Fujitsu Airstage J-II Series Design & Technical Manual page 606

4-3. TRANSMISSION LINE
„ TRANSMISSION WIRING SPECIFICATIONS
„
Use
Transmission cable
(0.33 mm
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.
Wire type
1
2 Pair (Twisted pair cable) Note 1
Loop DC Resistance (20°C)
3
4 DC Resistance Unbalancing (20°C)
Dielectric Voltage
5
(Between conductor to conductor)
Insulation Resistance (20°C)
6
(Between conductor to conductor)
Mutual Capacitance of a Pair
7
Pair-to-Ground Capacitance Unbalance
8
9 Characteristic Impedance
10 Attenuation
11 Cross talk attenuation (Note 2)
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.
Size
LEVEL 4 (NEMA)
22AWG
non-polar 2core, twisted pair solid core
2
)
diameter 0.65 mm
Item
772KHz
1MHz
4MHz
8MHz
10MHz
16MHz
20MHz
772KHz
1MHz
4MHz
8MHz
10MHz
16MHz
20MHz
772KHz
1MHz
4MHz
8MHz
10MHz
16MHz
20MHz
Wire type
Unit
mm
-
Ohm/1000feet
(Ohm/305m)
%
V/min
Mohm-km
pF/foot
(pF/305mm)
pF/1000feet
(pF/305m)
Ohm
dB/1,000feet
(dB/305m)
dB/1,000feet
(dB/305m)
- (06 - 42) -
Remarks
L W ®
ON ORKS
compatible cable
Specifications
0.65dia (22AWG)
Twisted pair with shield
1P or 2P
Less than 18
Less than 5
AC 350
More than 500
(after charging DC 500 V 1 min.)
Less than 17
Less than 1,000
102+ - 15% (87 to 117)
100+ - 15% (85 to 115)
100+ - 15% (85 to 115)
100+ - 15% (85 to 115)
100+ - 15% (85 to 115)
100+ - 15% (85 to 115)
100+ - 15% (85 to 115)
Less than 4.5
Less than 5.5
Less than 11.0
Less than 15.0
Less than 17.0
Less than 22.0
Less than 24.0
Less than 58
Less than 56
Less than 47
Less than 42
Less than 41
Less than 38
Less than 36