Technisonic TDFM-136 Digital VHF/FM Transceiver, Model TDFM-136 User Manual D MYFILES work on PRINT TDFM136 opinstall fcc

Technisonic Industries Limited Digital VHF/FM Transceiver, Model TDFM-136 D MYFILES work on PRINT TDFM136 opinstall fcc

Instruction Manual

VHF/FM DIGITALAIRBORNE TRANSCEIVERMODEL TDFM-136Installation and Operating InstructionsTil Document No.99RE255Rev. n/cIssue n/cDECEMBER 1999Technisonic Industries Limited
250 Watline Avenue, Mississauga, Ontario L4Z 1P4 Tel:(905)890-2113 Fax:(905)890-53383840 East Robinson Road, Suite 214, Amherst, New York 14228 Tel:(716)691-0669CAUTIONThis unit contains static sensitive devices. Wear a grounded wrist strap and/or conductive gloveswhen handling printed circuit boards.This device complies with Part 15 of the FCC Rules. Operation is subject to the following twoconditions: (1) this device may not cause harmful interference and (2) this device must accept anyinterference received, including interference that may cause undesired operation.NOTE: This equipment has been tested and found to comply with the limits fora Class B digital device,pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protectionagainst harmful interference in a residential installation. This equipment generates, uses, and canradiate radio frequency energy and, if not installed and used in accordance with the instructionmanual, may cause harmful interference to radio communications. However, there is no guaranteethat interference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipment offand on, the user is encouraged to try to correct the interference by one or more of the followingmeasures:SReorient or relocate the receiving antennaSIncrease the separation between the equipment and receiverSConnect the equipment into an outlet or circuit different from that to which the receiver isconnected.SConsult the dealer or an experienced radio/TV technician for help.WARRANTY INFORMATIONThe Model TDFM-136, VHF/FM Digital Transceiver is under warranty for one year from date ofpurchase. Failed units caused by defective parts, or workmanship should be returned to:Technisonic Industries Limited Technisonic Industries Limited250 Watline Avenue 3840 E. Robinson Road, Suite 214Mississauga, Amherst,Ontario L4Z 1P4 New York 14228Tel: (905) 890-2113 Fax: (905) 890-5338 Tel: (716) 691-0669
A PageSummary of DO-160C Environmental Testing for Technisonic Model TDFM-136, VHF DigitalTransceiverConditions Section Description of Conducted TestsTemperature and Altitude 4.0 Equipment tested to categories B2 andD1.Vibration 8.0 Equipment is tested without shockmounts to categories B, M and N.Magnetic Effect 15.0 Equipment is class Z.Power Input 16.0 Equipment tested to category B.Voltage Spike 17.0 Equipment tested to category B.RF Emission 21.0 Equipment tested to category Z.
1-1B pageSECTION 1GENERAL DESCRIPTION1.1 INTRODUCTIONThis publication provides operating and installation information on the TDFM-136, DigitalTransceiver manufactured by Technisonic Industries Limited. The TDFM-136 is Project 25(P25), Phase 1 compliant. The unit offers digital or conventional analog FM communicationsover an extended frequency range with selectable channel spacing and is intended for use (inthe U.S.) only by government agencies or contractors thereto, who have obtained licensingfor operation in the 136-150 MHz portion of the band. If the TDFM-136 transceiver is usedin CANADA, operation is restricted to the following sub bands: 138-144, 148-148.99,149.005-150.005 and 150.05-174 MHz. Furthermore the frequency agile transceiver isrestricted to airborne use must not be operated as a base station in Canada.1.2 DESCRIPTIONThe TDFM-136, Transceiver is a frequency agile, fully synthesized airborne transceivercapable of operating in the 136.000 MHz to 174.000 MHz frequency range in 2.5 kHzincrements with either 25 kHz analog, 12.5 kHz analog channel spacing and P25, 12.5 kHzdigital modulation on a channel by channel basis. The Transceiver can operate withoutrestriction on any split frequency pair in the band and also incorporates a two channelsynthesized guard receiver.The TDFM-136 Transceiver provides 150 operator accessible memory positions, each of whichis capable of storing a transmit frequency, receive frequency, transmit frequency CTCSS toneor DPL code, receive frequency CTCSS tone or DPL code, an alphanumeric identifier for eachchannel and in the TDFM-136, wideband (25 kHz analog) or narrowband (12.5 kHz analog)channel spacing assignment. The P25 mode (12.5 kHz digital) channels include both NAC andTalk Group capability.Operating frequency and other related data are presented on a 48 character, two line LEDmatrix display. Data entry and function control are performed via a 12 button keypad. Presetchannels may also be scrolled and scanned through keypad function activation.1.3 PURPOSE OF EQUIPMENTThe TDFM-136, Digital VHF/FM Transceiver is designed to provide secondary airbornecommunications to facilitate operations which are typically performed in a low altitudeenvironment. The transmitter section of this unit has a minimum of 8 watts and does notexceed 10 watts output power, which may be reduced by a front panel switch to 1 watt, inorder to reduce interference to land based systems.1.4 MODEL VARIATIONThere are four variations of the Model TDFM-136 Transceiver. All units offer identical featuresand performance except for the following differences:TDFM-136, P/N 981087-1 GREEN display and 28 Volt back lighting.TDFM-136, P/N 981087-1 (5V) GREEN display and 5 Volt back lighting.TDFM-136, P/N 981087-2 RED display and 28 Volt back ligting.
1-2TDFM-136, P/N 981087-2 (5V) RED display and 5 Volt back lighting.Both P/N's 981087-1 and 981087-2 are always provided with 28 Volt back lighting unless aspecific request is made for 5 Volt AC operation. 1.5 TECHNICAL CHARACTERISTICSSpecification CharacteristicGENERALModel Designation: TDFM-136Frequency Range: 136.000 to 174.000 MHzOperating Modes: P25 CAI and conventional analog12.5/25 kHz conventional analog12 KBPS FSK, 9.6 KBPS C4FMChannel Spacing: 25 or 12.5 kHz Physical Dimensions (including heatsink): Approx. 8.0" X 3.0" X 5.75"Weight: Approx. 3.5 Lbs (1.6 Kg)Mounting: Panel Mount via Dzus fastnersOperating Temperature Range: -45EC to +70ECPower Requirement:Voltage: 28.0 Vdc, ± 15%Current: Receive - 0.7 A Max.1 Watt Transmit - 1.3 A Max.8-10 Watt Transmit - 2.0 A Max.Frequency Selection: 150 memories programmed with:a) Tx Frequency/Rx Frequencyb) Tx/Rx CTCSS tone or DPL codec) 9 character alpha numeric titleGuard Receiver: 2 channels programmed with:a) Tx Frequency/Rx Frequencyb) Tx CTCSS tone or DPL codec) 9 character alpha numeric titleCTCSS squelch/encoder: All CTCSS tones availableDPL digital squelch/encoder: All standard DPL codesDTMF encoder: All standard DTMF tonesAudio Output: 0.5 Watts into 600 ohmsSpeaker Output: 2.5 Watts min. into 4 ohmsBack Lighting: 28 Volts (standard) or 5 Volts (specify)
1-3Display Colour: Green (standard) orRed (specify)NVG OptionalDPL is a trademark of Motorola Corporation1.5 TECHNICAL CHARACTERISTICS (continued)MAIN RECEIVERSensitivity at 12 dB SINAD -116dBmAdjacent Channel Selectivity -60dB (25 or 12.5 KHz)Spurious Attenuation -70 dBThird Order Intermodulation -70 dBImage Attenuation -80 dBFM Acceptance ± 6 KHzHum and Noise Better than 45dBAudio Distortion less than 5%Antenna Conducted Emission less than -57dBmGUARD RECEIVERAll specifications identical to main receiver.TRANSMITTERRF Power Output Lo -100mW to 1W (internal adjustment) or hi-power; 10 watts.Output Impedance 50 ohmsMaximum Deviation ±5 KHz (25 KHz mode)(In narrowband mode) ±2.5 KHz (12.5KHz mode)Spurious Attenuation -90 dB below carrier levelFrequency Stability ± 2.5 ppmMicrophone Circuit Carbon or equivalentSidetone Output 0.5W (max) into 600S Harmonic Attenuation -65 dB below carrier levelFM Hum And Noise -40 dB
2-1Audio Input 50 mV at 2.5 KHz into 200 S input circuit for ±3.5KHz deviation, adjst. Audio Distortion Less than 5%SECTION 2OPERATING INSTRUCTIONS2.1 OPERATING FEATURESThe Technisonic TDFM-136 airborne FM transceiver is visually similar to the industry standard TFM-138, a two line by 24 character display is centered at the top of the unit, just below the display aresix user controls on the left and a 12 key keypad on the right (refer to Figure 2-1). The TDFM-136support the following features:1. 150 memory positions which can each be programmed with a transmit and receivefrequency with 25 or 12.5 kHz analog channel spacing, Tx/Rx CTCSS tones or DPLcodes and a 9-character alphanumeric title. Or the memory positions can beprogrammed to P25 Digital mode (12.5 kHz) with or without a P25 Talkgroup.2. 2 guard channels which can each be programmed with a Rx frequency with 25 or 12.5kHz channel spacing, CTCSS Tx tone or DPL code and a 9-character alphanumeric title.Or either guard channel can be programmed to P25 Digital mode (12.5 kHz) with orwithout a P25 Talkgroup.3. Scanning of programmed memories with selective memory scanning, in 5 scan lists.4. Priority scan of memory channel 1, if desired.5. Direct frequency entry mode.6. Receive frequency simplex function.7. Switchable RF output power between 1 watt and 8-10 watts.8. Lockout of keyboard to prevent inadvertent entries.9. Variable frequency mode to manually scan up and down in 2.5 kHz steps.10. LED display variable dimming mode.11. Selectable 90 second Tx time out feature.12. Quick download of any of the 150 memory positions to the guard memories. 13. PC Memory Upload or download capability.2.2 OPERATOR CONTROLSThe user controls comprise a main volume control – with integrated on/off switch - a guard volume control,a squelch defeat button, a MAIN/GD selection switch, a GD1/GD2 selection switch, and a high/low powerswitch. The keypad layout is a 3 by 4 matrix, the layout being similar to a telephone keypad, though theoptions are arranged differently.
2-2
2-3FIGURE 2-1 Operator's Switches and Controls - TDFM-1362.3 DISPLAY INFORMATIONThe display is divided into two (2) lines, the upper line displays information pertaining to the MAIN channel, thelower line displays information about the GUARD channel. The information displayed is similar for both the MAINand GUARD and is formatted out as follows: (refer to figure 2-1).The first three characters of the display indicate the CHANNEL selected, for MAIN the allowable values are 001to 250, for GUARD only GD1 or GD2 can be displayed.The fourth character indicates the SCAN list status of the channel, this is true for the MAIN channel only. If theselected channel is included in a scan list, then the scan list number (1-5) will be displayed in subscript.The next nine (9) characters are spaces for a text DESCRIPTION of the channel.The next character indicates the operating MODE of the radio as follows: lower case 'w' indicates analog wide modelower case 'n' indicates analog narrow modeupper case 'D' indicates project 25 digital operation.The next eight (8) characters indicate the channel frequency in MHz. The final two (2) characters indicate theSQUELCH mode and operation as follows:For Receive OperationRx indicates no squelch mode has been chosenRt indicates that CTCSS tones are being usedRc indicates that DCS codes are being usedRg indicates that project 25 TALK GROUPS are being usedRn indicates that NOISE Squelch is being used.For Transmit OperationTx indicates no squelch mode has been chosenTt indicates that CTCSS tones are being usedTc indicates that DCS codes are being usedTg indicates that project 25 TALK GROUPS are being usedthere is no noise squelch mode for transmit!2.4 BASIC RADIO OPERATIONUpon turning on the radio, after the boot sequence is finished the operator sees a two line display the top line ofwhich presents the operating parameters of the main channel, the bottom line of which presents the operatingparameters of the chosen guard channel.The operator can receive signals from two (2) sources simultaneously: the selected MAIN receive (Rx) frequencyand the selected GUARD Rx frequency.The operator may transmit on one (1) frequency at a time, the transmit (Tx) frequency is determined by the positionof the MN/GD switch. If set to ‘MN’ then the unit will transmit on the Tx frequency of the selected MAIN channel.If the MN/GD switch is set to ‘GD’ then the unit will transmit on the Tx frequency of the selected GUARD channel.The display will alter – on the appropriate line - to display the Tx frequency and squelch mode when the userpresses the press-to-talk (PTT) switch.The operator selects the guard channel used via the front panel GD1/GD2 switch. Transmit occurs at a power levelas determined by the position of the HI/LO power switch: HI is 10 watts, LO is 1 watt. The user may cause the radio to defeat the squelch on both selected MAIN and GUARD channels by pressing –
2-4and holding – the SQUELCH button. Upon release, the saved squelch parameters will be restored to the respectivechannels.2.5 OPERATOR COMMANDS - OVERVIEWThe operator may affect the operation of the radio parameters by pressing the associated key on the keypad. Theparameters that may be affected in this manner are shown in the table below.Table 2-1 TDFM-136 Command MatrixKey operator direct – L1 operator programming– L2 maintenance – L31select CHANNEL program CHANNEL select boot CHANNEL2display – brighter edit chan DESCRIPTION PC upload3edit chan MODE LOCK keypad RF Alignment4chan scroll down fast GD prog fast GD prog E/D5edit chan SCAN scan ON/OFF scan E/D6chan scroll up PTT timer E/D PTT timer set7edit chan FREQUENCY FREQUENCY scroll reserved8display – dimmer FREQ split/Rx simplex PC download9edit chan SQUELCH reserved terminal mode0go to level L2 go to level L3 reservedENTER save channel reserved reservedESC go to security - m go to previous level go to previous levelThe commands are divided into levels: level one is a direct entry level, commands in this level are selecteddirectly by pressing a key. Level 2 commands are accessed by first pressing the ‘PROG’ (0) key. Level 3commands allow personnel to maintain and configure the radio. To avoid accidental activation, thesecommands are accessed by pressing the ‘ESC’ key followed by: ‘0’, ‘0’, ‘0’, ‘ENTER’.2.6 USING OPERATOR DIRECT COMMANDS (Level 1)1 (CHAN) - Select the Operating ChannelThis command allows the user to select the MAIN channel that the radio is operating on. Upon selecting thiscommand the cursor will appear at the first digit in the channel number, select a number from 001 to 250.‘ENTER’ – accepts this entry if valid (programmed) and will return standby condition. If thecursor remains then this channel number is not valid or there is no informationprogrammed for the channel.‘ESC’ - abandons the command and returns to the standby condition.2 (UP ARROW) - Increased Display BrightnessPress and hold the up arrow (2) key to increase the brightness of the LED display, it stops at maximum.3 (MODE) - Edit Channel Operating ModeThis command will edit the Operating MODE of the selected channel; both MAIN and GUARD channels maybe edited and the channel to be edited is determined by the position of the MN/GD switch and the G1/G2switch.
2-52.6 USING OPERATOR DIRECT COMMANDS (Level 1) - continuedUpon selecting this command the cursor will appear at the MODE position, the forward arrow (6) key allows theuser to scroll through the available modes one at a time. see the table below.Table 2.2 Operating ModesChannel Operating Mode IndicatorAnalog Wide (25 kHz) ‘w’Analog Narrow (12.5 kHz) ‘n’Digital (12.5 kHz) ‘D’‘ENTER’ – accepts this entry and returns.‘ESC’ - abandons the entry and returns.4 (BACK ARROW) - Scroll Down the Channel ListThis command will scroll DOWN through the programmed channels until reaching the lowest channelprogrammed, it will then wrap around and restart from the top.5 (SCAN) - Edit Channel Scan ListThis command will select the SCAN LIST - if any - that the selected channel is included in. The channel maybe included in any one of the five (5) scan lists that are supported.numbers 0-5 – select the Scan List (0 for none)‘ENTER’ – accepts this entry and returns.‘ESC’ - abandons the entry and returns.6 (FORWARD ARROW) - Scroll Up the Channel ListUse the forward arrow This command will scroll UP through the programmed channels until reaching thehighest channel programmed, it will then wrap around and restart from the bottom.7 (FREQ) - Edit Channel Operating FrequencyThis command will edit the Operating Frequency of the selected channel; both MAIN and GUARDchannels may be edited and the channel to be edited is determined by the position of the MN/GD switch andthe G1/G2 switch.8 (DOWN ARROW) - Decreased Display BrightnessPress and hold the down arrow (8) key to decrease the brightness of the LED display, it stops at minimum.9 (SQL) - Edit Channel Squelch ModeThis command will edit the Squelch Parameters of the selected channel; both MAIN and GUARD channelsmay be edited and the channel to be edited is determined by the position of the MN/GD switch and the G1/G2switch.For the receiver select a Squelch mode6 (forward arrow) – scroll through available Squelch Modes.‘ENTER’ – accepts this entry.‘ESC’ - abandons the entry.
2-62.6 USING OPERATOR DIRECT COMMANDS (Level 1) - continuedNOTE: Squelch modes available will depend on operating mode chosen. ie. analog modes will not offer P25talkgroup as an option.Table 2.3 Receive and Transmit Squelch ModesSquelch Mode Receive Transmit carrier Rx Tx noise Rn - (Tx) CTCSS Tones Rt Tt DCS Codes Rc Tc P25 Talkgroup Rg TgEnter a key number pertaining to the Squelch mode chosen, refer to the tables below.‘ENTER’ – accepts this entry.‘ESC’ - abandons the entry.Once the Rx Squelch Mode has been chosen, the process is repeated for the Tx Squelch modes.Table 2.4 Noise LevelLevel Key Number0 01 12 23 34 45 56 67 78 89 910 1011 1112 1213 1314 1415 1516 16
2-7Table 2.5 CTCSS Tones Table 2.6 DCS CodesTone Key Number Code Key Number Code Key Number 67.0 1 23 1 315 43 69.3 2 25 2 331 44 71.9 3 26 3 343 45 74.4 4 31 4 346 46 77.0 5 32 5 351 47 79.7 6 43 6 364 48 82.5 7 47 7 365 49 85.4 8 51 8 371 50 88.5 9 54 9 411 51 91.5 10 65 10 412 52 94.8 11 71 11 413 53 97.4 12 72 12 423 54 100.0 13 73 13 431 55 103.5 14 74 14 432 56 107.2 15 114 15 445 57 110.9 16 115 16 464 58 114.8 17 116 17 465 59 118.8 18 125 18 466 60 123.0 19 131 19 503 61 127.3 20 132 20 506 62 131.8 21 134 21 516 63 136.5 22 143 22 532 64 141.3 23 152 23 546 65 146.2 24 155 24 565 66 151.4 25 156 25 606 67 156.7 26 162 26 612 68 162.2 27 165 27 624 69 167.9 28 172 28 627 70 173.8 29 174 29 631 71 179.9 30 205 30 632 72 186.2 31 223 31 654 73 192.8 32 226 32 662 74 203.5 33 243 33 664 75 206.5 40 244 34 703 76 210.7 34 245 35 712 77 218.1 35 251 36 723 78 225.7 36 261 37 731 79 229.1 41 263 38 732 80 233.6 37 265 39 734 81 241.8 38 271 40 743 82 250.3 39 306 41 754 83 254.8 42 311 42
2-82.6 USING OPERATOR DIRECT COMMANDS (Level 1) - continued0 (PROG) - Menu Level UpPressing this key selects the next Higher Menu Level, the Menu Level is indicated in the 4 character positionthon the lower row of the display. The Menu Level is indicated in subscript and is as follows:Table 2.7 Keypad Menu LevelLevel Display1 direct blank2 programming 23 maintenance 3Upon pressing this key, the radio will remain in the new Command Level for 5 seconds, if there is no furtheruser input within this time frame then the radio will revert to the Direct Command Level. The Direct CommandLevel (level 1) is the normal operating mode for the radio.NOTE: The Operator Direct Command Level (level 1) is indicated by a blank space, this is the normaloperating mode of the radio.‘ENTER’ – save changes to selected channel if anyIf there have been changes made to the current operating channel, pressing ‘ENTER’ will allow the user tosave these changes to the channel memory.‘ESC’ – Menu Level DownPressing this key selects the next Lower Menu Level, the Menu Level is indicated in the 4 character positionthon the lower row of the display. The Menu Level is indicated in subscript and is as given in the table in ‘0’above.
2-92.7 USING OPERATOR PROGRAMMING COMMANDS (Level 2)Access the Operator Programming Command Level (level 2) by pressing the ‘PROG’ key from theOperator Direct Command Level (level1) once. The Menu Level is indicated in the 4 character position onththe lower row of the display, this will indicate a subscript ‘2’. Having selected the Operator Programming Command Level, the keys provide a new set of functions for theoperator as follows:1 - Program Channel InformationThis command allows the user to program all the information for an operating channel. If the selected channelcontains valid information then that information will be displayed.The channel to be programmed depends on the position of the front panel switches: If the MN/GD switch is inthe ‘MN’ position then the Main channel will be edited, if it is in the ‘GD’ position then the Guard channel will beedited depending on the position of the G1/G2 switch.For each step below, if there is valid data in the field:Pressing the ‘ENTER’ key will accept the entered value and proceed to the next step.Pressing the ‘ESC’ key will proceed to the next step without accepting the entered value.5Enter a Channel number (001 to 250), press ‘ENTER’.6Enter a Scan List for the channel if desired, press ‘ENTER’.7Enter a Text Description for the channel (up to 9 characters)Up/Down arrow keys scroll through the alphabet, right/left arrow keys allow editing, when done,press ‘ENTER’.8Select the Operating Mode, scroll through options using the forward arrow (6), press ‘ENTER’.9Select a Rx Frequency in the range 136.0000 to 174.0000, press ‘ENTER’.10 Select a Rx Squelch Mode, choose TONES, CODES etc as required, press ‘ENTER’. Notethat the available Squelch modes will be affected by the selected Operating Mode, that is, ifanalog narrow Operating Mode was selected then the user cannot select P25 talkgroup as aSquelch Mode.11 repeat 5 & 6 for Tx.2 – Edit Channel DescriptionThis command allows the user to edit the text description for the selected channel. The arrow keys allowediting as follows:2 (up arrow) – scroll up through the alphabet8 (down arrow) – scroll down through the alphabet4 (back arrow) – move cursor backwards6 (forward arrow) – move cursor forwards‘ENTER’ – accepts this entry.‘ESC’ - abandons the entry.3 – Lock Keypad This command locks the keypad to prevent accidental change to parameters of the radio unbeknownst to theoperator. This will disable all keyboard functions (except keyboard unlock). To unlock the keyboard, press andhold the ‘ESC’ key until the display indicates "UNLOCK" (about 2 seconds).2.7 USING OPERATOR PROGRAMMING COMMANDS (Level 2) - continued
2-104 – Fast Guard Program This command transfers the displayed main memory positions’ parameters to the Guard Memory positionaccording to the position of the G1/G2 front panel switch.The selected Guard channel will now contain the information from the selected Main channel memory.This feature may be disabled via Maintenance Command (Level 3) ‘4’.‘ENTER’ – accepts this transfer.‘ESC’ - abandons the transfer.5 – Scan Mode: ON/OFFThis command allows the user to start and stop the Scan operation. Select Scan and follow the command key with a number from 0 to 5, this will start scanning using the selectedscan list, if 0 was selected then scanning will be terminated. NOTE: Scan operation automates the process of selecting pre-programmed channels that have been saved tomemory, it DOES NOT sweep the frequency band!6 – PTT Timer: Enable/DisableThis command toggles the operation of the PTT timer. When ENABLED, the timer will stop the unit fromtransmitting after the programmed time-out period, this protects against accidental PTT lockup. The user canre-start the timer by releasing PTT for a moment. !CAUTION! When DISABLED the PTT timer will not protect against continuous transmission.The default is: PTT Timer ENABLED.7 – Frequency: Scroll ModeThis command places the unit into frequency scroll mode, when in scroll mode the frequency may be changedas follows:2 (up arrow) – scroll frequency up in 2.5 kHz. steps.8 (down arrow) – scroll frequency down in 2.5 kHz. steps.4 (back arrow) – scroll frequency down in 1 MHz. steps.6 (forward arrow) – scroll frequency up in 1 MHz. steps.‘ENTER’ – accepts this entry.‘ESC’ - abandons the entry.8 – Rx/Tx Simplex/Split Pair OperationThis command allows you to quickly change the transmit frequency, when operating on a split pair(repeater/semi-duplex mode), to the receive frequency to allow direct communications. ie/ If you are transmitting on 152.000 MHz and receiving 152.555 MHz, press 8 (in command level 2) totransmit on 152.555 MHz. To return to the split pair condition, you must recall the memory channel again. ‘ENTER’ – accepts this entry.‘ESC’ - abandons the command and returns to the normal operating mode2.7 USING OPERATOR PROGRAMMING COMMANDS (Level 2) - continued
2-119 – not currently used - reserved0 (PROG) - Menu Level UpPressing this key selects the next Higher Menu Level, the Menu Level is indicated in the 4 character positionthon the lower row of the display. The Menu Level is indicated in subscript and is as follows:Table 2.8 Keypad Menu LevelLevel Display1 direct blank2 programming 23 maintenance 3Upon pressing this key, the radio will remain in the new Command Level for 5 seconds, if there is no furtheruser input within this time frame then the radio will revert to the Direct Command Level. The Direct CommandLevel (level 1) is the normal operating mode for the radio.‘ENTER’ – n/a‘ESC’ – back one Menu Level – (to operator direct menu level)
2-122.8 USING MAINTENANCE COMMANDS (Level 3)The Maintenance Command Level is available to allow configuration and testing of the radio in a bench testenvironment. This command level may be disabled by removing the jumper Jn on the MCU board.NOTE: this command level should NOT BE ENABLED when the radio is installed in the airframe.This command level is for bench operation only and as such does not preserve the Normal Operating displaycharacteristics, that is: the Main and Guard displays are replaced by suitable command prompt information.1 – Channel: Select Power-On ChannelThis command toggles through the available power-on channel defaults. This allows selection of which channelwill be selected when the unit is turned on. The available choices are: the last used channel or the lastprogrammed channel.The default is: last used channel.2 – PC uploadUpload data from the radio to a PC. The unit must be connected to a PC running Windows 95, 98, or NT 4.0 and the TiL Radio Communications Software package.3 – not currently used - reserved4 – Fast Guard Program: Enable/DisableThis command allows the maintenance personnel to Enable or Disable the Fast Guard Program capability(Level 2 command 4). The default selection is: DISABLED.5 – Scan Operation: Enable/DisableThis command allows the maintenance personnel to Enable or Disable the Scan function (Level 2, command5). When Enabled, the Scan function operates normally, when Disabled, the Scan function cannot be started.The default selection is: ENABLED.6 – PTT Timer: Set TimeThe PTT timer duration may be set using this command: select 0 – 9, this number is multiplied by 10 secondsto yield a timer duration between 0 and 90 seconds.Note that selecting 0 effectively disables the radio from transmitting.‘ENTER’ – accepts this entry and returns.‘ESC’ - abandons the entry and returns.7 – not currently used - reserved8 – PC downloadDownload channel data from a PC to radio. The unit must be connected to a PC running Windows 95, 98 or NT4.0 and the TiL Radio Communications Software package.2.8 USING MAINTENANCE COMMANDS (Level 3) - continued
2-139 – Terminal Mode Put the TDFM-136 into Terminal Mode. This is a bench test mode and allows the maintenance personnel tocontrol the radio for testing.‘ESC’ - abandons Terminal Mode and returns.0 – not currently used - reserved‘ENTER’ – not currently used - reserved‘ESC’ – back one Menu Level – (to operator programming menu level)SECTION 3INSTALLATION INSTRUCTIONS
3-13.1 GENERALThis section contains information and instructions for the correct installation of the TDFM-136, VHF/FM Digital Transceiver.Make certain that the correct frequencies are preprogrammed in accordance with the equipment user's valid FCC operator's license, prior to installation.3.2 EQUIPMENT PACKING LOGUnpack the equipment and check for any damage that may have occurred during transit. Save the original shipping container for returns due to damage or warranty claims. Check thateach item on the packing slip has been shipped in the container. Verify that the equipmentdisplay and backlighting configuration are the same as those ordered.3.3 TRANSCEIVER INSTALLATION The TDFM-136 Transceivers are designed to be Dzus mounted and should be installed inconjunction with a IN-150 installation kit. See Figure 3-1 for an outline drawing of the unit withdimensions to facilitate the installation. 3.4 INSTALLATION KIT - CONTENTSThe IN-150 installation kit consists of: 1. One 15 pin Cannon D mating connector (female) complete with crimp pins and hood.2. One BNC antenna mating RF connector (male) and hood.3.5 ANTENNA INSTALLATION Antenna, P/N ATM-150 may be obtained from Technisonic Industries Limited or a suitable equivalent 0dB gain antenna may be utilized with the TDFM-136 transceivers. The antennashould be mounted on the bottom of the aircraft whenever possible and must be located at least20cm (8 inches) from any occupant in the airframe. Consult with instructions provided with theantenna. Connect RF cable from antenna to the back of the TDFM-136 unit by utilizing the BNCmating connector provided in the installation kit.3.6 INSTALLATION - PIN LOCATIONS AND CONNECTIONSThe pin numbers and locations for the 15 pin Cannon D located on the rear of the TDFM-136 digital transceivers are shown below. Pin connections are in provided in TABLE 3-1.Transceiver mounted view of 15 pin connector
3-2FIGURE 3-1 Outline Drawing for Model TDFM-136 Transceiver3.6 INSTALLATION - PIN LOCATIONS AND CONNECTIONS (continued)
3-3 TDFM-136 Transceiver 15-Pin D ConnectionsPin # Description1600 Ohm Output2Data Output3Panel Lighting (28VDC or 5VAC) 4Memory UP/PC Download Input5Memory Down/PC Download Input6Mic Signal Input7Main Power +28VDC8Main Ground94 ohm Speaker Output10 4 ohm/600 ohm Output Ground11 Data Input12 PC Download Input13 PTT (Ground Keying)14 Main Power +28VDC15 Main GroundTABLE 3-13.7 WIRING INSTRUCTIONSFigure 3-2 shows all required connections and recommended wire sizes for the TDFM-136Transceiver.3.7.1 Main Power +28VDCThe main power +28VDC (±15%) is connected to pins 7 and 14 of the transceiver. Bothpins should be connected. 3.7.2 Main GroundGround connections for the transceiver are made on pins 8 and 15. Both pins should be connected.3.7.3 PTT (Ground Keying)The PTT line is connected to pin 13 and should be floating when the transceiver is in receivemode, and grounded during transmit mode.
3-4Figure 3-2 Wiring Connections for TDFM-136 Transceiver
3-53.7.4 Front Panel Back LightingFront panel back lighting connection should be made on pin 3 of the transceiver. The oppositeend of this lead should be connected to the panel lighting system of the aircraft. Beforeconnecting, verify the required panel lighting voltage (28 VDC or 5VAC) on the transceiverconfiguration control label.3.7.5 Audio Outputs (600 ohms and 4 0hms)The audio output from pin 9 can be used to drive a 4 ohm speaker up to 2.5 watts. Audio output from pin 1 is 600 ohms, 0.5 watts maximum.3.7.6 Audio Output Ground Pin 10 is the ground for both the 4ohm and 600 ohm audio output signals on pins 9 and 1. 3.7.7 Mic Signal InputThe microphone input signal is to be provided on pin 6, utilizing shielded wire with the shieldgrounded to pin 10.3.7.8 Memory Up/Memory DownRemote scrolling through the 150 memory positions can be achieved by providing a ground topins 4 (up) and 5 (down) through a momentary contact cyclic switch.3.7.9 Data InputChannel data may be transferred to and from the unit using RS-232 communications protocol viapins 2 and 11.
3-63.8 TRANSMITTER SIDETONE LEVEL ADJUSTMENT1. Set the transceiver operating frequency to 155.000 MHz and connect an appropriate testreceiver to the RF output connector. Ensure that the output of the transceiver isterminated into a proper dummy load.2. Key the transmitter and input a -10 dBm (0.25 VRMS), 1 KHz audio signal into the microphone input.3. Select the sidetone adjust command and then adjust the sidetone level using the guardvolume control to produce a +3.0 dBm (1.0 VRMS) 600 ohm audio output.3.9 MAIN AND GUARD SQUELCH ADJUSTMENTThe squelch on both the main and guard receivers is factory set to open at approximately 0.5 microvolts. This adjustment can be made or altered to suit local conditions as follows:1. Set the main receiver of the transceiver to 155.000 Mhz. Connect a signal generator tothe antenna input of the transceiver.2. Set the signal generator to produce a ±3 KHz deviation with a 1 KHz tone on 156.000MHz. Increase the signal generator RF level from 0.1 uV until the squelch indicator LEDis on. Verify the receiver SINAD ratio is between 12 and 14 dB.3. If not, re-adjust main receiver squelch via the main receiver squelch software command.4. Repeat the above procedure to adjust the guard receiver squelch setting using guardreceiver squelch adjustment software command.

Navigation menu