User's Manual

© RF Technology 2007
20 Line output - Output: balanced 600ohm,
300 to 3000Hz, -20dbm to +10dbm
8 GPS 1 pulse/sec input Input: +3.3V to +15V TTL logic
21 Monitor speaker output Output: unbalanced 8 ohm
300 to 3000Hz, 3 Watt maximum
9 System serial bus, Data in Input: +3.3V TTL logic
22 System serial bus, CS0 Output: +3.3V TTL logic
10 System serial bus, CS1 Output: +3.3V TTL logic
23 T/R relay output Output: open collector, Imax = 100mA
11 External squelch input
Input: Low active (Vin ≤ +2.5V)
24 Spare GPIO input
Input: Low active level ≤ +2.5V)
12 Spare GPIO output Output: open collector, Imax = 100mA
Table1: D25 System I/O Connector signals
2.1.2.2 E/M Line:
This RJ45 connector provides easy connection to the equipment such as microwave
links, the signal of the E/M line connector is described in table2.
Pin No. Description Specification
1 E+ Input: 10V to 48V
2 E- Input: 10V to 48V
3 Line out + Output: balanced 600ohm,
300 to 3000Hz, -20dbm to +10dbm
4 Line out - Output: balanced 600ohm,
300 to 3000Hz, -20dbm to +10dbm
5 Line in + Input: balanced 600ohm,
300 to 3000Hz, -20dbm to +10dbm
6 Line in - Input: balanced 600ohm,
300 to 3000Hz, -20dbm to +10dbm
7 M+ Output: sink current 150mA
8 M- Output: sink current 150mA
Table2: RJ45 E/M Line Connector signals
2.1.2.3 Ethernet:
The RJ45 Ethernet connector is used for networking the base station via IP protocol, a
host PC can use this connector to monitor and control the base station locally or
remotely.
The transceiver supports 10/100Mbs specification (defined by IEEE802.3u) and
MDI/MDI-X auto crossover function which means either straight though or crossover
cable can be used to connect the base station.
There are two LEDs embedded in the RJ45 Ethernet connector, the green LED
indicates that the Ethernet link is active; the yellow LED indicates TX/RX status between
the base station and the network.