Godox GX-SEKONIC-A Wireless Module User Manual

Wireless module/GX-SEKONIC-A
Model GX-SEKONIC-A
User Manual

Chapter 1

Overview

1.1 Scope of application
This specification describes the operation and handling of the following products.
Customer name: SEKONIC CORPORATION
Product name: Transmitted radio wave module model GX-SEKONIC-A
Product code: GX
Related Regulations: Radio Law, Specified Low Power Radio Equipment ARIB-T66
FCC 47CFR Part15.C, Canada RSS Gen/RSS 210 EU RE Directive 2014/53/EU, ETSI
EN 300 440, EN62479
Environmental protection: Lead-free solder compatible
SEKONIC SKGP

1.2 Product overview
‘Transmission radio wave module” is a board module product for the wireless transmission function that uses the 2.4 GHz, ISM band. This product is designed for remote control of professional lighting for photography by incorporating it into products such as Sekonic’s light meter/color meter.
The ‘Transmission Radio Module” (Model GX) is compatible with the Godox X series 2.4G receiver system as a compatible radio system.
The internal function of the “transmit radio wave module” (Model GX) consists of an 8-bit microcomputer made by 11, a transmission amplifier with +20dBm output, and the antenna is a pattern antenna on the circuit board.
The following figure shows the outline of the internal configuration of this product and the connection with the embedded host

Above: Connect to the parent device with the 12-pin connector on the left side, and operate with the power supply (DC3V) from the parent device.
The main connection signals are the trigger switch signal (SyncIn) and UART serial communication (3V).

Chapter 2

Appearance and structure

2.1 Appearance and dimensions

This product is a printed circuit board module and has a structure in which electronic components such as semiconductors are soldered on one side of the circuit board, and a shield case for protecting the circuit components is soldered on it.
The individual manufacturing number, the certification number for compliance with wireless regulations, etc. are displayed on the shield case.
Refer to the drawings for details of the external shape and structure.
External dimensions (outline) Width 24.70±0.3mm x length 28.70±0.3mm x thickness 8.44mm +0.9/-0.6mm (including connector height)

Chapter 3

Electrical Specifications

3.1 Host connection interface
This product is connected to the embedded master device with a 2.0 mm pitch/12-pin connector.
The signals to be connected are as follows.

0: Triggering ON (over 100 sec)
1: Triggering OFF
4| TX Complete| None
5| READY| Status for trigger
0; Unable to receive trigger (Sending trigger)
1: Able to receive trigger (Completed sending trigger)
6| CLEARTOSEND| Status for receiving a serial command
0: Unable to receive serial command (Processing command)
1: Able to receive serial command
7| TXD| UART (ASYNC serial) Output data
8| RXD| UART (ASYNC serial) Input data
9| RESET| Reset module
0: Reset ON (Over 1000 uses)
1: Reset OFF
10| GND| Ground
11| ANTENA| For jig test
12| GND| Ground

The connector on this product is 200-FH-1-12-43-S-28-24-GO-A (socket), and the square pin type header pin (product example: IK210SM-S12G-T15) is suitable as the parent device-side connector.

• Power supply (1 pin)
  Input power supply voltage DC3.0V～3.6V, current consumption 0.09A maximum

• Trigger signal (3-pin
  Active low (minimum 100uS width) transmission request signal.
  It sends a “TRIGGER” signal based on the preselected radio system specifications.

• Internal operation status signal (4,5)
  This is a 3V-CMOS logic signal that indicates the operating status of wireless transmission.
  TX_COMPLETE/READY becomes Low when the trigger signal is recognized and becomes High when the transmission operation is completed.

• UART interface (7,8 pin)
  3V CMOS level UART interface signal. It can be directly connected to the MPU of the parent device.
  Serial communication parameters Communication speed 38400bps, 8bit, No parity, Stop 1 bit
  Do not connect RS232 level signals as this will damage the internal circuitry.
  Use a level converter circuit when connecting a personal computer, etc.

• Reset signal (9 pins)
  This is an active low hardware reset signal (minimum 1000uS width) that resets the internal operation of the transmitting radio wave module from the parent device.

• ANTENA signal (11 pins)
  Active low Testing enables signal.

Chapter 4

Wireless Specifications

4.1 Physical specifications

4.2 Protocol specifications
This product has a mode compatible with two communication procedures of the system as the operation of wireless transmission. The wireless transmission operation in these two modes is based on the CC2510Fx protocol of TI, but the detailed definitions have their respective characteristics and are not compatible.
For example, the following parts are different
Channel number and physical frequency assignment
Concept of physical/logical channel and group control
Transmission data rate and data packet structure
The definition outline of each radio interface is as follows.

GHz
Transmission data rate| 250| Kbps
Group control| 16 groups + ALL
(Group settings are independent of each other, combination specification is not possible|

The default settings of the transmitting radio wave module at the first startup are as follows.
Godox mode、CH 1
Please refer to the firmware specifications for detailed operation and control.
Firmware Design Specification

Chapter 5

Internal Control

The operation of the transmission wave module model GX changes as follows.
“Start-up”
After the power is turned on and the hardware is reset, the module initializes the internal circuits, outputs the module ID as a startup message to the UART interface, and then transitions to the idle state.
“Idle”
When the module is idle, it waits for a command from the UART interface, and if no command (or trigger signal) is received, there is no RF action.

“Trigger action”
The module can identify that the trigger signal (SYNC-IN) is low in all states. But it should follow a Prepare the main flash Cart command, then the SYNC-IN signal comes.
After identifying the trigger signal, the trigger transmission operation is performed. (Minimum time of the trigger signal is 100uS or more) To implement a one-shot trigger operation, do not set the trigger
signal to the Low state for 50mS or more.
“Command operation”
The module can receive UART commands in any state, When the command received from the UART interface is valid, the processing specified by the command is executed. Command processing is a send operation or a message response to the UART interface. After the command execution is completed, this product transits to the idle state.
“Transmission operation”
As a transmission operation, the module controls the wireless circuit and transmits the wireless message specified by the trigger signal or transmission request command in the preset wireless mode.
After execution of the transmission operation is completed, this product transits to the idle state.

Chapter 6

Embedded Specifications

The transmission radio wave module model GX is designed to be used by incorporating it into the Peconic L-858-D exposure meter. It can be incorporated into other equipment, but it must meet the following conditions.

6.1 Mechanical conditions
As shown in the figure below, the mechanical conditions for installing the module are as follows:
(CON) must be mechanically adapted. In addition, the space in which the board is installed does not allow the wireless performance of the antenna installed in the module to be demonstrated simply by providing the minimum board space.

Concept of required space (clearance)
Do not use metal or resin with an electrostatic shielding property for the casing (casing) of the parent device to be incorporated. If the module part is covered with metal parts, radio waves cannot be emitted to the outside.
In order to maximize the wireless performance (communication distance performance) of the antenna, make sure that there is no object around the antenna part of the module.
Furthermore, even if a resin housing is used, the characteristics will deteriorate if the antenna part of the module and the case are close to each other. To avoid this, make sure there is a gap of at least 3 mm between the back side of the module (the side without the component/shield case) and the resin case of the embedded parent device.

6.2 Electrical conditions
(1) Connection of all functions in order to use all the functions of the module, connect the following signals.

Triggering OFF
4| TX_Complete| None
5| READY| Status for trigger 0; Unable to receive trigger (Sending trigger) 1: Able to receive trigger (Completed sending trigger)
6| CLEARTOSEND| Status for receiving serial command 0: Unable to receive serial command (Processing command) 1: Able to receive serial command
7| TXD| UART（ASYNC serial） Output data
8| RXD| UART (ASYNC serial) Input data
9| RESET| Reset module 0: Reset ON （Over 1000 usec） 1: Reset OFF
10| GND| Ground
11| ANTENA| Active Low for Testing usage
12| GND| Ground

Chapter 7

Radio Compliance

The transmission radio wave module model GX uses radio waves in the 2.4 GHz band and can be used in most countries and regions of the world without obtaining permission to use it wirelessly. It is necessary to comply with the relevant regulations.
The transmission wave module model GX complies with the following laws and regulations.

7.1 Europe
The radio wave module model EP has been tested and manufactured based on the technical standards for embedded wireless modules specified by the European Commission’s Radio and Communication
Terminals Directive (RE Directive ), and bears the CE mark.
This product has been tested to the following basic radio and communication device directive (RE
Directive) 2014/53/EU radio wave equipment and health/safety requirements.
Wireless equipment article 3(2) EN300 440 v2.2.1
Human body electromagnetic field exposure article 3(1) an EN62479
The manufacturer of the product incorporating this product shall retain the technical data of this product, ensure that the wireless standard values and antenna performance do not deviate from the module specifications in the final product state, and meet the requirements for installation. It is necessary to check. Please contact your sales representative to obtain the test report.
Regarding EU directives for electronic devices other than wireless devices, it is necessary to confirm that they are satisfied as final products. (Electromagnetic environment compatibility, low voltage directive, environmental directive, etc.)
Equipment incorporating this product must display the “CE mark” on the visible part of the product.
At that time, the following points are required.

• The CE mark can be reduced/enlarged, but the proportion must be in accordance with the regulations.
• The CE mark requires a minimum height of 5 mm.
• The CE mark is easy to see and should not disappear or come off.

For more information on CE marking requirements, please refer to Article 19 of the Radio &
Telecommunications Terminal Directive (RE Directive, 2014/53/EU).
Properly CE-marked products can be sold and used within the EU and do not require local certification testing in EU countries.

7.2 the United States and Canada
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
The device has been evaluated to meet general RF exposure requirements. The device can be used in portable exposure conditions without restriction.

If the FCC identification number is not visible when the module is installed inside another device,
then the outside of the device into which the module is installed must also display a label
referring to the enclosed module. This exterior label can use wording such as the following:
“Contains Transmitter Module FCC ID: 2ABYN-GX Or Contains FCC ID: 2ABYN-GX”

When the module is installed inside another device, the user manual of the host must contain below are warning statements;

1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
   (1) This device may not cause harmful interference.
   (2) This device must accept any interference received, including interference that may cause undesired operation.

2. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

The devices must be installed and used in strict accordance with the manufacturer’s instructions as described in the user documentation that comes with the product.
Any company of the host device which installs this modular with Single modular approval should perform the test of radiated emission and spurious emission according to FCC part 15C: 15.247 and 15.209 requirements, Only if the test result complies with FCC part 15C: 15.247 and 15.209 requirements， then the host can be sold legally.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. Suppose this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on. In that case, the user is encouraged to try to correct the interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
—Consult the dealer or an experienced radio/TV technician for help.

This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions:
(1) This device may not cause interference, and
(2) This device must accept any interference, including interference that may cause undesired operation of the device.
The device has been evaluated to meet general RF exposure requirements. The device can be used in portable exposure conditions without restriction.

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