12Volt 2 Channel Video Switch Setup and Utilization Manual Introduction Thank you for purchasing the 12 Volt 2 channel Video Switch. This revolutionary device will allow you to switch between two 12V cameras or two video sources using your RC transmitter. Please note: note: You cannot use this device to switch between a 5V and a 12V camera. Both cameras have to be 12Volt. The PPM RC transmitter/receiver uses pulse modulation for the signal which controls your RC Equipment in the plane. These pulses occur every 20ms, and their length may vary from 1ms to 2ms. By electronically checking the length of the pulse, we can determine the position of the transmitter stick. You may also switch on your RC transmitter in order to decide which video channel to select for the output. The switching between the video sources occurs in less than 1ms. This gives a few barely noticeable switching frames on your outgoing video. This device will measure the incoming pulses from your R/C receiver, and it will switch from Input A to Input B depending on the position of the RC switch or stick on your transmitter. Device and Pin Description The 12V 2 channel mini video switch uses servo type connectors. The pin settings on these connectors are the same as on the servo connectors: Pin 1: GND (Black Wire), Pin 2: +12V (Red Wire), Pin 3: Signal (Yellow, Orange or White wire). All 3 connectors on the Mini RC Video Switch follow the same configuration. As for your reference, on the bottom of the circuit board there are markings indicating which signal comes to which pin. Please check out the following picture as reference: The Input connectors are one above the other, and on the right side of the above picture. The bottom of the circuit board will indicate which connector belongs to which input, and on the right of the pins you can see markings like: GND for Ground (Black Wire), + for +12V (Red Wire) and s for signal – in our case, this is the incoming video signal represented by the White, Yellow or Orange wire depending on the manufacturer of your servo cable. The cable, connecting your Video switch to the RC receiver, is also a standard Servo cable. Please follow the instruction manual of your RC receiver for the orientation and connection of this to your receiver. Features The 12Volt 2 channel mini video switch has some nice in-built features in order to make the use of this device much more enjoyable. The programming on the microprocessor of this switch incorporates the following features: - It allows you to use it on a switch or a stick on your transmitter radio; - There is a safety feature built in, which will allow the switching to occur only after it received 5 valid switching signal pulses. This happens in about 100ms, so one cannot notice this timeframe, but it is enough for the device to prevent accidental switching caused by an RC glitch. - Additional safety feature: In case the RC signal is lost, the device will switch back to Input 1 after about 4 seconds. The rationale behind this is the following: In case you have a forward and a backward facing camera, and you loose RC control while looking backwards, the device will switch back to the forward facing camera (assuming that this is connected to Input 1) in order to allow you to look forward and resume flying the plane with forward view once you regain control. This feature is always useful to notify you that you are dangerously close to loose RC control of your plane. (Please Please note: If you are using a Switch on your transmitter transmitter to control the Video switch, as soon as the RC signal comes back, the video switch will switch back to the camera which is corresponding to your switch position) position Setup Instructions Before connecting the 12Volt 2 channel video switch to your receiver, please decide which channel you would like to use for it. In our example, we use Channel 5. On the selected channel you should be able to adjust the so-called Endpoints, Travel or ATV. Make sure that you plug the cameras to Input 1 and Input 2 while respecting the pin assignments. Reversing these connectors may harm your camera, so please be sure that you connect the wires in the proper direction. You will need to supply a cable to connect the output to your transmitter. The pin settings, as described above, follow the pin settings of a standard servo wire, where black is the Ground wire, Red is the +12V and white, yellow or orange will be your signal – in this case Video Out signal. In case your transmitter does not supply +12V, you will need to connect the red wire to a properly filtered, regulated +12V power supply line. Make sure the transmitter, cameras and the video switch has a common ground. The servo cable attached to the 2 channel video switch is supplied with a proper servo type connector, so you can plug this into your RC receiver. Once you have chosen the channel you would like to operate the RC switch on, you will need to make sure that your transmitter has either a switch or a stick assigned to this channel. On some transmitters, Channel 5 is set automatically to a switch for the landing gear, but you may need to use a different Channel in case you use a head tracker or any other device that requires access to Channel 5. Now you can plug the connector in the selected channel on your RC receiver, and make sure that you respect the orientation of the connector. In case you plug this in reverse, it will not harm the device, but the device will not operate. After one last careful check to see that everything is plugged in correctly, you can turn the power on. Right after turning on the device, the picture received from the source connected to Input 1 will be displayed on the Output line – unless the switch assigned to the device is in the opposite direction. In that case, the picture coming from the source connected to Input 2 will be displayed on the Output. At this point you can flip the switch assigned to the 2 channel video switch into the opposite direction, and the picture should flip from one camera to the other. Please note: Initially after the power on the device will require 2 or 3 flips to recognize the switching request, but once it has learned it, it will switch at each flip of the switch. In case if no switching occurs when you flip the switch, you will need to adjust the ATV or endpoints on the selected channel to 100-110%. Technical Specifications Supply Power: The 2ch video switch should be powered from a regulated 12V power supply where the supply voltage should not exceed a maximum of 12V. The 12V is pass through, it will supply your cameras through the servo cable with the same source 12V which is connected to the switch. Pulse range: The 2 channel video switch is designed to switch based on the pulses coming from the receiver within the following limits: Position Lowest Middle Receiver Output Pulse Length 1.0 ms 1.5 ms Highest 2.0 ms Switching occur When signal is less than 1.2ms No switching while the signal is between 1.2ms and 1.8ms When signal is more than 1.8ms The Middle range is included in the calculations to accommodate requests to have this switch assigned to a channel which can be controlled by a stick on your transmitter. In that case, just slightly pushing the stick to the left or right position will flip the image on the output. Connection Cable Length: Standard Hitec 24 gauge servo wire approximately 12” (inches) or 30cm (centimetres). Receiver Connector type: Standard 3 pin Hitec servo connector. Troubleshooting In case you have any concerns or problems using this device, please contact us at firstname.lastname@example.org or through the “Contact Us” page at www.nghobbies.com Copyright @ 2008, New Generation Hobbies.
* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project