Kenwood TK-941 Service Manual

1

800MHz/900MHz

FM

TRANSCEIVER

C'

SERVICE

MANUAL

Microphone

O

1994-8 PRINTED IN JAPAN

B51-8281-00( N

)

121

9

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BLOCK

LEVEL CIRCUIT DESCRIPTION 27 SEMICONDUCTOR

DESCRIPTION

PARTS LIST EXPLODED VIEW

PACKING

DIAGRAM

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DATA

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SCHEM&TIC

SPECIFICA~:IONS

KT-19 (ACCESSORY CONNECTION CABLE1

KDD-4 (D'rMF DECODER) BACK

.i@&4170-XX)

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66

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83

COVER COVER

COVER

GENERAL

INTRODUC'TION

SCOPE OF THIS MANUAL

This manual

technicians familiar with similar types of commercial grade communications equipment. It contains all re-

quired service information for the equipment and is

current as of the publication data. Changes which may

occur after publication are covered by either Service

Bulletins or Manual Revisions. These are issued as required.

i? intended for use by experienced

ORDERING REPLACEMENT PARTS

When ordering replacement parts or equipment in-

formation, the full part identification number should be

included. This applies to all parts : components, kits, or chassis. If the part number is not known, include the chassis or kit number of which it is a part, and a suffi-

cient description of the required component for proper

identification.

FCC COMPLIANCE AND TYPE NUMBERS

technician

ns are recommended for

one is within two feet

ransmit until all

DO

lasting caps or in an explosive

only.

RF

connectors are verified

ectors are properly

NOT

operate this equipment

properly grounded before

erviced by a qualified

v

(0.6

termi-

at-

Type acceptance number

ALHTK-940-1 ALHTK-941-1

PRE-INSTALLATION CONSIDERATIONS

1. UNPACKING

Unpack the radio from its shipping container and check for accessory items. If any item is missing, please contact

2.

LICENSING REQUIREMENTS

Federal regulations require a station license for each

radio installation (mobile or base) be obtained by the

equipment owner. The licensee .is responsible for

ring transmitter power, frequency, and deviation are

hin the limits permitted by the station license.

ansmitter adjustments may be performed only

nsed technician holding an FCC first, second or

KENWOOD immediately.

en-

by

ss commercial radiotelephone operator's li-

re is no license required to install or operate

Frequency range

806-870MHz 896-941 MHz

3. PRE-INSTALLATION CHECKOUT 3-1. Introduction

Each rad~o

However, it is recommended that mitter operation be checked for proper fore

~nstallat~on.

3-2.

Testing

The

radio should be tested complete with all cabl~ng and accessories as they wrll be connected In the f~nal installatron. Transmrtter frequency, dev~at~on, and

power

~gn~jtivity, squelch operation, and audio output,

'Q~~equiprnent operation should be verif~ed.

p~tput should be checked, as should recelver

Complrance

Part 90 Part 90

IS

adjusted and tested before shipment.

recerver and trans-

operatron be-

E

INSTALLATION

e vehicle and determine how and where

cable runs for protection against

g wiring,

and radio installation to prevent,over-

pinching or

9401941

5.

INSTALLATION PLANNING - CONTROL STATIONS

5-1. Antenna system

Control station. The antenna system seect~on de-

pends on many factors and

manual. Your KENWOOD dealer can help you select

an antenna system that will best serve your particular

needs.

IS

beyond the scope of this

4-2. Antenna 5-2. Radio location

The favored

of a large, flat conduct~ve area, usually at the roof

ter The trunk Ild

vehicle

at chassis ground

4-3. Radio

mounted in a variety of ways. Be sure the mounting

surface is adequate to support the radio's weight. Al-

low sufficient space around the radio for air cooling. Position the radio close enough to the vehicle operator to permit easy access to the controls when driving.

chassis

The universal mount bracket allows the radio to be

location

using ground straps to ensure the Ild 1s

for an antenna Is In the center

IS

preferred, bond the trunk

ten-

and

Select a convenlent location for your control stat~on

rad~o which is as close as practical to the antenna cable

entry pornt Secondly, use your system's power supply

(whlch supplles the voltage and current requ~red for

your system) Make sure

rad~o and power supply to allow adequate cool~ng

the

SERVICE

This radio is designed for easy servicing. Refer to

the schematic diagrams, printed circuit board views,

and alignment procedures contained in this manual.

Note

When you modify your radio as described in systern

set-up, take the following precaution.

The rating of pin

cable

(KCT-19) on the rear of the radio is 13.6V

Insert a 1A fuse if you use the SB pin for external

equipment.

f

I

1

k

t

i

t

I.

F

4-4.

DC

Power and wiring

1

Th~s rad~o may be ~nstalled In negatlve ground eectr~cal systems only Reverse polar~ty cable fuse to blow Check the veh~cle ground polar-

~ty before ~nstallat~on to prevent wasted time and

effort

2

Connect the posltive power lead d~rectly to the ve-

h~cle battery pos~tive term~nal Connect~ng the Positive lead to any other posltlve voltage source In the veh~cle

IS

not recommended

will

cause the

suff~c~ent air can flow around

7

(SB) of the accessory connector

Accessory connector cable

Fuse

(IA)

(KCT-19)

(IA).

If

1

"""""

switch, a switching relay should be used to switch the posltwe power lead The vehcle

/

controls

1

I

1

3

4

DC

power is to be controlled by the vehicle ign~tion

ignition

DC

to the relay co~l

Connect the ground lead d~rectly to the battery

negatlve termlnal

The cable prov~ded wlth the radlo

handle the maximum radio current demand If the

cable must be extended, be sure the

IS

suff~c~ent for the current to be carr~ed and length

of the added lead

switch then

IS

suff~c~ent to

addit~onal wire

If you do not intend to use the 3.5-mm jack for the

external speaker, fit the supplied speaker-jack cap

(B09-0235-XX) to stop dust and sand getting in.

Speaker-jack cap

(B09-0235-XX)

Merchandise received

SYSTEM SET-UP

P

t

License and frequency allocated by FCC

I

Choose the type of transceiver

Y-

I

Transceiver programming

(Option)

Are you using the external speaker?

Frequency range (MHz)

TX

806-825

851 -870 RX TX 896-902

w

See page 13. A personal computer and programming software (The frequency and signaling (option) data are programmed for the transceiver.)

External speaker

851-870

935-941

RX 935-941

(IBM

PC or compatible), programming interface (KPG-4),

(KPG-25D) are required for programming.

See page 21.

KES-3

RF power

15W

,

15W

See page 16. Modify the control unit when used KDD-4.

Type

TK-940 K

TK-9,41 K

See page 21.

c

N

Delivery

1

(Option)

See page 18.

Ignition sense cable

0

(Option)

See page 20.

KCT-18

)

OPERATING FEATURES

2.

1.

Operation Featu tes

The TK-9401941 s an 8001900MHz-band

compat~ble trunked ladlo deslgned to operate In both trunked and convent~ona modes The programmable push buttons The funct~ons of these keys are ex-

features

1-1.

)

1-2.

programmed for trunked transceiver operation.

(

i

ale summarlzed plained below

General Transceiver Features POWER key

Any combination of tional systems programmable. Up to 250 (MAX) groups are programmable in each system.

&digit alphanumeric characters pare programmable for each group.

Types system scan is selectable. System lockout for scanning. Time-out timer (Dispatohflelephone) CALL indicator Clear-to-talk system number changes continuously. After the

External DTNlF decoder (The optional KDD-4 DTMF decoder is required.) Test mode numbers not set are skipped.

Horn alert port

Data port

32

(MAX) trunked and conven-

Trunked System Features

The following features are available with systems

Group Scan

Transmit Inhibit

Telephone Interconnect (The optional microphone

with DTMF pad is required.) tem scan

Free System Ringback (This feature is available only

when a telephone interconnect ID code is selected.)

AUTO TEL (This feature is available only when a

telephone interconnect ID code is selected.)

EFJ

LTRIM-

Transceiver Controls and Indicators (Fig.

2-1.

Font Panel Controls

All the keys on the front panel

Transceiver POWER key. switched off, all the parameters, such as the system and group, are stored in memory. When the power is switched on again, the system returns to the previous conditions.

-

SYSTEM LIPIDOWN key

When the SYSTEM

system number to be selected is incremented or decremented by one. When the key is held down, the

system number reaches the highest system number, it

goes back to the lowest system number. System

UPIDOWN key is pressed, the

ale momentary-type

When the power is

GROUP UPIDOWN key

This key is operated in the same way as the SYSTEM UPIDOWN key. When the system number is changed, the GROUP indicator shows the original

group number (the last selected group number in each system). The group to be set may differ by system.

of this key can

be disabled by pro

1)

func-

Talk-around (Can be set for each group.) System Search

1-3.

Conventional System Features

The following features are available with systems

programmed for conventional transceiver operation.

Up to each system. (Channels are selected using the

250

(MAX) channels are programmable in

OPERATING FEATURES

AUX key

This key toggles the auxiiiary function on and off. If this key is pressed once, the auxiliary function is enabled. If the key is pressed again, the auxiliary function

is

d~sabled. The confirmation tone is the same as that

of the scan key. The following auxiliary functions are

available and can be

1) Horn alert

2)

Manual relay

3) System scan delete function

4) Fixed revert system call (invalid if the system is not set)

5) Switching between alphanumeric display and

systemlgroup indicator (toggle)

(Invalid if the alphanumeric display is not set)

When the alphanumeric display is selected, the confirmation tone is output for about When the systenilgroup indicator is selected, the confirmation tone is output twice (output

off 50ms, output 50ms).

6)

AUTO

TEL

7)

Option signalling reset

8)

Invalid

2-2.

Front Panel Displays and Indicators

System display

Indicates the selected system number (1 Only the programmed systems are displayed. The system display is located above the SYSTEM UP/ DOWN key.

progl-amr-iied by the FPU:

-MAX

50ms.

50ms,

32).

Group display

Shows the selected group rlumbei (1-MAX 250)

~ndicates group 10

Zero

d~splayed The group d~splay 1s located above the

are GROLIP

scan mode.

quence is selected, the

on. The mark flashes if there is a locked system during

fixed system scan.

flash during list type scan.)

pressed when the trunked system is busy or while a TX inhibit ID is being received.

goes on when a specified call is received. This indicator goes off when any front panel key is pressed.

indicator does not go on matches.

LIPIDOWN key

Scan indicator

The

a

mark on the display goes on in system

Delete

When a system locked out of the system scan se-

BUSY indicator

The BUSY indicator goes on if the PTT button is

CALL indicator

The

If the KDD-4 is installed and the call flag is Y, this

(

)

1

indicator

CALL

indicator can be prograrnmed so that it

Only the programmed groups

)

mark on the display goes

!It does not light continuously or

unless the DTMF code

'

,

POWER

SW VOL UP

1

,

I

-

SCAN

--t-

v

Alpha-numeric

LCD

I

display

SCAN SW AUX

TEL

*

"-

I

/

S'N

1

Fig.

I

OPERATING FEATURES

.

Alphanumeric display

The 8-dig~t alphanumerlc

system and group numbers.

displays can be programmed for each group. alphanumeric display and group numbers are displayed.

After the dealer's programs the transceiver, the alphanumeric display shows system numbers and group numbers for your s~ecific network.

TA indicator

Appears when the Talk-around systemlgroup is

selected.

OPT indictor

Dlsplays the KDD-4 decode latch of optonal

)

slgnallng

AUX (Auxiliary) indicator

Appears when the manual relay or horn alert

function

programmed wlth telephone IDS

I

AUTO TEL

3.

3-1.

r'

by programmlng the scan feature When the "SCAIU'

c

;

key

b

IS

the currently dlsplayed system When scannlng,

"-SCAN-' When a call tem and group are

pressed dur~ng scannlng, the scan stops and the revert system or group can be changed one second after the key feature is not programmed, the "SCAN" key on the front panel is ineffective.

IS

activated

Handset indicator

Appears when a group

1

Details of Features

System Scan

System scan can be selected wlth the "SCAN" key

IS

pressed and the

entered Scann~ng starts from the system follow~ng

IS

~nd~cated on the alphanumerlc dlspay

IS

When the system or group or volume (AUX) key

IS

(ON) by presslng the AUX key

received,

dlsplayed

(NN)

display also shows

8-digit alphanumeric

If the

not programmed, the system

qualfied service technician

IS

selected that

(It flashes durlng

a

mark appears, scan mode

scannlng stops, and the sys-

Scannlng resumes

IS

released If the scan

IS

3-2.

System Lockout

The system lockout feature out of the scan sequence, and can be selected by programming in the following two ways:

Fixed lockout

The system to be locked out is selected by program-

ming. When a locked system is selected, the Delete

( ) )

Indicator appears on the left of the SYSTEM indi-

cator. The revert system is scanned even if it is locked

out. If there is a locked system, the Delete tor flashes during fixed scanning. (It does not light continuously or flash during list type scan.)

User selectable lockout

If the AUX (Auxiliary) key is programmed for the scan lockout feature, the user can lock systems out of the scan sequence with the AUX key. To lock a system out of the scan sequence, press the AUX key when the system is

indicator is displayed on the left of the SYSTEM indicator.

To unlock a system, select the system and press

the AUX key. The Delete

indicate that the system has returned to the scan se-

quence. The revert system is scanned even if it is

locked out. If there a locked system, the Delete indicator flashes during fixed scanning. (It does not light continuously or flash during list type scan.) If all systems are locked out, the scan stops and only the revert system is received.

If another function is assigned to the AUX (Auxiliary) key, the USER SELECTABLE LOCKOUT feature does not function.

3-3.

Drop-Out Delay Time (Scan Resume Time)

If a call

scan resume time can be programmed as onds seconds.

3-4.

The dwell time 1s the time after transmlsslon ends

until the scan resumes

to 254 seconds by programmlng The default value 1s

1

5

seconds.

IS

received during scan, the scan stops The

In one-second increments The default value

Dwell Time

dlsplayed. The Delete

In scan mode It can be set to

IS

used to lock systems

(

( ) )

indicator disappears to

0

b

)

indica-

(

b

(

b

to 254 sec-

IS

3

0

)

OPERATING FEATURES

I I

1

I

1

!

1

I

3-5. SystemIGroup Revert

SystemIGroup revert can be programmed for one of

the following:

Last call revert

The system or group changes to the revert system or group when a call group being scanned.

Last use revert

If a systemlgroup call is received during scanning and the sponse within the drop out delay time, the system or group is assigned as the new revert system or group.

3-6. Scan Message Wait

receives a signal during system scan and monitoring data messages can be programmed. If there is no sig-

nal from the home repeater, the system is scanned for about are monitored. Normally, three data messages a re

monitored for each system, and it can be increased in

multiples of three data messages per line to up to eight

lines.

no call, data monitoring is terminated and the home

repeater of the next system is scanned.

3-7. Call Indicator

group In trunked systems,

a selectable decode ID or one of two

block

decode ID, the

recelved wlth a flxed ID, the call lndlcator lights con-

tinuously.

programmed to l~ght for each QT or DQT code

keeps flashlng while a call

off by

3-8. Time-Out Timer

onds

PTT

button 1s pressed for transmission and re-

The time for staying wlth the home repeater that

50ms. If there is a signal, three data messages

If the repeater data message indicates that there is

The call lndlcator can be programmed for each

IDS When a call

In a convent~onal system, the call

presslng any front panel key

The tlme-out timer can be programmed In 15 sec-

increments

patch and Interconnect operat~ons If the transmlt-

IS

received with the system or

~t

can be set to respond to

flxed IDS, except

IS

recelved wlth a selectable

call Indicator flashes When a call 1s

from

indicator

IS

belng recelved

15

seconds to ten mlnutes for

for longer than the pro-

ter

IS

dlsabled and a warn-

PlT

button

PlT

he

ute for

IS

button dlspatch and three

can be

It

IS

turned

held down.

IS

released.

It

3-9. Priority ID Codes

The priority of the programmable decode ID codes

for each system is as follows:

1)

Fixed ID code

2)

F~xed ID code

3)

Selected ID code

4)

Other selectable ID codes (Group scan only)

5)

Block decode codes

When a call is received immediately (except when the transceiver is trunked out).

3-10. Group Scan Operation

Group scan can be programmed for each group. In addition to the ID codes of the selected group, the ID codes of the other groups that are permitted for group scan are decoded. (The two fixed ID and block decode codes are always decoded.)

If, during group scanning, a of the selectable group ID codes for which group scan is enabled, the group display indicates the group number that the call came in with. That group then becomes the new selected group. Group scan resumes after the specified drop-out delay time or dwell time shared by the system scan elapses.

3-1 1. Transmit Inhibit

The transceiver can be programmed wlth a transmit

inhibit block of ID codes. If an ID code within this block is decoded the preset time before the

'pressed, transmission is inhibited. The BUSY indicator

lights and a busy tone sounds until the released to indicate that transmission is not possible (except clear-to-talk mode).

Transmission with the group for which the encode

ID is not set is inhibited, and the busy tone is output while the clear-to-talk setting.

3-12. TEL ID Codes (TEL MODE)

The ID code in the TEL ID block can be used to make

a phone call by programming the block. To make a

phone calls, an optional DTMF microphone is required.

call with a higher priority is received, that

PTT

1

2

call is recelved with one

PTT

button is

PTT

button is

button is held down, regardless of the

1

OPERATING FEATURES

3-13. Free System Ringback

>

)

1

c

[

g

Thls feature is avalabe only when a telephone inter-

IS

connect ID code

when the this mode

When the PTT button is released, a beep sounds for 400ms to indicate that the mode has been entered. If the scan When any repeater becomes available, a ringing tone so~~nds and this mode ends.

The mode is terminated when the system, group,

scan,

3-14. System Search

Th~s feature can be programmed to automat~cally access other programmed systems when the selected system cannot be accessed If an Intercept tone sounds when the PTT button the moae, the transcelver has entered the mode

transcelver then attempts to access,

other systems that have a telephone tnterconnect ID in the revert group locatlon

ID, the transcelver attempts to access other systems that have a group

tone celver returns to the flrst system If the access cessful, the mode tem becomes the new selected system scannlng, the scan stops

PTT button

automat~cally.

IS

on, it is resumed (the

Pn,

or AUX key is changed.

If the group ID

dlspatch

locatlon

If there

IS

sbunds, the mode

selected. If a busy tone sounds

IS

pressed, the transceiver enters

a

mark goes on.)

IS

pressed after setting

IS

a telephone Interconnect ID, the

In

succession,

If the group ID

ID

programmed In the revert

no system to be accessed, an Intercept

IS

termlnated, and the trans-

IS

termlnated, and the searched sys-

)

IS

a dlspatch

IS

(If durrng

suc-

3-17. Preferred System Revert

This feature is available by assigning this feature to the AUX the revert temlgroup qu~ckly. When the AUX key

during scanning, the scan stops temporarily, and the revert about one second after the AUX key is released.

3-18. Alphanumeric Display Select

meric display can be switched with the AUX key by assigning this feature to the key. Figure characters that can be displayed. These are basic characters, and can be displayed in each segment.

digits can be displayed at the same time.

I7

1-1

(Aux~liary) key The feature is used to move

system/group to the fixed programmed sys-

IS

pressed

systemlgroup is displayed. The scan resumes

The systemlgroup number display and the alphanu-

2

shows the

Four

----

71-

h

I I I I--

Ill I I I I,

1-

!--I

1-1

ABCDEFGHI

JKLMNOPQR

STUVWXYZ

3-15. Transpond

Thts feature can be programmed to turn on and off

each group. If the

d

IS

enabled is received, two data messages (trans-

ID

and turn-off code) are automatically transmitted

ID

of the group for which trans-

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

OPERATING FEATURES

3-19. AUTO

A telephone interconnect call can be made by sim- Th~s tone is output when the

ply pressing the AUX feature to the key. This feature accesses the TEL indicate connection with the repeater is delayed. This channel of the available system automatically.

When the AUX key is pressed, a queue tone is output, and the "AUTO alphanumeric display along with a flashing handset indicator entered. If the TEL ID is set for the revert system, the

TEL channel of that system is accessed. If all TEL

channels are busy, an attempt is made to access the tion has been set. (The high tone is output for 100ms.) TEL channels of another system in which the TEL ID code has been programmed. It is repeated for 60 seconds until the.access succeeds. If the access succeeds, a dial tone returns from the repeater. If the AUX key is pressed again when the queue tone is sounding, this mode is canceled.

If the access fails after 60 seconds, a deny tone is output and this mode is terminated. When the talk ends, the revert system/group returns. When the scan mode is effective, the scan resumes. feature can be programmed to turn on or off for each system.

3-20. Audible User Feedback Tones

The transceiver outputs various combinations of three tones (high, mid, and low) to notify the user of the transceiver operating state. The main tones are

I

listed below. The h~gh tone is 14601iz, the mid tone is 980Hz, the and low tone is 730Hz.

Busy tone

This tone is output but no repeater is available and sible. It is output until transmission is enabled while the

Pn button is held down and transmission starts, or

until the

tone are output alternately in 150nis intervals.)

TEL

(Auxiliary) key by assigning this

TEL' appears on the

(

3

)

to indicate that this mode has been

The AUTO TEL

when the P~TT button 1s pressed

transmission

PTT

button is released. (The mid tone and !ow

is not pos-

Delay tone

Pn

button is pressed

and the repeater is accessed three times or more to

tone is the same as the Busy tone. (It is not output of

CLEAR TO TALK has been set to YES.)

Proceed tone

This tone is output when the transmiss~on starts, and the repeater is connected to indicate that the user can talk if the Clear-to-Talk

Queue tone

This tone is output until the AUTO TEL function is set and the TEL channel is accepted successfully. (The

mid tone on for

1

second intervals.)

Deny tone

This tone is output if the AUTO TEL function is set, the queue tone is output, but the TEL channel cannot

be accessed within 60 seconds. It is similar to the tercept tone. (The alternately in

3-21. Clear-to-Talk

This feature can be programmed to turn on or off.

Clear-to-talk operation (Set to ON)

'

If a dispatch ID is used and the PTT button is

pressed when no repeater can transmit, a busy tone is

not output (it is output when an interconnect ID is used). If transmission becomes possible while the button is held down, transmission starts.

50ms, off for 50ms, and on for 50ms in

m~d tone and low tone are output

150ms intervals.)

Pn

button is pressed,

func-

in-

PTr

Intercept tone

This tone indicates that the'transceiver is out of range. It indicates that the transmission has started, but the repeater cannot be connected and talk~ng the

PTT

button is released, (The mid Tone and low tone

are output alternately in

Pn

button is pressed, and

IS

not possible. It is output until

200nis intervals.)

tput. If transmis-

f'n

button is held

OPERATING FEATURES

3-22.

Conventional System Operation

Up to

250

(MAX) each system programmed as a conventional system. Channels can be selected by the group key.

(~uiet-~alk), DQT (D~gital Quiet-Talk), or carrier

OT

squelch can be set for transmit or receive channels. If signaling is set for transmission, a squelch tail eliminator (reverse burst or turn-off code) is transmitted.

Talk-around

The Talk-around feature can be programmed for

each channel.

Transmit disable (receive-only channels)

Transmission can be programmed to be inhibited for

:

each channel. This feature is used to set receive-only channels. When the ceive-only channel, a busy tone sounds, and transmis-

h

sion is not performed.

Busy channel lockout

The busy channel

grammed for each channel.

by pressing the

if transmission

Scanning conventional systems

For the convent~onal system scan, only the revert channel of each system for the channel, the channels, including signaling, are

scanned.

channels can be programmed for

PTT

button is pressed on a re-

lockout feature can be pro-

If a channel is locked out

PTT

button, a busy tone is output, and

becomes possible, it starts.

IS

scanned. If QTor DOT is set

The KDD-4 can be set group. available:

and the LTR data or signaling matches (when the squelch is open if signaling is not set), the audio is output.

play changes to the systemlgroup display (or alphanumeric display).

group returns.

low during reception and the LTR data or signaling matches (when the squelch is open if signaling is not set), a KDD-4 alert tone is output. flashes (or nothing occurs) according to the CALL indicator set for each group.

ate unless the Decode Latch input port goes high.

at the system. The display shows "-SCAN-" until the

Decode Latch input port goes low. When the

goes low, the system/group is displayed.

If it is

Audio mute

If the decode latch Input port is low during reception

During

Call indicator, alert tone

If the Decode Latch input port changes from high to

The CALL

Operation during scan

If signaling matches during scanning, the scan stops

supporled, the following features are

systemlgroup scanning, the "-SCAN-" dis-

If it is the last call, the revert system/

indicator1KDD-4 alert tone does not oper-

with the decode ID of each

CALL lights or

port

3-23.

External Decoder (KDD-4 Option)

The optional DTMF decoder (KDD-4) ca

in the transceiver. Use of the optional dec

programmed for each group (for each

ventional system). The monitor key fun

external decoder reset key

chan

r---------

I

I i

I

I I

I I I

I' I

I

:I

I

------

KDD-4

----

Fig.

3

TK-9401941

------,

-

----

-------

-------,I

OPERATING FEATURES

3-24. Horn Alert

Horn alert can be set to Elther cont~nuous or set by the FPU d~sabled as follows,

Enable D~sable

.

Non-continuous

If Horn alert has been set to YES for a group and

DEC

ID/OT/DOT matches, the horn alert port, HOR, is

turned on and off as follows;

The timing when the fixed LTR ID matches is as

follows;

The group for which the optional signaling is set

works by

signaling.

Continuous

Reset with the AUX key or by setting offhook

ANDing the decode

non-continuous

The horn alert port

IDIQTIDQT

on

match

or

off for each group

operation

IS

enabled or

HOR

4

ID

with the optional

1

can be

3-25. System Scan

Fix

system scan

AII

the set systems except locied-out ones are

scanned AUX key,

List type scan

A scan list can be set for each system. The list to be scanned can be changed by changing

the display system.

If many systems have been set, the scan speed can be increased by narrowing the systems to be scanned with scan lists.

3-26. Data Port

The following ports are available for external equipment when the KCT-I9 is used.

Terminal functions (Digital)

HOR Horn alert port. For

SO

LOK

-

DTC

TXD

RXD

If the

~t can be controlled from the front panel

the Horn alert section. When a carrier is received, 5V is output. When

the carrier disappears, OV returns.

Goes low possible.

I)

When a repeater is linked by LTR.

2)

When transmission is started by pressing

PTT when using LTR in TA mode.

3)

When transmission is started by pressing

PTT in the conventional mode.

When it goes low

system is gone to. When it goes high original group returns, Serial communicat~on output from the internal

MPU to external equipment. Serial communication input from external equipment to the internal

Type

DELIADD feature

(OV) when communication becomes

(OV), the last group in the

details

NIPU.

IS

asslgned to the

of operations see

(5V), the

B

OPERATING FEATURES

C

4.

Transceiver Programming

Ir

4-1.lntroduction

The TK-9401941 IBM PC or compatlbe machlne, a programming Interface

(KPG4), and a programmlng dlsk (KPG-25D)

ure 4 shows the setup for an IBM PC

transceiver

IS

programmed uslng an

Fig-

..

Programming

4-2.

KPG-4 Description

(Optional PC programming interface cable)

The KPG-4 is reeded to connect the TK-9401941 to

the computer. It has a circuit in the D-subconnector

(25-pin) case that converts the RS-232C logic level to

TTL

level. The KPG-4 plug is connected to external socket of the TK-9401941 and to the computer by a conversion cable (option) with a 9-pin female connector and a 25-pin male connector.

4-3.

Programming Software Description

KPG-25D is the programmlng software for the TK-

9401941, supplled on a 3 5" or 5.25" floppy disk Thls software runs under MS-DOS (vers~on 3.3 or later) on

an

'

IBM /XT, AT, or PS2, or on a compatible mach~ne Data car, de Input to or read from the TK-9401941, and ed~ted on the screen Programmed data can be

disk

(KPG-25D)

Fig. 4

4-4. Data Program Mode

In thts mode, data In the transceiver, When the power program mode can be entered

IS

KPG-4

"PROGRAM" mode has been entered

Tunlng can be done uslng an IBM PC and KPG-25D,

In the same way as In panel tun~ng mode You can

carry out panel

KPG-25D menu screen and

on the screen See the KPG-25D Instruction manual for

connected and commands can be received,

IS

detalls

IS

wr~tten Into the flash memory

IS

turned on, data

~mmedlately. When the

displayed

tunlng by select~ng test mode on the

to ~nd~cate that data program

follow~ng the ~nstructions

OPERATING FEATURES

4-5.

Clone Mode (Figure

Programmed data is transferred from one

transceiver to another by using a microphone cable.

1.

Connect the master set to the slave set with.

2.

Turn the slave set on

3.

Hold down the AUX key, turn the master set on, and keep the AUX key down for two more seconds. "CLONE" appears on the display to indicate that clone mode has been entered.

4.

Press the SCAN key on the master set.

The

a

mark appears and data is sent from the

master set to the slave set. "PROGRAM" appears

on the slave set to show that it is receiving data.

5.

When cloning is complete, the

master set disappears and "END". The slave set is automatically reset and enters user mode.

If cloning fails, the master set shows "ERROR".

Repeat steps

If you wish to clone several sets, switch each of

them

on and reDeat 4 and

4

and

5.

51

a

"CLOIVE" changes to

5.

mark on the

5.

Description of Each Modes

5-1.

Dealer mode

To enter this mode, hold down the GROUP UP key, turn the transceiver on, and keep the GROUP UP key down for two more seconds The mode can be

inhibited by programming.

SYSTEM key

Used to select one of programmed frequencies 1 to

If no frequency data has been preset, the

16.

frequency listed in Table

value.

1

is written as the default

Fj

1

OPERATING FEATURES

.

GROUP key

Used to select the signal~ng encodeldecode data or

squelch adjustment.

-

GROUP

*

Area : 0. Goto : 12, Home . 12, ID : 47, Free

None (No decode; squelch can be adjusted.)

1 2 3

4

5

6

7

8

AUX key

--

100H: sqilare wave

----

LTR

format' (Decode; squelch cannot be adjusted.) QT (67,OHz) (Decode; Squelch cannot be adjusted..) QT

(1

51.4Hz) (Decode; squelch cannot be adjusted.)

QT (210.7Hz) (Decode; squelch cannot be adjusted.)

(023N) (No decode; squelch cannot be adjusted.)

DQT DOT (754N) (No decode; squelch cannot be adjusted.)

When the AUX key is pressed, talk-around is

enabled (the

"TAN indicator appears), and transmission is possible on the receive frequency. When the key is pressed again, talk-around is disabled.

SCAN key

When this key is pressed, the squelch is turned off.

If a carrier is not present, white noise is heard. The "BUSY indicator appears.

TONE

(No

decode; squelch can be adjusted

:

25

Table

2

)

5-2.

Panel Tuning Mode

This mode can be inhibited by programming. The

following can be adjusted with the front keys:

Squelch level QT fine deviation

.

DQT fine deviation

LTR

ID fine deviation RF power DQT balance Maximum deviation Frequency

(TX)

The mode is entered when the GROUP DOWN key

is held down, the power turned on, and the key kept down for two more seconds. The display changes from "TUNING" to

"800MHz" (TK-940) or "900NIHzU

(TK-

941), and then back to the systemlgroup number indication.

Select the frequency to be adjusted by pressing the

SYSTENI key when the systemlgroup number is being

displayed, then press the SCAN key. Adjustment

is

mode

varied between 1 to

SYSTEM key

entered and the adjustment level can be

256.

Used to select the frequency or items to be

adjusted

Transmission

The microphone PTT key is used to start

transmission. When the frequency and signaling have

been selected

wirh the SYSTEM and GROUP keys,

transmission begins and the "TX" indicator appears. The time-out-timer does not work.

GROLIP key

Used to select signaling encodeldecode data or the

.

adjustment level.

AUX

key

Used to determine the adjustment level. Select the

level with the GROUP key and then press the AUX key.

The adjustment level is written into the internal serial

EEPROM.

SCAN key

Used to sw~tch between adjustment frequency

variable mode and adjustment level (item) mode.

Volume key

Used to vary the volume or adjust the AF power

level.

1.

Installing the Signaling Unit

INSTALLATION

(KDD-4

1-1.

KDD-4

1.

Solder the 9-pin leads with connector to the KDD-4

board locations designated with the unit

specification numbers. (Fig.

D'TMF

assembly

:

Option)

1)

Fig.

1

2.

Put an insulating tube around the KDD-4 board and heat it so that the tube encases the board. (Fig.

2)

INSTALLATION

1-2,

Installing the

I.

Remove the two halves of the case transceiver and

the control panel.

KDD-4

(Fg.

in the transceiver

3)

2,

Install the

1)

Attach the pad to the

2)

Plug the RX unit

3)

Attach the

4)

Reinstall the panel and the two halves of the cases.

KDD-4

(BIZ)

( 0 ).

KDD-4

on the TX-RX unit

KDD-4

connector into

to the TX-RX unit

(

0

(B12).

).

CIV203

(0).

(Fig.

4)

of the TX-

Fig.

3

Cornpon.:-

cide

Fig.

4

INSTALLATION

1-3. Setting the KDD-4 code (DTMF)

This product tion techniques. The solder jumpers used to configure this product should be changed using equipment-and techniques suitable Abuse due to the use of inappropriate tools and techniques will

I

IS

VOID

the warranty.

0

3

7

-7777

bu~lt using surface mount construc-

for surface mount device repair.

*

3

,mr.m

7

3333 3 3

u,

m

7

1

MONIRESET

I

JU2

JU3

Shorted Open Shorted

Open Shorted

>

1

ON-HOOK OFF-HOOK

1

Shorted Open c~rcu~t

JUJ

E A

A

C C

MUTE URIMUTE

Sources Open

HCMOS HCMOS LO (OVdc)

(+)

circuit

HI

"-

supply

(5Vdc)

1

(--I

supply

(-1

(+)

supply

(OVdc)

Sinks to

Open circuit Sources HCMOS LO HCMOS HI (5Vdc)

Fig.

5

2.

Accessory Connection Cable

:

(KCT-19

The

KCT-I9

connecting external equipment. The connector has

Option)

is an accessory connection cable for

15

pins and the necessary signal lines are selected for use.

2-1. Installing the KCT-19 in the transceiver

1.

Remove the upper and lower halves of the

transceiver case, and lift the

DC

cord bushing

(0)

from the chassis.

2.

Remove the pad

( 0 ).

Table 1 Jumper setup charts

Fig.

A

6

3.

Insert the KCT-19 cable

The wire harness band

(

0)

into the chassis

(0)

must be inside the

chassis.

4.

Relocate the

5.

Connect the KCT-I9 to the TX-RX unit shown

6.

Connect the KCT-19 inserting the crimp terminal

plug

(0

DC

cord bushing

in

Figure

7

i 0 1.

to

),

both of which are supplied with the KC7~-

in

the chassis

i!le external accessory by

(0)

into the square

19.

INSTALLATION

2-1.

(

0)

(0).

(A121

as

Terminal

No.

(A)

No. lB,C,DI

A-

1

A-2

A-5

1

A-9 D4 Dl 1 Data mod innut

A-I 2

I

A-I3 A-I 4

-

A-I

5

Refer to Term~na function on page 63, ~f need description in detail. The functions of A-14 and A-I5 are changed, if the connector connected to

D-2 D-5

D-6

8-2

E-I

E-2

-

E-3

CN2 or

function

-

Narne

HK ME

HOR SQ SP LOK Link corn~lete o~~toili

RE

MM

TXD Serial control data

(

DTC I Data

CN3

--

MC hook input MICGND

Detect output MIC input

GND

DC

supp=~)

PTT inout

~

Horn AlertICall output Squelch output Audio outwut

Serial control data input MIC mute input

PTT

of the radio.

Function

,---

,

input

---

-

r-.

outwut

-

I

E

are

Crimp

terminal

(E23-0613-05)

RXD

DTC TXD

rnal speaker connector, if use external speaker.

(E09-1571-05)

Fig,

INSTALLATION

3.

Ignition Sense Cable (KCT-18 : Option)

The KCT-18 is an optional cable for enabling the ignition function. The ignition function lets you turn the power to the transceiver on and off with the car ignition

key.

If you use the Horn Alert function (KDD-4 requ~red) or the Manual Relay function, you can turn the function off while driving with the ~gnit~on key.

3-1.

Connecting the

1. Install the KCT-19 in 19 section.)

2.

Insert the KCT-18 lead terminal

square plug insert the square plug into the KCT-I9 connector

(0

1.

3-2.

Modifying

Modify the transceiver as follows to turn the power

or the Horn Alert or Manual Relay function on and off with the ignition key.

1. Remove the lower half of the transceiver case.

2.

Set jumper resistors unit

(A/2)

as shown in Table

KCT-18

(0

supplied with the KCT-19, theri

the transceiver

to the transceiver

the

transceiver (See the KCT-

(Q)

into pin 3 of the

(On)

R5

and

R6

of the

2.

TX-RX

Fig.

8

ontact

"$/

KCT-

18

@

1

i

I

j

,

I

1

t

1

k

B.

1

p

I

t

1

i

t

r

i

-

Thr

,-+-

-

'Alert or Manu2: Relay function can be turned on and off only if the function has been

as

-

to the

AUX

',:i..i

.-

-

Table

2

R5

and

R6

setup

chart

t

KCT-18

cannot be connected

+-

Power cannot be turned on

INSTALLATION

p

I

i

I

1

r

4.

External

4-1.

KES-3 : Option

The KES-3

dameter speaker jack

Connection procedure

I. Connect the KES-3 to the 3.5-rnm-diameter speaker

jack on the rear of the transceiver.

4-2. KES-4 : Option

The KES-4 is an external speaker used w~th the

accessory

Connection procedure

1. Install the KCT-19 in the transceiver. (See the KCT19 section.)

2.

Insert the crimp terminal into the square plug

supplied with the KCT-I 9.

3.

Connect CN5 of the transceiver to connector C of the KCT-19 instead of to the internal speaker connector.

Speaker

IS

an external speaker for the 3 5-mm-

connection

cable.

INSTALLATION

5.

Fitting the Control Panel Upside Down

The TK-9401941 control panel can be fitted upside down, so the internal speaker (in llie upper haif of the case) facing down in your car

1. Reniove the control panel and the TX-RX unit !B/2) control section. (Fig. 12)

transceiver

can be niounted with ~ts

Fig.

12

2. Fo1.d the flat cable

3.

Turn the control section

(0

),

and rriount it on the transceiver

4.

Insert the flat cable into control section connector

CN201

5.

Turn the pnel through 180 degrees and mount it on

the transceiver. Refit the two halves of the case to complete installation (Fig.

(0).

(

0

differently

(

(Q

)

through 180 degrees

(0

14)

1.

).

'G'

Fig.

14