For high frequency machine used than in the line of those who have a very clear understanding, but there are about interference signal spectrum analysis you have understood the thing?

　　The Power output frequency oscillation tube itself and the output signal, so its poor stability of the fundamental frequency will be with the cabinet temperature and operating conditions (output power adjustment and the workpiece size, thickness, etc.) fluctuate, though variation only a few tenths of a megahertz, it may be by an individual channel interfering signals transferred to the adjacent channel.

　　Prevent and mitigate the high frequency interference measures:

　　Build factories in good shielding system, with 0.3 galvanized sheet or a small wire mesh shielding purposes around the 50mm iron pipe into the ground 2-3 meters every two meters hit a mesh of the shield with iron pipe connection, so that high-frequency signal is not easy to radiate out from the factory, played overall shielding effect. Racks and enclosures will be good high frequency grounding, strengthening the body shielding, radiation is recommended to reduce body width 50mm × 50mm or more, the length is not less than 2m of angle iron into the ground as grounding, then more than 10mm2 copper wire rack to high frequency and the shell is connected with the grounding. Connection should be as short as possible, do not circle, try to avoid turning, so you can enhance the body part of the high-frequency shielding to reduce interference signals radiated intensity. If the car (room) room at more than one frequency machine, preferably each frequency (or two adjacent) are buried in the machine next to a nearby ground.

　　Adjust the position and direction of frequency:

　　If the housing wall hanging cables, high frequency best to set away from the end of the cable. In addition, ordinary type high frequency tube chassis in two directions at right angles to success is to use galvanized steel galvanized angle iron rack fixed to the shield, the radiation is weak, should be based on these two directions toward the cable or near the TV users. Good grounding cable networks, selecting the best location for the cable near high-frequency amplifier and strand must be grounded in order to strengthen its shield capabilities. Cables hanging in a high-frequency machine housing wall, to choose in the reinforced concrete structures (such as ring beams, cement more and floor) outside the test, not to vote on the brick wall outside, so that the cables exposed to radiation weaker.

　　Adjust the amplifier or cable position:

　　When the amplifier close to the entrance when the cable away from the high-frequency (10m or less), the amplifier can be moved forward, to export the cable near high frequency, because here the television signal level is high, help to increase television signal and intrusive interference level difference, or adjust the trunk cable, so a little far away from the high frequency machine point.

　　Cable connector to ensure reliable:

　　The connection between the amplifier as far as possible through-type connector, connector lines to do ordinary norms, reliability, special attention should be waterproof joints, causing water to avoid joint outer conductor braid mold off, leading to poor shielding string into the interfering signals.

　　Only two meters with high frequency within close range of users, the measures can be taken:

　　1, to ensure or enhance the user signal level of each channel to ensure user entry level is not less than 65dB, as up to 75 ~ 80dB.

　　2, the indoor without user boxes, home line directly connected to a TV plug, if more than one is a TV then sealed type splitter or splitter directly connected to a TV.

　　3, the user must use a cable laying indoors Qualified or four shielded cable, disable inferior cable less than 10m away from the high-frequency machine user is best to use aluminum cable households.

　　4, Indoor TV as much as possible without plastic injection pressure plug line.

　　5, good plugs, try not to plastic injection pressure plug wire (its internal easy desoldering and easy to find), the use of hand-crafted four shielded cable plugs.

　　6, after receiving complaints from users fault, first for a new plug wire to try, if the problem is resolved, then the user plug cord cut redo, otherwise then check the indoor cables and connectors, and even outdoor cable connection .

　　Companies adhere to the "quality first, users first" business philosophy. To provide customers with installation, commissioning, training, service, technical consulting train service.