Measuring instrument and tool for production and repair
It is THS710 type digital oscilloscope of Sony Tektronix that I am using. It is necessaries in the repair of the television. A rechargeable battery is deteriorated in several years though it is possible to use with AC adaptor or a rechargeable battery.
I like analog oscilloscopes more though a digital oscilloscope is also good. A wavy, detailed point sees the analogue well.
The main specification
Analog bandwidth 60MHz
Sample rate 250MS/s
Number of channels Two channels
Oscilloscope waveform of the collector pulse
This photograph is the oscilloscope waveform of the collector pulse voltage of the horizontal output of the television.
Oscilloscope waveform of the vertical output
This photograph is the oscilloscope waveform of the vertical output voltage of the television.
It is a typical shape of waves of the television of the cathode-ray tube type though this is a shape of waves of National television TH-29VS35. Because electricity is not visible, it is the one that understands so that the operation of the electrical circuit may take it by observing the shape of waves with the oscilloscope.
As for the oscilloscope, I want one in an efficient repair and production.
Electric field strength measuring instrument
It is 952 type TV/SAT electric field strength measuring instrument of the leader whom I am handling. It is necessaries in the adjustment of the antenna system. I am always using it by rechargeable eight batteries of a single type though it is possible to use also with the dry battery.
It is possible to display it like the Spectrum analyzer it is anxious that power consumption is large though the performance is good because the setting of the channel can be freely changed.
The level difference of each channel is checked whether the signal carrier of the voice is an enough signal level whether it is -6--10 a dB compared with the image in the antenna adjustment of UHF/VHF measuring the level of the sound carrier at the same time with the video carrier. The reflected condition is imaginable even if the television is projected if it does so and it doesn't see.
As for an enough signal level, the level of the signal carrier of the image and the voice is the same or it reverses and reflecting of the television is not good either.
NHK-FM and the right are 3, 5, 9, 11, 23, 25, and are the images of 35 channels and the levels of the signal carrier of the voice in the screen of the electric field strength measuring instrument leftmost.
Current consumption Time 9V about 500mA (about 1A when +15V supplying it)
Analog tester and digital tester
DA-54LS digital multimeter of Sanwa that I am using It is YX-361TR analog tester of (left) and Sanwa (right). Special high-level goods are not necessary for the repair etc.
I think that I use an analog tester easily than a digital tester. It is not understood at all that the value changes in digital. If it is analog, it might be predictable in how of the needle to swing. When the capacity of the electrolytic condenser is seen with the ohmeter, it is impossible if it is not analog.
This can use it as a wattmeter that can measure a true alternating-current power by characterizing that other models do not have though this is a digital multimeter. It is M-3860M of METEX. The electric power of inductivity and a capacitive load is basically written that it is not possible to measure it in the manual. However, even the current, the voltage, the electric power, and moment of force can be measured when measuring it.
The range of the electric power measurement is 16A 250V 4kW. Because the electric power measurement adaptor part in the lower right of the photograph had broken at once, it made it with the plug and the outlet like the left.
The one that a true alternating-current power can be measured is few, and this is valuable meters.
It is DM-1525 megohmmeter of Sanwa that I am using. It uses it to inspect the repair and the leak.
It is necessaries for the completion inspection of electrical work. The electrical work trader cannot register if there are at least neither this, an earth resistance meter nor a circuit meter (tester).
The inspection voltage is DC250V, 500V, and 1000V. The direct voltage of the minus has gone out.
DC250V might be too high for the inspection of the leak of the equipment. It is because connection might be done when parts that are called the varistor or ZNR have adhered. It is necessary to note it so as not to put the equipment out of order by mistake at the inspection. It seems to be able to measure it also with about DC125V in a recent model.
Solder vacuum pump
It is solder vacuum pump ( HS851 of solder vacuum pump and the [ho-zan] tool). It puts it away. Serious power is demonstrated in the exchanges such as IC.
Holing the machine (..sopping up.. container) sopping up ahead one small is open, it is connected to hose it in the root, and sucks it out with the pump. The switch of the device is VR for the temperature setting to keep [kote] previous temperature to be constant. It never overheats while turned on power.
It tries to exchange vertical inclination outputs IC of the National television called TH-29VTS25. The standing substrate has adhered on the main substrate further, and IC has adhered to this substrate though there is IC in a central part in a left photograph.
First of all, the standing substrate is removed from the main substrate. The machine ..sopping up.. is applied as shown in a right photograph and the solder of the main substrate is [suitori]. And, the standing substrate is removed.
IC in the substrate that stands is this time removed. In the same way, solder is completely absorbed with the machine that absorbs solder. When IC is exchanged, it solders with the foot of IC.
Next, it installs it according to the procedure opposite to the procedure for detaching it. It is very troublesome work.
The exchange of parts that tie to the substrate IC and the substrate is impossible without the machine that absorbs solder.
It cleans it at each use because a previous nozzle of the machine that absorbs solder is blocked with solder. Moreover, the solder sometimes collected is removed.