Kenwood TK-940 Free System Ringback, System Search, Transpond, Preferred System Revert

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1

OPERATING FEATURES

 

)

3-13. Free System Ringback

>

Thls feature is avalabe only when a telephone inter-

 

 

connect ID code IS selected. If a busy tone sounds

 

 

when the PTT button IS pressed, the transceiver enters

 

 

this mode automat~cally.

 

 

When the PTT button is released, a beep sounds for

 

 

400ms to indicate that the mode has been entered. If

 

 

the scan IS on, it is resumed (the amark goes on.)

 

 

When any repeater becomes available, a ringing tone

 

 

s o ~ ~ n ands this mode ends.

 

 

The mode is terminated when the system, group,

 

 

scan, P n , or AUX key is changed.

 

 

3-14. System Search

 

 

Th~sfeature can be programmed to automat~cally

 

1

access other programmed systems when the selected

 

system cannot be accessed If an Intercept tone

 

sounds when the PTT button IS pressed after setting

 

the moae, the transcelver has entered the mode

 

 

 

c

If the group ID IS a telephone Interconnect ID, the

 

 

transcelver then attempts t o access, In succession,

 

[

other systems that have a telephone tnterconnect ID in

 

the revert group locatlon If the group ID IS a dlspatch

 

g

ID, the transcelver attempts to access other systems

 

 

 

 

that have a dlspatch ID programmed In the revert

 

 

group locatlon

 

 

If there IS no system to be accessed, an Intercept

 

 

tone sbunds, the mode IS termlnated, and the trans-

 

 

celver returns to the flrst system If the access IS suc-

 

 

cessful, the mode IS termlnated, and the searched sys-

 

 

tem becomes the new selected system (If durrng

 

 

scannlng, the scan stops )

 

 

3-15. Transpond

3-17. Preferred System Revert

This feature is available by assigning this feature to the AUX (Aux~liary)key The feature is used to move the revert system/group to the fixed programmed sys- temlgroup qu~ckly. When the AUX key I S pressed during scanning, the scan stops temporarily, and the revert systemlgroup is displayed. The scan resumes about one second after the AUX key is released.

3-18. Alphanumeric Display Select

The systemlgroup number display and the alphanu- meric display can be switched with the AUX key by assigning this feature to the key. Figure 2 shows the characters that can be displayed. These are basic char- acters, and can be displayed in each segment. Four digits can be displayed at the same time.

I 7 71-

----

I l l I I

I I ,

1-1 h I

II I-- 1 - !--I

1 - 1

A B C D E F G H I

J K L M N O P Q R

S T U V W X Y Z

Thts feature can be programmed to turn on and off each group. If the ID of the group for which trans- d IS enabled is received, t w o data messages (trans- ID and turn-off code) are automatically transmitted

mmed to turn on or off for button is pressed for the nd feature is set, the home r transmission, and the re- rformed. Signaling must

- ;

Fig. 2

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Contents FX-R%~?ONIT1x57-4590-XXI BIZ $@$, ~\, !? .- $LU~CO .i@&4170-XXGeneral TestingInstallation Planning Control Stations 5-1. Antenna system DC Power and wiringAntenna RadioSystem SET-UP Operating Features Scan indicator Front Panel Displays and Indicators System display Delete 1 indicator Busy indicatorDetails of Features TEL ID Codes TEL Mode Time-Out TimerSystemIGroup Revert Last call revertSystem Search Free System RingbackTranspond Preferred System RevertAuto TEL Delay toneAudible User Feedback Tones Proceed toneCall indicator, alert tone Transmit disable receive-only channelsConventional System Operation Talk-aroundNon-continuous Horn AlertContinuous System Scan Type Fix system scanTransceiver Programming Data Program ModeIr 4-1.lntroduction KPG-4 Description Optional PC programming interface cableDealer mode Clone Mode FigureDescription of Each Modes System keyVolume key Panel Tuning ModeGroup key Scan keyKDD-4assembly Installing the Signaling Unit KDD-4 Dtmf OptionInstalling the KDD-4 in the transceiver InstallationJumper setup charts Accessory Connection Cable KCT-19 OptionMonireset ON-HOOK OFF-HOOK JU2 JU3 JUJ Mute UrimuteGND Terminal functionR5 and R6 setup chart Connecting the KCT-18 to the transceiverIgnition Sense Cable KCT-18 Option Modifying the transceiverExternal Speaker Connection procedureKES-3 Option KES-4 OptionFitting the Control Panel Upside Down Page Page Page Page If unit RF unitMCF ANT AMP If System -AMPSP PLL MIC AMPAudio amplifier unit Squelch circuit Microphone amplifier Buff IRF AMP PLLVcxo DET InvswControl unit Power supply circuit PLL data outputHorn control Power switch circuit LCD AssemblyCPU Tone generatorTerminal connection diagram Block diagramEeprom AT24C02NlOS12.7 TX-RX Unit IC201 Terminal connection diagram Terminal functionTest DEC DINMicroprocessor 78312AGF3563BE TX-RX Unit IC209 Microprocessor 75308BGK740BE9 LCD Assy IC2 CLK Output aTEST2 TEST1 Eeprom NJM78L05UADTA114EU--DC DTA114YULCD Assy B38-0731-05 Rating wattage Cc4riqKusa TK-940/941Insulating Tube ANT Cable Speaker 16 QHM 1W Micrqphqnb Tapttte Screw A T Head T a P T T I E Sciiewpannel Screw SETY4U Icpqwer Modulej .. Drive TX-RXW w w W W 1 W l Uuupi I P C X E D CU U P F U P FR c Hesbnatuh ES $j Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Pattern Page Foil side IC20E Dtci 14EU DTCI44EU Page Page Component side PC Board View ~ o h ~ o n esident Page TX-RX Unit TX-RX Section X57 4590 XX A/2 11 TK A1 PLL O w m o d +4- aLIE- - aIz23z= Page Ccrl--------ASSYDISPLAY S~ECTION838 Eqqzj