ECLIPSE2 SERIES RBS150 VHF BASE STATION OPERATION AND MAINTENANCE MANUAL RF TECHNOLOGY http://www.rftechnology.com.au November, 2007 Ver. 0.0.
Conformity of USB Device Any ITE equipment attached to this device will need to be either certified or covered by a FCC declaration of conformity © RF Technology 2007
WARNING Changes or modifications not expressly approved by RF Technology could void your authority to operate this equipment. Specifications may vary from those given in this document in accordance with requirements of local authorities. RF Technology equipment is subject to continual improvement and RF Technology reserves the right to change performance and specification without further notice. PART 1: INTRODUCTION The Eclipse2 series is a new generation base station developed by RF Technology.
PART 2: TRANSCEIVER 2.1 OPERATING BASICS The transceiver will need approximately 30 seconds to boot up after power up. When the transceiver is ready to operate, a voice report (if enabled) can be heard from front panel speaker, and Digital/Analog LED will indicate that the transceiver current working mode. 2.1.1 Front Panel Controls and Indicators The front-panel includes LED indicators, tactile switch buttons, a microphone connector and an USB (type A) connectors, refer figure.
Down Left Right Reset – – – – Press this button to decrease the speaker volume Press this button to change channel to next lower programmed number Press this button to change channel to next higher programmed number The reset switch mounted inside base station, used for reset the transceiver without power cycle, use a small pin (e.g. paper clipper) to access this switch 2.1.1.
20 Line output - 8 21 GPS 1 pulse/sec input Monitor speaker output 9 22 10 23 11 24 12 System serial bus, Data in System serial bus, CS0 System serial bus, CS1 T/R relay output External squelch input Spare GPIO input Spare GPIO output Output: balanced 600ohm, 300 to 3000Hz, -20dbm to +10dbm Input: +3.3V to +15V TTL logic Output: unbalanced 8 ohm 300 to 3000Hz, 3 Watt maximum Input: +3.3V TTL logic Output: +3.3V TTL logic Output: +3.
2.1.2.4 RF input: The receiver RF input connector: 50ohm female, N type. 2.1.2.5 RF output: The exciter RF output connector: 50ohm female SMA. 2.1.2.6 RS232 and external reference clock (optional) The female D shell, 9-pin connector is an optional interface to the transceiver. RS232 and external reference clock (EXT_RFE) signals share this connector. The pins of the connection are described in table 3. Pin No.
2.2.1 Connecting with Ethernet Ethernet is the most powerful interface of the base station, especially for remote monitoring and controlling via Internet. Each base station has a unique IP address, to connect, the host PC must be in the same sub net with the base station. 2.2.2 Connecting with USB The front-panel USB connector can be also used for connecting to host PC, the operation system need a proper driver to recognize the base station.
The 10/100Mbps Ethernet Physical Layer single chip transceiver (U10) provides the interface between RISC processor and the Ethernet. A serial ATA cable is used for connecting between the Master board and System interface board. The DSP (U2) is a 32-bit fixed-point digital signal processor, it provides the base band processing such as: modulation, demodulation, RSSI/SINAD calculation, sub-tone encoding/decoding and audio processing of the base station.
shifted by the bias circuit which is controlled by the RISC processor to give the maximum dynamic range for the ADC. The CODEC has two identical channels, the output of channel 1 is used for line output. PCM signal from the DSP is decoded to analog audio, and amplified, buffered by opamplifier U10, coupling through the line matching transformer (T2), and sent to the RJ45 E/M Line connector and the D25 system connector.
The Interface board accepts both TTL PTT input and E/M signaling, the TTL PTT is buffered by Q4,Q5, E/M signal is isolated by Opto-coupler U3 to system I/O level. The output of the RISC I/O logic is buffered by U1,Q1-Q3 for interfacing the external logic. The solid-state relay Opto-coupler is used to isolate the system I/O from E/M signal.
2.3.3.1 TX module The TX module can be divided into the VCO, PLL, PA and the Data storage section. The Voltage Controlled Oscillator (VCO) The Voltage Controlled Oscillator uses a junction FET (Q2) which oscillates at the required transmitter output frequency. Varactor diodes (D2, D9, D10, and D11) are used by the PLL and bias control circuits to keep the oscillator on the desired frequency. Transistor Q1 is used as an active filter to reduce the noise on the oscillator supply voltage.
A two-pole voltage tuned filter (D6, D7, L18-20, L23 and L24) is used to limit the RF bandwidth prior to the RF amplifier transistor Q1. The tuning voltage is supplied by the RISC processor through the bias control. The circuit values are chosen so that the centre frequency tracks the VCO bias voltage. RF amplifier transistor Q5 is followed by a second two-pole voltage tuned filter (D4, D5, L7, L11, L14, L21 and L22) which provides additional image and spurious frequency rejection.
2.4 FIELD ALIGNMENTS As the TX and RX module is pre-tuned for the whole operational frequency range and level adjustment of signal path is done by software (local or remotely), there is no field alignment required for optimizing the performance. 2.5 SPECIFICATIONS 2.5.1 Description The transceiver is a digitized, software upgradable radio, The exciter and the receiver can be configured as base station, repeater or the stand-alone unit.
2.5.3 Electronic Specifications: 2.5.3.1 Overall Frequency Range: Channel spacing: External reference: Monitor speaker output: Microphone input: Duty cycle: Power Supply: Current Drain: Operating temperature: 150MHz to 174MHz 12.5kHz / 25kHz 5MHz / 10MHz/ 12.8MHz 3 watts @ 8 ohm 6 mV RMS @200 ohm 100% +13.8VDC +/-10% (Negative Ground) 2A Max with 5 Watt TX output power 750mA Max with TX OFF -30°C to +60°C 2.5.3.
2.5.4 Connectors 2.5.4.1 Antenna Connector Receiver: Exciter: Type N 50ohm Female Mounted on the module rear panel SMA 50ohm Female Mounted on the module rear panel 2.5.4.2 Power & I/O Connector 25-pin “D” Male Mounted on the rear panel 2.5.4.3 Ethernet Connector LED Embedded RJ45 Mounted on the rear panel 2.5.4.4 E/M Line Connector RJ45 Mounted on the rear panel 2.5.4.5 RS232 & External Reference Connector 9-pin “D” Female mounted on the front panel 2.5.4.
2.6 PART LIST The part reference of 2.6.1 Processor (Master) board 2.6.2 Interface Main Board 2.6.3 TX module 2.6.
