Fujitsu Airstage AGUA12TLAV1, Дизайн и техническое руководство

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4-3. TRANSMISSION LINE
„ „
TRANSMISSION WIRING SPECIFICATIONS
Use Size Wire type Remarks
Transmission cable
22AWG
(0.33 mm 2 )
LEVEL 4 (NEMA)
non-polar 2core, twisted pair solid core
diameter 0.65 mm
L
ON
W
ORKS
®
compatible cable
Use the shielded wire specified and always ground it both end.
22AWG (0.65 mm) Level 4 cable with shielded (National Electrical Manufacturers Association
(NEMA) Differs from the Category 4 specification proposed by the Electronic Industries
Association / Telecommunication Industry Association (EIA/TIA)
„ z
Reference specifications for transmission cable
No. Item Unit Specifications
1
Wire type
mm
0.65dia (22AWG)
Twisted pair with shield
2 Pair (Twisted pair cable) Note 1 - 1P or 2P
3 Loop DC Resistance (20°C)
Ohm/1000feet
(Ohm/305m)
Less than 18
4 DC Resistance Unbalancing (20°C) % Less than 5
5
Dielectric Voltage
(Between conductor to conductor)
V/min AC 350
6
Insulation Resistance (20°C)
(Between conductor to conductor)
Mohm-km
More than 500
(after charging DC 500 V 1 min.)
7 Mutual Capacitance of a Pair
pF/foot
(pF/305mm)
Less than 17
8 Pair-to-Ground Capacitance Unbalance
pF/1000feet
(pF/305m)
Less than 1,000
9 Characteristic Impedance
772KHz
Ohm
102+ - 15% (87 to 117)
1MHz 100+ - 15% (85 to 115)
4MHz 100+ - 15% (85 to 115)
8MHz 100+ - 15% (85 to 115)
10MHz 100+ - 15% (85 to 115)
16MHz 100+ - 15% (85 to 115)
20MHz 100+ - 15% (85 to 115)
10 Attenuation
772KHz
dB/1,000feet
(dB/305m)
Less than 4.5
1MHz Less than 5.5
4MHz Less than 11.0
8MHz Less than 15.0
10MHz Less than 17.0
16MHz Less than 22.0
20MHz Less than 24.0
11 Cross talk attenuation (Note 2)
772KHz
dB/1,000feet
(dB/305m)
Less than 58
1MHz Less than 56
4MHz Less than 47
8MHz Less than 42
10MHz Less than 41
16MHz Less than 38
20MHz Less than 36
Note :
1 : Number of twist is not specified. However, it shall satisfy the electrical specifications such as characteristic impedance,
attenuation, etc. (Example : More than 40 times/m)
2 : Cross talk attenuation is applied when the twisted cable has 2 pairs (2P)
3 : Material is not specified. However, it shall be selected by considering the operating environment (Temperature,
Humidity), and the local regulation by the environmental condition (ROHS Directive, etc.)
4 : Mechanical specification is not specified. However, it shall be selected by considering the operating environment.
5 : Never bundle transmission cable with power supply cable.
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