Codan 2110 series Repair Manual Download

Page: 106 / 164

Repair procedures, tests, and adjustments

Manpack Transceiver 2110 series Repair Guide

Figure 22: Defective two-tone RF envelope (typical underbias of PA)

Figure 23: Defective two-tone RF envelope (typical spurious-related problems)

Record your results and actions (see

page 109,

Test sheet for the 2110 series

Manpack Transceiver

Switch off PTT on the 0208.

Return to the Repair flowchart (see

Figure 29 on page 95

Summary of Contents for 2110 series

Page 1: ...ritten consent of Codan Limited Copyright 2010 Codan Limited CODAN NGT Easitalk CIB and CALM are registered trademarks of Codan Limited Other brand product and company names mentioned in this document are trademarks or registered trademarks of their respective holders Codan part number 15 04139 EN Issue 1 October 2010 The English version takes precedence over any translated versions ...

Page 2: ...8305 0411 asiatech support codan com au Codan UK Ltd Unit C4 Endeavour Place Coxbridge Business Park Farnham Surrey GU10 5EH UNITED KINGDOM Telephone 44 1252 717 272 Facsimile 44 1252 717 337 uktech support codan com au Codan US Inc 1 Fishers Road Pittsford NY 14534 USA Telephone 1 585 419 9970 Facsimile 1 585 419 9971 hfsupport codanusinc com ...

Page 3: ...rmation Ordering information Overview General 10 Connectors 11 Front panel 11 Back panel 16 Battery pack 18 Brief description General information 21 Transmit path 22 Front Panel PCB 22 Audio Control PCB 22 RF IF Synthesiser PCB 22 PA Filter PCB 22 Antenna Tuner PCB 22 Receive path 23 Antenna Tuner PCB 23 PA Filter PCB 23 RF IF Synthesiser PCB 23 Audio Control PCB 23 Front Panel PCB 23 Antenna tuni...

Page 4: ... diagnosis 55 General 55 Mechanical inspection 58 Operational tests 59 Receive tests 63 Transmit tests 68 Disassembling the transceiver 77 Adjustments 79 Adjusting frequency 79 Adjusting the PA 79 Re assembling the transceiver 83 Checking the battery charging process 86 Replacing battery cells 90 Replacing the fuse in the battery pack 91 Flowcharts 93 Test sheet for the 2110 series Manpack Transce...

Page 5: ...Table of contents Manpack Transceiver 2110 series Repair Guide iii Specifications General 127 Receiver 129 Transmitter 130 Antenna tuner 131 GPS connector 131 ...

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Page 7: ...na 53 Figure 17 Setup for RF sampler 53 Figure 18 Setup for 2110 54 Figure 19 Balance control on the 0208 57 Figure 20 Acceptable two tone RF envelope 73 Figure 21 Defective two tone RF envelope typical overbias of PA 73 Figure 22 Defective two tone RF envelope typical underbias of PA 74 Figure 23 Defective two tone RF envelope typical spurious related problems 74 Figure 24 Intermodulation measure...

Page 8: ...List of figures vi Manpack Transceiver 2110 series Repair Guide This page has been left blank intentionally ...

Page 9: ... points for the Audio Control PCB 08 06128 001 41 Table 11 Test points for the Antenna Tuner PCB 08 06063 001 45 Table 12 Test points for the Front Panel PCB 08 06129 001 49 Table 13 Test equipment 52 Table 14 Settings for test equipment 56 Table 15 Default settings for the transceiver during testing 60 Table 16 20 25 W output power scale 71 Table 17 4 5 W output power scale 72 Table 18 Typical ch...

Page 10: ...List of tables viii Manpack Transceiver 2110 series Repair Guide This page has been left blank intentionally ...

Page 11: ...rcuit reference designations 123 clarifier 130 connectors 11 battery pack battery 18 external GPS antenna 13 transceiver unit 19 way GPIO 14 5 way 15 battery 17 handset 12 contact information 5 control and switching 24 cooling 128 D description functional PCB 27 desensitisation 129 Disassembly flowchart 97 discharge regime battery 89 disposal 2 distortion A F 130 Distortion test 73 using an oscill...

Page 12: ... output power 130 overview 9 10 127 P PA adjusting 79 driver bias 80 high output power 81 low output power 82 PA bias 80 PCB layout Antenna Tuner 32 Audio Control 32 Front Panel 32 PA Filter 30 RF IF Synthesiser 30 pin connections 11 battery pack battery connector 18 external GPS antenna connector 13 transceiver unit 19 way GPIO connector 14 5 way connector 15 battery connector 17 handset connecto...

Page 13: ...est equipment 52 operational 59 examining the profile 60 Handset 62 Power On 59 setting up equipment for 56 receive 63 AGC 65 Antenna Tuner 63 Audio Output 65 Basic Receive 63 Noise Limiter 67 Selectivity 66 Sensitivity 64 sheet 109 transmit 68 ALC 70 Antenna Tuner 69 Basic Transmit 68 Distortion 73 Frequency 69 Intermodulation 75 Low Power 72 RF Output Power 71 setting up equipment for 57 transce...

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Page 15: ...uide contains the following sections Contact information provides details of how to access up to date contact information from Codan s website Ordering information explains the details required by Codan to ensure prompt service and delivery Overview general description of the 2110 series Manpack Transceiver Brief description brief technical description of the 2110 series Manpack Transceiver includ...

Page 16: ...ement philosophy To facilitate rapid and cost effective servicing and to effectively manage the increasing sophistication of electronic assemblies a strategy of board replacement applies to all 2110 series Manpack Transceivers As part of this strategy all boards are designed and tested so that any individual board can be replaced while maintaining factory specifications of the entire unit If funct...

Page 17: ...uipment is properly earthed through its power connection or by earthing it to the workbench or anti static mat Soldering Excessive heat from soldering may lift tracks from the circuit boards and cause serious damage Avoid the use of high powered soldering irons A soldering iron rated at a maximum of 60 W preferably temperature controlled at approximately 370 C is sufficient for most tasks A solder...

Page 18: ...lead should be wound around the body of the probe so that the earth clip can be earthed to the ground plane as close as possible to the point of measurement This reduces stray RF pick up It is not advisable to connect two probes at the same time particularly when one is earthed to the PA ground plane and the other is earthed to the exciter This may cause earth loop problems Probes should be connec...

Page 19: ...dan com au Click on at the top of the page Outside of normal office hours Codan has Customer Service Engineers on call to provide emergency technical assistance They will either answer your call immediately or return your call as soon as possible If you are connected to a voice mail system when you call please follow the instructions carefully that is leave your name and contact phone number inclu...

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Page 21: ...part number e g 08 06039 module description e g Antenna Tuner PCB This ensures that the correct items are supplied and speeds up delivery times NOTE The ordering information for some boards requires an extension to the Codan part number for example 101 or 201 Please refer to the listed spares drawings for this correct extension see page 25 Interconnection diagrams and listed spares drawings ...

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Page 23: ...Manpack Transceiver 2110 series Repair Guide 9 Overview This section contains the following topics General 10 Connectors 11 ...

Page 24: ...2110 series Manpack Transceiver typically consists of a transceiver unit a battery pack a handset Figure 1 The 2110 series Manpack Transceiver HANDSET WHIP AND LONG WIRE ANTENNAS BROADBAND AND DIPOLE ANTENNAS RS232 GPIO AND INTERFACE ADAPTOR TRANSCEIVER UNIT BATTERY PACK ...

Page 25: ...tenna connectors are grounded using the earth terminal NOTE The 2110v Manpack Transceiver uses a 5 way connector in the place of the 19 way GPIO connector NOTE The GPS connector is optional for the 2110 Manpack Transceiver see page 115 Options earth terminal 19 way GPIO connector handset connector antenna stud 50 Ω connector VIEW 0 1 QZ TUNE 2ABC CLAR MODE DEF 3 Rx FREE 4GHI 5JKL Tx PWR 6 7PRS 8TU...

Page 26: ...ont view of the handset connector Table 1 Pinouts of the handset connector Pin no Function Input output Signal level A Ground 0 V B Earphone Output 10 V p p maximum 600 C PTT Input Active low for PTT D Microphone switched Input 15 mV p p ALC threshold E Power Output 12 V nominal F Not used A B C D E F ...

Page 27: ... GPS signals It automatically detects signals and sends these to the internal GPS receiver for processing Figure 4 Front view of the external GPS antenna connector 2110 only For specifications of this connector see Table 25 on page 131 Table 2 Pinouts of the external GPS antenna connector 2110 only Connection Function Centre pin Active GPS antenna Sleeve GPS antenna ground ...

Page 28: ...Morse Input Active low E RS232 Tx data Output RS232 F RS232 Rx data Input G PTT Input Active low H Power and signal ground 0 V DC J Speaker audio bridging Output 1 W into 4 K Protected switched supply from battery Output 12 V DC nominal 10 to 15 V DC range 1 A maximum L Speaker audio paired with J Output 1 W into 4 M Power in for charging battery Input 15 5 V DC approx 1 A maximum current limiting...

Page 29: ...iet Input Active low Table 4 Pinouts of the 5 way connector 2110v only Pin no Function Input output Signal level A Power in for charging battery Input 15 5 V DC approx 1 A maximum current limiting B RS232 Tx data for programming Output RS232 C Morse Input Active low D Ground 0 V E RS232 Rx data for programming Input RS232 Table 3 Pinouts of the 19 way GPIO connector 2110 only cont Pin no Function ...

Page 30: ...Overview 16 Manpack Transceiver 2110 series Repair Guide Back panel Figure 7 Back panel of the transceiver unit ...

Page 31: ... transceiver unit Table 5 Pinouts of the battery connector on the transceiver unit Pin no Function Input output Signal level A Ground 0 V DC B Charge out Output 15 5 V DC 1 A maximum current limiting C Battery Input 12 V DC nominal D SMB data Input output 3 3 V DC logic E SMB clock Input output 3 3 V DC logic F External PA ALC Input 0 to 5 V DC analogue A B C D E F ...

Page 32: ...re 10 Front view of the battery connector on the battery pack Table 6 Pinouts of the battery connector on the battery pack Pin no Function Input output Signal level A Ground 0 V DC B Charge in Input 15 5 V DC 3 A maximum current limiting C Battery Output 12 V DC nominal D SMB data Input output 3 3 V DC logic E SMB clock Input output 3 3 V DC logic F Spare A F E D C B ...

Page 33: ... 2110 series Repair Guide 19 Brief description This section contains the following topics General information 21 Transmit path 22 Receive path 23 Antenna tuning process 24 Synthesiser operation 24 Control and switching 24 ...

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Page 35: ... DR TP302 VC W DOG CLKIN TP105 FWD TP201 DISPLAY AGC Tx AF AUDIO AUDIO DATA TP101 ALC TP301 VCO TP106 107 TP303 Rx AUDIO DATA PLL REF J1 GP AUDIO OUT GP AUDIO IN MUTE DET PIC CLK TP304 FWD RWR AUDIO OUT A B A F OUT AUDIO IN EARPIECE LOCK REF PWR OUTPUT PHASE Rx IF OUT CODEC CLK ...

Page 36: ......

Page 37: ...conversion in both the Receive and Transmit modes The 455 kHz sideband filter the 45 MHz BPF the mixers MIX 1 and MIX 2 and the local oscillators VCO and REF OSC are common to both modes of operation NOTE The information in this section should be read in conjunction with the block diagram Codan part number 03 01256 ...

Page 38: ...xed with the reference oscillator to produce an IF signal centred on 45 MHz The transmit signal is filtered by a BPF with a bandwidth of 15 kHz before being passed to the input of the first mixer At the first mixer the signal mixes with the local oscillator VCO to produce the required channel frequency The signal is passed to the PA Filter PCB PA Filter PCB On the PA Filter PCB the signal passes t...

Page 39: ... IF signal centred on 455 kHz The output of the second mixer passes through a 2 5 kHz sideband filter so that only the wanted sideband is fed to the high gain AGC IF amplifier The amplified 455 kHz signal is demodulated to produce an audio signal and also to operate an AGC circuit This circuit controls the gain of the IF amplifier to prevent overloading when strong signals are received It also mai...

Page 40: ...ce oscillator at 14 848333 MHz is fed through a 44 5 MHz BPF to select the third harmonic to produce the 44 545 MHz second mixer LO The 14 848333 MHz frequency is also fed to two DDS ICs to produce a variable reference frequency for VCO with 10 Hz resolution The second DDS IC produces 456 5 kHz for USB and 453 5 kHz for LSB for the transmit modulator Tx MOD and receive demodulator Rx DEMOD circuit...

Page 41: ... Control PCB 08 06128 001 the listed spares drawing for this indicates that you should order 08 06128 101 Table 7 List of drawings Title Drawing number Interconnection Diagram 04 03515 2110 Unit with front handles Listed Spares 16 00116 sheet 1 16 00116 sheet 2 16 00116 sheet 3 16 00116 sheet 4 16 00116 sheet 5 16 00116 sheet 6 16 00116 sheet 7 2110 Unit with side handles Listed Spares 16 00120 sh...

Page 42: ...Interconnection diagrams and listed spares drawings 26 Manpack Transceiver 2110 series Repair Guide This page has been left blank intentionally ...

Page 43: ...04 03515 CODAN ...

Page 44: ...16 00116 sheet 1 ...

Page 45: ...16 00116 sheet 2 ...

Page 46: ...16 00116 sheet 3 ...

Page 47: ...16 00116 sheet 4 ...

Page 48: ...16 00116 sheet 5 ...

Page 49: ...16 00116 sheet 6 ...

Page 50: ...16 00116 sheet 7 ...

Page 51: ...16 00120 sheet 1 ...

Page 52: ...16 00120 sheet 2 ...

Page 53: ...16 00120 sheet 3 ...

Page 54: ...16 00120 sheet 4 ...

Page 55: ...16 00120 sheet 5 ...

Page 56: ...16 00120 sheet 6 ...

Page 57: ...16 00120 sheet 7 ...

Page 58: ......

Page 59: ... section contains the following topics RF IF Synthesiser PCB 33 PA Filter PCB 37 Audio Control PCB 40 Antenna Tuner PCB 44 Front Panel Assembly 46 Front Panel PCB 48 NOTE The functional description should be read in conjunction with the brief description see page 19 Brief description ...

Page 60: ...Functional description of PCBs 28 Manpack Transceiver 2110 series Repair Guide This page has been left blank intentionally ...

Page 61: ...Functional description of PCBs Manpack Transceiver 2110 series Repair Guide 29 This page has been left blank intentionally ...

Page 62: ... output level adjust PLL ref Trig TP301 VCO volts 28 V 10 V TP101 Tx exciter output TP102 TP103 TP104 TP105 TP106 TP107 Rx IF OUT Rx AUDIO Tx AF SDA INT SCL VCO TP303 3V5 RESET LOCK PROG AGC TP304 TP302 MIXER 1 VCO L123 L124 L125 L311 L312 J101 DR 12 VSW 5 VSW Tx_Rx ALC THERM PWR CTRL OP ALC REF PWR OUTPUT SCL INT SDA 3V3 RESET 5V5 A 10 V ADC VC FWDPWR SUM EXT ALC DR BIAS O P BIAS Balance adjust P...

Page 63: ...Functional description of PCBs Manpack Transceiver 2110 series Repair Guide 31 This page has been left blank intentionally ...

Page 64: ...R SCLK FS DX INT1 INT0 INT3 AUDIO_OUT_A AUDIO_OUT_B GP_AUDIO_IN INT2 PAGE2 PAGE1 PAGE0 AUDIO_IN AUDIO_IN DGND CODEC_CLK WDOG_CLKIN 53 54 97 X1 PIC_CLK RESET GP_AUDIO_OUT GP_AUDIO_IN R W DSP_CLK PAGE3 MUTE_ADJ A POWER_GOOD SHZ Mute adjust R163 5VA STROBE SCLK SCL MISO HOLD PHASE SDA BLANK REFL FWD 3V3 9 V INT DATA K23 K22 K21 K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12 K13 K14 K15 K16 K20 K19 K18 K17 EA...

Page 65: ...ification limits noise provides a REF OSC for the DDS PLL and LO2 circuits generates 45 25 to 75 MHz references for the 1st mixer via a VCO and PLL provides switchable RF pre amplification of the incoming Rx signal switches between USB and LSB provides the RF source for a tune signal provides AGC control interprets commands from the Audio Control PCB The RF IF Synthesiser PCB contains Tx mixers Rx...

Page 66: ...herefore maximum output power for taking the measurement NOTE All input signals for measuring Rx voltages are 10 dBm from the RF signal generator at 1 kHz from SCF Table 8 Test points for the RF IF Synthesiser PCB 08 06039 001 Test point Correct signal Explanation Source 10V 10 V DC 10 V regulated supply via Audio Control PCB 10VRX 10 V DC 10 V in Rx V401 V402 V403 10VTX 10 V DC 10 V in Tx V501 V5...

Page 67: ...amp on 420 mV p p Rx Output of the Rx RF Pre Amp V101 TP103 370 mV p p Tx 45000 5 kHz Between MIX 1 and 45 MHz filter TP104 1 V DC V106 V107 Bias TP105 1 V DC 45000 5 kHz V108 V113 Bias between 45 MHz filter and MIX 2 TP106 300 mV p p Tx 270 mV p p Rx 455 5 kHz Between MIX 2 and Noise Amp Gate TP107 1 2 V DC V118 and V119 Bias TP201 3 5 V DC 0 V DC Noise gate control from noise amp IC202 TP202 440...

Page 68: ...to 75 MHz in 10 Hz steps Output of the VCO V305 TP303 200 mV p p USB 456 5 kHz LSB 453 5 kHz Output of the divided REF OSC frequency to Tx modulator IC307 TP304 3 5 V p p 14 848333 MHz Output of the REF OSC REF OSC TRIG 3 5 V DC Tx AF 900 mV p p Tx Audio input to Tx DEMOD IC302 Audio Control PCB VCO 200 mV p p 45 25 to 75 MHz in 10 Hz steps Output of VCO to the PLL V303 VCO Table 8 Test points for...

Page 69: ...ed powers PA collector voltage battery voltage Tx Rx relay failures and thermal control of PA stage provides low pass filtering to reduce spurious emissions The PA Filter PCB contains a gain control circuit V25 V26 a pre driver circuit V29 to V32 the main power amplifier circuit V36 V37 a PIC IC1 a DC power relay K12 forward and reflected power detection D1 D2 an ALC circuit IC7 IC8 thermal contro...

Page 70: ...TE All input signals for measuring Rx voltages are 10 dBm from the RF signal generator at 1 kHz from SCF WARNING Ensure that the earth lead from the CRO probe is short when measuring at the TX_RX test point Table 9 Test points for the PA Filter PCB 08 06064 001 Test point Correct signal Explanation Source 10V 10 V DC Regulated supply V2 12VSW 12 V DC A rail PTT active V8 3V3 3 3 V DC Regulated sup...

Page 71: ...B SDA Data serial data for PIC IC104 master PIC Audio Control PCB SUM 4 2 V DC Tx ALC combined output power control IC8 THERM 0 V DC ALC thermal output power control prevents heatsink from exceeding 100 C IC8 TX_RX ensure that the earth lead from the CRO probe is short 120 mV p p Tx Input output for RF IF Synthesiser PCB VC 2 2 V DC ALC output PA collector voltage A rail after F1 F2 Table 9 Test p...

Page 72: ...s the unique transceiver profile programmed by NSP stores real time data such as transceiver addresses signal strength and other parameters for ALE regulates the battery voltage down to 5 V DC 3 3 V DC and 1 8 V DC connects to the optional voice encryptor module provides battery backed real time clock The Audio Control PCB contains a codec ADC IC302 a DSP IC202 a master PIC IC104 a CPLD IC301 an S...

Page 73: ...um ALC and therefore maximum output power for taking the measurement NOTE All input signals for measuring Rx voltages are 10 dBm from the RF signal generator at 1 kHz from SCF Table 10 Test points for the Audio Control PCB 08 06128 001 Test point Correct signal Explanation Source 53 Not used 54 Not used 97 Not used 10V 10 V DC 10 V regulated supply PA Filter PCB 1V8 1 8 V DC 1 8 V regulated supply...

Page 74: ...DIO_ OUT Rx audio for the GPIO connector after processing IC302 GP_AUDIO_ OUT INT0 Data IC202 INT1 Data IC202 INT2 Data IC202 INT3 Data IC202 MUTE_DET 3 3 V DC voice present 0 V DC no voice Indicates the state of the voice mute IC113 PAGE0 Data IC301 PAGE1 Data IC301 PAGE2 Data IC301 PAGE3 Data IC301 PIC_CLK 3 3 V p p 6 912 MHz Clock signal from CPLD to PIC IC301 POWER_ GOOD 3 3 V DC good 0 V DC b...

Page 75: ...uare wave Synchronous clock for PIC IC302 SDA Data serial data for PIC IC103 SHZ Data IC301 TX_AUDIO 1 V p p Tx audio Front Panel PCB WDOG_ CLKIN 3 3 V p p 14 Hz Clock signal from CPLD to CPLD IC301 X1 Not used Table 10 Test points for the Audio Control PCB 08 06128 001 cont Test point Correct signal Explanation Source ...

Page 76: ...ed spares drawing to select the correct assembly see page 25 Interconnection diagrams and listed spares drawings For details on the Antenna Tuner PCB Codan part number See 08 06063 001 Table 11 on page 45 and Figure 14 on page 32 CAUTION If this PCB is replaced ensure that IC5 has the same or later firmware version as the original NOTE All input signals for measuring Tx voltages are 10 dBv two ton...

Page 77: ...ial data for matching selector IC5 FWD Forward power for VSWR detector D24 A HOLD 3 3 V DC 3 3 V DC rail INT 3 3 V DC J1 100 V p p Tx RF input from PA J2 100 V p p Tx Output to 50 port MISO PHASE Phase detector output IC4 REFL Reflected power for VSWR detector D24 B RESET Reset for all matching relays IC5 SCL Synchronous clock for PIC IC104 master PIC Audio Control PCB SCLK Synchronous clock for m...

Page 78: ...ides audio output from the Front Panel PCB contains the connectors that direct the inputs and outputs from the GPIO and handset connectors to from the Front Panel PCB via a flexible ribbon cable contains the 50 RF connector which connects via a coaxial cable to the RF IF Synthesiser PCB contains the antenna stud which connects via a wire to the Antenna Tuner PCB contains the GPS antenna if fitted ...

Page 79: ... for this assembly When ordering a replacement PCB use the information in the listed spares drawing to select the correct assembly see page 25 Interconnection diagrams and listed spares drawings CAUTION If this PCB is replaced ensure that the replacement PCB has the same or later PCB version as the original that is 07 02032 vv ...

Page 80: ...uts directly to the Audio Control PCB The Front Panel PCB contains a UART to provide GPIO control IC6 an RS232 driver receiver IC11 an octal D type latch IC4 IC5 for switching speaker RS232 functions speaker on off etc audio amplifiers to drive the handset earphone IC8 internal speaker IC3 and an external speaker IC9 amplifiers to provide pre amplification of microphone IC1 and external audio in I...

Page 81: ...ximum output power for taking the measurement NOTE All input signals for measuring Rx voltages are 10 dBm from the RF signal generator at 1 kHz from SCF Table 12 Test points for the Front Panel PCB 08 06129 001 Test Point Correct Signal Explanation Source 1V65 1 65 V DC 1 65 V quiet for op amp bias IC1 3V3 3 3 V DC Regulated supply Audio Control PCB A 12 V DC Switched unregulated battery supply PA...

Page 82: ...Functional description of PCBs 50 Manpack Transceiver 2110 series Repair Guide This page has been left blank intentionally ...

Page 83: ...following topics Test equipment 52 Setup of test equipment for 2110 54 Repair procedures and fault diagnosis 55 Disassembling the transceiver 77 Adjustments 79 Re assembling the transceiver 83 Checking the battery charging process 86 Replacing battery cells 90 Test sheet for the 2110 series Manpack Transceiver 109 ...

Page 84: ... current meter 13 6 V 0 2 V at 20 A peak 20 A mA range Digital multimeter 10 M input impedance AC voltmeter 10 mV to 10 V with dB scale RF spectrum analyser optional Capable of measuring intermodulation 100 Hz resolution Artificial antenna assembly Four 220 pF 500 V capacitors connected in series 50 coaxial cable with leads and banana crocodile clips for connecting capacitors to antenna port 50 du...

Page 85: ...rsin 362 Driver hexagonal nut 13 mm Driver hexagonal nut 8 mm Driver hexagonal nut 5 mm Screwdriver hexagonal 2 5 mm Screwdriver slotted 150 mm 8 mm Screwdriver pozi drive PZ1 80 mm Screwdriver torque WARNING High voltages exist on this artificial antenna when it is in use Capacitors must be properly insulated from earth Table 13 Test equipment cont Equipment Notes 220 pF 500 V capacitor qty 4 to ...

Page 86: ...supply Power meter Dummy load RF signal generator front panel Receive audio Audio output test only Manpack transceiver 08 06304 001 coaxial cable to 12 V power supply Dummy load Artificial antenna Spectrum analyser optional RF sampler 08 06344 001 vacuum tester refer to Codan WARNING Ensure that polarity of this cable is correct before applying power only required for some tests only required for ...

Page 87: ...ume that the transceiver has no software or hardware options installed See page 115 Options to identify any specific testing for options NOTE All fault diagnosis should begin with the Repair flowchart see Figure 29 on page 95 Check voltages on boards as required NOTE All measurements for output power are in PEP WARNING When taking measurements keep the earth lead on the probe as short as possible ...

Page 88: ...gs for test equipment Item Setting Power supply 13 6 V DC AC voltmeter Suit audio level Frequency counter 10 samples second If accuracy greater than 20 Hz is required connect the counter to a traceable reference 0208 Test Set Balance Centre position two tones Output level left knob 20 dBv Output level right knob 50 dBv Speaker Load Speaker Noise Up position noise is off PTT Up position PTT is off ...

Page 89: ...a channel on the transceiver to test 1 Ensure both output level controls on the 0208 are set to the minimum level 1 Switch on PTT on the 0208 1 Adjust the output level of the 0208 until the RF output power of the transceiver reaches a maximum approximately 23 dBv on the 0208 1 Adjust the oscilloscope to view the RF envelope 1 Adjust the balance control on the 0208 for zero crossover balanced on th...

Page 90: ...e that is crushed and or distorted cables cracked case signs of water ingress vapour on inside of screen corrosion 1 Check that the connectors are clear of foreign material the connectors are free from corrosion the pins on all connectors are straight and not distorted 1 Record your results and actions see page 109 Test sheet for the 2110 series Manpack Transceiver 1 Return to the Repair flowchart...

Page 91: ...om the transceiver 1 Connect the power supply to the connector at the base of the transceiver unit 1 Press on the front panel to switch on the transceiver 1 Tap on the front panel until the backlight is switched off 1 Measure the current at the power supply 1 Record your results and actions see page 109 Test sheet for the 2110 series Manpack Transceiver 1 Return to the Repair flowchart see Figure ...

Page 92: ...ings listed in Table 15 NOTE A standard test profile may be created using NSP It should contain suitable frequencies and hot keys to access entries in the Control List for example Cfg RF Pre Amp NOTE You must log in as administrator to access entries in the Control List for which you want to create hot keys NOTE This profile is programmed back into the transceiver at the end of repair and testing ...

Page 93: ...rol List On Cfg Speaker External Control List Enabled Cfg Speaker Internal Front panel MUTE key Control List Disabled hold MUTE Easitalk Front panel EASITALK key Control List Off Key Beep Control List Off Mute Front panel MUTE key Control List Off S or V is not reverse highlighted on screen Screen Brightness Front panel key to toggle default off or 0 to go to setting in Control List Dark NOTE You ...

Page 94: ...pair flowchart see Figure 29 on page 95 Checking basic operation To check basic operation 1 Press to see the home screen 1 Press SCAN to toggle scan on and off 1 Use or to change channels 1 Press CALL to go to the first call screen 1 Record your results and actions see page 109 Test sheet for the 2110 series Manpack Transceiver 1 Return to the Repair flowchart see Figure 29 on page 95 Pass The key...

Page 95: ... to Speaker 1 Return to the Repair flowchart see Figure 29 on page 95 Performing the Antenna Tuner test receive To test the antenna tuner in receive 1 Set up the equipment see page 56 Setting up the test equipment 1 Connect the signal generator to the antenna stud on the front panel of the transceiver using a BNC to banana plug clip adaptor and the screw on adaptor 1 Set the Cfg Auto Tune Mode to ...

Page 96: ...e level of the background noise approximately 28 dBm 1 Set the RF output level of the RF signal generator to 120 dBm 1 Switch on the RF output from the RF signal generator 1 Record your results and actions see page 109 Test sheet for the 2110 series Manpack Transceiver 1 Switch off the RF pre amp in the transceiver 1 Repeat the test this time setting the 0 dB reference on the AC voltmeter to the l...

Page 97: ... by 6 dB 1 Record your results and actions see page 109 Test sheet for the 2110 series Manpack Transceiver 1 Switch off the RF output from the RF signal generator 1 Return to the Repair flowchart see Figure 29 on page 95 Performing the Audio Output test To test the audio output from the transceiver 1 Set up the equipment see page 56 Setting up the test equipment 1 Replace the AC voltmeter with an ...

Page 98: ...l or 1 0 kHz below the SCF of the selected LSB channel 1 Set the RF output level of the RF signal generator to 120 dBm 1 Switch on the RF output from the RF signal generator 1 Adjust the volume via the front panel to full volume 1 Set the 0 dB reference on the AC voltmeter to the level of the tone approximately 16 dBm 1 Set the RF signal generator to 1 0 kHz below the SCF of the selected USB chann...

Page 99: ... the test equipment 1 Select a channel to test 1 Set the RF signal generator to 1 0 kHz above the SCF of the selected USB channel or 1 0 kHz below the SCF of the selected LSB channel 1 Set the RF output level of the RF signal generator to 115 dBm 1 Switch on the RF output from the RF signal generator 1 Adjust the volume via the front panel so the tone is clearly audible 1 Switch on the noise on th...

Page 100: ...own PTT on the handset then whistle into the microphone on the handset 1 Release PTT on the handset 1 Record your results and actions see page 109 Test sheet for the 2110 series Manpack Transceiver 1 Press Tx PWR until Hi is selected 1 Return to the Repair flowchart see Figure 29 on page 95 Pass A reading on the RF power meter that is approximately 10 to 25 W PEP The current drawn on any channel s...

Page 101: ...connect the dummy load to the 50 connector 1 Return the Cfg Auto Tune Mode to ATU 50 Ohm Codan 1 Return to the Repair flowchart see Figure 29 on page 95 Performing the Frequency test To test the frequency of the transceiver 1 Set up the equipment see page 56 Setting up the test equipment 1 Select a channel with a high frequency ideally 30 MHz 1 Press TUNE on the front panel 1 Hold down PTT on the ...

Page 102: ...series Manpack Transceiver then increase the audio output level on the 0208 by 10 dB 1 Record your results and actions see page 109 Test sheet for the 2110 series Manpack Transceiver To protect the ALC 1 Reduce the output level on the 0208 until the RF output power of the transceiver is 3 dB below the ALC threshold 1 Switch off PTT on the 0208 1 Record the DC supply current from the power supply 1...

Page 103: ...he 0208 until the RF output power of the transceiver stops increasing then increase the output level of the 0208 by 10 dB 1 Record your results and actions see page 109 Test sheet for the 2110 series Manpack Transceiver 1 Switch off PTT on the 0208 1 Return to the Repair flowchart see Figure 29 on page 95 Pass A reading on the RF power meter that is between 20 and 25 W PEP NOTE Equivalent readings...

Page 104: ...stops increasing then increase the output level of the 0208 by 10 dB 1 Record your results and actions see page 109 Test sheet for the 2110 series Manpack Transceiver 1 Switch off PTT on the 0208 1 Press Tx PWR until Hi is selected 1 Return to the Repair flowchart see Figure 29 on page 95 Pass A reading on the RF power meter that is between 4 and 5 W PEP NOTE Equivalent readings for power meters w...

Page 105: ...t 1 Switch on PTT on the 0208 1 Adjust the output level of the 0208 until the RF output power of the transceiver stops increasing then increase the output level of the 0208 by 10 dB 1 Analyse the RF envelope using Figure 20 Figure 21 Figure 22 and Figure 23 Figure 20 Acceptable two tone RF envelope Figure 21 Defective two tone RF envelope typical overbias of PA Pass The RF waveform envelope is acc...

Page 106: ...ve two tone RF envelope typical underbias of PA Figure 23 Defective two tone RF envelope typical spurious related problems 1 Record your results and actions see page 109 Test sheet for the 2110 series Manpack Transceiver 1 Switch off PTT on the 0208 1 Return to the Repair flowchart see Figure 29 on page 95 ...

Page 107: ...ch on PTT on the 0208 1 Adjust the output level of the 0208 until the RF output power of the transceiver stops increasing then increase the output level of the 0208 by 10 dB 1 Analyse the display on the spectrum analyser using Figure 24 Figure 24 Intermodulation measurements using a spectrum analyser 1 Record your results and actions see page 109 Test sheet for the 2110 series Manpack Transceiver ...

Page 108: ...lows 1 Switch on PTT on the 0208 1 Adjust the output level of the 0208 until the RF output power of the transceiver stops increasing then increase the output level of the 0208 by 10 dB 1 Observe the output from the spectrum analyser 1 Record your results and actions see page 109 Test sheet for the 2110 series Manpack Transceiver 1 Switch off PTT on the 0208 1 Return to the Repair flowchart see Fig...

Page 109: ...e chassis 1 Disconnect the battery connector 1 Loosen the labelled screw about 5 mm then push the screw back into the hole 1 Stand the transceiver upright 1 Remove the six screws from the front panel 1 Locate the open end of the housing over a block of wood that fits within the housing and is approximately 100 mm high then push the housing down to expose the chassis Figure 25 Removing the housing ...

Page 110: ...rear of the Front Panel PCB that hold the chassis to the front panel 1 Remove the screw and four spacers from the Front Panel PCB then carefully separate the connectors holding the PCBs together 1 If the GPS option is fitted to the Front Panel PCB disconnect the thin coaxial cable that passes through to the Front Panel Assembly 1 If the external GPS antenna connector is fitted disconnect the thick...

Page 111: ...the RF IF Synthesiser PCB for an exciter output frequency within 3 Hz of the SCF 1 Release PTT on the handset 1 Return to the Repair flowchart see Figure 29 on page 95 if required Adjusting the PA RF IF Synthesiser PCB 08 06039 001 see Figure 11 on page 30 NOTE Wait for at least five minutes after switching on the transceiver before adjusting the frequency NOTE You may need to program specific cha...

Page 112: ... drive between connector J2 on the PA Filter PCB and connector J101 on the RF IF Synthesiser PCB 1 Return to the Repair flowchart see Figure 29 on page 95 if required Adjusting the PA bias To adjust the bias of the PA output transistors 1 Switch off the transceiver 1 Disconnect the exciter output from the PA by removing the RF drive between connector J2 Tx coaxial on the PA Filter PCB and connecto...

Page 113: ...PA Filter PCB and connector J101 on the RF IF Synthesiser PCB 1 Return to the Repair flowchart see Figure 29 on page 95 if required Adjusting high output power To adjust the high output power 1 Select any frequency between 4 and 6 MHz 1 Switch on PTT on the 0208 1 Adjust the output level of the 0208 until the RF output power of the transceiver stops increasing then increase the output level of the...

Page 114: ...s increasing then increase the output level of the 0208 by 3 dB 1 Adjust LO PWR R124 for 5 W PEP see Figure 12 on page 30 1 Check that the two tone waveform is clean and undistorted If it is not clean and undistorted further analysis is required 1 Switch off PTT on the 0208 1 Press Tx PWR until Hi is selected 1 Return to the Repair flowchart see Figure 29 on page 95 if required PA Filter PCB 08 06...

Page 115: ...el Assembly with the sockets on the Front Panel PCB then gently push the PCBs together 1 Re insert the screw and four spacers on the Front Panel PCB 1 Place the Front Panel PCB against the chassis then re insert the four screws that hold the chassis to the PCB 1 Tighten the screw on the rear of the antenna stud to reconnect the antenna tuner To re assemble the transceiver 1 Place any screen covers...

Page 116: ...p immediately The vacuum reading on the gauge should stabilise at approximately 250 millibars If the reading is between approximately 250 and 300 millibars proceed with the test If the reading is between approximately 250 and 0 millibars repeat the setup steps above but allow the vacuum pump to create a vacuum of up to approximately 700 millibars 1 Record the reading on the gauge 1 Wait 5 minutes ...

Page 117: ...ceiver 2110 series Repair Guide 85 1 Wait a minute for the transceiver to return to atmospheric pressure 1 Screw the breather screw back into place then tighten to 0 7 Nm using a torque screwdriver 1 Connect the battery pack to the base of the transceiver ...

Page 118: ...for low noise operation so receiver performance remains optimal while charging the battery pack via the front panel NOTE The 3123 Fast AC Battery Charger connects directly to the battery pack for charging You cannot use this charger through the 19 way or 5 way connector on the front panel of the transceiver CAUTION Charging is recommended between 0 and 40 C 104 F The battery will not commence char...

Page 119: ...The charger has finished charging the battery pack 3123 Green solid The charger has an appropriate power supply connected Off The charger does not have an appropriate power supply connected or is not functioning correctly OUTPUT Yellow solid The charger is charging the battery pack Yellow slow flash The charger has finished charging the battery pack Yellow red alternating flash The battery pack ha...

Page 120: ...cator on the front panel screen shows that the battery pack is charging When charging is complete the battery status indicator is full WARNING The battery pack should be charged with the connector facing upward and the vents clear of obstructions so that any gas created during the charging process is released CAUTION Provide clear notification that charging is underway Ensure there is adequate ven...

Page 121: ...ischarge should only be carried out periodically as follows For the periodic full discharge cycle run the battery down to zero capacity using the transceiver The transceiver switches off automatically when the battery is fully discharged The Codan battery packs have in built monitoring which is reported in the Battery entry in the Control List You should view the Battery Cycle setting for the numb...

Page 122: ...tached PCB Figure 28 Connections between the battery cells and the Battery Monitor PCB 1 Disconnect the black wire by easing its connector away from the PCB 1 Disconnect the red wire by easing its connector away from the PCB WARNING Battery cells are electrically live at all times and must be treated with extreme caution They may supply high short circuit currents even if they appear to be damaged...

Page 123: ...otate the head of the arrow on the rotary switch to position F to reset the battery data 1 Rotate the head of the arrow on the rotary switch to one of the following positions 1 Check that the gasket is clean and sitting correctly within its groove 1 Gently position the lid onto the battery pack taking care with the PCB wiring and the foam lining 1 Secure the lid in place with the 10 screws Replaci...

Page 124: ...of the following equivalent fuses 1 Check that the gasket is clean and sitting correctly within its groove 1 Gently position the lid onto the battery pack taking care with the PCB wiring and the foam lining 1 Secure the lid in place with the 10 screws Name Part number Bussman GDB 10A Littelfuse 216010 Conquer UBM 10A ...

Page 125: ...you should disassemble the transceiver only when this is indicated in the process WARNING When taking measurements keep the earth lead to the probe as short as possible Flowchart See Repair flowchart Figure 29 on page 95 Disassembly flowchart Figure 30 on page 97 Power On fault diagnosis flowchart Figure 31 on page 99 Receive fault diagnosis flowchart 1 Figure 32 on page 101 Receive fault diagnosi...

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Page 127: ...r Adjust frequency Repair flowchart Inspect for damage Receive fault diagnosis flowchart Pass test No Yes Re assemble transceiver if required PA Filter PCB suspected faulty RF IF Synthesiser PCB suspected faulty Audio Control PCB suspected faulty RF IF Synthesiser PCB suspected faulty RF IF Synthesiser PCB suspected faulty Test completed PA Filter PCB suspected faulty Adjust bias Distortion and In...

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Page 129: ...rs Is there corrosion to internal metal parts No Yes Yes No Disassembly flowchart Disassemble transceiver Are any cables damaged or disconnected Yes No Are any fasteners loose Yes No Replace damaged parts Replace corroded parts Check for leaks Replace o rings Replace or reconnect cables Tighten fasteners as required Return to Repair flowchart See page 77 See page 95 ...

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Page 131: ...dio Control PCB Are cables OK No Yes Disconnect P101 P102 and P103 on Audio Control PCB Repair fuse Is the current drawn 10 mA Yes No Connect P101 on Audio Control PCB Is the current drawn 120 mA or fuse blows Yes No Leave 2110 on switch off power at supply and disconnect J301 and J302 on Audio Control PCB Connect P102 on Audio Control PCB Is the current drawn 120 mA or fuse blows Yes No Connect P...

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Page 133: ... at OUTPUT 60 mV p p No Check RF at centre pin of J2 on Antenna Tuner PCB Is RF at J2 60 mV p p No Check RF at centre pin of J1 on Antenna Tuner PCB Is RF at J1 60 mV p p Yes Check RF at TX_RX on PA Filter PCB Is RF at TX_RX 60 mV p p Replace PA Filter PCB Check and or replace coaxial cable between PA Filter PCB and RF IF Synthesiser PCB No Yes Yes Check and or replace 50 ohm connector and associa...

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Page 135: ...able between RF IF Synthesiser PCB and Audio Control PCB Lower Front Panel Assembly from chassis Check RF at AF_OUT on Front Panel PCB Is RF at AF_OUT 1 2 V p p Check and or replace ribbon cable J2 between Audio Control PCB and Front Panel PCB No Yes Check internal speaker is switched on Check audio between P2 pins 2 and 3 on Front Panel PCB Is audio between pins 2 and 3 1 2 V p p Replace Front Pa...

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Page 137: ...Yes Check audio at Tx AF on RF IF Synthesiser PCB Is audio at Tx AF 900 mV p p Check audio at TX_Audio on Audio Control PCB Is audio at TX_Audio 900 mV p p Replace RF IF Synthesiser PCB Check and or replace ribbon cable between P202 on RF IF Synthesiser PCB and P103 on Audio Control PCB Check audio at GP_AUDIO_IN on Audio Control PCB Is audio at GP_AUDIO_IN 200 mV p p Replace Audio Control PCB Low...

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Page 139: ...s RF at TX_RX 160 mV p p No Check and or replace coaxial cable between PA Filter PCB and RF IF Synthesiser PCB Yes Check RF at centre pin of J2 on Antenna Tuner PCB Is RF at J2 110 V p p Yes No Replace PA Filter PCB Check RF at centre pin of J1 on Antenna Tuner PCB Check and or replace coaxial cable between Antenna Tuner PCB and PA Filter PCB Yes Check and or replace 50 ohm connector and associate...

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Page 141: ...s required Transceiver details Unit Serial number Firmware version 2110 Transceiver Unit Battery pack Handset Options fitted Mechanical inspection Inspect for Yes No Action Physical damage Water ingress Corrosion Connector pins straight Operational tests Test Criteria Reading Pass Fail Action Power On Battery Front panel displays Logo screen Power On Power supply Current drawn 220 mA with backligh...

Page 142: ... dBm Sensitivity RF amp on RF output level 120 dBm AC voltmeter reading 10 dB RF amp off RF output level 114 dBm AC voltmeter reading 10 dB AGC RF output level from signal generator 106 dBm Audio Output RF output level 60 dBm with audible tone from 0208 Waveform that does not clip and reaches 1 0 V p p Selectivity 1 kHz from SCF RF output level from signal generator 55 dBm AC voltmeter reading 0 d...

Page 143: ...o RF power meter reading approx 5 W PEP current drawn 2 A Antenna Tuner SWR reduces to 2 power to load 25 W PEP Band 1 Band 2 Band 3 Band 4 Band 5 Band 6 Band 7 Frequency Frequency counter reading within 20 Hz of channel frequency MHz ALC PEP ALC threshold Output level ALC threshold Increase in RF output level 0 5 dB DC supply current 3 dB below ALC threshold with load DC supply current reduced by...

Page 144: ...5 W PEP for each band 4 to 6 MHz Band 1 Band 2 Band 3 Band 4 Band 5 Band 6 Band 7 Low Power RF power meter reading between 4 to 5 W PEP for each band 4 to 6 MHz Band 1 Band 2 Band 3 Band 4 Band 5 Band 6 Band 7 Distortion Oscilloscope RF waveform envelope is acceptable If Fail what type Transmit tests cont Test Criteria Reading Pass Fail Action ...

Page 145: ...ide 113 Intermodulation Spectrum analyser IMD products 26 dB down on each band Band 1 Band 2 Band 3 Band 4 Band 5 Band 6 Band 7 Spectrum analyser spurious transmissions and harmonics typically 60 dB below peak carrier level Transmit tests cont Test Criteria Reading Pass Fail Action ...

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Page 147: ...n is not active at the time of testing for example the voice encryptor is not active Figure 36 GPS receiver NOTE Fitted options are indicated on the label on the back panel of the transceiver For information on option See GPS Receiver Figure 36 Connector for External GPS Antenna Figure 37 Voice Encryptor Figure 38 Filters Figure 39 GPS antenna GPS Receiver PCB FRONT PANEL ASSEMBLY FRONT PANEL PCB ...

Page 148: ... is part of the Front Panel Assembly The GPS connector is optional for 2110 Manpack Transceivers It is not available for the 2110v Table 20 Front Panel Assembly and Final Assembly with GPS connector Transceiver Front Panel Assembly Final Assembly 2110 08 06140 003 08 06155 008 08 06155 009 NUT WASHER SUPPLIED WITH CABLE ASSEMBLY TIGHTEN NUB TO 3 Nm ...

Page 149: ...Options Manpack Transceiver 2110 series Repair Guide 117 Figure 38 Voice encryptor Figure 39 Filters Encryptor PCB AUDIO CONTROL PCB Filter assembly RF IF PCB ...

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Page 151: ...Means Bold name of an entry in a list Italics a cross reference or text requiring emphasis This icon Means WARNING your actions may cause harm to yourself or the equipment CAUTION proceed with caution as your actions may lead to loss of data privacy or signal quality NOTE the text provided next to this icon may be of interest to you 1 a step to follow ...

Page 152: ...LM Codan automated link management codec coder decoder CPLD complex programmable logic device CRO cathode ray oscilloscope CTS clear to send CW continuous wave carrier wave DAC digital to analogue converter DC direct current DDS direct digital synthesis DSP digital signal processor processing EEPROM electrically erasable programmable read only memory EXT external FET field effect transistor FWD fo...

Page 153: ...lifier PC personal computer PCB printed circuit board PD potential difference PEP peak envelope power p p peak to peak ppm parts per million PTT press to talk PWR power REF OSC reference oscillator RF radio frequency RMS root mean square RTS request to send Rx receive receiver SCF suppressed carrier frequency SCL serial clock SDA serial data SINAD signal noise distortion to noise distortion ratio ...

Page 154: ...esent when listening to a channel frequency The number of cycles per second of a radio wave usually expressed in kilohertz front panel A panel on the transceiver that is used to control the functions of the transceiver It consists of a display keypad and connectors handset A hand held device that consists of a microphone PTT button and earphone PTT button Press to talk button located on the left s...

Page 155: ...tion device fuse etc G generator battery etc H signalling indicating device lamp LED buzzer etc IC integrated circuit thick film hybrid etc J jack socket K relay key switch L inductor M indicating device meter etc P plug R resistor S switch T transformer common mode choke TP test point U modem modulator demodulator V semiconductor not including small signal and power diodes X terminals Z quartz cr...

Page 156: ...th metre inch feet yard mile m in ft yd mi Mass gram pound g lb Power watt W Power decibels relative to 1 mW dBm Power decibels relative to 1 mV dBv Power ratio decibel dB Temperature degrees Celsius degrees Fahrenheit C F Time hour h second s Voltage volt V Unit Name Multiplier p pica 0 000000000001 µ micro 0 000001 m milli 0 001 d deci 0 1 k kilo 1000 M mega 1000000 ...

Page 157: ...ies Manpack Transceiver Other associated documents are Manpack Transceiver 2110 series Getting Started Guide Codan part number 15 04136 EN Manpack Transceiver 2110 series Reference Manual Codan part number 15 04135 EN Manpack Transceiver 2110 series Technical Service Manual Codan part number 15 02071 EN NGT System Programmer Help Codan part number 15 04164 EN Declaration of Conformity for the 2110...

Page 158: ...Definitions 126 Manpack Transceiver 2110 series Repair Guide This page has been left blank intentionally ...

Page 159: ...odes Single sideband J3E USB or LSB or switched USB LSB AM H3E optional Frequency stability 1 5 1 ppm 30 to 60 C standard 0 5 ppm 30 to 60 C high stability Programming Configuration of transceiver is via the GPIO port using NSP programming software and a PC or via the front panel by qualified personnel or where permitted by the operator RF input output impedance Whip long wire antenna via internal...

Page 160: ...Salt Fog Method 510 4 Sand and Dust Method 512 4 Immersion Method 514 5 Vibration Method 516 5 Shock Cooling Convection from case Size 2110 including battery 245 mm W 350 mm D 92 mm H 9 8 in W 14 0 in D 3 7 in H 2110 only 245 mm W 250 mm D 92 mm H 9 8 in W 10 0 in D 3 7 in H Weight 2110 only 2 5 kg 5 5 lb 17 Ah LiFePO4 battery pack 2 6 kg 5 7 lb 13 Ah NiMH battery pack 2 9 kg 6 4 lb 8 Ah NiMH batt...

Page 161: ...dB p p 500 to 2500 Hz Desensitisation 10 dB SINAD reduced to 7 dB SINAD 1 and 4 kHz ref SCF USB 50 55 dB 10 kHz 65 70 dB 50 kHz 80 85 dB Blocking As for Desensitisation For frequencies 50 kHz 80 dB Image rejection Better than 85 90 dB Spurious responses Better than 70 80 dB No more than 10 self generated signals 0 15 V PD Intermodulation To produce a third order intermodulation product equivalent ...

Page 162: ...ntrol average control disabled on handset PTT Duty cycle 50 normal speech over full temperature range 50 multi tone continuous data mode 5 minutes on maximum at ambient temperature up to 40 C 104 F using 50 antenna port Supply current Two tone into 50 2 5 to 3 5 A Average speech 1 A for battery life calculations Protection Safe under all load conditions by limiting reflected power to 4 W PEP and l...

Page 163: ...ll tuning activity performed at 5 W nominal Antenna types antenna stud Short Whip 1 5 m 5 ft nominal from 3 to 30 MHz Long Whip 3 m 10 ft nominal from 2 to 30 MHz Long Wire 10 m 33 ft from 1 6 to 30 MHz Memory capacity The last 100 frequencies selected Tuning time antenna types as in General specifications First time tuning 2 5 s typical From memory 50 ms typical Duty cycle antenna stud 10 normal ...

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