BenutzerhandbuchInhaltsverzeichnisDSP Exciter With Wideband Option1USER MANUAL1PN 9110.00172 (old part number = 916-T70A-003)1REV I1RELEASED1Document Change Record2Issue: 12Date: 05/09/952Issue: Rev B2Date: 02/07/962Issue: Rev C2Date: 02/29/962Issue: Rev D2Date: 4/25/962Issue: Rev E2Date: 5/14/962Issue: Rev F2Date: 5/23/962Issue: Rev G2Date: 9/03/962Issue: Rev H2Date: 9/20/962Issue: Rev I2Date: 01/15/972Table of Contents3List of Figures7List of Tables91 GENERAL111.1 Manual Scope111.1.1 Applicable Documents111.2 Manual Sections11Table 1-1 Manual Contents 111.3 Exciter Identification11v0250.hgl12Figure 1-1 DSP Exciter Isometric View122 SPECIFICATIONS13Table 2-1 Exciter Specifications (continued)133 DESCRIPTION153.1 Introduction153.2 Physical Description15Table 3-1 Part Numbers of VCO/RF Amplifier Boards ...15Table 3-2 Part Numbers of Interface Boards16Table 3-3 Part Numbers of Interface I/O Boards16Table 3-4 Assembly and Control Board Numbers173.3 Simplified Block-Diagram Description17v0343.hgl18Figure 3-1 DSP Exciter Rear View18v0344.hgl19Figure 3-2 DSP Exciter Top View with Internal Cont...19v0251.hgl20Figure 3-3 DSP Exciter Simplified Functional Diagr...204 INSTALLATION AND SETUP214.1 Precautions and Hazards214.2 Test Equipment and Tools Required21Table 4-1 Test Equipment Required 214.3 Component and Adjustment Locations214.4 Installation214.4.1 Inspection214.4.2 Power Requirement224.4.3 Input/Output Connections224.4.4 Signal Functions22Table 4-2 DSP Exciter I/O Connectors 22Table 4-3 VT100 Interface Connector J3 Pin Assignm...23Table 4-4 Control Board Connector J6 Pin Assignmen...234.4.5 Switches and Jumpers23Table 4-5 Exciter Control Board Jumper Positions244.5 Setup244.6 Ultimate Disposition24v0164.hgl25Figure 4-1 DSP Exciter/PA Control Circuit Boards I...255 OPERATION275.1 Front-Panel Controls and Indicators275.2 Operating Instructions27v0079.hgl28Figure 5-1 Front-Panel Controls and Indicators286 THEORY OF OPERATION296.1 Exciter/PA Control296.1.1 Reference Source296.1.2 Main Circuit Frequencies29Table 6-1 Exciter RF/Main Circuit Frequencies296.1.3 Controller Interface Connector Functions29v0123.hgl30Figure 6-1 DSP Exciter RF Stage Functional Diagram...306.2 Interface to Controller316.2.1 General316.2.2 Interface Conversion Functions316.2.2.1 Analog-Mode A/D Conversion316.2.2.2 FSK-Data-Bit Strapping316.2.2.3 Channel-Select-Bit Strapping326.2.2.4 Mode-Select-Bit Strapping326.2.2.5 Power Sample D/A Conversion326.3 DSP Modulator326.3.1 General326.3.2 DSP Modulator Signal Flow326.3.2.1 Digital Signal Modulator336.3.2.2 Digital Quadrature Modulator336.3.2.3 Digital-to-Analog Converter33v0083.hgl734Figure 6-2 DSP Exciter MCU Circuit Functional Diag...346.3.2.4 Read-Only Memory356.4 IF Stage356.4.1 Mixer-1356.4.2 Filter356.4.3 VCO-1356.4.4 Synthesizer-1356.5 MCU366.5.1 Microcontroller Unit (MCU)366.5.2 Digital-to-Analog (D/A) Converter376.5.3 8/16-Bit Converter376.5.4 Read-Only Memory37v0345l738Figure 6-3 DSP Exciter-to-Controller Functional Di...38v0345R.hgl39Figure6-3 DSP Exciter-to-Controller Functional Di...39v0081.hgll40Figure 6-4 DSP Exciter Detailed Functional Diagram...40v0077.hglr41Figure 6-5 DSP Exciter IF-Stage Detailed Functiona...416.5.5 VSWR-Fault Detector426.5.6 Alarm Data-to-Logic Conversion426.6 RF Assemblies426.6.1 RF Stage Location426.6.2 RF Assemblies426.6.2.1 RF Stage Description426.6.2.2 RF Stage Bands426.6.2.3 RF Stage Signal Flow436.6.2.3.1 Mixer-2436.6.2.3.2 Filter436.6.2.3.3 Amplifier436.6.2.3.4 VCO-2436.6.2.3.5 Synthesizer-2446.7 Voltage Regulator Circuit447 MAINTENANCE457.1 Location of Maintenance Procedures457.2 Test Equipment Required457.3 VCO-2 Adjustment Procedure457.3.1 VCO-2 Multichannel Adjustment Procedure451. Set up VT-100 VDT and select local control (see...452. Select transmitter channel of lowest frequency ...453. Use tuning tool supplied to adjust VCO ADJ cont...454. Return transmitter to service.457.3.2 VCO-2 Single-Channel Adjustment Procedure451. Set up VT-100 VDT and select local control (see...452. Select transmitter channel of operating frequen...453. Use tuning tool supplied to adjust VCO ADJ cont...454. Return transmitter to service.457.4 Over-The-Link Downloading467.5 On-The-Fly Channel/Mode Changing467.5.1 Programming Example47Table 7-1 Deviation and Offset Programming477.5.1.1 Release 2.10 DSP Exciter487.6 16-Channel Operation487.7 On-The-Fly Interface49Figure 7-1 On-The-Fly C2000 Control Lines to DSP E...498 CHECKOUT AND TROUBLESHOOTING518.1 CHECKOUT518.2 TROUBLESHOOTING519 REMOVAL AND REINSTALLATION539.1 Exciter/PA Control Chassis539.1.1 Removal Procedure531. Support exciter while removing the four screws ...532. Remove exciter from cabinet far enough to acces...533. Disconnect connector J3 from connector P3 that ...534. If a controller interface I/O panel is mounted ...535. Tag all connectors attached to the exciter back...536. Remove all connectors attached to the exciter b...537. Remove exciter.538. Tag wires connected to terminal board TB1 on P3...539. Disconnect tagged wires from terminal board TB1...539.1.2 Reinstallation Procedure531. Before installing exciter, connect wires on P3 ...542. Connect connectors on transmitter to exciter ba...543. If controller requires interface I/O panel, ins...544. Connect connector J3 to connector P3 that is pi...545. Locate connector P3 that is pigtailed off of te...546. Slide exciter into cabinet and secure with four...549.2 Exciter Cover549.2.1 Removal Procedure541. Remove two sem screws from sides of exciter cov...542. Raise front of cover and extract back of cover ...543. Remove exciter cover.549.2.2 Reinstallation Procedure541. Insert exciter cover into channel on exciter ba...542. Lower cover so that fingerstock is behind excit...543. While pressing down slightly on exciter cover: ...54v0151.hgl55Figure 9-1 DSP Exciter Chassis Removal and Reinsta...55v0171.hgl56Figure 9-2 DSP Exciter Cover Removal and Reinstall...569.3 Exciter/Control Board579.3.1 Removal Procedure571. Remove controller interface board (see Table Pa...572. Remove VCO/RF amplifier board (see Table Paragr...573. Remove three kep nuts and three screws from reg...574. Remove shoulder washer from regulator U58.575. Remove two jam nuts and two lock washers from c...576. Remove two jack socket screws attached to conne...577. Remove four sem screws from back panel and remo...578. Remove insulator between back panel and regulat...579. Remove two jack socket screws attached to conne...5710. Remove two studded standoffs through exciter/c...5711. Remove nine sem screws that attach exciter/con...579.3.2 Reinstallation Procedure571. Position exciter/control board onto exciter cha...572. Install two studded standoffs through exciter/c...573. Apply Vibra Tite or similar nonpermanent self-l...574. Install two jack socket screws into connector J...575. Apply thermal compound as follows: between regu...576. Install insulator between regulator U58 and bac...577. Position back panel on exciter chassis and secu...588. Apply Vibra Tite or similar nonpermanent self-l...589. Install two jack socket screws into connector J...5810. Install two lock washers and two jam nuts over...5811. Install shoulder washer into regulator U58.5812. Install three kep nuts and three screws throug...5813. Install VCO/RF amplifier board (see Table Para...5814. Install controller interface board (see Table ...58v0170.hgl59Figure 9-3 DSP Exciter Control Board Removal and R...599.4 Interface Board609.4.1 Removal Procedure601. Remove jack socket screws (2 or 6) securing con...602. Remove two sem screws securing interface board ...603. Grasp interface board at the center of connecto...604. Remove interface board.609.4.2 Reinstallation Procedure601. Position interface board into place by insertin...602. Carefully align connector P1 on interface board...603. Secure interface board to standoffs with two se...604. Apply Vibra Tite or similar nonpermanent self-l...605. Screw the six jack socket screws through holes ...609.5 VCO/RF Amplifier Board609.5.1 Removal Procedure611. Remove jam nut and lock washer from connector J...612. Remove five sem screws securing VCO/RF amplifie...613. Grasp VCO/RF amplifier board near connector P4....614. Remove VCO/RF amplifier board.619.5.2 Reinstallation Procedure611. Before installing VCO/RF amplifier board, verif...612. Position VCO/RF amplifier board into place by i...613. Carefully align connectors P4/P9/P10 on VCO/RF ...614. Secure VCO/RF amplifier board to standoffs on e...615. Install lockwasher and jam nut to connector J3 ...61v0341.hgl62Figure 9-4 DSP Exciter External Interface I/O Boar...62v0342.hgl63Figure 9-5 DSP Exciter Interface Board Removal and...6310 OPTIONS6510.1 Exciter/PA Control with QT-1000 Interface6510.1.1 Reference Source6510.1.2 Controller Interface Connector Functions6510.1.3 QT-1000 Interface Conversion Functions6510.1.3.1 Analog-Mode A/D Conversion6610.1.3.2 FSK-Data-Bit Strapping6610.1.3.3 Channel-Select-Bit Strapping6610.1.3.4 Mode-Select-Bit Strapping6610.1.3.5 Power Sample D/A Conversion66Table 10-1 Interface Board Connector J4 (QT-1000)67Table 10-2 Receiver Connector J5 Pin Functions (QT...68Table 10-3 Remote Select Input vs. Channel (QT-100...68Table 10-4 Remote Select Input vs. Mode (QT-1000)...6810.2 Exciter/PA Control with Standard Interface6910.2.1 Reference Source6910.2.2 Controller Interface Connector Functions6910.2.3 Standard Interface Conversion Functions6910.2.3.1 Analog-Mode A/D Conversion6910.2.3.2 FSK-Data-Bit Strapping7010.2.3.3 Channel-Select-Bit Strapping7010.2.3.4 Mode-Select-Bit Strapping7010.2.3.5 Power Sample D/A Conversion70Table 10-5 Interface Board Connector J4 (Standard)...71Table 10-6 Remote Select Input vs. Channel (standa...71Table 10-7 Remote Select Input vs. Mode (standard)...7210.3 Exciter/PA Control with I20 Interface7210.3.1 Reference Source7210.3.2 Controller Interface Connector Functions7210.3.3 I20 Interface Conversion Functions7310.3.3.1 Analog-Mode A/D Conversion7310.3.3.2 FSK-Data-Bit Strapping7310.3.3.3 Channel-Select-Bit Strapping7310.3.3.4 Mode-Select-Bit Strapping7310.3.3.5 Power Sample D/A Conversion73Table 10-8 Interface Board Connector J174Table 10-9 Interface Board Connector J275Table 10-10 Remote Select Input vs. Channel (I20)...75Table 10-11 Remote Select Input vs. Mode (I20)75Größe: 940 KBSeiten: 76Language: EnglishHandbuch öffnen
