Maxon SL-7402 Parts list manual

Function Description SL-7402
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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 tothe samesafety 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.

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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

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(7) Man Down ................................................................................................................31
(8) Lone Worker ............................................................................................................31
7. Function List & User Set Mode Function........................................................................32

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1. Panel Description
(1) Front Panel
No. Description No. Description
1Power On/Off, Volume Control S/W 6Up/Down / Select Button
2Rotary Selector 7LED Indicator
3Emergency Button 8LCD Display
4Monitor Button 9Default Programmable Keys
5PTT Key Optional 10-keypad
12
3
8
4
5
6
7
9


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(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)NameTextDisplay Ex)Scroll의예
      

Priority Channel Indicator Lookback Channel Indicator

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(3) Display Option
1) Display Type
- Channel Name Display
zDisplay only Channel Name when this type is selected.
zDisplay the Group Number for a second when Group is changed.
zScrolls when the name is more than 7 characters
- Channel Number Display
zDisplay only Channel Number when this type is selected.
zDisplay the Group Number for a sec when Group is changed.
- Group / Channel Number Display
zDisplay Group & Channel Number when this type is selected.
- Group / Channel Name Display
zDisplay Group & Channel Name when this type is selected.
zDisplay ‘/’ between Group and Channel Name as a descriptor.
zScrolls when the name is more than 7 characters

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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)PowerOn
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)EEPROMError
- Power On Beep Generation (Option)
Beep sounds out after success of Initialization and Self Test.
(Depends on Beep Option)

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- 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
zGroup 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.

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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.
zChannel 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

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- 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

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- RSSI (Received Signal Strength Indication)
This function is to indicate the received signal strength.
Display Ex.
Signal Strength
- Receiving Option
zSquelch Level Control
Squelch level is adjustable 1 to 9 step by PC Program or User Set
Mode.
zSub-Audio Tone
①CTCSS
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 40 159.8
2 71.9 15 110.9 28 173.8 41 165.5
3 74.4 16 114.8 29 179.9 42 171.3
4 77.0 17 118.8 30 186.2 43 177.3
5 79.7 18 123.0 31 192.8 44 183.5
6 82.5 19 127.3 32 203.5 45 189.9
7 85.4 20 131.8 33 210.7 46 196.6
8 88.5 21 136.5 34 218.1 47 199.5
9 91.5 22 141.3 35 225.7 48 206.5
10 94.8 23 146.2 36 233.6 49 229.1
11 97.3 24 151.4 37 241.8 50 254.1
12 100.0 25 156.7 38 250.3
13 103.5 26 162.2 39 69.4

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②DCS (IDCS)
The radio also has a digital coded squelch function which
consists of 104 codes.
No. Code No. Code No. Code No. Code
1 023 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
zSignalling (2-Tone, 5-Tone, DTMF)
ÎThere are three type audio-band tone signaling.
Refer to Signaling section.
zTone Squelch Option
①Tone 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.

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②Tone 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
zPTT Key
Push the PTT (Push To Talk) key to transmit.
zVOX 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
zPTT ID
When transmission is starting, PTT ID which consists of DTMF or 5-
tone depend on system and signaling option can be transmitted.
zTX 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.
zTOT (Time Out Timer)
This function is to prevent continuous transmitting over than specified
time that is programmed via PC programmer.
zBCLO (Busy Channel Lock-Out)
This function is to prevent transmitting when current channel is in
busy status.

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zMarked Idle
This option allows transmitting when current channel is in correct call
status even if BCLO option is applied.
zTX 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.
zRoger Beep
When this option is on, beep sound shall be transmitted after the PTT
key is released.
zClear 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
zThis function allows communicating directly with other radios without
the use of a repeater.
zWhen using this function, the receive frequency is used for both
transmitting and receiving.
zThis function shall be off automatically, when the channel is changed.
zDisplay 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.

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(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
zBeep
zLCD Back Light
zVOX
zTOT
zSquelch Level
zMIC Sense
zCompander On/Off

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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)

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(3) Emergency ID
This ID consists of DTMF codes.
(4) Formation of the Emergency Call
EMG Call Start
Sender
Receiver
TX Time
TX
RX
RX
TX / RX
ID(Option)
RX Time
T
X→RX RX →
T
X
Effect(Option)
MIC Mute MIC Unmute MIC Mute
(5) Emergency Call Options
1) Cycle: The number of repetition
2) The number of repetition ofAlert Tone
3) RX Time: Time for receiving
4) TX Time: Time for transmitting
5) Channel Type: Fixed Channel / Current Channel

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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.