VU Header Audio Effects Amp DB Meter Sound-Pressure Backlight

Appearance
1. movable part: moving coil type
2. appearance method: See BL-35
3. degrees board: See BL-35
4. pointer material: Nickel silver strips
        Pointer color: brown
        Pointer swing direction: from left to right
        Pointer length: 17.3 ± 1 mm from the central axis to the needle end
        Pointer width: 0.45 ± 0.05 mm
5. Meter direction: Vertical
 
  Electrical performance
6. standard test conditions: temperature 20 ℃, humidity 70%, for the test results do not differ,
Can also be tested at room temperature and humidity
7. Current sensitivity pointer at zero scale to maximum scale (full scale position) Sensitivity 500 uA ± 10%
8. Internal Impedance 650 Ω ± 10%
9. Insulation resistance meter box plus electrical circuit with 500V DC plus 50M ohm above the meter shell and
  Insulation resistance of electrical circuits, is 500V DC voltage test insulation value
10. zero position meter using the standard posture, the front of the pointer and the center of the zero scale as a reference
  The tolerance between the pointer and zero scale overlap is ± 1mm
11. Balance meter using the standard position tilt angle of 90 degrees before the allowable error range of ± 1mm
12. pointer sticking moment plus full scale current three times over current, slowly reducing to the current sensitivity of 1/2 reading,
  At this point the pointer will be back to the scale 1/3 scale range
13. friction electric current meter, slowly increase or decrease to a certain value, the error of the indication point ± 1mm
14. Braking moment plus 2/3 of the current value of the scale, from the beginning to the time required to indicate the location of the pointer within one second

 Special test
15. Overload Test Input ten times the full scale current every five seconds, which is repeated nine times for 0.5 seconds each
  After this test 7-14 remain normal
16. vibration test Meter after the vibration plate on the vibration 1,000 times per minute up and down 4mm,
  Each direction for 10 minutes after this test 7-14 to maintain normal
17. Impact Test The meter is packaged and dropped from a height of 30 cm to a 3 cm thick plank, X.Y.Z. Three-Direction Test
  After this test 7-14 remain normal
18. Reliability test 100,000 calibration point current input, the current sensitivity limit is still within the standard
19. Environmental Impact Test Temperature 50 ℃, humidity 85% for 100 hours, after this test 7-14 to maintain normal
20. TERMINALS Tensile test terminals must withstand 1 kg pull for 60 seconds without impact

Others
21. Operating Temperature Limits -10 ℃ to + 60 ℃ RH 35 to 85%
22. Storage Temperature Limits -20 ℃ to + 60 ℃ RH 35 to 85%
  Do not put the meter in direct sunlight, and the meter stored in the box to prevent foreign objects into the meter
23. Solder Conditions Place the terminal approximately 3 mm into a tin plate at a temperature of 230 ° C for 3.5 seconds
  After this test 7-14 remain normal
  Soldering temperature Handheld solder gun temperature 350 ℃, the terminal contact 3.5 seconds, the front terminal about 3mm Contact with the solder gun
  After this test 7-14 remain normal
24. anti-static dry nylon cloth in the transparent cover surface test in the same direction three times, marking the pointer difference in the scale length
  Less than one-third of the time, zero position after three seconds
25. Bulb Specifications Blue LED * 1 3.0V (backlight voltage of 12V can be designed for free)


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