Company Name ___________________________ Name ___________________________ Department ___________________________ Street or PO Box ___________________________ Town and Postcode ___________________________ Country ___________________________ Customer Services Mobile Radio Division Tait Electronics Ltd PO Box 1645 Christchurch New Zealand Fax: (64) (3) 358-3903 Manual Product Code M___________-______-______
Tait Mobilfunk GmbH Willstätterstraße 50 D-90449 Nürnberg 60 Germany Phone: 49 911 967-460 Fax: 49 911 967-4679 E-mail: tait@t-online.de Tait Electronics Ltd 558 Wairakei Road P.O. Box 1645 Christchurch New Zealand Phone: 64 3 358-3399 Fax: 64 3 358-3636 Tait Electronics (Aust) Pty Ltd 275 Toombul Road Northgate 4013 P.O.
! This manual contains general, technical and servicing information on T2000 Series II mobile two-way radios. We have published this manual in a ring binder so that “revision packages” containing additional information can be added as required. Revision packages will normally be published to coincide with the release of information on a new PCB, and may also contain additions or corrections pertaining to other parts of the manual.
" If you find an error in this manual, or have a suggestion on how it might be improved, please do not hesitate to contact the Technical Writer, Product Support Group, Tait Mobile Radio Division, Tait Electronics Ltd, P.O. Box 1645, Christchurch, New Zealand. # # $ Any enquiries regarding this manual or the equipment it describes should be addressed in the first instance to your nearest approved Tait Dealer or Service Centre.
+ , * ' # The total number of pages in this Manual is 484, as listed below. Page Issue Date 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.
5.17 5.18 5.19 5.20 5.21 5.22 5.23 5.24 5.25 5.26 5.27 5.28 5.29 5.30 5.31 5.32 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.10 7.1 7.2 7.3 7.4 7.1.1 7.1.2 7.1.3 7.1.4 7.1.5 7.1.6 7.1.7 7.1.8 7.1.9 7.1.10 7.2.1 7.2.2 7.2.3 7.2.4 7.2.5 7.2.6 7.2.7 7.2.8 7.2.9 7.2.10 7.3.1 7.3.2 7.3.3 7.3.
. 7.7.9 7.7.10 7.8.1 7.8.2 7.8.3 7.8.4 7.8.5 7.8.6 7.9.1 7.9.2 7.9.3 7.9.4 7.9.5 7.9.6 7.9.7 7.9.8 7.9.9 7.9.10 7.9.11 7.9.12 7.10.1 7.10.2 7.10.3 7.10.4 7.10.5 7.10.6 7.10.7 7.10.8 7.10.9 7.10.10 7.10.11 7.10.12 7.10.13 7.10.14 7.10.15 7.10.16 7.10.17 7.10.18 7.10.19 7.10.20 7.10.21 7.10.22 7.10.23 7.10.24 7.10.25 7.10.26 7.10.27 7.10.28 7.10.29 7.10.30 7.11.1 7.11.2 7.11.3 7.11.
/ 7.17.3 7.17.4 7.17.5 7.17.6 8.1 8.2 8.1.1 8.1.2 8.1.3 8.1.4 8.1.5 8.1.6 8.1.7 8.1.8 8.1.9 8.1.10 8.1.11 8.1.12 8.1.13 8.1.14 8.1.15 8.1.16 8.1.17 8.1.18 8.1.19 8.1.20 8.1.21 8.1.22 8.1.23 8.1.24 8.2.1 8.2.2 8.3.1 8.3.2 8.3.3 8.3.4 8.4.1 8.4.2 8.5.1 8.5.2 8.5.3 8.5.4 8.6.1 8.6.2 8.6.3 8.6.4 8.7.1 8.7.2 8.7.3 8.7.4 8.8.1 8.8.2 8.8.3 8.8.
0 8.13.7 8.13.8 8.14.1 8.14.2 8.14.3 8.14.4 8.14.5 8.14.6 8.14.7 8.14.8 8.14.9 8.14.10 8.14.11 8.14.12 8.14.13 8.14.14 8.14.15 8.14.16 8.14.17 8.14.18 8.14.19 8.14.20 8.14.21 8.14.22 8.14.23 8.14.24 8.14.25 8.14.26 8.14.27 8.14.28 8.15.1 8.15.2 8.15.3 8.15.4 8.15.5 8.15.6 8.15.7 8.15.8 8.15.9 8.15.10 8.15.11 8.15.12 8.15.13 8.15.14 8.15.15 8.15.16 8.15.17 8.15.18 8.16.1 8.16.2 8.16.3 8.16.4 8.16.5 8.16.
1 ) 2 $ 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 1.2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 1.2.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 1.2.2 General . . . . . . . . . . . . . . . . . . . . . . . . .
2.10 T2000-800 RF PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.14 2.10.1 T2000-800 Receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.14 2.10.2 T2000-800 Exciter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.15 2.10.3 T2000-800 Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.15 2.
4.3 Trunked Radios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.4 4.3.1 Trunking System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.4 4.4 Receiver Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5 4.4.1 To Check The Squelch Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5 4.4.
5.8.2.2 5.8.3 5.8.3.1 5.8.3.2 5.8.4 5.8.5 5.8.5.1 5.8.5.2 5.8.6 5.9 T2040 & T2050 MTM Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.9 Computer Controlled Test Mode (CCTM) . . . . . . . . . . . . . . . . . . . . . . . . . 5.9 CCTM Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10 CCTM Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10 Power-Up State.
" . )6 $ 7.1 T2000-100 RF PCB Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IPN 220-01331-02 . . . . . . . . . . . . . Mechanical & Miscellaneous Parts . . . . . . . . . . . . . . . ". . . . . . . . . . . . . . . . . . . . . Grid Reference Index. . . . . . . . . . . . . . . . . . . . . . . . . . . ". . . . . . . . . . . . . . . . . . . . . PCB Layout - Top. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ". . . . . . . . . . . . . . . . . . . . .
7.7 7.8 7.9 7.9 + T2000-800 RF PCB Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IPN 220-01305-03 . . . . . . . . . . . . . Mechanical & Miscellaneous Parts . . . . . . . . . . . . . . . " . . . . . . . . . . . . . . . . . . . . Grid Reference Index . . . . . . . . . . . . . . . . . . . . . . . . . . " . . . . . . . . . . . . . . . . . . . . PCB Layout - Top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " . . . . . . . . . . . . . . . . . . . .
- 7.11 T2020, T203X, T2040, T2050 & T2060 HC11 Logic PCB Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IPN 220-01344-02 . . . . . . . . . . . . Mechanical & Miscellaneous Parts . . . . . . . . . . . . . . . ". . . . . . . . . . . . . . . . . . . . Grid Reference Index. . . . . . . . . . . . . . . . . . . . . . . . . . . ". . . . . . . . . . . . . . . . . . . . PCB Layout - Top. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ". . . . . . . . . . . . . . . . . .
. / !## 8.1 T2008 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1.1 8.1.1 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1.2 8.1.2 Performance Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1.3 8.1.3 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1.
/ 8.10 T2000-A450X CTCSS & Scrambler Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.10.1 Components Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.10.2 Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.10.3 T2000-A450X Link Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.10.4 PCB Information . . . . . . . . . . . . . . . . . . . . .
0 0 7 9.1 Identifying The Software Version Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.2 9.2 Software History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.3 9.2.1 T2010 & T2015 Radios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.3 9.2.2 T2020 Radios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.
1 Figure 8.11.3 Figure 8.12.1 Figure 8.12.2 Figure 8.12.3 Figure 8.13.1 Figure 8.13.2 Figure 8.14.1 Figure 8.14.2 Figure 8.14.3 Figure 8.14.4 Figure 8.15.1 Figure 8.15.2 Figure 8.15.3 Figure 8.15.4 Figure 8.15.5 Figure 8.16.1 Figure 8.16.2 Figure 8.16.3 Figure 8.16.4 T2000-50 9 Way D-Range Connector (S21) . . . . . . . . . . . . . . . . . . . . . . 8.11.7 T2000-60 UART PCB Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.12.3 T2000-60 Test Equipment Set-Up. . . . . . . .
8 2 $ This Section introduces the T2000 Series II radio, describing models and features available and their performance. The following topics are covered in this Section: Section Title Page 1.1 Introduction 1.2 1.2 Specifications 1.3 Introduction General Receiver Performance Transmitter Performance Frequency Reference Trunking T2030, T2035, T2040 & T2050 Models T2060 Model 1.3 1.3 1.5 1.7 1.8 1.9 1.9 1.9 1.3 Operating Instructions 1.9 1.
8 8 $ # The T2000 Series II is a high performance mobile two way radio. It covers ten frequency bands between 66 and 870MHz, and is available in both trunked and conventional models. Operation of the T2000 is by handheld microphone, a press-to-talk switch and a range of front panel function keys. The T2020 and T2040 models are fitted with an LCD display and alphanumeric keypad. Most of the functions of the T2000 are microprocessor controlled.
8 & # # 8 8 $ # 8 The performance figures given are typical figures, unless otherwise indicated, for equipment operating at standard room temperature. Where applicable, the test methods used to obtain the following performance figures are those described in the European specification ETS 300-086. Details of test methods and the conditions which apply for type approval testing in all countries can be obtained from Tait Electronics Ltd.
8" Tx/Rx Offset: T2000-200 T2000-300 T2000-400, T2000-100 T2000-500, T2000-600 T2000-700 T2000-800 T2000-900 .. .. .. .. .. .. .. 0 to 22MHz 0 to 38MHz 0 to 50MHz 0 to 70MHz 0 to 30MHz 0 to 45MHz 0 to 40MHz Supply Voltage: Operating Range Standard Test Voltage Polarity Polarity & Overvoltage Protection Brown-out Recovery .. .. .. .. .. 10.8V to 16V DC 13.8V DC negative earth internal transorb crowbar <2s to full operation following supply fluctuations below 10.
Remote Control Head Dimensions: Length Width Height .. 26mm .. 159mm .. 51mm Weight (radio & control head) .. 1.2kg 8 8 8+ # # Type: All Except T2000-200 T2000-200 .. triple conversion superheterodyne .. dual conversion superheterodyne Sensitivity: 12dB Sinad 20dB Sinad (psophometric) 20dB Quieting .. better than -117dBm .. better than -113dBm ..
8- Audio: Minimum Load Impedance Rated Power (into 4Ω) Distortion: @ Rated Power (1kHz) @ 0.5W (0.3 to 3.0kHz) Response Bandwidth .. 2Ω .. 4W (at 1kHz) .. <5% .. <3% (narrow band) <2.5% (medium band) <2% (wide band) .. within +1, -3dB of 6dB/octave de-emphasis .. 300Hz to 3kHz Selectivity .. better than 70dB Spurious Response Attenuation All Except T2000-000, -800 T2000-000 T2000-800 .. 75dB (80dB EIA) .. 60dB .. 70dB (70dB EIA) Intermodulation Response Attenuation ..
8 8" 8. # Power Output: Maximum: All Except T2000-800 T2000-8000 High (high setting): All Except T2000-800 T2000-8000 . Low (low setting): T2000-200, -300, -400 T2000-100, -500, -600, -700, -900 T2000-800 Low Power Version .. 30W .. 25W .. 25W .. 15W .. .. .. .. 1 to 25W 5 to 25W 5 to 15W 1 to 7W (T2000-500, -600) Duty Cycle (33%) .. 2 minutes Tx, 4 minutes Rx Lock Up Time (synthesiser) ..
8/ Audio: Microphone Type Input For 60% Deviation .. dynamic or electret .. 1.5mVrms maximum (at 1kHz) Distortion .. 5% Hum & Noise: All Except T2000-800: Narrow Band Medium Band Wide Band T2000-800: Wide Band .. 39dB .. 43dB .. 45dB .. 40dB Mismatch Capability: Ruggedness .. 2 minutes transmission into infinite VSWR .. VSWR 5:1 (all phase angles) Stability Transmit Timer (non-trunking models) 8 8+ 3 ( # .. programmable up to 4 minutes, or continuous.
8 8- 9 8 8-8 1 1: 1 +: 1"1 4 1+1 Data Modulation 80 .. as per MPT1317 Data Deviation (Tx: 60% full system deviation): Narrow Band .. 1.5kHz Medium Band .. 2.4kHz Wide Band .. 3kHz 8 8-8 1-1 System .. LTR® trunked1, systems x groups = 24 Data Deviation (Tx) .. 1kHz 8 *& $ # Refer to the User’s Guide supplied with the radio.
8 1 8" # ) The 3 groups of digits in a T2000 product code provide information about the radio’s model, RF type and options fitted, according to the conventions described below. The following explanation of the T2000 product codes is not intended to suggest that any combination of features is necessarily available in any one radio. For details regarding availability of specific T2000 radios, consult your nearest Tait dealer or subsidiary.
) # 8 # & This Section describes the operation of the basic circuit blocks found in the T2000 radio. Refer also to the circuit diagrams in Section 7 of this Manual. The following topics are covered in this Section: Section Title Page 2.1 Design Overview 2.2 2.2 Synthesiser 2.3 2.3 Audio & Regulators 2.4 2.4 TCXO/TX Audio PCB 2.4 2.5 IF PCB 2.5 2.6 T2000-100 & -400 RF PCB 2.
8 8 * 7 The T2000 radio is made up of two modules, the RF module and the control module. The RF module consists of an RF PCB unique to each frequency band with common plug-in IF and TCXO/Tx audio PCBs, determining the frequency stability and reference frequency. The control module consists of a logic PCB and a control head PCB. Each control module is unique to each T2000 model, i.e. T2010, T2015, T2020, T203X, T2040 or T2050.
8 8 Synthesiser IC201 (MC145158) receives channel and reference frequency information from the microprocessor via a three line serial interface: • DATA - synthesiser data: A counter: 7 bits M counter: 10 bits Ref. counter: 14 bits • CLK - synthesiser clock • ENABLE - synthesiser latch.
8" 8 ! 4 The nominal supply voltage of the T2000 is 13.8VDC but satisfactory operation is possible from supply voltages of between 10.8 and 16V. Power for the radio is switched via the volume control and switch on the control head. Overvoltage protection is provided in the form of an 18V zener diode. This will suppress transient spikes but prolonged overvoltage will cause the device to fail short circuit.
8+ 8+ $3 )6 The l0.7MHz signal from the RF PCB feeds Q104, passes through a crystal filter (Xl0l) and is amplified by Q111 and Q112 before passing through a 10.7MHz ceramic filter to a mixer/oscillator (Qll3). This 455kHz mixer output is further filtered and amplified by CF102, CF103 and Q114, then passes back to the RF PCB where it is demodulated by IC101. The RSSI function is internal to IC101.
8- 8- 111 11 4 "11 3 )6 8-8 111 11 4 "11 ! # The incoming signal from the antenna via the PIN switch passes through a high pass filter to the RF amplifier, Q101. The 50Ω output from the amplifier is coupled to a varicap tuned triplet which provides the spurious response rejection necessary for the first mixer. An attenuator is provided at the output to allow for fine adjustment of the front end gain.
8. L114 and L116 form a 50Ω delay line which provides the spurious response rejection necessary for the second mixer. L114 and L116 also provide the delay necessary for the noise blanker to detect and clamp noise pulses. The local oscillator signal of 38.4MHz for the second double balanced mixer is provided by the 12.8MHz reference via a tripler circuit, and the 10.7MHz output feeds the plug-in IF PCB.
8/ 8. 111 11 3 )6 8.8 111 11 ! # The incoming signal from the antenna via the PIN switch passes through a high pass filter to the RF amplifier, Q101. The 50Ω output from the amplifier is coupled to a varicap tuned triplet that provides the spurious response rejection necessary for the first mixer. An attenuator is provided at the output to allow for fine adjustment of the front end gain.
80 L114 and L116 form a 50Ω delay line that provides the delay necessary for the noise blanker to detect and clamp noise pulses and also provides a high impedance point for the signal to be clamped. The 10.7MHz output feeds the plug-in IF PCB through R128, R129 and R132 which provide the attenuation equivalent to the second mixer of the T2000-300, T2000-400, T2000500 or T2000-600.
8 1 8/ 111 11 3 )6 " 8/8 111 11 ! # The incoming signal from the antenna via the PIN switch passes through a high pass filter to the RF amplifier, Q101. The 50Ω output from the amplifier is coupled to a varicap tuned triplet which provides the spurious response rejection necessary for the first mixer. An attenuator is provided at the output to allow for fine adjustment of the front end gain.
8 L114 and L116 form a 50Ω delay line which provides the spurious response rejection necessary for the second mixer. L114 and L116 also provide the delay necessary for the noise blanker to detect and clamp noise pulses. The local oscillator signal of 38.4MHz for the second double balanced mixer is provided by the l2.8MHz reference via a tripler circuit, and the 10.7MHz output feeds the plug-in IF PCB.
8 80 111 +11: 111 -11: 111 .11: 011 4 111 3 )6 # 808 " $ # $ % $ & ! 111 +11: -11: .11: 011 4 111 # The incoming signal from the antenna via the PIN switch passes through a high pass filter to the RF amplifier, Q101. The 50Ω output from the amplifier is coupled to a varicap tuned triplet which provides the spurious response rejection necessary for the first mixer.
8 The VCO output is fed to the first double balanced mixer via a low pass filter to reduce harmonic content. The VCO signal is 49.lMHz below the RF signal and the first mixer output (at 49.lMHz) feeds the first post-mixer buffer, Q103. The output of Q103 feeds both a delay line and the noise blanker circuit. L114 and L116 form a 50Ω delay line which provides the spurious response rejection necessary for the second mixer.
8 " 8 1 111 /11 3 )6 % 8 18 111 /11 ' ! # The incoming signal from the antenna via the PIN switch passes through a band pass filter to the RF amplifier, Q101. The 50Ω output from the amplifier is coupled to a second band pass filter, and these two filters provide the spurious response rejection necessary for the first mixer. An attenuator is provided at the output to allow for fine adjustment of the front end gain.
8 + L114 and L116 form a 50Ω band pass filter which provides the spurious response rejection necessary for the second mixer. The local oscillator signal of 51.2MHz for the second double balanced mixer is provided by the 12.8MHz reference via a times 4 multiplier circuit, and the 10.7MHz output feeds the plug-in IF PCB. Each sub-block within the front end has been designed with 50Ω terminations for ease of testing and fault finding.
8 - 8 ) The primary task of the control section in the T2000 is to control the state of the radio at all times, based both on user input, and activity of the internal circuitry. To achieve this, the control section monitors the radio’s operation and responds to any changes with various control signals. The input shift registers are read by the microprocessor approximately 100 times per second.
' () * & " # 8 .
8 / $ " () *
8 8 8 0 1 1: 1 ;: 1"1: 1+1 4 1-1 =) , # )6 Transmitter speech from the microphone is preamplified and fed into an automatic level control circuit which also has three mute facilities (one for options and two for the microprocessor). The speech is pre-emphasised and high pass filtered to reduce CTCSS components. The speech passes via the RF PCB to the limiter on the TCXO/Tx audio PCB.
8 1
8 This Section provides information necessary for servicing T2000 Series II radios, and covers the following topics: Section 3.1 3.1.1 3.1.2 3.1.3 3.1.4 3.1.5 3.2 3.2.1 3.2.2 3.2.3 3.2.3.1 3.2.3.2 3.2.4 3.2.4.1 3.2.4.2 3.2.5 3.2.6 3.3 3.3.1 3.3.2 3.4 3.4.1 3.4.1.1 3.4.1.2 3.4.1.3 3.4.1.4 3.4.2 3.4.2.1 3.4.2.2 3.5 Title Page Servicing Precautions 3.
8 8 # # 8 8 ) !## Under certain circumstances the microprocessor can key the transmitter. Ensure that all instruments are protected from accidental transmit at all times. 8 8 ) ! , The equipment has been designed to operate with a 50Ω termination impedance, but will tolerate a wide range of antenna loading conditions.
8 8+ 8 ) # 7 = & Pozidriv screws are the preferred standard on all T2000 series equipment. Pozidriv No. 1 and 2 screwdrivers will fit all pozidriv screws used in the T2000: Philips cross-head screwdrivers are not satisfactory for use on these screws. The following diagram identifies the differences between Philips and Pozidriv screwdrivers.
8" 1 3 2 3 4 4 5 6 8 7 10 9 12 14 11 12 13 14 " # ! ! ! $ % % % % %
8 8+ $ # To carry out alignment it is necessary to remove only the top cover (1) and logic PCB retaining screws (3). It is essential that the bottom cover (13) and microprocessor shield (5) with its three retaining screws (4) are torqued down as specified in Figure 3.3. Various electronic components within the radio can be damaged by electrostatic discharge.
8- 8 8 8 8 8 , # # ) = Remove all covers, as instructed in Section 3.2.2. Unplug the loom running between the control head and the logic PCB. In EMC model radios, the loom connects to a Micromatch connector on the EMC filter PCB (refer to Section 3.2.5). 8 8 8 Remove the four screws on the front of the radio dummy front panel.
8 8" ) = 8 8"8 1 1: 1 +: 1 ; 4 1-1 8.
8/ The screws used in the control head are No. 4 Plastites, and should not be confused with the M3 screws used elsewhere. When being replaced, the No. 4 Plastite screws must be tightened to a torque of 8in.lb (0.9Nm). With the control head face down, gently remove the PCB (13), along with the keypad (8) and lightspreader (7). Do not disturb the positioning or height of the LEDs, as this is critical for reassembly.
8 8"8 80 1 1: 1"1 4 1+1 1 6 2 7 8 3 4 12 5 9 10 11 14 13 16 " # " $ % & & & *& ! ' ! ' ! ! ! $ ' ! & ! ( ) ! ! ) ! " $ 15 " "
8 1 With the control head face down, gently remove the PCB (13), along with the keypad (8) and lightspreader (7). Do not disturb the positioning or height of the LEDs, as this is critical for reassembly. Carefully remove the LCD (6) and lens (12). Lay the front panel (3) on a horizontal surface, with the light spreader (7) in place. Remove the volume knob (1) and volume knob nut (5) to access the lightspreader and keypad (8).
8 8+ 8 # ' ) 3 )6 Refer to Figure 3.7. Remove the top cover and open the logic PCB, as described in Section 3.2.1. Remove the microprocessor shield and bottom cover, as described in Section 3.2.2. The control head (locally mounted models) or dummy front panel (remotely mounted models) can now be removed. Unplug the loom running between the logic PCB and EMC filter PCB (18). Unplug the loom running between the EMC filter PCB and the control head.
8 8 7 ! & & # $ # 8 8 As the location of certain components in the PA is critical to performance, it is important that any components removed or disturbed are refitted in exactly the same location. & # ! Desolder the tabs by heating them with a soldering iron, then lifting them up towards the transistor with a thin stainless steel spike or screwdriver.
8" 8 & 8"8 # 8"8 8 # Surface mount devices require special storage, handling, removal and replacement techniques. This equipment should be serviced only by an approved Tait Dealer or Service Centre equipped with the necessary facilities. Repairs attempted with incorrect equipment or by untrained personnel may result in permanent damage. If in doubt, contact Tait Electronics Ltd or your nearest Tait Branch or Subsidiary.
8 " • Soldering iron: for use on electrolytic capacitors and plastic coated devices that may be damaged by a heat gun. • Microscope: for individual SMD inspection and for SMD replacement. Use the following diagram to identify types of SMD components. RESISTOR MELF SOIC PLCC CAPACITOR SOT QFP LCCC 272 ' () 14 ( +6 .
8"8 8 4 8 + & # * ) & Refer to Figure 3.9. (a) Capacitors, Resistors, MELF & SOT Hold the nozzle of the hot air tool above the component and keep it moving to ensure that the PCB is not damaged. Remove the SMD and clean away any glue using the hot air tool and a pair of tweezers. Remove any excess solder from the pads using solderwick. Deposit a small amount of solder paste on the pads using the solder paste dispenser or syringe.
8 - adaquate solder insufficient solder excess solder capacitor & resistor MELF SOT SOIC (gull leads) PLCC (J leads) & +6 + ( 8
8"8 8" (a) 8 . ) ) * 3 Cracked SMD Most often occurs with capacitors, caused by: • Thermal shock: if the SMD is heated too rapidly either it will crack or internal seals will be lost, resulting in premature failure. • In-service temperature changes that cause invisible micro-cracks. These start at or just under the end termination and will spread throughout the device over a long period of time.
8 / 8"8 8 ) & ) Cut the leads on the component side of the PCB. Heat the solder joint sufficiently to allow easy removal of the lead by drawing it out from the component side: do not use undue force. Fill the hole with solder and then clear with solderwick. 8+ Refer to the T2000 programming manual supplied with the T2000 programming kit, and Section 9 of this manual.
" "8 3 # This Section details test procedures will confirm that the T2000 has been adjusted correctly and is fully operational. The following topics are covered: Section Title Page 4.1 Test Equipment Required 4.2 4.2 Connecting The Radio 4.3 4.3 Trunked Radios 4.4 Trunking System Check 4.4 Receiver Performance Tests 4.
"8 "8 '( & ( The following equipment is required for functional testing. • Power supply cord, wired as shown in Section 8.3. • Power supply adjustable between 9 & 16V DC, with a capacity of at least 8A. • VHF or UHF signal generator: good quality FM 50Ω, usable from 0.1V (-127dBm) to 200mV (0dBm) pd (e.g. HP8640B, Marconi 2019). • Frequency counter: 10Hz to 650MHz, 2ppm stability, with at least a 2s time base resolution (e.g. Opto).
"8 "8 ) # The following diagram shows a suggested test equipment set-up. !"# # " $ % " " " ! " ! + 2) 2) 79 . () + ) -.
"8" "8 9 The ‘test’ facility enables T2000 trunked radios to emulate a multichannel radio, using the frequencies reserved for trunking. For a description of how to put the radio in test mode, refer to Section 5.8, “Trunked Radios: Test Mode”. Once the radio is in test mode, functional testing can be carried out as described in Section 4.4 and Section 4.5.
"8" "8+ # # In this Section, deviation settings are given first for wide band, followed by settings for medium band in brackets ( ) and settings for narrow band in square brackets [ ]. "8"8 ) #9 ( # *& Connect a sinad meter across the speaker terminals. Connect an on-channel RF signal generator to the antenna input terminal. Disable any signalling control in T2010 or T2020 models by using the monitor function.
"8- "8"8 ) #9 ! * & , ! Connect an audio millivoltmeter and an oscilloscope across the speaker terminals. Connect an on-channel RF signal generator to the antenna input socket, with the output set to -107dBm (1V) modulated to ±5kHz (±4kHz) [±2.5kHz] deviation at 1kHz AF. Set the volume control to the onset of clipping. The receiver output should be 4.2Vrms across 4Ω at +13.8V supply.
"8"8+ "8. ) #9 @A A Set the signal generator output level to -107dBm modulated to ±5kHz (±4kHz) [±2.5kHz] deviation at 1kHz AF. Connect an audio millivoltmeter across the speaker terminals. Set the volume control for a reading of 0.8V (0dBm) on a convenient scale on the millivoltmeter. Switch off the signal generator modulation. Note the reading on the millivoltmeter.
"8/ "8"8/ ) #9 *& * A 6 9 Connect an ignition noise simulator and an RF signal generator to the receiver antenna input. Set the signal generator modulation for ±3kHz (±2.4kHz) [±1.5kHz] deviation at 1kHz AF. Set the signal generator output level to give a 20dB sinad. Listen to the receiver output and check the operation of the noise blanker by temporarily short circuiting R135 on the RF PCB to ground, thus disabling the noise blanker.
"8+ "80 # In this Section, deviation settings are given first for wide band, followed by settings for medium band in brackets ( ) and settings for narrow band in square brackets [ ]. "8+8 ! # "8+8 8 ) #9 , ) # *& Connect an oscilloscope to monitor the waveform at TSP901 (TCXO PCB). Plug the microphone test lead into the control head microphone input socket. Apply a 1kHz sine wave.
"8 1 "8+8 8 ) #9 2 * ! # Connect the T2000 antenna output via a 30dB attenuator to a modulation meter. Plug the microphone test lead into the control head microphone input socket. Apply a 1kHz sine wave and adjust the output level to give a 3kHz (2.4kHz) [1.5kHz] deviation reading on the modulation meter. Connect a millivoltmeter across the input of the microphone test box and check for a reading of approximately 1mVrms on the millivoltmeter.
"8+8 "8 ) #9 3 7 ) ) # Connect an RF power meter to the transmitter output. Select a channel programmed for high power (25W). Close the PTT switch. Vary the supply voltage between 10.8 and 16V. Above 13.8V the RF power output should not increase by more than 2W. At 10.8V the RF power output should be more than 16W.
"8
+8 This Section provides general fault finding assistance, and is intended to be used in conjunction with the circuit descriptions and block diagrams in Section 2 and the circuit diagrams and PCB information in Section 7. The following topics are covered in this Section: Section Title Page 5.1 Servicing Warning 5.2 5.2 Visual Checks 5.2 5.3 Component Checks 5.2 Transistor Check Integrated Circuit (IC) Check 5.2 5.2 5.4 DC Checks 5.3 5.
+8 +8 # B T2000 Series II radios require specialised servicing techniques. Before attempting any disassembly or repair, refer to Section 3, “Introduction To Servicing”. Repairs attempted with incorrect equipment or by untrained personnel may result in permanent damage. If in doubt, contact Tait Electronics Ltd or your nearest Tait Branch or Subsidiary.
+8" +8 ) ) #9 Refer to the “Radio Won’t Switch On” fault finding chart in Section 5.10.1. Check all regulated supply voltages for the correct voltage levels. DC levels can be checked using the voltage information on the circuit diagrams.
+8" +8+ +8+8 # 3 ) #9 C)* 3 ( # Check that the VCO is phase locked. Connect a frequency counter (level +10dBm) to the VCO input to the mixer (junction of C241 and L109). Monitor the local oscillator frequency and check that it is above or below the required receive frequency according to the following list: +8+8 Model Local Oscillator Frequency T2000-100 27.7MHz below T2000-200 10.7MHz above T2000-300 27.7MHz above T2000-400 27.7MHz below 2000-500 49.
+8+8 +8+ 3 Refer to the “Synthesiser Faults”, “Receiver Front End Faults” and “Receiver IF Faults” fault finding charts in Section 5.10. Check that the VCO is on the correct frequency, and that the receiver is correctly aligned. Check that the sensitivity into the front end is -119dBm (typical). If the sensitivity is low (less than -117dBm), the fault can be traced by measuring the sensitivity into successive circuit blocks.
+8- +8. 9 ) #9 +8.8 6 ) #9 This checks that the local base station repeater is on air and checks that the correct base station frequency is programmed into the radio. +8.8 8 1 1 Reprogram the first normal hunt channel to be the base station repeater channel number. Enter test mode (refer to Section 5.8, “Trunked Radios: Test Mode”). Press the front panel +8.8 8 C4 key, and the FFSK should be audible.
+8/ 9 +8/8 * 7 +8. The test mode facility enables the trunked radio to emulate a multichannel radio, utilising the frequencies reserved for trunking. The radio can then be tested and aligned, as described in Section 4 and Section 6. There are two test modes provided: manual and computer controlled. • Manual Test Mode (MTM): Commands are entered and test results are displayed using the keys, LEDs and the display on the control head.
+8/ In MTM, the following operations are common to T203X, T2040 and T2060 radios: • A short beep is sounded after every key press. • All models accept the reset command character (^). • The microphone PTT switch functions as in normal operation, i.e. a PTT press/ release selects transmit and receive respectively. • LEDs or LCD annunciators are used to indicate transmit, synthesiser lock status and receive signal detect status (refer to Table 5.2, “Radio Mode/Status Display”).
+80 • The key selects MSK modem transmit test patterns. The LED is off for zeros, on for ones and flashing when preamble is being sent. Successive depressions of the key will scroll through the three states. Whenever the key is pressed, the modem transmit is enabled unless the radio is in receive, in which case the LED will illuminate momentarily. • The key controls the transmit power output of the radio.
+8 1 +8/8 8 )) # After power-up, a reset command or a hardware reset, the radio sends the logon prompt character “v”. Replying with an ASCII “%” within 500ms of the prompt will put the radio in CCTM. The radio will confirm engagement of CCTM by sending the prompt “-”, preceded by a “CR”. If no reply is received within the required period, the radio will engage normal trunked mode, or MTM if the test link is fitted or the ‘sticky’ MTM is active.
+8/8" +8 7 %& When manual or automated test mode is engaged after logon, the radio will be in the following state, where applicable to particular radio models. The numbers in brackets refers to the test facility, as described in Table 5.1, “T2000 Test Facilities”. • Synthesiser programmed to the last selected channel. • Modem transmit off (13). • • • • Force receive audio muted if in transmit mode (20). Force receive audio unmuted if in receive mode (21).
+8 +8/8+8 3 # The following table lists the test facilities available in MTM and CCTM for the T203X, T2040 and T2050. Facilities for the T2010, T2015 and T2020 are also listed for comparison, and further information about the tests is listed following the table. Within the table, a ‘-’ indicates the corresponding facility is not available, and “nnnn” is a one to four digit channel number (leading zeros are permitted).
T2010/T2015 T2020 Normal CCTM Normal CCTM Special functions: 92. set ‘sticky’ MTM 93. clear ‘sticky’ MTM 94. read serial number 95. read factory model ID 99.
+8 " • 14, 25, 72: These functions return a Boolean radio status value, either a ‘0’ or a ‘1’, as follows: Return Value ‘0’ ‘1’ 14 - read modem Rx state 25 - read Rx busy state 72 - read synth lock status data = 0 no RF signal detected out of lock data = 1 RF signal detected in lock • 20: The receive audio is muted temporarily to quieten the speaker whenever the radio is in transmit. This state may be temporarily overridden until the next receive to transmit transition.
+8/8- +8 + 9 & ) The mode or status of the radio is indicated by the behaviour of: • the monitor LEDs (ML1 and ML2) on the top side of the logic PCB • the radio control head LEDs. Unless otherwise stated, the two monitor LEDs behave as in normal operation: • ML2 is off • ML1 flashes at a rate of 1Hz to indicate watchdog timer ‘kick’ activity • In normal trunked radio mode, ML2 flashes at a rate of several Hertz.
+8 - Mode/State Program mode Cloning mode T2010/T2015 2010: all channel LEDs on 2015: display shows “00” AUX LED flashing. AUX/SCAN LEDs flash if clone failed. Target radio in programming mode.
+80 +8 . *& $ # & # # The options connectors, S13 and S14, are located on the top side of the T2000 logic PCBs, and are provided for use with plug-on accessory PCBs. The following tables describe the signals available on these connectors, and also on S15 (T2010 & T2015 logic PCB). Connection (to/from) Pin No.
+8 / Logic Levels Logic Sense Sink Source Imax Imax carrier detect opening time: <35ms closing time: <20ms (8dB sinad, 6dB margin) 0V 5V 0V = busy 0.5mA 0.1mA S14-4 Rx audio gate information 5V CMOS 5V = audio 1.5mA 0.3mA /PTT-TO-OPT S14-5 from mic.; linked to 18 pull-up 0V = Tx /PTT-FRM-OPT S14-6 Tx 5V CMOS 0V = Tx /IN-LOCK S14-7 synthesiser lock detect (lock-up time: <20ms) 0V 5V 0V = lock MIC-MUTE S14-8 disables AF from mic.
BCD Channel Number Codes +8 0 BCD-5 BCD-4 BCD-3 BCD-2 BCD-1 BCD-0 BCD Number 0 0 0 1 1 0 6 7 0 0 0 1 1 1 7 8 0 0 1 0 0 0 8 9 0 0 1 0 0 1 9 10 0 1 0 0 0 0 10 11 0 1 0 0 0 1 11 12 0 1 0 0 1 0 12 13 0 1 0 0 1 1 13 14 0 1 0 1 0 0 14 15 0 1 0 1 0 1 15 16 0 1 0 1 1 0 16 17 0 1 0 1 1 1 17 18 0 1 1 0 0 0 18 19 0 1 1 0 0 1 19 20 1 0 0 0 0 0 20 21 1 0 0 0 0 1 2
+8 1 +8 1 3 3 ) The fault finding charts listed below are intended to be used in conjunction with the circuit diagrams and other PCB information found in Section 7, and with the circuit descriptions and block diagrams found in Section 2. Section Title Page 5.10.1 Radio Won’t Switch On 5.21 5.10.2 Radio Won’t Program 5.22 5.10.3 Synthesiser Faults 5.23 5.10.4 Receiver Front End Faults 5.24 5.10.5 Receiver IF Faults 5.25 5.10.
+8 18 +8 B D 7 # * % * & .' * & /0 1 2+ : ( ; & .' /0 < 0 < 0 &=2 & ' /0 $ 0 2 , .+ ) 4 * & .' , 3+ $ 5 $ ! & .' , . 7 + & .' )0 * & .
+8 +8 18 B D ! " # & *6'67' *6*6 *6=B *6C6 . !9' & 7 50.& & 1 : > !9' !9* & 7 5 0.& & 1 $% "! & '( ') *+ * )!,.
+8 18 +8 3 * ) $ * #F $ ! ) ) * * ) -./ $ 1 -/230 -///4-// 5/65 7 -///42// 8568. -///45// 8568. 7 -///4.
+8 " +8 18" # 3 ' 3 4 5 . " 5 ? @ @ . '*6; . 8'6' C ) 5 ) ?F 8'6* ? 4 > & 8'6= > E'*' ; 5 .& & .
+8 18+ 1 +8 + # $3 3 ! 2 $ % &! ' ( " # # ' 2 ) %* / " &! 0) % %" 1 ) %* " % %" 2 ) %* #+# +, 1 2 ) %* +, 1 ! " &! ) %* ) %* &) .
+8 - +8 18- # 3 > % @ A : 1 :; " *<= #9*<= *<=# >" &) 7 ' 1 2 ) %* ?" % 7 . @ ( &! 0) > / &) 1 2 ) %* % % / &) ( $ % / B" % / $ 9- .
+8 18. A ! * +8 . # 3 + , 2 2 3 $ 1 1 ' $ $ , / * 0 ' $ , - . / 0 ' 3 2 ( % 4 ( $ & / '* % % .
+8 / +8 18/ 3 , 7 7 3 , % ! 3 % , ( ) " *+ # % " , - .
) " G G 4 G 9 G 8 G & $! @ ' ≥ # 5 ≥ # 5 4 ≥ # 5 9 G 8 G ≥ -# 5 1 & $! @ % % ### ≥ 5 ≥ 5 4 ≥ 95 9 G 8 G 6 " # 1 & $! @ / ' ### ≥ # 5 ≥ # 5 4 ≥ 4# 5 9 G 8 G ≥ 5 1 & $! 9 + " B" % ' % % % @ .
+8 1 +8 180 7 ) 3 ) & ' " * ! % & $ " # $ " " " # ' (' +%* , -* " ! " # ** ' **,' * .
+8 18 1 ! ! % 2 % = 2 2 > % ! : 0 * 9 8 " , 4 7 6' ; 7 & < % = " 4 7 7' 2 %% , 4 " ; 7 5< 4 37 5 : % ' 4 37 5 37 7 : % ' 3 ) %" ; & B &6B :< 4 7 8' 4 35 &6' 4 && &' +8 /
+8 +8 18 9 B D !#( ! ) ) & " # $ % ! ! " ' $ 4 (/*+@ % 9' % 9' ./*+@ , #' (.
! - -8 4 ! 5 This Section details procedures for tuning and adjustment of T2000 series II radios. This is normally only required during product manufacture or after major servicing. The following topics are covered in this Section: Section Title Page 6.1 Tuning Precautions 6.2 6.2 Tuning & Adjustment Points 6.3 6.3 Trunked Radios 6.5 6.4 Transmitter Adjustments 6.
-8 ! -8 # Refer to Section 4.1 for a list of test equipment required and a suggested test set-up. The following precautions must be observed when carrying out the alignment procedures in this Section. • The microprocessor shield must remain in place throughout the alignment procedure, with its 3 retaining screws torqued down to 8in.lbf (0.9Nm).
! -8 -8 4 ! 5 The following table lists tuning and adjustment points, and Figure 6.1 shows their position on the RF and TCXO/Tx audio PCBs. The PCB layouts in Section 7 have all relevant logic PCB test and adjustment points marked.
-8" ! # ! > 2 ( ( = 2) () ()2
! -8 -8+ 9 The ‘test’ facility enables T2000 trunked radios to emulate a multichannel radio, using the frequencies reserved for trunking. For a description of how to put the radio in test mode, refer to Section 5.8 “Trunked Radios: Test Mode”. Once the radio is in test mode, tuning and adjustment can be carried out as described in Section 6.4 and Section 6.5.
-8- ! -8"8 );* ! Close the PTT switch and monitor the transmit frequency with a frequency counter. Adjust RV923 on the TCXO/Tx audio PCB for a channel frequency within ±100Hz at ambient temperature. -8"8 ! 5 DC isolate the audio generator from TSP901 using a capacitor (10µF is sufficient). Set the audio generator to 7kHz and inject the audio into the dual point modulation input TSP901 on the TCXO/Tx audio PCB.
! -8"8" -8. ) ) ! 5 The following instructions apply only to those radios with CTCSS activated and must be carried out before any further modulation adjustment can proceed. Refer to the T2000 Programming Manual for the CTCSS channel programming instructions. The frequency range of the CTCSS tone is 67 to 250.3Hz. Switch to any channel with CTCSS activated. Close the PTT switch.
-8/ ! -8"8. # This is normally preset at 60% of voice deviation. If adjustment is needed, fit #RV508 (refer to Section 7 for a component description) to the logic PCB, and proceed as follows. 2 Adjust #RV508 for ±3kHz (±2.4kHz) [±1.5kHz] deviation reading on the modulation meter. Check to ensure that no limiting occurs in IC901. -8"8/ 33 E ! 5 > 9 -8"8/8 1 ; * ? Enter test mode (refer to Section 5.
! -8+ -80 # ! 5 In this Section, deviation settings are given first for wide band, followed by settings for medium band in brackets ( ) and settings for narrow band in square brackets [ ]. -8+8 3 ! Set up the test equipment as shown in Section 4, and select the highest possible frequency in the operating band. Set the signal generator to the required receive frequency with modulation set for ±3kHz (±2.4kHz) [±1.
-8 1 ! -8+8 $ ) If required, the mute setting can be adjusted internally as follows. Align the receiver, as described in Section 6.5.1. Adjust RV153 fully clockwise. Set the signal generator to the required receive frequency. Set the modulation for ±3kHz (±2.4kHz) [±1.5kHz] deviation at 1kHz AF. Adjust the signal generator output for 11dB sinad. Adjust RV153 so that the radio mutes then turn RV153 until the mute gate just opens.
