SMX-4150 OPERATOR`S MANUAL
Contents
1. Do not adjust the squelch control while other parties are using the channel NOTE If your SMX 4150 is equipped with tone or digital coded squelch options depress the Monitor Button LED 2 to enable the option the CALL LED will no longer be illuminated NOTE If your SMX 4150 is equipped with SELCALL refer to additional instructions for correct operation TRANSMITTING 1 Turn the radio on and select the desired frequency by pressing either of the channel select buttons until the channel number is visible in the display 2 Pick up the microphone and listen briefly to make sure that no one else is using the channel or with the microphone On Hook depress the Monitor Button LED 2 to monitor the programmed channel for activity The Monitor LED 2 should be illuminated and the BUSY LED should be off 3 Press the PTT bar on the microphone and from a distance of 1 2 to 2 inches speak into it directly in a normal tone of voice The TX LED will light while pressing the PTT 4 Release the PTT bar as soon as you have completed the transmission NOTE License requirements normally require that you monitor a frequency for activity before transmitting TRANSMIT TIME OUT TIMER The Transmit Time Out Timer is a dealer programmable option that disables the radio s transmitter if a single transmission i e an uninterrupted depression of the PTT Bar exceeds a predetermined period of time The time out timer minimizes channel occupancy2. and battery drain The radio reverts back to the receive mode even with the PTT Bar being depressed Following the time out period a continuous alert tone is generated that lasts until the PTT is released and the TX LED goes off Another transmission may be initiated immediately after releasing the PTT simply by depressing it again If the PTT is released before the predetermined time out the radio operates as normal reverts to receive mode with no alert tone The range for the time out period is 10 seconds to 990 seconds in 10 second increments TRANSMIT INHIBIT ON BUSY CHANNEL BUSY CHANNEL LOCK OUT If your radio has this option enabled press the PTT Bar while carrier is present Busy LED ON or Busy and Call LEDs ON This will cause all transmitter functions to be disabled including the TX LED and a warning tone to be generated Transmitting will be enabled on a channel only if no carrier is being received Busy LED OFF ERROR MESSAGES During normal operation from turn on to shut off the microprocessor is working From initial self check to channel scan operation it is designed to keep you informed of its operating status If your radio displays Er 01 There is a problem with the EEPROM For example EEPROM not installed or installed incorrectly Er 02 there is a programming problem with the channel data the radio will work but only on correctly programmed channels Er 03 indicates the synthesizer is out o
3. excessive drilling NOTE THIS RADIO IS NOT INTENDED FOR OPERATION IN A POSITIVE GROUND VEHICLE
4. LED e indicates activity with the correct tone or code on the receive channel when GREEN backlight is on CHANNEL DISPLAY e the BLUE GREEN display is easily visible under high ambient light conditions e indicates channel number RADIO ON OFF POWER UP 1 Turn the radio on by rotating the volume control 1 2 turn clockwise 4000 appears in the display for approximately 1 second A power up alert tone is then generated to indicate that the radio has passed a self check of the microprocessor The Monitor Button LED 2 will be illuminated to indicate that you are now in monitor mode all receiver tone options are off disabled until you press the Monitor Button LED 2 and the GREEN backlight goes out 2 The display will change to Channel Ch 01 3 Turn the radio off by rotating the volume control fully counterclockwise RECEIVING A CALL 1 Turn the radio on and select the desired frequency by pressing either of the channel select buttons until the channel number is visible in the display 2 With the Monitor Button LED 2 lit adjust the volume control to a comfortable listening level 3 Rotate the squelch control clockwise to the right until the squelch noise the rushing sound is no longer heard from the speaker and the BUSY LED turns off This setting should keep the receiver quiet when there is no signal present on the channel 4 Depress the Monitor Button LED 2 to extinguish the GREEN backlight NOTE
5. SMX 4150 OPERATOR S MANUAL INTRODUCTION The SMX 4150 series mobile has 16 Channel capability enhanced to 99 with the selcall board fitted with CTCSS and optional DCS signalling systems os NS Change Buttons Channel Display Transmit LED Busy LED Call LED Squelch Control S Facility Push Button Monitor Button On Off Volume Control Auxiliary Speaker Button P Facility Push Button FRONT PANEL CONTROLS SWITCHES AND INDICATORS ON OFF VOLUME CONTROL turns the SMX 4150 on off and adjusts the audio output level SQUELCH CONTROL e silences the radio s receiver when no signal is being received e maximum squelch setting is at full clockwise rotation CHANNEL CHANGE BUTTONS e assigned programmed channels may be selected by pressing either of the channel selector buttons these buttons will scroll you through the programmed channels in your radio S FACILITY PUSH BUTTON e used only on system mobiles P FACILITY PUSH BUTTON e used only on system mobiles AUXILIARY SPEAKER BUTTON e silences internal soeaker and connects the Auxiliary Speaker requires auxiliary option board MONITOR BUTTON e disables tone or digital coded squelch options only in receive mode e controls display intensity TRANSMIT LED indicates transmission when RED backlight is on will flash to indicate the synthesizer is out of lock BUSY LED e indicates activity on receive channel when YELLOW backlight is on CALL
6. f lock or a channel is out of acceptable band it is necessary to re program or re align the radio Er 04 indicates improper antenna connection the microprocessor will shut down the transmitter generate a 3 beep alert tone and blink the TX LED as warnings usually omitted NOTE Should any of these messages appear on your display MAXON recommends that you consult the dealer from whom the unit was purchased so that it can be serviced by a qualified service technician REAR PANEL CONNECTORS A EXTERNAL SPEAKER CONNECTOR A 3 5mm diameter jack is provided for a 4 ohm external speaker The internal speaker is silenced when the external speaker is connected B AUXILIARY SPEAKER CONNECTOR A 3 5mm diameter jack for a 4 ohm auxiliary speaker C ANTENNA CONNECTOR SO 239 type connector Output is 50 ohms and must be connected to a properly installed 50 ohm antenna D DC 13 2 Polarized plug 13 2 volt DC input for NEGATIVE GROUND SYSTEM ONLY GENERAL SAFETY INFORMATION The following precautions are recommended DO NOT operate the transmitter of a mobile radio when someone outside the vehicle is within two feet 0 6 meter of the antenna DO NOT operate the transmitter of any radio unless all RF connectors are secure and any open connectors are properly terminated DO NOT operate this equipment near electrical blasting caps or in an explosive atmosphere All equipment must be properly grounded according to MAXON instal
7. lation instructions for safe operation All equipment should be serviced only by a qualified technician Refer to the appropriate section of the product service manual for additional pertinent safety information MAXON MOBILE INSTALLATION SAFEGUARDS Some electronic fuel injection anti skid breaking systems cruise controls and vehicle alarms may be prone to interference from radio frequency energy or may malfunction due to lack of protection from RF energy If the vehicle contains such equipment consult the dealer or factory and enlist their help in determining whether the electronics equipment in the vehicle will operate properly when the radio is transmitting e Do not install the unit where it would likely cause injury in case of vehicle accident e Mount the unit so that the user can easily see and reach all controls and the microphone e After selecting a location for the radio hold the mounting bracket in place Using the bracket as a template mark the spots where the bracket securing screws will be located with a pencil e Before drilling holes in the vehicle verify that there is nothing that could be damaged or get in the way by drilling and putting screws in this location e Try to get access to the back side of the surface where the bracket is to be mounted and verify that it is safe to use this location e lt is better to use existing passages in the dashboard trunk and floor for the routing of cables thus avoiding
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