Maxon CIC SP7402 UHF LMR User Manual

Maxon CIC Corp. UHF LMR Users Manual

Users Manual

Function Description SP-7402 1/32 Function Description                                2007-08-03
Synthesized Scanning Radio FCC RF EXPOSURE COMPLIANCE REQUIREMENTS FOR OCCUPATIONAL USEONLY The Federal Communications Commission (FCC), with its action in General Docket 93-62, November 7,1997, has adopted a safety standard for human exposure to Radio Frequency (RF) electromagnetic energy emitted by FCC regulated equipment.  Maxon subscribes to the same safety standard for the use of its products. Proper operation of this radio will result in user exposure far below the Occupational Safety and Health Act (OSHA) and Federal Communications Commission limits.     DO NOT transmit for more than 50% of total radio use time (50% duty   cycle). Transmitting more than50% of the time can cause FCC RF   exposure compliance requirements to be exceeded.  This radio is NOT approved for use by the general population in an uncontrolled environment. This radio is restricted to occupational use,   work related operations only where radio operator must have the knowledge to control the user’s exposure conditions for satisfying the higher exposure limit allowed for occupational use.  When transmitting, hold the radio in a vertical position with its microphone   2 inches (5 cm) away from your mouth. The radio is transmitting when the red LED on the front of the radio is illuminated. You can cause the radio to transmit by pressing the PTT bar   on the radio.  These are required operating configurations for meeting FCC RF   exposure compliance. Failure to observe these restrictions mean violation.  .
Safety Information  The Federal Communications Commission (FCC), with its action in General Docket 93-62, March 13, 1997, has adopted a safety standard for human exposure to Radio Frequency (RF) electromagnetic energy emitted by FCC regulated equipment. Maxon subscribes to the same safety standard for   the use of its products. Proper operation of this radio will result in user exposure far below the Occupational Safety and Health Act and Federal Communications Commission limits.  WARNING - DO NOT hold the radio in such a manner that the antenna is next to, or touching, exposed parts of the body, especially the face or eyes, while transmitting.  WARNING - DO NOT allow children to operate transmitter - equipped radio equipment.  CAUTION - DO NOT operate the radio near unshielded electrical blasting caps or in an explosive atmosphere unless it is a type especially designed and qualified for such use.  CAUTION - DO NOT press and hold the transmit switch (P-T-T) when not actually wishing to transmit.  NOTE: This radio operates in FCC regulated frequency bands. All radios must be licensed by the FCC before use. Because this radio contains a transmitter, Federal law prohibits unauthorized use or adjustments of this radio.
Function Description SP-7402 2/32 Table of Contents 1. Panel Description ................................................................................................................ 4 (1) Front Panel................................................................................................................. 4 (2) LCD Display ............................................................................................................... 5 (3) Display Option........................................................................................................... 6 2. Basic Functions................................................................................................................... 7 (1) Power On/Off & Volume Control.............................................................................. 7 (2) Receiving and Transmitting ..................................................................................... 8 (3) User Set Mode ......................................................................................................... 15 3. Emergency Function......................................................................................................... 16 (1) To transmit Emergency Call................................................................................... 16 (2) Effect......................................................................................................................... 16 (3) Emergency ID .......................................................................................................... 17 (4) Formation of the Emergency Call.......................................................................... 17 (5) Emergency Call Options......................................................................................... 17 4. Scan Function.................................................................................................................... 18 (1) Description............................................................................................................... 18 (2) Scan Type................................................................................................................. 18 (3) Nuisance Delete....................................................................................................... 18 (4) Scan List Edit........................................................................................................... 19 (5) Priority Channel / Lookback Channel Setting...................................................... 19 (6) TX Channel on Scan................................................................................................ 19 (7) Scan Operation Diagram ........................................................................................ 20 5. Signaling Function ............................................................................................................ 21 (1) Signaling Type & Transmission............................................................................. 21 (2) Signaling Functions and Receiving ...................................................................... 23 (3) Signaling Operation Example ................................................................................ 26 (4) 5-Tone Table............................................................................................................. 28 6. Other Functions................................................................................................................. 29 (1) Memory Channel ..................................................................................................... 29 (2) Battery Indication.................................................................................................... 29 (3) Key Lock .................................................................................................................. 30 (4) Transceiver Lock..................................................................................................... 30 (5) Compander............................................................................................................... 30 (6) Scramble .................................................................................................................. 30
Function Description SP-7402 3/32 (7) Man Down ................................................................................................................ 31 (8) Lone Worker ............................................................................................................ 31 7. Function List & User Set Mode Function........................................................................ 32
Function Description SP-7402 4/32 1. Panel Description (1) Front Panel         No. Description No. Description 1 Power On/Off, Volume Control S/W 6 Up/Down / Select Button 2 Rotary Selector  7 LED Indicator 3 Emergency Button  8 LCD Display 4 Monitor Button  9 Default Programmable Keys 5 PTT Key   Optional 10-keypad  123 8 4567 9 
Function Description SP-7402 5/32 (2) LCD Display            No. Description  CH, Group, Name, Message etc. Display Digit  Scroll Indicator  RSSI Indicator  Monitor Indicator  VOX On/Off Indicator  Scrambler On/Off Indicator  Compander On/Off Indicator  Bell Indicator  Call Indicator  Key Lock On/Off Indicator  Battery Gauge Display Example)    Ex) Group-Channel Display                      Ex) Channel Display      Ex) Name Text Display                          Ex) Scroll의 예             Priority Channel Indicator  Lookback Channel Indicator
Function Description SP-7402 6/32 (3) Display Option 1) Display Type - Channel Name Display z  Display only Channel Name when this type is selected. z  Display the Group Number for a second when Group is changed. z  Scrolls when the name is more than 7 characters      - Channel Number Display z  Display only Channel Number when this type is selected. z  Display the Group Number for a sec when Group is changed.      -  Group / Channel Number Display z  Display Group & Channel Number when this type is selected.      -  Group / Channel Name Display z  Display Group & Channel Name when this type is selected. z  Display ‘/’ between Group and Channel Name as a descriptor. z  Scrolls when the name is more than 7 characters
Function Description SP-7402 7/32 2. Basic Functions (1) Power On/Off & Volume Control 1) Power On/Off To turn on the radio, rotate the volume knob clockwise beyond detent. To turn off the radio, rotate the volume knob the most counter-clockwise beyond detent.              Ex) Power On    2)  Power On Sequence - Initialization & Self Test Initialization and self test are performed when the radio is turned on.   At this time, if some errors occur, error message shall be displayed.                       Ex) EEPROM Error  -  Power On Beep Generation (Option) Beep sounds out after success of Initialization and Self Test.   (Depends on Beep Option)
Function Description SP-7402 8/32 -  Display Start Logo (Option) Display the Start Logo for a second. If there is no predefined start logo, all digits and icons will be displayed for a second.    Ex1) Start Logo                Ex2) Non Start Logo   - Password Check (Option) Password function is the function that the user who knows the password can use the radio. (Depends on password option) Password can be consisted of 1 to 4 numerical digits. In case of the radio with 10-keypad, 10-keypad can be used to input the password. * Usage of keys for inputting password   : Confirm (Enter)   : Delete (Error Beep out if there is no digit to delete.   : Confirm (Enter)   : Digit Value Change   : Next Digit  : Delete   (2) Receiving and Transmitting 1) Receiving -  Channel & Group Selection z Group Selection ① Rotary Selector Rotary Selector can be used to select each group up to 16.    If blank group is selected, the radio keeps the last used channel status.
Function Description SP-7402 9/32 ② Programmable Key To select the group up or down direction, push the programmed key.  If there are blank groups within the total groups, the blank group is skipped automatically when group is changing.   z Channel Selection ① Rotary Selector Rotary Selector can be used to select channel up to 16.  If blank channel is selected, the radio keeps last used channel status.  ② Programmable Key Push to select the channel up or down direction.  If there are blank channels within the total channels, the blank channel is skipped automatically when channel is changing.      - Busy Busy Status: When receiving a call Amber color LED turns on in busy status.               Ex) LED Display
Function Description SP-7402 10/32  - Correct Call Correct Call Status: When proper CTCSS tone or DCS code is decoded.   Green color LED turns on in correct call status   - Monitor Operating Release squelch and tone option to check whether you can use or not current channel. Mode Description Push Mode  Push and hold the key in short time, to enter to monitor push mode.   Squelch and tone option are released while push and hold the key.   To return to normal mode, release the monitor key.   Hold Mode  Push and hold the key in long time, to enter to monitor hold mode. After a confirm beep, monitor operation is held even if the key is released. To return to normal mode, push and release the monitor key once more.  Display Ex.                            Group – Channel Display                 Channel Display     Monitor On Indicator
Function Description SP-7402 11/32 -  RSSI (Received Signal Strength Indication) This function is to indicate the received signal strength.  Display Ex.   Signal Strength      - Receiving Option z  Squelch Level Control Squelch level is adjustable 1 to 9 step by PC Program or User Set Mode.  z Sub-Audio Tone ① CTCSS The radio has a CTCSS tone squelch function which consists of 38 standard tones and 12 non-standard tones.  No. Freq. No. Freq. No. Freq. No. Freq.1 67.0 14 107.2 27 167.9 40 159.82 71.9 15 110.9 28 173.8 41 165.53 74.4 16 114.8 29 179.9 42 171.34 77.0 17 118.8 30 186.2 43 177.35 79.7 18 123.0 31 192.8 44 183.56 82.5 19 127.3 32 203.5 45 189.97 85.4 20 131.8 33 210.7 46 196.68 88.5 21 136.5 34 218.1 47 199.59 91.5 22 141.3 35 225.7 48 206.510 94.8 23 146.2 36 233.6 49 229.111 97.3 24 151.4 37 241.8 50 254.112 100.0 25 156.7 38  250.3    13 103.5 26 162.2 39  69.4
Function Description SP-7402 12/32 ② DCS (IDCS) The radio also has a digital coded squelch function which consists of 104 codes.    No. Code No. Code No. Code No. Code1  023 27 152 53 311 79 466 2  025 28 155 54 315 80 503 3  026 29 156 55 325 81 506 4  031 30 162 56 331 82 516 5  032 31 165 57 332 83 523 6  036 32 172 58 343 84 526 7  043 33 174 59 346 85 532 8  047 34 205 60 351 86 546 9  051 35 212 61 356 87 565 10 053 36 223 62 364 88 606 11 054 37 225 63 365 89 612 12 065 38 226 64 371 90 624 13 071 39 243 65 411 91 627 14 072 40 244 66 412 92 631 15 073 41 245 67 413 93 632 16 074 42 246 68 423 94 654 17 122 43 251 69 431 95 662 18 114 44 252 70 432 96 664 19 115 45 255 71 445 97 703 20 116 46 261 72 446 98 712 21 125 47 263 73 452 99 723 22 131 48 265 74 454 100 731 23 132 49 266 75 455 101 732 24 134 50 271 76 462 102 734 25 143 51 274 77 464 103 743 26 145 52 306 78 465 104 754  z  Signalling (2-Tone, 5-Tone, DTMF) Î There are three type audio-band tone signaling.   Refer to Signaling section.  z  Tone Squelch Option ①  Tone Squelch 1 (On/Off) All Tone Squelch On/Off (Sub-Audio, 2-Tone, 5-Tone, DTMF)    Display Ex.) Display tone squelch status for a second when the status is changed.
Function Description SP-7402 13/32 ②  Tone Squelch 2 (On/Off) Only audio-band tone squelch(2-Tone, 5-Tone, DTMF Squelch) On/Off    Display Ex.) Display the tone squelch status for a second when the status is changed.  2) Transmitting -  송신방법 z PTT Key Push the PTT (Push To Talk) key to transmit.  z  VOX function (Voice Operated Transmit) This function is to transmit by voice without pressing the PTT key. The radio can transmit by low and high level voice in accordance with VOX level 1 to 4.  - Transmit Option z PTT ID When transmission is starting, PTT ID which consists of DTMF or 5-tone depend on system and signaling option can be transmitted.  z  TX Power High/Low Control Each channel can be capable of programmable output power via PC programmer. Each channel can be programmed high or low transmit power.  z  TOT (Time Out Timer) This function is to prevent continuous transmitting over than specified time that is programmed via PC programmer.  z  BCLO (Busy Channel Lock-Out) This function is to prevent transmitting when current channel is in busy status.
Function Description SP-7402 14/32 z Marked Idle This option allows transmitting when current channel is in correct call status even if BCLO option is applied.  z TX Delay This function is to eliminate the squelch tail on leaving transmission. The radio transmits the turn off code (or tone) and return to receive mode after the PTT key is released.  z Roger Beep When this option is on, beep sound shall be transmitted after the PTT key is released.    z Clear to Talk This function is to inform that voice can be transmitted without a loss. When PTT key is pushed beep sounds out after specified clear time.  - Talk Around z  This function allows communicating directly with other radios without the use of a repeater. z  When using this function, the receive frequency is used for both transmitting and receiving.    z  This function shall be off automatically, when the channel is changed.    z Display Ex.      3) Power Save If this function is activated, the power save function will decrease the amount of using power when current channel is no busy status and no operations are being performed.
Function Description SP-7402 15/32 (3) User Set Mode 1)  This mode is to set internal settings that are not changed very often.  2) Setting -  Push the User Set Mode key to enter the User Set Mode. -  To select item: User Set Mode Key -  To change value of the item: Up/Down Key -  Exit without Save: Monitor Key (or after 10 seconds without key input) -  Save & Exit: PTT Key - Items List z Beep z  LCD Back Light z VOX z TOT z Squelch Level z MIC Sense z Compander On/Off
Function Description SP-7402 16/32 3) Setting Ex.                         3. Emergency Function (1) To transmit Emergency Call Push and hold the emergency key to transmit emergency call. (Push and hold the emergency key once more to exit this function.)  (2) Effect 1) Alert tone  2)  Backlight Blinking (one second interval)
Function Description SP-7402 17/32 (3) Emergency ID This ID consists of DTMF codes.  (4) Formation of the Emergency Call  EMG Call StartSenderReceiverTX TimeTXRXRXTX / RXID(Option)RX TimeTX →RX RX →TXEffect(Option)MIC Mute MIC Unmute MIC Mute  (5) Emergency Call Options 1)  Cycle: The number of repetition  2)  The number of repetition of Alert Tone  3)  RX Time: Time for receiving  4)  TX Time: Time for transmitting  5)  Channel Type: Fixed Channel / Current Channel
Function Description SP-7402 18/32 4. Scan Function (1) Description This function is to monitor a number of channels or channels within a group that are defined in the scan list. (Note: Start re-scanning when turning power on if the radio turned off while scanning)  (2) Scan Type 1)  Normal Scan: If there is no predefined priority channel, Normal Scan shall be running.  2)  Priority Scan: If the radio has a predefined priority channel, Priority Scan will be running.  In this case priority channel is checked every three normal channel scanning.  3)  Power On Scan: When turning power on, the radio automatically starts scanning.  4)  Look Back Scan: When using priority scan, the radio will automatically change to the priority channel when a call is received on the lookback channel. If the priority channel is not correct call status, return to lookback channel.  After lookback interval time, the radio will repeat the above operation.  -  If the priority channel is correct call status, look back scanning will be stopped and the radio receive a call until the priority channel will be not correct call status.  (3) Nuisance Delete This function is to temporarily delete a channel from the scan list.  1)  How to use: Push the monitor key while scanning and stopped on the channel to be deleted.  2)  Note: The original scan list is recovered when the radio’s power is reset.
Function Description SP-7402 19/32 (4) Scan List Edit 1)  You can use the Scan List Edit Key to add or delete.  2) Display         (5) Priority Channel / Lookback Channel Setting 1)  You can set Priority Channel / Lookback Channel using the each setting key.  2) Display        (6) TX Channel on Scan Transmission channel during scan  Scan Type  TX Option  Busy  No Busy Priority Scan TX  Current Ch.  Priority Ch. Priority Scan  Priority Only TX  Priority Ch.  Priority Ch. Normal Scan TX  Current Ch.  TX Inhibition Normal Scan  RX Only TX  TX Inhibition  TX Inhibition      The Scan List Add Indicator Priority Channel Indicator  Lookback Channel Indicator
Function Description SP-7402 20/32 (7) Scan Operation Diagram    Current Group Group xGroup yScan Channel Non-scan ChannelCurrent Group Group xGroup yScan Channel Non-scan ChannelCurrent GroupPScan Channel Non-scan Channel1 2 3 4 5 6 7 8Scan Order: P →2→3→6→P→8→P→2→P→...
Function Description SP-7402 21/32 5. Signaling Function  You can select signalling type of each channel. Especially 5-tone case, you can select and set the format of the tone. (for example: ZVEI1, PZVEI, EEA, CCIR1 etc.)    You can select the sending signal code in the TX Code List which depends on the signaling type of each channel.    In DTMF case, push the PTT key to send the code after inputting or selecting.   In 2-Tone and 5-Tone case, push the Call key to send the code after inputting or selecting. (Note: The Call Key must be programmed to send 2-tone or 5-tone code.)  (1) Signaling Type & Transmission 1) DTMF - Transmission z  Manual Dial: To send the DTMF codes press the numerical key with programmable key while pressing the PTT key.   ①  0 ~ 9, *, # ②  P0: ‘A’ tone ③  P1: ‘B’ tone ④  P2: ‘C’ tone ⑤  P3: ‘D’ tone  z  Store and Send: Push the PTT key after finishing the DTMF codes input. ①  PTT: Code Save & Send ②  Monitor: Cancel (Exit without Save) ③  ‘*’: Special Tone Selection Mode I. ‘*’: * II. ‘#’: # III.  P0: ‘A’ tone IV.  P1: ‘B’ tone V.  P2: ‘C’ tone
Function Description SP-7402 22/32 VI.  P3: ‘D’ tone ④ ‘#’: Delete z  TX Code Select & Enter ①  PTT: Code Save & Send ②  Monitor: Cancel (Exit without Save) ③  Up / Down: Code Selection  z Redial ①  Redial Key: Display the recent sent DTMF code ② PTT: Send ③  Monitor: Cancel (Exit) Note: Error beep out if there is no Redial Code.  2) 5-Tone - Transmission z  TX Code Select Mode ①  TX Code Select & Enter Key: Enter to the TX Code Select Mode ②  Up / Down Key: Select the code ③  Call Key: Send the code  z  TX Code Enter Mode ①  TX Code Select & Enter Key (in TX Code Select Mode): Enter to the TX Code Enter Mode ②  Up / Down Key: Edit the code digit ③  TX Code Select & Enter Key (in TX Code Enter Mode): Change the digit ④  To return to the TX Code Select Mode push the TX Code Select & Enter Key after the last code editing.  z  PTT Key: Save & Exit  z  Monitor Key: Cancel (Exit without Save)  z  Up / Down ①  Code Select Mode: Code Selection ②  Code Enter Mode: Digit Code Edit (0 ~ 9, *)
Function Description SP-7402 23/32 3) 2-Tone - Transmission z  TX Code Select & Enter ①  PTT: Code Save & Send ②  Monitor: Cancel (Exit without Save) ③  Up / Down: Code Selection    (2) Signaling Functions and Receiving 1)  ANI (DTMF & 5-Tone) -  Display the received code on the LCD. -  Display the alias text if the received code matches with one of the code in the RX Code List. -  Display time is 10 seconds.  2)  Selcall (DTMF & 5-Tone) -  The radio will do the correspondent action if the received code matches with current channel ID. - Action z  LED: LED(Amber Color) Blink Effect z  ICON: Icon Blink Effect z  Alert Tone: Alert Beep Effect z  Squelch: Squelch Effect  3) Code Match Operation -  The radio will do the correspondent action if the received code matches with one of the code in the RX Code List. z  LED: LED(Amber Color) Blink Effect z  ICON: Icon Blink Effect z  Alert Tone: Alert Beep Effect z  Squelch: Squelch Effect
Function Description SP-7402 24/32 z Stun ①  When receiving the Stun Code display the stun message until the stun mode is released.      ②  All keys are disabled except the EMG key. (Only Emergency Call and receiving are possible.) ③  Key pressing except the EMG Key will make Error Beep. z Revive ①  When receiving the Revive code in stun mode the radio return to normal mode. ②  When releasing the Stun Mode Cancel Beep out and the revive message will be displayed on the LCD for a second.     z  Text: The text correspondent with the received code will be displayed,    4) Optional Functions -  Transponder: This function is to send the Alert Tone automatically when the received code matches with current channel ID.  -  Auto Reset Time: After matching status(the received code matches with current channel ID or one of the codes in the RX Code List) if Auto Reset Time is elapsed with no busy status return to call standby status.  -  Push the monitor key to return to call standby status before Auto Reset Time is elapsed.
Function Description SP-7402 25/32   -  Remind Time: After matching status if there is no key input correspondent call icon will be blinked while reminding time.    z  Push any key to stop the icon blinking.  z  Receiving status will be displayed until any key input.                             DTMF Case  5-Tone, 2-Tone Case Display the correspondent text when the received code matches with one of the codes in the RX Code List.
Function Description SP-7402 26/32 (3) Signaling Operation Example 1) DTMF   ANI: Displays the received DTMF code.Alert: Beeps out if the received DTMF code and Ch. ID are the same.Code Name Actions110001 KIMYN X210002 RYUJG SQL Open310003 KIMY Alert ON410004 KIMCG LED ON500001 NOTHIN G X600002 BUSY X700003 READY X800004 COMEON XReceiver2's DTMF RX Code ListCH NO. Signaling CH ID NameCH 1 DTMF 10001 KIMYNCH 2 DTMF 10002 RYUJGCH 3 DTMF 10003 KIMYCH 4 DTMF 10004 KIMCGCH 5 DTMF 10005 TWR_SWCH. 6 DTMF 10006 TWR_HWCH 7CH 8Channel DataSenderCH 5CH ID: 10005100051000510005Alert ONSenderReceiver 210001Display "KIMYN"CH 5CH ID: NoneNo ResponseCH 1CH ID: 10001No ResponseReceiver 110001Display "10001"Command: Carries out designed actions if the transceiver receives a valid code.Code Name Actions110001 KIMYN X210002 RYUJG SQL Open310003 KIMY Alert ON, Icon Blink410004 KIMCG LED ON500001 NOTHIN G X600002 BUSY X700003 READY X800004 COMEON XReceiver1's DTMF RX Code ListSenderReceiver 210003Alert ON, Icon BlinkReceiver 3Receiver 11000310003No Response No Response
Function Description SP-7402 27/32 2)  5-Tone Group Call  No. Signaling Type CH ID CH. Name15-Tone 10001 KIM25-Tone 10002 RYU35-Tone 10003 YONG45-Tone 20001 KANG55-Tone 20002 CHUNG65-Tone 20003 JONG75-Tone 30001 KWANGGroup AGroup BGroup CSenderKIM100AA100AA100AAGroup Call BeepLCD Blink('Group')KANGNo ResponseKWANGNo ResponseChannel Data
Function Description SP-7402 28/32 (4) 5-Tone Table  Tone ZVEI1 PZVEI DZVEI DDZVEI PDZVEI CCIR1 CCIR2 PCCIR EEA Eurosignal NATEL02400 2400 2200 2400 2200 1981 1981 1981 1981 979.8 163311060 1060 970 1060 970 1124 1124 1124 1124 903.1 63121160 1160 1060 1160 1060 1197 1197 1197 1197 832.5 69731270 1270 1160 1270 1160 1275 1275 1275 1275 767.4 77041400 1400 1270 1400 1270 1358 1358 1358 1358 707.4 85251530 1530 1400 1530 1400 1446 1446 1446 1446 652.0 94161670 1670 1530 1670 1530 1540 1540 1540 1540 601.0 104071830 1830 1670 1830 1670 1640 1640 1640 1640 554.0 120982000 2000 1830 2000 1830 1747 1747 1747 1747 510.7 133692200 2200 2000 2200 2000 1860 1860 1860 1860 470.8 1477A2800 970 825 885 825 2400 2400 1050 1055 --- 1995B810 810 740 810 886 930 930 930 930 571C970 2800 2600 740 2600 2247 2247 2400 2400 2205D885 885 885 680 856 991 991 991 991 2437E2600 2600 2400 970 2400 2110 2110 2110 2110 1062.9 1805   Note -  Group Tone: A  (‘*’) - Repeat Tone: E z Example: 11111 Î 1E1E1
Function Description SP-7402 29/32 6. Other Functions (1) Memory Channel 1) Description -  You can memory channels that are frequently used up to 10 memory channels. -  Programmable key and 10-keypad can be used as a memory channel key.  2) Operation -  In case of no 10-keypad, you can memory channels up to 4 memory channels. -  If you push the memory channel key, current channel will be changed to correspondent memory channel like as Direct Channel Function. -  When memory function is activated, the rotary selector position can be different from current memory channel information.  (2) Battery Indication 1)  The battery indicator shows approximately how much charge is left. 2)  Display (4-Step Display)   3) Low Battery -  Battery Icon will be blinked and warning beep out when the battery is low.      4)  Low Battery in Transmitting -  If battery is low when transmitting, next transmission will be inhibited.       Blinking the battery icon
Function Description SP-7402 30/32 (3) Key Lock 1)  All keys are locked except EMG, PTT and Rotary Selector. -  To release the key lock status, push the lock key once more.  2)  Display of the Key Lock Status        (4) Transceiver Lock 1)  This function is to prevent others from using the radio. -  If you push the transceiver lock key, when the radio has no password Error Beep out and Error Message will be displayed.     (5) Compander 1)  This function is to reduce noise components from the transmitting audio to provide clear voice quality. 2)  Display: The compander icon appears when the function is on.      (6) Scramble 1)  This function is to prevent others from easily listening your call. 2)  Display: The scrambler icon appears when the scrambler is on.     Key Lock Icon
Function Description SP-7402 31/32 (7) Man Down Î Optional Function  (8) Lone Worker If there is no key input within the specified time, warning beep out while warning duration.    If there is no key input while warning duration, emergency call is transmitted automatically.
Function Description SP-7402 32/32 7. Function List & User Set Mode Function  Value Function Remark0None1Backlight OFF / ON / AUTO2Beep OFF / ON Controls the whole beep.3Call4Channel Down Long Key5Channel Up Long Key6Compander OFF / ON7Group Down Long Key8Group Up Long Key9Key Lock10 Lone Worker`11 Lookback Channel Setting12 Man Down OFF / ON13 Memory Channel 114 Memory Channel 215 Memory Channel 316 Memory Channel 417 Priority Channel Setting18 DTMF Redial19 Scan List Setting20 Scan Start / Stop21 Scrambler OFF / ON22 Talk Around23 Tone Squelch124 Tone Squelch225 Transceiver Lock26 TX Code Select & Enter27 TX Power High / Low28 User Set Mode29 VOX OFF / ON3031   Reserved Compander MIC Sense Squelch Lv. TOT VOX Backlight BEEP
Service Information      Service  Do not tamper with internal adjustments. Damage to the equipment and/or improper operation may result. There are no user serviceable items inside the radio. It is recommended that you return your radio to a qualified Maxon Dealer for any service or repairs.      Recycling/Disposal of Batteries    The battery should be recycled at the end of its useful life. Under various state or local laws, such batteries must be recycled or disposed of properly and cannot be dumped in landfills or incinerators.   For jurther information on how to safely dispose of four used batteries, contact your reseller.          Maintenance   Your SP7402 Radio is designed to be maintenance free. To keep your radio in good working condition:     Clean external surfaces with a clean cloth dampened in a solution of dishwasher detergent diluted in water. Apply the solution sparingly to avoid any moisture leaking into cracks and crevices. Do not submerge the radio. Use a non-metallic brush to dislodge stubborn particles, if necessary. Dry the surface thoroughly with a soft, lint free cloth.      DO NOT use solvents or spirits for cleaning - they may permanently damage the housing.     Clean the battery contacts on the back of the radio with a lint free cloth to remove dirt, grease, or other foreign material that may impede good electrical contact.      Limited Warranty   Maxon shall have no obligation to make repairs or to cause replacement required which result from normal wear and tear or necessitated in whole or in part by catastrophe, fault or negligence of the user, improper or unauthorized alterations, repairs to the Product, use of the Product in a manner for which it was not designed, or by causes external to the Product. This warranty is void if the serial number is altered, defaced or removed. Maxon's sole obligation hereunder shall be to repair or replace the Product covered in the above warranty.

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