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Related Manuals for RF Technology Eclipse R70
Summary of Contents for RF Technology Eclipse R70
- Page 1 Eclipse Series RF Technology rfinfo@rftechnology.com.au May, 2005 R70/R71 and R150 Receiver Operation and Maintenance Manual This manual is produced by RF Technology Pty Ltd., 10/8 Leighton Place, Hornsby, 2077, Australia Copyright © 1997 RF Technology...
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Page 2: Table Of Contents
Noise Filter, Amplifier and Detector Subtone Filter and CTCSS External Squelch Microprocessor Controller 5.10 Carrier Operated Switch 5.11 Voltage Regulator Alignment Procedure Standard Input Signal RF Alignment IF Alignment Line Level Adjustment Reference Oscillator Calibration Page 2 RF Technology R350/R500... - Page 3 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 and I/O Connector 7.5.3 Test Connector Parts List RF Technology R70/R71 and R150 Page 3...
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Page 4: Operating Instructions
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 local authorities. Technology equipment is subject to continual... -
Page 5: C.sq
PWR LED The PWR LED shows that the dc supply is connected to the receiver. 1.1.7 SQ LED The SQ LED comes on when the audio to the line and direct outputs is un-squelched. RF Technology R70/R71 and R150 Page 5... -
Page 6: Alarm Led
In the following subsections an asterisk (*) signifies the standard (Ex-Factory) configuration of a jumper. JP1: 240 Hz Notch Filter JP1 allows the 240Hz notch filter in the normal audio path to be bypassed. Condition Position Notch Filter In 1-2 * Notch Filter Out Page 6 RF Technology R350/R500... -
Page 7: Jp2: Audio Response
Refer to setting of JP4, in section 2.4. They control the levels and connection into the audio balanced line circuitry. Condition Source +12 Vdc Loop 1-2 * Free Switch Output RF Technology R70/R71 and R150 Page 7... -
Page 8: Jp7, Jp8, Jp9: Direct Output Cos
JP19: LED Alarm o/p (pcb 30/9132/0002 or later) The LED alarm can be brought out to DB-25 pin 7 for ATI Condition Position No Alarm Output 1-2 * Alarm LED connect to DB-25 pin 7 Page 8 RF Technology R350/R500... -
Page 9: Jp19: Led Alarm Output (Pcb 30/9132/0002 Or Later)
BCD 8 BCD 10 Channel select 10’s digit BCD 10 BCD 20 Channel select 10’s digit BCD 20 BCD 40 Channel select 10’s digit BCD 40 BCD 80 Channel select 10’s digit BCD 80 RF Technology R70/R71 and R150 Page 9... -
Page 10: Receiver I/O Connections
Opto-coupled Transistor Switch Carrier Operated Sw COS [-] (10mA 30V max) External Squelch Input <1 Vdc to Squelch >2 Vdc or open ckt to unsquelch Table 3: Pin connections and explanations for the main, 25-pin, D-shell Connector Page 10 RF Technology R350/R500... -
Page 11: Channel And Tone Frequency Programming
IF Section The first IF amplifier uses two parallel connected JFET transistors Q2 and Q3 to obtain 8-10 dB gain. The two transistors provide improved dynamic range and input matching over a single transistor. RF Technology R70/R71 and R150 Page 11... -
Page 12: Vco Section
1 ppm. The 12.8 MHz output of Q25 or XO1 is amplified by Q8 to drive the reference input of the PLL synthesizer IC U4. This IC is a single chip synthesizer which includes a Page 12 RF Technology R350/R500... -
Page 13: Audio Signal Processing
The discriminator audio is fed through cascaded low pass filters U28a and U28b to filter out the voice frequency components. The filtered sub-tone audio is supplied to the CTCSS hybrid and the rear panel RF Technology R70/R71 and R150 Page 13... -
Page 14: External Squelch
The generic term ``Carrier Operated Switch'' may be misleading in this case. SINCE, if a sub-audible tone has been programmed for the channel in use, the COS is controlled by carrier and tone detection. Page 14 RF Technology R350/R500... -
Page 15: Voltage Regulator
3.0KHz peak for 25KHz channel spacing. RF Alignment Alignment Frequency 66-84 MHz range 76.000 MHz 70-88 MHz range 80.000 MHz 136-156 MHz range 146.000 MHz 148-168 MHz range 158.000 MHz 154-174 MHz range 164.000 MHz RF Technology R70/R71 and R150 Page 15... -
Page 16: If Alignment
SINAD on test socket Reduce generator pin 6 to pin 1 level to obtain 12 Db approx. 25µV SINAD. Carefully adjust L5, L6, L7, L8 to obtain the best SINAD. Reduce generator output to maintain 12 dB SINAD Page 16 RF Technology R350/R500... -
Page 17: Line Level Adjustment
7.1.3 Channel Programming The channel 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. RF Technology R70/R71 and R150 Page 17... -
Page 18: Channel Selection
Line Output Level - screwdriver adjust multiturn pot Noise Squelch Setting - screwdriver adjust multiturn pot Carrier Squelch Setting - screwdriver adjust multiturn pot 7.3.2 Indicators Power ON - Green LED Squelch Open - Yellow LED Fault Indicator - Flashing Red LED Page 18 RF Technology R350/R500... -
Page 19: Test Points
Frequency Stability +/- 5 ppm, 0 to +60 C, Standard for 25 KHz +/- 1 ppm, 0 to +60 C, Standard for 12.5 KHz, Optional for 25 KHz 7.4.5 Nominal Antenna Impedance 50Ω RF Technology R70/R71 and R150 Page 19... -
Page 20: If Frequencies
6 - 18 dB SINAD, 12.5 KHz versions Attack Time: 20 mSec. above 20dB Quieting Release Time: 150 mSec. at 20dB Quieting decreasing to 20ms above 2µV preset threshold Hysteresis: Hysteresis is equal to approximately 2dB change in noise quieting Page 20 RF Technology R350/R500... -
Page 21: Carrier Level Squelch
Nominally equal to 1 volt peak at rated system deviation 7.4.18 Audio Distortion 750µs De-Emphasis: Less than 3% at 1 KHz and 60% of rated system deviation Flat Response: Less than 5% at 1 KHz and 60% of rated system deviation RF Technology R70/R71 and R150 Page 21... -
Page 22: Channel Select Input/Output
Vc = 30 Volts 15 V Maximum 7.4.21 CTCSS The CTCSS decoding is provided by a hybrid module. This provides programmable decoding of all 38 EIA and 12 other common tones. Refer to table 4. Page 22 RF Technology R350/R500... - Page 23 141.3 146.2 151.4 156.7 159.8 162.2 165.5 167.9 171.3 173.8 177.3 179.9 183.5 186.2 189.9 192.8 196.6 199.5 203.5 206.5 210.7 218.1 225.7 229.1 233.6 241.8 250.3 254.1 Table 4: Tone Squelch Frequencies RF Technology R70/R71 and R150 Page 23...
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Page 24: External Squelch Input
Antenna Connector 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 Page 24 RF Technology R350/R500...