HD6 Hardware Interfaces

this section describes the characteristics and operation of all connectors on the hd226 and hd1026 ethernet an rj45 jack is provided for connection that supports 10/100/1000 base t operations a second rj45 jack that supports 10/100/ base t operations provides a network connection it is intended to create an internal network amongst a number of screens for the purpose of screen identification and control power connector the power connector for the hd226 and hd1026, which connects the power cord to the device, is rated for 12v\@3a when looking directly at the device's power socket, right side positive power ground signal is the pin nearest to the edge of the product 12v power signal is the pin nearest the push buttons hdmi output the hdmi out connector on the hd226 and hd1026 is used to send digital video and audio to hdmi enabled sink devices the hdmi ® output on these players is hdmi 2 0a cec control is supported over the hdmi interface independently the hd226 and hd1026 support hdr video as well as 3840x2160x60p 10 bit video decode and display 3840x2160x60p video rotation 3840x2160 graphics plane resolution support gpio hd226/hd1026 players have a 12 pin gpio switch and led connector, which allows the player to control external leds or other devices requiring 24ma of current or less the gpio port is a standard design manufactured by phoenix contact, wurth electronics, and others pluggable gpio terminal blocks can be inserted into the gpio connector to make bare wire contacts (see here for an example part) these terminal blocks can be purchased from the brightsign store if you wish to source your own terminal blocks, make sure to use 4 pin or 6 pin blocks (12 pin blocks are extremely difficult to remove from the gpio port) connect the led outputs to the led anode and connect the led cathode to the ground if you want to connect another device, then the output is capable of sourcing or sinking up to 3 3v at 24ma, but there is a series resistor of 100ω in each line the gpio also allows for connecting of external contact closures to the ground in order to connect a switch, connect one side of the switch to the switch input, and connect the other side to one of the ground pins on the gpio connector the connector can also supply 3 3v at up to 500ma to an external device the 3 3v output is polyfuse protected and can source up to 500ma if one brightsign player is driving the inputs on another brightsign player, then you can drive at most three inputs from one output the following calculations explain this limitation the gpio outputs have 100ω series resistors; the gpio inputs have 1k pullup resistors to 3 3v; and the input threshold is 2v high and 8v low the high voltage is not problematic, but the low voltage can be if there are too many inputs connected to one output 1 out driving 1 in v=3 3 100/(100+1,000)=0 3 1 out driving 2 in v=3 3 100/(100+500)=0 55 1 out driving 3 in v=3 3 100/(100+333 3)=0 76 1 out driving 4 in v=3 3 100/(100+250)= 94 (this is too high, so 1 output driving 3 inputs is the maximum) gpio pinout the following table illustrates the pinout of the gpio on the hd226 and hd1026 pin function pin 1 function 1 1 gnd 7 gnd 2 3 3v 8 3 3v 3 button 0 9 button 4 4 button 1 10 button 5 5 button 2 11 button 6 6 button 3 12 button 7 the following schematic illustrates the pinout of the gpio connector ir input / output the ir blaster generates or receives a space encoded nec or pronto hex signal rc5 encoding is also supported the two transported bit values of the signal (0 and 1) are encoded using differing lengths of low time ir pulses the 3 5mm ir in/out port has the following pinout · tip 3 3v\@50ma · ring ir input · sleeve ir output the sleeve is used as a ground during input operations serial input/output the hd1026 contains an uart (asynchronous serial) interface it is a 3 5mm (1/8") jack that connects a serial modem or other devices that use a serial connector, and it uses ttl for communication this 3 5mm serial connector uses standard rs232 (signal) levels and polarities the default baud rate of the interface is 115200, with no parity, 8 data bits, and 1 stop bit these settings can be configured in the software the serial interface supports tx, rx, and ground only—rts/cts hardware flow control is not supported the following diagram illustrates the behavior of the tx and rx signal the 3 5mm serial port has the following configuration (from the perspective of the player) tip transmit ring receive sleeve ground brightsign players are dte devices, so communication with another dte device that uses a 3 5mm port would require a null modem cable or converter that transposes the tx/rx signals if the device communicating with the player uses a de9 serial port, the serial cable should be wired as shown in the following diagram the hd226 does not support serial i/o audio connector hd226/hd1026 players have a dedicated 3 5mm stereo audio port and a combination analog/optical audio jack to transmit a digital audio signal, use an optical audio cable analog and digital audio cannot be transmitted simultaneously dolby audio is supported as a paid license the full scale voltage output of the analog audio is 2v rms the minimum load impedance is 32ω the analog audio connector has the following pinout tip left audio ring right audio sleeve ground for audio signal usb the hd1026 has a usb a 2 0 port to connect usb compatible devices this device provides 5v 1a over each usb port for peripheral devices the hd226 does not have a usb port wifi & antennas hd6 players are fitted with a e key m 2 connector which supports 2230 form factor m 2 cards for wifi (pcie interface) and bluetooth\[cw1] (usb interface) connectivity the recommended card is sold separately as brightsign wd 105 kit which includes two internal antenna cables and two external antennas which are fitted to the external sma connectors the internal cables are pre attached to the card (ipex4 mhf4 type) and must also be attached to the motherboard connectors (ipex mhf 4l type) behind the smas c ellular modem hd6 players are fitted with a b key m 2 connector which supports 4230 form factor m 2 cards for cellular modem (usb interface) connectivity the recommended card is the quectel em05 g iot/m2m optimized lte cat 4 module the external sma connectors can be used to mount two 4g/5g antennas appropriate for the region of intended use two internal cables with appropriate connectors will need to be sourced to connect the card to the antennas a nano size sim card socket is located on the pcb assembly the player supports the em05 g cellular module