Chapter 8 Trunk Cable Installation
8-9
Chip
Chip
Network
device
2
1
4
3
5
RJ-45 socket
RX shielding
8
7
6
JP1
GND
Signal
JP2
Signal
GND
TX
RX
TX shielding
Fig. 8.3-2 Wiring of the Impedance Converter
See Table 8.3-1 for the specific wiring relation.
Table 8.3-1 Wiring Correspondence of the Impedance Converter
RJ45 Socket
Chip
Function
1&2 JP1
TX
pair
3 JP1
TX
shielded
4&5 JP2
RX
pair
6 JP2
RX
shielded
8.3.3 Technical Parameters of the Impedance Converter
Technical parameters of the impedance converter are as follows:
1. ITU-T G703 standard compliant
2. Rate: 2.048 Mbps
3. Balanced interface: 120
Ω
RJ45 (8P8C, with shielded end)
4. Unbalanced interface: 75
Ω
BNC (female)
5. Temperature: 0 °C – 50 °C
6. Humidity: 5% - 95% (non-condensing)
7. External power supply: unnecessary
8. Insulation:
100V
Summary of Contents for ZXC10 BTSB I1
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