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Japan Radio Co. JRV-500B Maintenance Manual

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MAINTENANCE MANUAL
FOR
JRV-500B
VHF TRANSCEIVER
Approved
Checked
Designed
j
Drawing No.
DC15-JRV-500B

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  • Page 1 MAINTENANCE MANUAL JRV-500B VHF TRANSCEIVER Approved Checked Designed Drawing No. DC15-JRV-500B...
  • Page 2 Precautions to be taken in Operation Do not proceed to the operation of equipment before thoroughly reading the operation manual. This equipment requires the licenses to operate a radio station and to be engaged in radio operations. You need obtain both radio station and radio operator licenses to operate the equipment.

  • Page 3: Table Of Contents

    CONTENTS page Outline 1 – 1 Components 2 – 1 Standard components 2 – 1 Optional components 2 – 1 Specification 3 – 1 General······················································································ 3 – 1 Transmitter Section ··································································· 3 – 2 Receiver Section ······································································· 3 – 2 Installation 4 –...
  • Page 4 Remote control ·······································································6 – 1 Outline of remote control·························································6 – 1 Serial control method ······························································6 – 1 6.2.1 Transmission specification······················································6 – 2 6.2.2 Transmission format (memory channel mode)························6 – 2 6.2.3 Transmission format (direct channel mode)····························6 – 5 Maintenance & Trouble shooting·············································· 7 – 1 Standard Voltage ······································································...
  • Page 5 Power Amplifier ············································ 10 – 29 CMD-745 Operation panel············································ 10 – 30 CNM-162BA MODEM ······················································· 10 – 31 Parts List ······································································ 11 – 1 JRV-500B VHF Transceiver··········································· 11 – 1 CDE-885 Control ·························································· 11 – 3 CMA-705 RX Circuit ····················································· 11 – 14 CMB-257 TX Circuit······················································...

  • Page 6: Outline

    Outline The JRV-500B VHF TRANSCEIVER (after called JRV-500B) is shore basis communication equipment for maritime communication system in 150MHz RR band, is designed to satisfy the ITU radio regulation (RR). It attends the simplex and duplex communications under operating conditions with 24H-hours operation.
  • Page 7 Designation of Model The model is designated as follows: Example: JRV-500BPMSF-1 Type of power supply (Refer to Note.) : 12VDC : 24VDC : 48VDC Blank : 85 - 132V AC/170 - 264V AC Built-in filter : With built-in filter Blank : Without built-in filter Duplex type / Simplex type : Simplex type...

  • Page 8: Components

    Components Standard Components The standard components are as follows: Components Model Q'ty Remarks VHF TRANSCEIVER JRV-500B Accessories JRV-500-ACC1 Fuse, hand microphone connecters included Instruction manual Operation manual in English Maintenance manual in English Factory inspection data in English Optional Components...
  • Page 9 Components Model Remarks Coaxial cable WF-H50-7 WF-H50-4 20D-2E Spare parts JRV-500B-SP Spare parts for maintenance Spare PC module -1 CONTROL CDE-885 -2 OPERATION PANEL CMD-745 -3 RX CIRCUIT CMA-705 -4 TX CIRCUIT CMB-257 -5 POWER AMPLIFIER CAH-559 Measurement Equipment and Available upon order.

  • Page 10: General

    Specifications 3.1 General Frequency range Transmission : 156.025-156.875MHz(simplex) 160.625-162.025MHz (duplex) Reception : 156.025-157.425MHz Memory channels : Up to 8 channels (Memory - channel mode) Communication system : Simplex press-to-talk Duplex press-to-talk Class of emission : G3E (F3E, with 6dB octave pre- emphasis) Antenna impedance : Nominal 50Ω...

  • Page 11: Transmitter Section

    10) Power Supply : 85-132V AC/170-264V AC, 50/60Hz or 13.6V DC ±10% The 100V or 200V AC power supply can be selected with a change over switch. 24V DC ± 20% or 48V DC ± 20% can be selected. In this case, however, only DC power supply can be used.

  • Page 12: Receiver Section

    3.3 Receiver Section Method of reception : Double super heterodyne Oscillation : PLL frequency synthesizer Sensitivity : -3dBu e.m.f. or less under the 12dB EIA SINAD method (Refer to Note 2.) 0dBu or less under the 20dB noise quieting method (Refer to Note 2.) Squelch sensitivity : -5.0dBu e.m.f.

  • Page 13: Installation

    Installation Installation location When determining a location for the unit, please take the following criteria into consideration: ・ Avoid a place that is exposed to direct sunlight or susceptible to overheating. ・ Avoid humid or dusty place. ・ Do not place containers holding water or other liquids above or on top of the unit.

  • Page 14: Cable Connection

    Cable Connection Some connectors to connect external are available to the unit in the next table. Select the connectors by a presence of the external devices. Item Connector Part Remarks name J101 HS21R-2 Minus input power Plus input J102 HS16R-3 AC power input or Plus input in 24V DC ,48V DC type power...
  • Page 15 Item Connector Part Remarks name Rx ant J104 SC-1612 Rx antenna select 1 filter -STA Rx antenna select 2 select Rx antenna select 3 Rx antenna select 4 Rx antenna select 5 Rx antenna select 6 Rx antenna select 7 Rx antenna select 8 Ground +13.6V...
  • Page 16 Item Connector Part Remarks Name Remote J106 S-1660A Memory ch3 response control -STA Memory ch4 response Memory ch5 response Memory ch6 response Memory ch7 response Memory ch8 response Ground No connection Local response Receive response PTT response Alarm response Power on response Ground No connection PTT control (remote)
  • Page 17 Item Connector Part Remarks Name Remote J106 S-1660A AF output control -STA Ground No connection Line input 200bps:voice & cont 1200bps:control Line output 200bps:voice & cont 1200bps:control Ext input 200bps:N.C. 1200bps:voice Ext output 200bps:N.C. 1200bps:voice Ground No connection Record J108 P-2240U Record output for tape recorder...

  • Page 18: Applicable Connector

    Applicable Connector Connectors that show in following table match to JRV-500 ,and are recommended. Connector Connector Applicable Applicable Remarks name connector cable J101 HS21R-2 HS21P-2 VCTF2x 50/0.18 power J102 HS16R-3 HS16P-3 VCTF2x 50/0.18 power J103 FM214-8S FM-14-8P for mic J104 SC-1612 P-1612BA, SWVP-0.5...
  • Page 19 Connector Connector Applicable Applicable Remarks Name connector cable J106 S-1660A P-1660BA, SWVP-0.5 Remote -STA P-1660A -60C control -CA (20) PW-1660BA, P-1660A -CA (20) J108 P-2240-P PJ-2240-P HC2L1 or Record out HC2L2 J109 LGR4517 PJ-055B MVVS-20/ Phones 0.18-6.5P- RX ANT N-P-5 5D-2V 5D-2E N-P-8...

  • Page 20: Installation Antenna System

    Installation antenna system The following diagrams show general arrangement for installation of antenna system. 4.5.1 Installation of JRV-500 with 1 antenna. A N TE N N A B R C -1511 C O A XIAL C O NN E CT O R N-P-8 8D -2V N-P-8...

  • Page 21: Installation Of Jrv-500 With 2 Antennas

    4.5.2 Installation of JRV-500 with 2 antennas. When installing the antennas, it is ideal to arrange the two elements of antenna on the same perpendicular line with a spacing of at least 5 meters provided between them (Fig.2). If it becomes unavoidable to install the two antenna elements at the positions aslant to each other, determine the vertical and horizontal distances H and D shown in Fig.3.
  • Page 22 ANT No.1 Limits if H and D which allow transmitter unit to exert no interference to receiver unit. Example: Both the transmitter and receiver units operable when expressed by mark o in the graph are ANT No.2 9 and 3 meters respectively. H(m) When H and D become 5 and 6 meters respectively as expressed by...

  • Page 23: Initial Settings

    DC power supply automatically starts to operate the unit continuously. (Standard type only) 5.2. Setting Internal data It is necessary that the internal data is set before using JRV-500B. The procedure for setting is described as follows. 5.2.1. Setting mode Confirm the power switch is off.

  • Page 24: For Internal Data

    5.2.2. Page 1 for internal data The following data settings are in this page 1. Setting for memory channel data in memory channel mode. Setting for the configuration data. Setting for memory channel mode or direct channel mode. Setting for private channel data. Setting for Rx antenna filter control data.

  • Page 25: Setting For Memory Channel Data

    5.2.4.1. Setting for memory channel data in memory channel mode In this section, the method for setting the memory channel data is described bellow, when the JRV-500B is set in memory channel mode. After operating in Paragraph 5.2.1. as page 1, operate as follows:...

  • Page 26: Setting For The Configuration Data

    5.2.4.2. Setting for the configuration data In this section, the internal configuration data is set as same as actual configuration of the radio. After operating in Paragraph 5.2.1. as page 1, operate as follows: Operation Display remarks tr, t or tr entering the setting for the configuration data Present data is displayed on the LED.

  • Page 27: Setting For Memory Channel Mode

    5.2.4.3. Setting for memory channel mode or direct channel mode In this section, the memory channel mode or direct channel mode is selected After operating in Paragraph 5.2.1. as page 1, operate as follows: Operation Display remarks 0 or 1 Present data is displayed on the LED.

  • Page 28: Setting The Private Channel Data

    5.2.4.4. Setting the private channel data In this section, the private channel data is able to set. After operating in Paragraph 5.2.1. as page 1, operate as follows: Operation Display remarks Entering the setting for memory channel number data (Ch30 is set as private channel number for example.
  • Page 29 Separator for receiving frequency data to next data select the duplex or simplex operation 0: Duplex operation 1: Simplex operation save and exit this setting (for saving data to EEPROM) exit this setting ＊ (for not saving data to EEPROM) turn off the S2(dip sw)-4 on CDE-885 press the S1 on CDE-885 5 - 7...

  • Page 30: Setting For Rx Antenna Filter Control Data

    5.2.4.5. Setting for Rx antenna filter control data In this section, establishing a connection between international VHF channel number and Rx antenna filter line number After operating in Paragraph 5.2.1. as page 1, operate as follows: Operation Display remarks Entering the setting for memory channel number data (Ch16 is set as channel number for example.)

  • Page 31: Setting For Remote Or Local Mode As Default Data

    5.2.4.6. Setting for remote or local mode as default data Even when the power is turned off, memory remembers mode in which the unit has been operating. When power is turned on next time, the unit is started up in local or remote mode according to the contents of memory. However, if power is left turned off for a long time, or if the unit is operated for the first time, memory backup will not function properly.

  • Page 32: Setting For Full-Duplex Or Semi-Duplex In Duplex Channel

    5.2.4.7. Setting for full-duplex or semi-duplex in duplex channel Selecting the duplex operating mode or semi-duplex operating mode. After operating in Paragraph 5.2.1. as page 1, operate as follows: Operation Display remarks Entering the setting for duplex operating mode or semi-duplex operating mode. The existing mode will be displayed on LED.

  • Page 33: Setting For Full-Remote Or Semi Remote In Remote Mode

    Selecting the full-remote or semi remote in remote mode. In the semi-remote, the channel selection and power reduce selection operation can be done from operation panel of JRV-500B. After operating in Paragraph 5.2.1. as page 1, operate as follows: Operation...

  • Page 34: Testing The Serial Control Line

    5.2.4.9. Testing the serial control line Outputting the data ‘H’,’L’ or signal which duty cycle is 50 % with no modem operation. Outputting the data ‘3320Hz’ as H data,’3150Hz’ as ‘L’ data, signal which duty cycle is 50 % or no control data with modem operation. After operating in Paragraph 5.2.1.

  • Page 35: Restoring The Each Data To Default

    5.2.4.10. Restoring the each data to default Restoring the each data to default. After operating in Paragraph 5.2.1. as page 1, operate as follows: Operation Display remarks Restoring the each data to default Restoring default data and exit this setting (for restoring default data to EEPROM) exit this setting ＊...

  • Page 36: Other Functions

    5.2.6 Other functions S2-1 Shot scan (3 second each) Long scan (10 second each) S2-2 Disable local test mode Enable local test mode S2-5 No wait (Power ON) 10 second wait (Power ON) S2-6 Un repetitive reverse transmit Repetitive reverse transmit collating check collating check S2-7...
  • Page 37 6. Remote control 6.1 Outline of remote control The VHF Controller can operate a VHF transceiver (or transmitter/receiver) installed at a distant place by remote control via a cable under the 3.4 kHz width voice specification and a multiplex radio link. Control signals are outputted to the connectors J106 (for further details, Refer to Section 4.4, "Cable connection") who are mounted on the rear panel.

  • Page 38: Transmission Specification

    6.2.1 Transmission specification The transmission specification of the serial control method is as follows: - Transmission line specification : EIA RS-422 (When a transducer is used RS-232C is also available.) - Transmission rate : 1200 baud (No voice signals are superimposed.) 200 baud (Voice signals are superimposed.) - Voice signal bandwidth For a transmission...
  • Page 39 2) Second byte Table 6-3 Second byte Higher bits Lower bits Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 OVER UNLK UNLK HEAT POWER The bits have the following meanings. Bit 7 : 0: This bit indicates the second byte. Bit 6 : 1: This bit indicates the second byte.
  • Page 40 4) Fourth byte (ITU and Private channel) Table 6-6 Fourth byte Higher bits Lower bits Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 The bits have the following meanings. Bit 7 : 1: This bit indicates the fourth byte. Bit 6 : 1: This bit indicates the fourth byte Bit 5 : Channel number data (higher bit 2) Bit 4 : Channel number data (higher bit 1)

  • Page 41: Transmission Format (Direct Channel Mode)

    6.2.3 Transmission format (direct channel mode) Details of a 4-byte control or a 4-byte monitor item are as follows: 1) First byte Table 6-8 First byte Higher bits Lower bits Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0...
  • Page 42 2) Second byte Table 6-10 Second byte Higher bits Lower bits Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 POWER POWER The bits have the following meanings. Bit 7 : 0: This bit indicates the second byte. Bit 6 : 1: This bit indicates the second byte.
  • Page 43 4) Fourth byte (ITU and Private channel) Table 6-12 Fourth byte Higher bits Lower bits Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 The bits have the following meanings. Bit 7 : 1: This bit indicates the fourth byte. Bit 6 : 1: This bit indicates the fourth byte Bit 5 : Channel number data (higher bit 2) Bit 4 : Channel number data (higher bit 1)
  • Page 44 Maintenance & Trouble shooting Standard Voltage Standard voltages of the each PC board are in following table. a) Control (CDE-885) Terminal Standard Remarks voltage [V] IC42-16 8±0.5 Power supply for analog circuit 4±0.4 Reference analog circuit 13.5±2 Power supply (transmitting) circuit IC11-28 5±0.5...
  • Page 45 Standard Signal Level and Adjustment CONTROL (CDE-885) Item Turning Check Value Measurement Remarks control terminal equipment Mic gain IC41 1pin 0.7Vp-p Oscilloscope With 1kHz 3mVp-p signal at mic terminal Remote audio IC41 1pin 0.7Vp-p Oscilloscope With 1kHz -10dBm signal at signal input level Remote AF input RX AF input level...
  • Page 46 TX CIRCUIT (CMB-257) Item Tuning Check Value Measurement Remarks control terminal equipment Transmitting level J602 26dBm Power meter Transmit POWER AMPLIFIER (CAH-559) Item Tuning Check Value Measurement Remarks control terminal equipment Alarm level TX ANT Dummy load Tune the RV3 fully clockwise. Transmit.
  • Page 47 Trouble shooting Make the next flow chart a hint because of a solution of a problem. I n d i c a t i o n a b n o r m a l t h e p i l o t l a m p t u r n e d o n ? Y e s...
  • Page 48 C a n n o t r e c e i v e A r e t h e c o n t r o l f u n c t i o n s ( c h a n n e l i n d i c a t i o n &...
  • Page 49 C a n n o t t r a n s m i t e t h e ' T R A N S M I T ' l a m p t u r n e d o n ? Y e s A r e t h e c o n t r o l f u n c t i o n s ( c h a n n e l...

  • Page 50: Pll Circuit (Cmb-257)

    Circuit Description Transmitter Section 8.1.1 PLL Circuit (CMB-257) The unit obtains the required frequency using the PLL type frequency synthesizer. In short, the self-excited oscillator using L and C is controlled using a stable crystal oscillator frequency to generate an equivalent stable self-excited oscillator frequency.

  • Page 51: Output Control Circuit (Cah-559)

    8.1.4 Output Control Circuit (CAH-559) The unit employs a circuit that controls fluctuations of power to keep the transmitting output constant. It also has the function to prevent the transmitting output from exceeding the ratings. For this purpose, a positive voltage detected by CD3 is divided into certain voltages by RV1 and RV2, and applied to the negative input pin of IC1.

  • Page 52: Pll Circuit (Cmb-257)

    Receiver Section 8.2.1 PLL Circuit (CMA-705) The PLL circuit for reception has the same construction as that for transmission. The low-pass filter consisting of CR suppresses relatively high undesirable noise components of the DC control voltage for frequency control, which is supplied by the PLL circuit. 8.2.2 IF Circuit (CMA-705) FL1 consists of two crystal filters whose center frequency is 21.4MHz.

  • Page 53: Audio Amplifier Circuit

    8.3 Operation Panel (CMD-745) CD1 through CD3 are 7 segment type LED indicators. The control signals from the CPU are held in IC5 to IC8, and IC1 to IC4 drive the LED's. CD8 and CD5 are send/receive indicators. SW1 through SW12 are numeric switches.
  • Page 54 program written to ROM (IC11). The microprocessor (IC1) outputs chip select data using the address bus. IC2, IC6, IC7 or IC8 designates memory IC and ports for the chip select data. The designated IC supplies data to the microprocessor or any external device according to the request made by the microprocessor.

  • Page 55: Modem (Cnm-162Ba)

    8.5 MODEM (CNM-162BA) The MODEM is used to transmit or receive control or monitor signals of the VHF Transceiver to or from VHF Controller at a distant place. For the MODEM, a transmission rate of 200 or 1200 baud can be selected.

  • Page 56: Mechanical Drawing

    Mechanical drawing JRV-500BP VHF Transceiver 9 – 2 JRV-500BD VHF Transceiver 9 – 5 9 - 1...

  • Page 57: Vhf Transceiver

    10. Electrical drawing JRV-500BP VHF Transceiver Block diagram··························· 10 – 2 JRV-500BPM VHF Transceiver Block diagram··························· 10 – 3 JRV-500BPF VHF Transceiver Block diagram··························· 10 – 4 JRV-500BPS VHF Transceiver Block diagram··························· 10 – 5 JRV-500BPMF VHF Transceiver Block diagram··························· 10 – 6 JRV-500BPMS VHF Transceiver Block diagram···························...
  • Page 58 11. Parts List JRV-500B VHF Transceiver 11 – 2 CDE-885 Control 11 – 4 CMA-705 RX Circuit 11 – 15 CMB-257 TX Circuit 11 – 21 CAH-559 Power Amplifier 11 – 25 CMD-745 Operation panel 11 – 29 CNM-162BA MODEM 11 –...

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