• PD or CC pull-down switch state
• Bluetooth enabled / disabled state on TC66C
• firmware version and serial number

Open Questions

• exact data-group count and persistence behavior across all groups on current firmware
• whether Bluetooth payloads expose all device pages or only a subset
• whether the mobile apps expose offline-recording management or only live data and export
• whether English and Chinese manuals map to distinct firmware branches or only different documentation snapshots