Audio Optical Features:
Digital uncompressed transmission â— Video adopts 8-bit digital coding â— Color image signal â— High-quality real-time transmission â— 10Hz-24kHz audio and audio width â— Fully compatible with NTSC, PAL, SECAM system image â— Can transmit RS232, RS485, RS422 standard data â— Simultaneously â— Ethernet signal transmission indicator can help make a quick diagnosis â— high reliability under all outdoor conditions for system failure support network management functions â— â— easy to install, no need to adjust a few important indicator <br> <br> Optical audio
1, the bit rate. 16bits20bits24bits, the higher the bit rate, the more subtle changes in the sound can be reflected.
2, sampling accuracy. 48K96K (CD sampling accuracy of 44.1KHz / s), professional audio optical transceivers generally use 48K sampling, 96K is a future direction.
3, signal to noise ratio. That is, we usually say the dynamic range, the unit is DB, the relationship between dynamic range and bit rate is: For each bit increase in bit rate, the dynamic range increases by 6dB. At 16 bits, the dynamic range is 96 dB. This can meet the general needs, 24 bits can achieve a dynamic range of 144dB, is a fever level. Therefore, the current professional optical transceiver indicators can be summarized as: 24-bit 48K sampling 90DB.
The audio optical transceiver is divided into 1 to N channels of audio or plus 1 channel of control data, but also pay attention to mono/dual (and stereo), unidirectional/bidirectional, balanced output/unbalanced output details in the audio.
Thermoplastic polyolefin (TPO) waterproofing roll material adopt advanced polymer technology combined EPR (ethylene propylene rubber) together with polypropylene into thermoplastic polyolefin (TPO) synthetic resin as base material , adding antioxidants , anti-ager and softener to be made the ne w-type waterproofing roll material.
Performance Characteristics:
Anti-aging ,high tensile strength ,high elongation ,moist roofing can construction, exposed no need protective layer, easy construction and non-pollution. It is very fit to be the waterproofing layer of light energy-saving roofing.
Executive Standard:
GB27789-2011
Specification:
Length: 15-20m or other length
Width: 2- 3m
Thickness: 1.2-2.0mm
Application:
light steel structure roofing , building underground waterproofing, used on light steel roofing , drinking water reservoirs, bathrooms , basements , tunnels , grain depot , subway , reservoirs and other waterproofing moisture-proof projects.
Technical datas
Specification
H
L
P
G
GL
The resin thickness of Middle fabric, mm≥
-
0.40
Maximum tension,N/cm ≥
-
200
250
-
200
Tension strength,Mpa≥
12
12
Maximum tension elongation,%≥
15
Fracture elongation,%≥
500
250
400
200
Heat treatment size change rate %≤
2.0
1.0
0.5
0.1
0.1
Low temperature bend
-40°C No crack
Water tightness
0.3Mpa,2h, No seepage
Attack resistance
0.5kg·m,No seepage
Static charge resistance
-
20kg ,No seepage
Seam strip strength ,N/mm≥
4.0 or Membranes break
3.0
Right-angle tear strength,N/mm≥
60
60
Trapezoid tear strength N≥
-
300
450
350
Bibulous rate
(70°C 168h), %
After soaking≤
4.0
Air-cure later≥
-0.40
Heat aging
(115°C)
Time
672h
Appearance
No blister,flaw,delamination,coherence,hole
Tensile strength retention,%≥
90
Elongation rate of keeping,%≥
90
Low temperature bend
-40°C, No crack
Chemistry
resistance
Appearance
No blister,flaw,delamination,coherence,hole
Tensile strength retention,%≥
90
Elongation rate of keeping,%≥
90
Low-temperature bending
-40°C, No crack
Artificial weather accelerated aging
Time
1500hb
Appearance
No blister,flaw,delamination,coherence,hole
Tensile strength retention%≥
90
Elongation rate of keeping%≥
90
Low temperature bend
-40°C ,No crack
TPO Waterproofing Roll Material
Tpo Waterproofing Roll Material,Tpo Roofing Waterproof Membrane Material,Waterproof Membrane Material,Tpo Roof Waterproof Material
Shandong Tianhai New Materials Engineering Co., Ltd , http://www.chinatinhy.com