Harris_RF-590_user.pdf

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1、 SUPPLEMENT NUMBER: SU-10073-0017A TO PUBLICATION NUMBER: 10073-0020A JUL Y 1983 RF COMMUNICATIONS I D!fJ Dr:;L.L CJ 0- 1 al I: : : : : : : : : : I 0rJ o Do Do fo I CJ D D D DfO1 .-,( D CJ ;50 CJ1_0. 0 01 DD D DO (!) D I: : : : .: : : : I o I 00 00 CJ CJ D SUPPLEMENT NUMBER: SU-10073-0017A TO PUBLIC

2、ATION NUMBER: 10073-0020A JUL Y 1983 Copyright 1983 By Harris Corporation All Rights Reserved I f 1 I HARRIS CORPORATION RF COMMUNICATIONS DIVISION 1680 University Avenue Rochester, New York 14610 U.S.A. Tel.: 716-244-5830 Cable: RFCOM; Rochester, N.Y. TELEX: 978464 .I) HARRIS RF COMMUNICATIONS TABL

3、E OF CONTENTS Paragraph 1 1 3 3 3 3 4 4 4 5 5 5 5 6 6 7 8 8 10 10 1 2 3 3. 3. 3. 3. 3. 3. 3. 4 4. 4. 4. 4. 4. 4. 4. 5 6 LIST OF FIGURES Figure Remote Control Assembly A17 Functional Block Diagram Remote Control Assembly A17 Component Location Diagram (10073-6200) Remote Control Assembly A17 Schemati

4、c Diagram (10073-6201) 12 13 1 2 LIST OF TABLES TablePage 1 5 6 6 8 9 10 1 2 3 4 5 6 7 LCU Assembly A 17 Interface Summary. IdentificationNumberSetup. BaudRateSetup Jumper Selection of Interface. : US Answer and US Originate Frequencies. TestPointlndications Remote Control Assembly A 17 Parts List (

5、P L 10073-6200) 1 2 3 4 5 6 7 1 1.1 1.2 1.3 1.4 2 3 .f J !0 f cG w g . w t:o m - 1-./ Q 0: . I - w m z . . a. 0 9 = .- oz 8 r H I 8 :; Q A Q 0; N -= I - z t . = = wW .z ; T J 2 - y ; E 2, ! N : u N : ;: -: E ca . ca Q t.) o ca (0 c o . t.) c u. , .- :c E Q) :t: O . . c o u Q) . o E Q) a: m HARRIS RF

6、 COMMUNICATIONS m HARRIS RF COMMUNICATIONS 1.GENERAL DESCRIPTION Remote Control Assembly ( LCU) A 17 provides facilities necessary to permit control of the RF-590 Receiver from a remote site. Connected to the microprocessor controlling the RF-590, this assembly con- tains interface buffering to Cont

7、rol Board A 14, additional program memory, and circuits for parallel 1/0, serial 1/0 controls, and modem. It functions as a local control unit ( LCU) for the receiver providing RS- 232C, MIL-STD-188C, RS-422, and FSK interface options to a distant remote control unit (RCU). The software programming

8、using one 4K byte EPROM interfaces the A 17 control and communication functions to the main control software on the A 14 assembly. Electrical connection to the receiver from A 17 is through ribbon cables to the control board and to interface connectors J8 and Jg on the RF-590 rear panel. 2.INTERFACE

9、 CONNECTIONS LCU Assembly A 17 interface connections are summarized in table 1 Table 1. LCU Assembly A 17 Interface Summary ToFromConnectorFunction A17J1-1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 -17 -18 19 -20 A 1 4J 1 5- 1 A 14J15-2 A 15J 15-3 A 14J 1 5-5 A 14J 15-6 A 14J 15- 7 A 14J15

10、-8 A 14J 15-9 A14J15-10 A 14J 1 5- 1 2 A 14J 1 5- 1 4 A 14J 1 5-16 A 14J 15-17 A 14J 1 5- 1 8 A 14J 1 5- 19 A14J15-20 - A 14J 15-4 +8.5V +8.5V Reset Out HOLD Line Audio HLDA Line Audio Gnd CPU Clk. Out +15V Gnd Ready -15V R5T 5.5 IO/M INTR 51 - A 14J 1 5-11 A 14J 15-13 A 1 4J 15- 1 5 WR RD INTA ALE

11、1 m HARRIS RF COMMUNICATIONS Table 1. LCU Assembly A 17 Interface Summary (Cant.) From ToFunction Connector N/C N/C ADO N/C AD1 A15 AD2 A14 AD3 A13 AD4 A12 AD5 A11 AD6 A1O AD7 A9 Gnd AB A17J2-1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 -17 -18 -19 -20 - Bidirec Bidirec Bidirec Bidirec Bidi

12、rec Bidirec Bidirec Bidirec A 14J15-23 A 14J 15-25 A 14J 15-26 A14J15-27 A 14J15-28 A 14J15-29 A 14J 15-30 A 14J15-31 A 14J15-32 A 14J15-33 A 1 4J 1 5-34 A 14J15-35 A 14J 15-36 A 14J15-37 A 14J15-38 A 14J 15-39 A 14J 1 5-40 J9-21 J9-20 A17J3-1 -2 -3 -4 -5 6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 -17 -

13、18 -19 -20 - J9-3 J9-4 - J9-6 - J9-37 J9-19 J8-1 J8-2 - J8-15 J8-3 J8-16 J8-1 7 J8-5 J8-1 8 J8-6 - J8-4 Bus Available RS-422 IN - Bus Request N/C RS-422 OUT + N/C RS-422 IN+ RS-422 OUT - Gnd Shield (Gnd) N/C RS-232 TX ID3 RS-232 RX ID2 RSK Data OUT - ID5 FSK Data IN + ID6 IDO 2 m HARRIS RF COMMUNICA

14、TIONS LCU Assembly A 17 Interface Summary (Cont.JTable 1 From To Fu nction Connector J8-19 J8-7 A 17J3-21 -22 -23 -24 -25 -26 -27 -28 -29 -30 Gnd RS-232 Sig. Gnd N/C 101 N/C 104 BR3 BR1 BRO BR2 - J8-8 J8-9 J8-22 J8-1 O J8-23 J8-11 FUNCTIONAL DESCRIPTION3. Control and Data Transfer3.1 When installed

15、in the RF-590, the A 17 assembly appears as an electrical extension of the address/data bus of the microprocessor on the A 14 assembly. This bus is buffered by tri-state bidirectional buffer U5 and high-order address and control inputs buffered by U 1. Selection of IC devices on the LCU for data tra

16、nsfer to/from the CPU is done using three-to-eight decoder U3 with high-order address bits. Interface signals RD, iiR, and 51 from the A 14 assembly determine the direction of data flow after addresses have been loaded into latch U6 by ALE, the address latch enable. The information stored in the EPR

17、OM is part of the system software and is not customer alterable. Serial Data Transmission/Reception3.2 Upon power up reset, the controlling CPU (A14U1 ) detects the presence of the LCU option, and initializes aIlIC devices on A17. Using the software in the LCU EPROM, the CPU conditions the USART U8

18、to re- ceive incoming signals according to user-selected options. When response to a distant RCU is required by this RF-590 LCU, the transmit interface is enabled, and appropriate parallel data sent via address/data bus ADO-AD7 from the CPU is converted to serial data by USART U8. Completed receptio

19、n/transmission of message characters by U8 is signaled to the CPU by interrupt line RST 5.5, generated by U8 and U14. The BRCLK input to the USART is from the 5.0688 MHz crystal oscillator circuit using Y2. 3.3Serial Interfaces The A 17 assembly provides all standard data communication interfaces ea

20、ch is individually jumper selectable). For RS-232C/MI L-STD-188C interfaces, 1488 drivers in U15 and 1489A receiver U21 are used. The RS-422 interface utilizes tri-state drivers of U 13 and receiver in U 18. 3 m HARRIS RF COMMUNICATIONS Parallel Data 1/0 Parallel data 1/0 is accomplished by input bu

21、ffers U 10 and U11 reading user-selected options from DIP switches 51 and 52. Outputs from latch ug select operating modes of modem U16 and the interface con- trol functions. Data transfer to/from these parallel 1/0 elements, as well as U5ART US, is managed by chip selects from U3 combined with appr

22、opriate RB and WR signals in U4. Modem 1/03.5 The TXD signal from USART U8 (2661) is presented in serial data format to the TXD input of universal low speed (0-600 bps) modem U16 (MC14412) for conversion to frequency shift keying (FSK) signals. The 1.0 MHz Y1 crystal is required to utilize the U16 o

23、n chip oscillator. The TXCND signal (transmit carrier), a digitally synthesized sine wave derived from the 1.0 MHz oscillator reference is applied to the filter input of transmit filter/line hybrid U19 ( 1262). With the MODE input from parallel data control ug (74LS374) set to 1 and the TYPE input f

24、rom switch S1 set to 1, the US standard originate frequencies are used. A MARK 1 is 1270 Hz while a SPACE 0 is 1070 Hz. The RX RATE input to U16 selects a receive data rate of 0-600 bits per second (bps). Transmit filter/line hybrid U 19 lowpass filters the oscillator output to attenuate those modu

25、lation com- ponents which would interfere with the adjacent channel. The CHAN SELECT signal input of U19 (1262), via part of dual op amp U22 allows the filter to pass the originate frequencies 1170 Hz :t 100 Hz when the CHAN SE LECT signal is -12V and the answer frequencies 2125 Hz :t 100 Hz when th

26、e CHAN SE LECT signal is +12V. U19 (1262) also contains an active line hybrid which couples the modem to the line. T1 provides a 600 ohm balanced audio output. LEVE L ADJ potentiometer R20 allows the operator to adjust the hybrid output level. The XMT FSK output signal is applied to the distant RCU

27、via rear panel connector J8. The RCV RSK input signal from the distant RCU via connector JS is passed through U19 (1262) to re- ceive filter U20 (1267) as the RCV FSK signal. Receive filter U20 (1267) attenuates signals outside the channel passband and also band limits noise energy from the line. Th

28、e CHAN SE LECT signal input to U20 (1267) allows the filter to pass the originate frequencies 1170 Hz :t 100 Hz when the CHAN SE LECT signal is -12V and the answer frequencies 2125 Hz +100 Hz when the CHAN SE LECT signal is +12V .U20 (1267) also contains a soft limiter amplifier which limits the RXC

29、ND signal to supply the demodulator in U16 (MC14412) with a square wave FSK signal. The RXCND signal is demodulated and routed to serial 1/0 (USART) US as the RXD signal via jumper A 17ES to A17E4. . BITE (Self- Test) When installed, the A 17 LCU hardware is tested along with all other R F-590 funct

30、ions during execution of the build-in-test (BITE) feature of the receiver. These tests are performed if the receiver is in Local or Remote operation. Specifically, three LCU tests are made: a test of USART U8 function, a checksum test to ensure correct EPROM function, and a test of parallel 1/0 and

31、RS-422 receivers. The corresponding BITE fault codes are: 4 m HARRIS RF COMMUNICATIONS Fault 01 -EPROM (U7) fault. Fault 02- Communications (USART US) fault. Fault 03- Interface (U9, U10, U17, U18) fault. Dc Distribution The A17 assembly receives three supply voltages from A14, each of which is conv

32、erted by local regulators to provide voltages needed by the LCU circuits. The +8.5 volt input is regulated by VR2 to yield the +5V logic supply. The +15V and -15V inputs are converted by regulators V R 1 and V R3 respectively to pro- vide +12V and -12V levels for the modem and serial interface. MAIN

33、TENANCE4. 4.1 Setup Identification Number For use in a remote control system consisting of many R F-590 or other compatible units, each LCU must be setup to have an individual unique identification number. This number, an eight-bit Binary code is set up on DIP switch S1 and allows 255 individual uni

34、t codes (1 to 255) according to table 2. Table 2. Identification Number Setup Switch Binary Weight 128 (highest order bit)51-1 51-264 51-332 S1-416 851-5 S1-64 251-7 51-8 1 (lowest order bit) 0 = switch closed 1 = switch open For example, leaving only 51-4 and 51-7 open and all other 51 switches clo

35、sed, forms the binary idenfifica- tion number 00010010 which is 16 + 2 = 18 (in decimal format). 5 m HARRIS RF COMMUNICATIONS Baud Rate Selection 4.1.2 The RF-590 LCU allows any of sixteen popular baud rates to be used in communication through the U5ART U8. The baud rate is selectable by setting swi

36、tches on DIP switch 52 according to table 3. Table 3. Baud Rate Setup S2-7 Baud Rate 52-352-4S2-1 50 75 110 134.5 c c c c c c a a c c c c c a c a 150 300 600 1200 a a a a c c a a c c c c c o c o 1800 2000 2400 3600 c c a a c a c a c c c c a a a a 4800 7200 9600 19200 c c o o c a c a a a a a a a a a

37、a = switch open C = switch closed Signaling I nterface Selection4.1.3 As mentioned before, the RF-590 LCU allows anyone of four common signaling interfaces to be used. Typically, the desired interface will be set at the factory. If another interface is needed, configure jumpers as shown in table 4.

38、Table 4. Jumper Selection of Interface 6 m HARRIS RF COMMUNICATIONS Table 4. Jumper Selection of Interface (Cont.) Jumper ConfigurationSe lected Interface E6-E4 Jumpered E5-E4 Open E7-E4 Open E8-E4 Open AS-232C Ax MI L-188C Interface MIL-188C TxE27-E11 Jumpered E15-E16 Jumpered E 14- E 16 Open E7-E4

39、 Jumpered E6-E4 Open E7-E4 Open E8-E4 Open MIL-188CRx RS-422 Interface E5-E4 Jumpered E6-E4 Open E7-E4 Open E8-E4 Open RS-422 Rx arid Tx Modem ( Refer to paragraph 4.1.4 ) Modem TxE27-E 12 Jumpered Modem RxE8-E4 Jumpered E5-E4 Open E6-E4 Open E7-E4 Open For normal operation, leave jumpers El-E2 open

40、. Modem Signalling Frequencies4.1.4 The FSK modem may be operated using the US Answer or US Originate frequencies from the R F-590 remote control option. Typically, the R F-590 remote option is configured for US Originate operation and the distant controller then must be set for US Answer frequencie

41、s. Frequency pair selection is accomplish- ed by the setup listed in table 5. Setup for FSK modem is listed in table 4. 7 m HARRIS RF COMMUNICATIONS us Answer and US Originate FrequenciesTable 5. Jumper Configuration R F-590 Option us Answer E21-E22 Jumpered E26-E22 Open E26-E24 Jumpered E24-E21 Ope

42、n us Originate E21-E22 Open E26-E22 Jumpered E26-E24 Open E24-E21 Jumpered 4.2Hybrid Level Adjustment The following adjustment is for the FSK modem output level, andhas been completed at the factory prior to shipment. In the event a board needs repair or realignment, the following procedure has been

43、 included. Connect an HP-3400A Analog Voltmeter, or equivalent, between pins 16 and 18 of connector J8 on the RF-590 rear panel. Connect an ac power cord on the R F-590 rear panel. b. Jumper A17E1 to A17E2. Set the voltmeter RANGE control to the 1 volt, O dBm position. d. Turn on the RF-590 power us

44、ing Power ON/OFF VOLUME control switch/potentio- meter located on the front panel. e. Adjust hybrid level adjustment A 17R20 for a meter reading of 1 volt, O dBm. f. Turn off power and disconnect test equipment. Remove E1-E2 jumper. g. 4.3 Troubleshooting There are six test points located on LCU Ass

45、embly A 17. Table 6 used together with the schematic diagram and component location drawing should help in locating most A 17 problems. 8 ;II HARRIS RF COMMUNICATIONS Table 6. Test Point Indications Data transfer to or from the microprocessor on Control Board A 14 takes place when a logic LOW is see

46、n at TP1. A simultaneous LOW at TP2 indicates the exchange is that of program steps from the EPROM con- taining software to manage the A 17 assembly. When installed in a properly functioning receiver, logic HI GH pulses should be seen once per millisecond at TP3, even if the RF-590 is not in remote

47、operation (with or without an attached, controlling unit). When a controlling unit is operating, its communication with the RF-590 will result in intermittent active high pulses on the interrupt line (TP4), again regardless of the local or remote operation of the receiver . Absence of activity on po

48、ints TP1- TP3 indicate a failure in the connection of A 17 assembly to Control Board Assembly A 14. If the Remote board is not properly installed, an operator pressing the REMOTE button on the RF-590 front panel will get no response. If activity is seen on TP1- TP3 and the receiver can be placed into remote operation (but no activity is seen