RF Technology Eclipse Series Operation And Maintenance Manual
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- Page 1 Eclipse Ser ies RF Technology rfinfo@rftechnology.com.au September 2003 Revision 2 T800 Tr ansmitter Oper ation and Maintainance Manual This manual is produced by RF Technology Pty Ltd 10/8 Leighton Place, Hornsby NSW 2077 Australia Copyright © 1997, 1998, 2003 RF Technology...
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Page 2: Table Of Contents
Local Microphone Input CTCSS and Tone Filter Audio Signal Processing 5.10 PTT and DC Remote Control 5.11 Microprocessor Controller 5.12 Voltage Regulator Field Alignment Procedure Standard Test Conditions VCO Alignment TCXO Calibration Modulation Balance ___________________________________________________________________________ RF Technology T800 Page 2... - Page 3 7.4.18 External ALC Input 7.4.19 T/R Relay Driver 7.4.20 Channel Select Input/Output 7.4.21 DC Remote Keying 7.4.22 Programmable No-Tone Period 7.4.23 Firmware Timers 7.4.24 CTCSS Connectors 7.5.1 Antenna Connector 7.5.2 Power and I/O Connector 7.5.3 Test Connector ___________________________________________________________________________ RF Technology T800 Page 3...
- Page 4 CONTENTS CONTENTS Engineering Diagrams Block Diagram Circuit Diagram Component Overlay Diagram Parts List ___________________________________________________________________________ RF Technology T800 Page 4...
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Page 5: Operating Instructions
1 OPERATING INSTRUCTIONS 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... -
Page 6: Alarm Led
1.1.8 TEST MIC. The TEST MIC. DIN socket is provided for use with a standard mobile or handset 200 Ohm dynamic microphone. The external audio inputs are disabled when the TEST MIC’S PTT is ___________________________________________________________________________ RF Technology T800 Page 6... -
Page 7: Transmitter Internal J Umper Options
2.4 J P5: 600 ¿ Ter mination Normally the Line Input is terminated in 600 ¿ . The 600 ohm termination can be removed by choosing the alternate position. Condition Position 600¿ Termination 1-2* No Termination ___________________________________________________________________________ RF Technology T800 Page 7... -
Page 8: Jp6: Input Level Attenuation
J P16: Dir ect Digital Input (Rev 4 or Higher ) Some trunking controllers have digital encoding schemes which operate to very low frequencies. The elliptical filter, used as a 250Hz low pass filter in the tone section, can ___________________________________________________________________________ RF Technology T800 Page 8... -
Page 9: Jp17: Bypass Low Pass Filter (Rev 4 Or Higher)
When a DMTX board is connected to an exciter, there is provision for digital or audio modulation of the reference osciallator and the VCO. The digital signal is input via the DB9 rear connector and the audio input signal is via the Line inputs on the standard DB25 rear panel connector. ___________________________________________________________________________ RF Technology T800 Page 9... -
Page 10: Pin Connector
>10kΩ, AC coupled (1-250Hz) High-Z Audio Input >10kΩ, AC coupled (10Hz-3kHz) External ALC input <0.5V/1mA to obtain >30dB attenuation, O/C for maximum power Table 3: Pin connections and explanations for the main 25-pin, D connector. ___________________________________________________________________________ RF Technology T800 Page 10... -
Page 11: Rear Panel Connectors
The spade connectors (2.1x0.6x7mm) are captive/soldered at the labelled points. Fig 1 Fig 2 RX PCB TX PCB The Receiver and Transmitter modules plug into the back plane DB25/F connectors To configure: Solder wire connections between appropriate points. ___________________________________________________________________________ RF Technology T800 Page 11... -
Page 12: Channel And Tone Frequency Programming
BCD 80 Channel and Tone Fr equency Pr ogr amming Channel and tone frequency programming is most easily accomplished with RF Technology TecHelp software or the Service Monitor 2000 software. This software can be run on an IBM compatible PC and provides a number of additional useful facilities. DOS and 32-bit versions are available. -
Page 13: Circuit Description
PLL synthesiser IC U6. This IC is a single chip synthesiser which includes a 1.1 GHz pre- scaler, programmable divider, reference divider and phase/frequency detector. The frequency data for U6 is supplied via a serial data link by the microcontroller. ___________________________________________________________________________ RF Technology T800 Page 13... -
Page 14: Power Amplifier
The bridge configuration allows audio signal inversion by interchanging the positive and negative inputs and minimizes ground loop problems. Both inputs should be connected, with one lead going to the source output pin and the other connected to the source audio ground. ___________________________________________________________________________ RF Technology T800 Page 14... -
Page 15: Local Microphone Input
The audio signal is further amplified 100 times by U7d. U7d also provides the symmetrical clipping required to limit the maximum deviation. The output level from U7d is adjusted by RV1, the deviation adjustment, before being combined with the tone audio signal in the summing amplifier U7a. ___________________________________________________________________________ RF Technology T800 Page 15... -
Page 16: Ptt And Dc Remote Control
The processor U13 includes non-volatile EE memory for channel frequencies, tones, and other information. It also has an asynchronous serial port, a synchronous serial port and an eight bit analogue to digital converter. ___________________________________________________________________________ RF Technology T800 Page 16... -
Page 17: Voltage Regulator
The procedures below do not constitute an exhaustive test or a complete alignment of the module, but if successfully carried out are adequate in most circumstances. ___________________________________________________________________________ RF Technology T800 Page 17... -
Page 18: Standard Test Conditions
4.5±0.25V, while the TX LED is ON and the ALARM LED is OFF. TCXO Calibr ation 1. Select a channel at the center frequency (half way between the highest and lowest frequencies for the model in question). 2. Disconnect the Audio input (no signal input). ___________________________________________________________________________ RF Technology T800 Page 18... -
Page 19: Modulation Balance
Adjust RV3 for the desired deviation in the range 0-1kHz. If sub-tone (CTCSS) coding is not to be used, adjust RV3 fully CCW. _________________________ The factory default is 500Hz for wide band (5kHz maximum deviation) and 250Hz for narrow band channels. ___________________________________________________________________________ RF Technology T800 Page 19... -
Page 20: Deviation
15W. This means no more than 10W at the end of a 1m length of test cable. This pessimistic procedure is safe on all models manufactured at the time of writing. ___________________________________________________________________________ RF Technology T800 Page 20... -
Page 21: Specifications
7.1.3 Channel Pr ogr amming The channel information is stored in non-volatile memory and can be programmed via the front panel test connector using a PC and RF Technology software. 7.1.4 Channel Selection Channel selection is by eight channel select lines. These are available through the rear panel connector. -
Page 22: Physical Configuration
Serial Data (RS-232) – Pins 2 / 3 + Ground (pin 1) Electr ical Specifications 7.4.1 Power Requir ements Operating Voltage - 10.5 to 16 Vdc with output power reduced below 12 Vdc Current Drain - 5A Maximum, typically 0.25A Standby Polarity - Negative Ground ___________________________________________________________________________ RF Technology T800 Page 22... -
Page 23: Frequency Range And Channel Spacing
Less than 20ms. Certain models have RF envelope attack and decay times controlled in the range 200µs< t <2ms according to regulatory requirements. 7.4.11 Modulation Type - Two point direct FM with optional pre-emphasis Frequency Response - ±1 dB of the selected characteristic from 300 - 3000 Hz ___________________________________________________________________________ RF Technology T800 Page 23... -
Page 24: Distortion
7.4.20 Channel Select Input / Output Coding - 8 lines, BCD coded 00 - 99 Logic Input Levels - Low for <1.5V, High for >3.5V Internal 10K pull down resistors select channel 00 when all inputs are O/C. ___________________________________________________________________________ RF Technology T800 Page 24... -
Page 25: Dc Remote Keying
Tone frequencies are given in table 4. Connector s 7.5.1 Antenna Connector Type N Female Mounted on the module rear panel _______________________ The reverse phase burst is usually sufficient to eliminate squelch tail noise in higher-quality mobiles ___________________________________________________________________________ RF Technology T800 Page 25... - Page 26 136.5 141.3 146.2 151.4 156.7 159.8 162.2 165.5 167.9 171.3 173.8 177.3 179.9 183.5 186.2 189.9 192.8 196.6 199.5 203.5 206.5 210.7 218.1 225.7 229.1 Table 4: Tone Squelch Frequencies 233.6 241.8 250.3 254.1 ___________________________________________________________________________ RF Technology T800 Page 26...
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Page 27: Power And I/O Connector
7 SPECIFICATIONS 7.5.2 Power & I/O Connector 7.5.2 Power & I/O Connector 25-pin “D” Male Mounted on the rear panel 7.5.3 Test Connector 9-pin “D” Female mounted on the front panel ___________________________________________________________________________ RF Technology T800 Page 27... - Page 28 Eclipse Series RF Technology rfinfo@rftechnology.com.au February 2005 Revision 2 R800 Receiver Operation and Maintainance Manual This Manual is produced by RF Technology Pty Ltd 10/8 Leighton Place, Hornsby NSW 2077 Australia Copyright © 2003 RF Technology...
- Page 29 Microprocessor Controller 5.10 Carrier Operated Switch 5.11 Voltage Regulator 5.12 Tuning Voltage Supply Alignment Procedure Standard Input Signal RF Alignment IF Alignment Line Level Adjustment Reference Oscillator Calibration Specifications General Description 7.1.1 Channel Capacity ___________________________________________________________________________ RF Technology R800 Page 2...
- Page 30 7.4.17 Audio Output Level 7.4.18 Audio Distortion 7.4.19 Channel Select Input/Output 7.4.20 Carrier Operated Switch Output 7.4.21 CTCSS 7.4.22 External Squelch Input Connectors 7.5.1 Antenna Connector 7.5.2 Power & I/O Connector 7.5.3 Test Connector Parts List ___________________________________________________________________________ RF Technology R800 Page 3...
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Page 31: Operating Instructions
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... -
Page 32: Line
Indication Cadence Fault Condition Flashing 5 times, pause Synthesizer unlocked Flashing 4 times, pause Tuning voltage outside limits Flashing 3 times, pause Signal level below preset threshold (for fixed links) ___________________________________________________________________________ RF Technology R800 Page 5... -
Page 33: Receiver Internal Jumper Options
2.5 JP6 COS Polarity Condition Position Active on Signal 1-2* Active on No Signal 2.6 JP7, JP8, JP9 - dc Loop COS Configuration (JP4 1-2) Condition Source +12 Vdc Loop 2-3* Free Switch Output ___________________________________________________________________________ RF Technology R800 Page 6... -
Page 34: Jp7, Jp8, Jp9 Direct Output Cos (Jp4 2-3)
2 RECEIVER INTERNAL JUMPER OPTIONS 2.7 JP7, JP8, JP9 Direct Output COS (JP4 2-3) Condition +12 Vdc Direct Output Free Switch Output 2.8 JP11 EPROM Type Condition Position 27C256 2-3* 27C64 *= Standard Ex-Factory Configuration ___________________________________________________________________________ RF Technology R800 Page 7... -
Page 35: Receiver I/O Connections
Table 3: Pin connections and explanations for the main, 25-pin D-shell Connector 4 Frequency Programming Channel and tone frequency programming is most easily accomplished with RF Technology TecHelp/ Service Monitor 2000 Software. This software can be run on any IBM compatible PC and provides a number of additional useful facilities. -
Page 36: Circuit Description
5.1 RF Section 5 CIRCUIT DESCRIPTION TecHelp/ Service Monitor 2000 can be supplied by your dealer, distributor or by contacting RF Technology direct. 5 Circuit Description The following description should be read as an aid to understanding the block and schematic diagrams at the rear of this manual. -
Page 37: Vco Section
JP2. JP2 switches the feedback networks of amplifier U27c to achieve the desired response. After de-emphasis and filtering, the audio signal is applied to the inputs of two analog switches (U17a,b). These switches are controlled by the microcontroller and squelch or mute ___________________________________________________________________________ RF Technology R800 Page 10... -
Page 38: Noise Filter, Amplifier And Detector
This facility can be used to mute the audio during transmission, as is required in single frequency systems, by simply connecting pin 8 of the receiver to the transmitter T/R relay driver output (pin 16 on Eclipse transmitters). ___________________________________________________________________________ RF Technology R800 Page 11... -
Page 39: Microprocessor Controller
+18Vdc. 6 Alignment Procedure The following procedures may be used to align the receiver for optimum performance. Normally alignment should only be necessary after repairs on that part of the circuit. ___________________________________________________________________________ RF Technology R800 Page 12... -
Page 40: Standard Input Signal
Volts on test socket Generator level to centre frequency pin 7 to pin 1 read 2-3Vdc channel to J1. Modulation off. As above As above FL1,FL2,FL3 for maximum reading. Reduce generator output to keep below 3Vdc. ___________________________________________________________________________ RF Technology R800 Page 13... -
Page 41: If Alignment
6.5 Reference Oscillator Calibration Step Input Measure Calibration None required Frequency Junction of R69 X01 for L.O. +/- and R26 on the top of the 100Hz PCB. (L.O. input to the L.O. =Fc+45MHz mixer) ___________________________________________________________________________ RF Technology R800 Page 14... -
Page 42: Specifications
RF and tone frequency combination. 7.1.3 Channel Programming The channelling information is stored in a non-volatile memory chip and can be programmed via the front panel test connector using a PC and RF Technology supplied TecHelp/ Service Monitor 2000 software. 7.1.4 Channel Selection Channel selection is by eight channel select lines. -
Page 43: Physical Configuration
Tuning Voltage - 9 + Gnd (pin 1) Serial data (RS232) - 2/3 + Gnd (pin 1) 7.4 Electrical Specifications 7.4.1 Power Requirements Operating Voltage - 10.5 to 16Vdc Current Drain - 500mA Max Polarity - Negative Ground ___________________________________________________________________________ RF Technology R800 Page 16... -
Page 44: Frequency Range And Channel Spacing
0.25uV (-119dBm) for 12dB SINAD 0.35uV (-116dBm) for 20dB Quieting 7.4.8 Selectivity 25KHz spacing - 80dB per EIA-603 12.5KHz spacing - 70dB per EIA-603 7.4.9 Spurious and Image Rejection 90dB 7.4.10 Intermodulation 80dB per RS204C ___________________________________________________________________________ RF Technology R800 Page 17... -
Page 45: Modulation Acceptance Bw
750uSec. de-emphasis with the high pass and notch filters bypassed. Sub Audio Output: +1/-3dB 67-250Hz 7.4.15.2 Audio Output Level 600 Ohm Line: Adjustable -10 to +10dBm Monitor Loudspeaker: 5watts with external speaker. 0.3watt with internal speaker. ___________________________________________________________________________ RF Technology R800 Page 18... -
Page 46: Audio Distortion
Connection to Remote Switch via 600? Line: Internal connections are provided so that the opto-coupler can be connected to the 600? line for use over a single pair. Current Source/Sink, Collector Voltage: Ic = 10mA Maximum Vc = 30Volts Maximum. ___________________________________________________________________________ RF Technology R800 Page 19... -
Page 47: Ctcss
Type N Female Mounted on the module rear panel 7.5.2 Power & I/O Connector 25 pin “D” Male Mounted on the rear panel 7.5.3 Test Connector 9 pin “D” Female mounted on the front panel. ___________________________________________________________________________ RF Technology R800 Page 20...