Ku DiSEqC 1.2 Seminar on Polar Shaft

1. What is DiSEqC 1.2?

DiSEqC is a compound word of English Digital satellite Equipment Control, literally translated as "digital satellite equipment control".

DiSEqC is actually a control protocol, not some kind of hardware. Since there are different versions of a protocol, version 1.2 is a protocol version of DiSEqC, which belongs to the polar axis control protocol. The control of the polar axis is digital, which is different from the previous mechanical control. The control and power supply to the polar axis seat are realized on a coaxial cable. In addition, we often see signs printed with different DiSEqC versions on the front or rear panel of the receiver, indicating that the receiver has been installed with software for different DiSEqC control protocols.

DiSEqC 1.0 is often used to control the IF switch with more inputs and one output;
DiSEqC 1.1 is an expanded version of 1.0;
DiSEqC 1.2 is to drive and control the push rod or polar shaft seat;
DiSEqC 2.0 has the function of two-way control, and peripheral devices will have information transmitted back to the digital satellite TV receiver.
2. In daily use, is it necessary to manually control the work of the polar axis seat every time the star is changed (that is, from the current satellite star position to another satellite star position)?
After debugging the DiSEqC 1.2 polar shaft seat, it works with a receiver or controller with DiSEqC 1.2 function in daily use. According to the requirements of receiving programs on different satellites, the user completes an accurate satellite positioning in a receiver or controller with DiSEqC 1.2 function, and after each star change after this, DiSEqC 1.2 polar axis base will be based on the reception The received command automatically rotates and accurately points to the target star. The satellite positions that are accurately located appear in the form of star positions in the receiver or controller. For how to memorize the star position in the receiver or common controller, please refer to the instruction manual of the receiver or common controller.

3. In daily use, should the elevation angle of the polar shaft seat be adjusted every time the star is changed?
The polar axis antenna is designed according to the working principle of the polar axis. No matter what form of polar axis antenna, after it is adjusted once, do not adjust it in daily normal use.

4. How to adjust the polarization angle of the tuner when changing stars?
When installing the polar axis antenna, the tuner has been strictly fixed on the antenna tuner according to the requirements. In fact, the reason why we install the high-frequency head in such strict requirements is to ensure that the vertical signal probe in the high-frequency head cavity (because the horizontal signal probe and the vertical signal probe intersect at 90 °, we will not discuss here The position of the horizontal signal probe) is vertical to the ground at the “0 °” position of the polar shaft seat. When in use, no matter which direction the polar axis antenna rotates, the vertical signal probe in the cavity of the high-frequency head always forms an angle with the center line of the polar axis seat. This angle is also the high frequency that we often talk about. Polarization angle of the head. It can be said that the polarization angle of the high-frequency head of the polar axis antenna is automatically adjusted. 5. DiSEqC 1.2 polar axis setting method in XSat410:
(1) After pressing the main menu, enter the "antenna and other settings" option.
(2), select the "antenna and TV settings" option to enter.
(3) Select the "antenna setting" option to enter.
(4) In the "Antenna Settings" option, select the antenna type in the menu (press the left and right keys) as "Motor DiSEqC". Press the key to modify the tuner local oscillator;
After modifying the local oscillator, press the left button to enter the "Search Satellite Selection Bar". In this "selection column", we can modify the name of the satellite to be received for selection. After all options have been modified, press the blue function key to save and return to the upper menu.
(5), enter the "antenna positioning" option. There are six types of “antenna positioning” options: “manual search”, “positioning”, “return to previous position”, “return to zero degree position”, “search by signal strength” and “search by signal strength and signal-to-noise ratio” Use the left and right keys to select function items.
In the above function items, "manual search", "search by signal strength" and "search by signal strength and signal-to-noise ratio" all command the antenna to turn to find the star (press the up and down keys to order the antenna to east, Western rotation). However, "manual search" is pure manual search, and "positioning", "search by signal strength" and "search by signal strength and signal to noise ratio" are automatic searches. Regardless of the search method, you must select the right program parameters on the satellite you want to search and locate (press the Info key to select). After the antenna searches for the satellite (signal strength and signal-to-noise ratio are maximum), press OK to open the star position save menu, and then press the green key to save.
(6) After storing the star position, press Ret to return to the main menu.
(7), then enter the "scan satellite" of the "receive program" option. Press the left and right keys to select "Scanning Mode", move the cursor to the "Satellite" option, and select the name of the satellite you will search. Just select the satellite name and add the parameters on the satellite, press OK to start, the polar axis will automatically turn to the stored star position of the satellite, and search for programs.
In future use, as long as we switch programs on different satellites, the receiver will automatically drive the DiSEqC 1.2 polar axis antenna to rotate and accurately locate the star position of the star where the selected program is located.
6. English words encountered when setting DiSEqC 1.2 polar shaft seat:
(1), Goto ×× funcTIon: It is a DiSEqC 1.2 function. Fill in the latitude and longitude of the installation site of the polar axis in this function item. When using, just select the satellite name and fixed point location you want to find in the menu, and the DisEqc 1.2 polar axis antenna will automatically turn to the satellite. The disadvantage is that the latitude and longitude must be filled accurately.
(2), posiTIon: location. It refers to the position code of the stored star position after positioning the polar axis antenna to a certain star position by manual method.
(3) Drive to 0 or Goto 0: return to "zero", the antenna returns to "0 °" of the polar shaft seat.
(4), Set east (west) limit: Set the limit position of east (west). It is to set the extreme position of the east (west) by software.
(5), Disable limit: abolish the limit position.
(6), Recalculate or Reset: reset. Clear the star positions that have been memorized in the receiver and reset them.
(7), Store: store. Save the set star position.
7. DiSEqC 1.2 polar shaft base rotates and stops frequently under the drive of XSAT4 * 0?

Similar to this phenomenon, there may be the following reasons:
(1). There are other devices (such as changeover switches, line amplifiers, etc.) connected in series between the receiver and the polar shaft base, or the polar shaft base and the high-frequency head. These devices will interfere with the DiSEqC 1.2 control signal from the receiver or shunt the receiver to supply the pole shaft current. If the above situation occurs, it is recommended to place these serially connected devices.
(This fault phenomenon and solution are provided by Xiaogu, Chaoyang, Guangdong. We are grateful for this !!)
(2) The receiver has set the limit position or the old limit position or star position is left in the memory of the polar shaft seat. Because the user accidentally set the limit position of the polar shaft seat when using the receiver to control the polar shaft seat or did not clear the limit position left in the internal memory of the polar shaft seat; in addition, because we sometimes often Changes (after deleting, and then adding) the star positions of some satellites, even though the star positions have been deleted in the receiver, the deleted star positions will also be remembered in the memory in the polar pedestal. The next time the satellite position is set again, the polar pedestal will memorize the two old and new star positions and cause control disturbance.
In the XSAT4 * 0 receiver, the method to delete the limit position is: Press the "MENU" button of the remote control to enter the main menu of the receiver, select the "Antenna and TV settings" option, enter; then select "Antenna settings" Options, enter. In the "antenna setting" option, press the "Guide" button on the remote control to enter the setting "limit". After entering the “Limit” item, press the red function key on the remote control again to delete the originally set limit position.
In the XSAT4 * 0 receiver, the method of clearing the remaining star position is the same as the method of deleting the limit position, and it is necessary to enter the "antenna setting" option. Before confirming the new star position, press the "OK" key on the remote control to enter the star position storage menu. There are three options in the star position storage menu. We first press the red function key of the remote control to select "Recalculate and Save", and then exit the star position storage menu after confirmation.
After we press the "OK" button of the remote control to enter the star position storage menu, press the green function key "save" of the remote control. In this way, we can remove the old star positions that were left in the internal memory of the polar pedestal and store the new star positions.
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