laser pointer has some obvious merits

Phenomenon: the semiconductor laser is not bright red indication. Cause: The battery power, frequent contact with the semiconductor laser bad or worse. Remedy: In practice, laser removal of the old instructions, and replaced with regulated power supply of the semiconductor laser is better. The customer is a member of this  laser pointer  website.
Special attention: JSY-01-type pulsed Nd: YAG laser radiation is very high laser power, the process a little careless with the laser will damage the body or goods. Ranging from burn clothing, skin burns, eye weight is causing permanent blindness, so the instrument starts, allowed to look into the laser cavity, the absolute prohibition of direct or reflected laser injected into the eye, the officer should wear laser protective glasses; If exposure to combustibles on the fire. In addition, the laser pump power, and Q-trigger circuit using high-voltage power supply, accidental contact can cause personal injury. Phenomenon: in the case of intact probe could not be determined oscilloscope waveform. Reason: The inappropriate use of the pulse type. Probe than the right. The  laser pointer market is already built. This kind of  laser pointer  has some obvious merits. Remedy: Check the type of pulse used, the general use of pulse type edge, to select rising edge or falling edge. Click the channel used, the probe ratio of 10:1. Phenomenon: a single pulse on the oscilloscope single key pressed, run / stop key is always red, oscilloscope graphics flashed. Reason: small level. Remedy: appropriate level of transfer will be large, so that the waveform can be stopped. Phenomenon: the probe to detect the signal. Reasons: the probe circuit board Weld, together with the wire is too long. Remedy: According to the circuit, the number of discrete components required for welding into the probe. Soldering iron components, welded components have to be strong, not Weld, the best pin photodiode with a wire connected with the circuit board, which helps to protect the photodiode, a good soldering circuit boards to be clean, the wires used to is short. After welding should be debugging. The low cost and expense of  laser pointer  is very attractive.
YAG laser at the receiving probe laser beam emitted when the laser beam energy should be about 4%, that is out of the laser perforation at the receiver with a frosted glass, frosted glass on from the 15-20 point range to reflect the probe,