and systems, and information security. EFJohnson land mobile radios and systems provides wireless communication for a variety of markets including government, public safety,
and commercial users. Transcrypt’s information security devices utilize sophisticated
scrambling and encryption techniques to protect sensitive voice and data transmissions.
Viking Head/EFJohnson logo and Call Guard® are registered trademarks of Transcrypt
International Incorporated. Smartrunk II™ is a trademark of Smartrunk Systems Inc. All
other company and/or product names used in this manual are trademarks and/or registered trademarks of their respective manufacturer.
Information in this manual is subject to change without notice.
This service manual contains operation, installation, programming, alignment, and service information
for the EFJohnson® 7610 and 7640 mobile transceivers.
1.2 TRANSCEIVER DESCRIPTION
1.2.1 GENERAL
The 7600-series mobile transceivers operate on
conventional (non-trunked) channels. The 7610 operates in the VHF fr equency range of 146- 174 MHz , an d
the 7640 operates in the UHF frequency range of
400-430, 450-470, 470-490, or 488-512 MHz. Up to
32 channels can be programmed. Power output is user
selectable or fixed for the following lev els. Refer to
Section 3.1 for more info rmation on features.
ModelHighLow 1Low 2
7610 (VHF)45W25W4.5W
7640 (UHF)35W20W3.5W
These transceivers are digitally synthesized and
microprocessor controlled. Transceiver programming
is performed using a PC-compatible computer, a special EFJohnson programming cable, and programming software (see Table 1-1). The alignment procedure is performed using this same hardware setup, a
fabricated test cable, and special Adjust software
included with the programming software (see
Section 4).
1.4 PART NUMBER BREAKDOWN
The following is a breakdown of the part number
used to identify this transceiver.
1.5 TRANSCEIVER IDENTIFICATION
The transceiver identification number is printed
on a label that is attached to the chassis. The following
information is contained in the identification number:
1.3 PRODUCT WARRANTY
The warranty statement for this transceiver is
available from your product supplier or from the Warranty Department, EFJohnson, 299 Johnson Avenue,
P.O. Box 1249, Waseca, MN 56093-0514. This information may also be requested from the Warranty
Department by phone as described in Section 1.7. The
Warranty Department may also be contacted for Warranty Service Reports, claim forms, or any other questions conc erning warranties or warranty service.
1.6 ACCESSORIES
The accessories availab le for this transceiver are
listed in Table 1-1.
1.7 FACTORY CUSTOMER SERVICE
The Customer Service Department of EFJohnson
provides customer assistance on technical problems
and the availability of local and factory repair facilities. Regular Customer Service hours are 7:30 AM. -
November 1998
1-1
Part No. 001-7600-001
GENERAL INFORMATION
5:30 PM. Central Time, Monday - Friday. The
Customer Service Department can be reached using
one of the following telephone numbers:
Toll-Free: (800) 328-3911
(From within continental United States only)
International: (507) 835-6911
FAX: (507) 835-6969
E-Mail: First Initial/Last Name@efjohnson.co m
(You need to know the name of the person you want to
reach. Example: jsmith@efjohnson.com)
NOTE: Emergency 24-hour technical support is also
available at the 800 and preceding numbers during off
hours, holidays, and weekends.
When your call is answered at EFJohnson, you
will hear a brief mess age informing you of numbers
that can be entered to reach various departments. This
number may be entered during or after the message
using a tone-type telephone. If you have a pulse-type
telephone, wait until the message is finished and an
operator will come on the line to assist you. When you
enter some numbers, another number is requested to
further categorize the type of information you need.
You ma y also contac t the Customer Service
Department by mail. Please include all information
that may be helpful in sol vi ng your problem. The mailing address is as follows:
EFJohnson
Customer Service Department
299 Johnson Avenue
P.O. Box 1249
Waseca, MN 56093-0514
1.8 FACTORY RETURNS
Repair service is normal ly availa ble through local
authorized EFJohnson Land Mobile Radio Service
Centers. If local service is not ava ilable, the equipmen t
can be returned to the fac tory for repair. However, it is
recommended that you contact the Customer Service
Department before returning equipm ent because a service representative may be able to suggest a solution
Table 1-1 75xx Accessories
AccessoryPart No.
Mounting bracket585-7600-040
DC cable assembly585-7600-029
Mounting screws and fuses585-7600-041
Microphone hanger 023-3514-001
Mic hanger ground wire023-7171-911
Function name stickers585-7600-042
Programming software, 3-1/2 disk585-7600-030
Programming cable, computer-adapter585-7500-031
Adapter cable, prog cable-xcvr585-7600-031
Replication (cloning) cable597-2002-200
DB-9 M to DB-25 F adapter515-9000-015
to the problem so that return of the equipment would
not be necessary.
Be sure to fill out a Factory Repai r Request Form
#271 for each unit to be repaired, whether it is in or
out of warranty. These forms are avai lable free of
charge by calling Customer Service (see Section 1.7)
or by requesting them when you send a unit in for
repair. Clearly describe the difficulty experienced in
the space provided and also note any prior physical
damage to the equipment. Then include a form in the
shipping container with each unit. Your telephone
number and contact name are important because there
are times when the technicians have specific questions
that need to be answered in order to completely identify and repair a problem.
When returning equipment for repair, it is also a
good idea to use a PO number or some othe r reference
number on your paperwork in case you need to call the
repair lab about your unit. These numbers are referenced on the repair order and it makes it easier and
faster to locate your unit in the lab.
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1-2
GENERAL INFORMATION
Return Authorization (RA) numbers are not necessary unless you have been given one by the Field
Service Department. RA numbers are required for
exchange units or if the Field Service Department
wants to be aware of a specific problem. If you have
been given an RA number, reference this number on
the Factory Repair Request Form sent with the unit.
The repair lab will then contact the Field Service
Department when the unit arrives.
1.9 REPLACEMENT PARTS
Replacement parts can be ordered directly from
the Service Parts Departmen t. To order parts by phone,
dial the toll-free number as described in
Section 1.7. When ordering, please supply the part
number and quantity of each part ordered. EFJohnson
dealers also need t o g ive t heir a ccount number. If there
is uncertainty a bout t he part number, include the desig-
nator (C512, for example) and the model number of
the equipment the part is from.
You may also send your order by mail or FAX.
The mailing address i s as follows and the FAX number
is shown in Section 1.7.
EFJohnson
Service Parts Department
299 Johnson Avenue
P.O. Box 1249
Waseca, MN 56093-0514
1.10 INTERNET HOME PAGE
EFJohnson has a si te on the World Wide Web that
can be accessed for information on the company and
such things as products, systems, and regulations. The
address is h ttp://www.efjohnson.com.
1-3
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GENERAL INFORMATION
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Part No. 001-7600-001
1-4
GENERAL INFORMATION
7610 (VHF) AND 7640 (UHF) MOBILE SPECIFICATIONS
The following are general specifications intended for use in testing and servicing this transceiver. For current
advertised specifications, refer to the specification sheet available from your sales representative. Values are
typical and are subject to change without notice.
performance degradation from 488-490 MHz with 488-512 MHz models)
Operating ModesConventional (non-trunked), Tone and digital Call Guard® squelch
Channels32 maximum (2 banks x 16 channels available)
Transmit/Receive SeparationAny frequency within the range
Channel Spacing (dual IF Models) VHF - 12.5 kHz (narrow band) and 30 kHz (wideband)
UHF - 12.5 kHz (narrow band) and 25 kHz (wideband)
Maximum Deviation12.5/15 kHz channel spacing - 2.5 kHz maximum
25 kHz channel spacing - 5.0 kHz maximum
Frequency Stability5.0 PPM (VHF), 2.5 PPM (UHF) from –22° to +140° F (–30° to +60° C)
Dimensions (w/o controls)1.6” H x 5.5” W x 6.7” D (4.1 cm x 13.9 cm x 17.0 cm)
Weight2 lb. 11 oz. (1.22 kg)
Supply Voltage13.6 volts DC nominal (12-volt, negative ground vehicle electrical system)
Current Drain (maximum)Standby - 200 mA standby
Receive (rated audio out) - 700 mA
Medium Tx Power - 6.0 A (VHF), 7.0 A (UHF)
High Tx Power - 15 A max/10 A typ (VHF), 11 A max/8 A typ (UHF)
FCC ComplianceParts 15 and 90
RECEIVER
Sensitivity (12 dB SINAD)0.25 µV
Selectivity70 dB at 25 kHz, 60 dB at 12.5 kHz
Spurious and Image Rejection70 dB
Intermodulation65 dB
Hum and Noise46 dB at 25 kHz, 40 dB at 12.5 kHz
Maximum Frequency SpreadAny spread within the range
Audio Power Output3.5 W into 4-ohm load
Audio DistortionLess than 10% at 1 kHz with 60% deviation
Audio Response+2, –8 dB at 6 dB per octave de-emphasis
RF Input Impedance50 ohms
UHF: 35W (high), 20W (low 1), 3.5W (low 2)
Spurious and Harmonic Emissions 70 dB
FM Hum and Noise46 dB at 25 kHz, 40 dB at 12.5 kHz
Audio Modulation12.5 kHz - 11K0F3E, 25 kHz - 16K0F3E
Audio DistortionLess than 5% at 1 kHz with 40% modulation
Audio Frequency Response+2, –8 dB at 6 dB per octave pre-emphasis
Maximum Frequency SpreadAny spread within the band
RF Output Impedance50 ohms
Duty Cycle20% TIA
1-5
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Part No. 001-7600-001
GENERAL INFORMATION
NOTES
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Part No. 001-7600-001
1-6
SECTION 2 INSTALLATION AND DISASSEMBLY
Optional Accessory Cable
P.N. 585-7600-027
DB-9 Female
INSTALLATION AND DISASSEMBLY
External Spkr Jack
UHF-Type
Ant Jack
10-Ft. Power Cable
Optional External Speaker
P.N. 250-0151-010
Figure 2-1 Installation Components
2.1 GENERAL
2.1.1 SCOPE OF INSTRUCTIONS
Since each installation is somewhat unique, the
following install at ion instructions are intended only as
a general guide to installing this transceiver.
2.1.2 PERFORMANCE TESTS
Although each transceiver is carefully tested at
the factory before shipment, it is good practice to verify proper operation before it is placed in service.
Important checks are receiver sensitivity and transmitter frequency, deviation, and power output.
Red (+)
Black (–)
20A Fuses
factory test channels and other test parameters when
they are shipped. The included labels should be
attached to the option keys to indicate the function.
2.1.4 POWER SOURCE
This transceiver must be connect ed to a nominal
12 VDC, negative ground vehicle electrical system
(negative battery terminal connected directly to the
chassis). If the vehicle has some other type of electrical system, a suitable voltage converter is required.
2.2 TRANSCEIVER INSTALLATION
2.2.1 SELECTING MOUNTING LOCATION
2.1.3 TRANSCEIVER PROGRAMMING
The transceiver needs t o be pr ogrammed be fore i t
is placed in service. Programming instructions are
located in Section 4. Transceivers normally contain
This transceiver is designed for mounting in a
location within convenient reach of the operator such
as the dash, console, or floor. Since the mounting location can affect safe operation of the vehicle, observe
the following precautions:
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Part No. 001-7600-001
INSTALLATION AND DISASSEMBLY
Figure 2-2 Mounting Bracket Installation
WARNING
•
Do not mount the transceive r where it may int erfere with the operation of vehicle controls.
•
Do not mount the t ransceiver whe re the use r cannot easily reach the controls and view the
display.
•
Do not mount the t ransceiver where it may cause
additional injury in case of an accident.
•
Air bags inflate with great force. Therefore, do
not mount this transceiver in the deployment
area of an air bag. In addition, do not place other
objects in the deployment area or other locations
where they could unintentionally move into the
deployment area.
2.2.2 INSTALLING MOUNTING BRACKET
2.2.3 INSTALLING MICROPHONE HANGER
Install the included microphone hanger in a convenient location. For proper operation of functions
such as monitoring and scanning, the hanger may need
to be connected to chassis ground. If required, ground
the hanger using the included grounding wire.
2.3 POWER CABLE INSTALLATION
2.3.1 GENERAL
It is recommended that both wires of the power
cable be connected directly to the vehicle battery. Connection of either wire to other points m ay result in
increased interference from the vehicle’s electrical
system. If noise is sti ll a prob lem, t ry inst alli ng a noise
filter.
Check the area behind the intended mounting
location for wiring, brake and gas lines, or other components that could be damaged when the mounting
screws are installed. Th en install the b racket and tra nsceiver as shown in Figure 2-2. Both standard and selftapping screws are included for installing the bracket.
November 1998
Part No. 001-7600-001
2.3.2 CABLE INSTALLATION
1. Before starting power cable installation, it is good
practice to remove the negative cable from the battery to prevent damage from accidental short
circuits.
2-2
INSTALLATION AND DISASSEMBLY
DB-9 Female Connecto r
Outside View
2. Route the red and black wires from the transceiver
to the batte ry. Connect the red wire to the positive
(+) terminal and the black wire to the negative (–)
terminal.
3. Plug the cable into the pigtai l coming from the transceiver and reconnect the negative battery cable.
4. Install the antenna according to the manufacturer’s
instructions. The transceiver has a standard UHF
connector. Check VSWR. Reflected power should
be less than 4% of forward power (VSWR less than
1.5 to 1).
2.3.3 POWER CABLE FUSES
Each power cable wire is protected by a 20ampere fuse. Thes e fuse s are inspec te d and ch anged a s
shown below. If a fuse blows, locate the cause if possible and replace it with one of the same rating.
input that can be used to control the backlight (see
Section 3.3.9). This cable is installed as shown in
Figure 2-3.
This cable has a standa rd DB-9 female connector
for interfac ing to external equipment. The pin numbering and functions are as follows:
DB-9 PinFunction
1LCD backlight control in
2AF out
3Detected AF out
4Modulati on in
5PTT control in
6Horn drive control out
7AF ground
8Detected AF ground
9Modulati on ground
Changing 20-Ampere Power Cable Fuses
2.4 USING AN EXTERNAL SPEAKER
An external speaker can be plugged into the
external speaker jack on the back of the transceiver.
This speaker should have an impedance of 4-8 ohms
and a power handling capability of at least 3.5 watts.
The internal speaker is a utomatically disabled when a
speaker is plugged into this jack. The external speaker
jack is a standard 1/8-inch, two-conductor phone jack.
2.5 ACCESSORY CABLE INST ALLATION
Optional Accessory Cable, Part No. 585-7600027, can be used for connecting accessories such a
horn alert or modem to the transceiver. It also has an
Figure 2-3 Accessory Cable Installation
2-3
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Part No. 001-7600-001
INSTALLATION AND DISASSEMBLY
2.6 TRANSCEIVER DISASSEMBLY
Removing Bottom Cover and Front Panel
1. Remove the bottom cover b y removi ng four sc rews
(A) as shown in Figure 2-4.
2. Remove the front panel by removing two screws
(B).
Figure 2-4 Cover and Front Panel Removal
Removing PC Board
3. Remove ten screws (C) a nd t wo c li ps (D) as shown
in Figure 2-5.
4. Remove shield (E).
5. Unsolder the antenna connector at three points (F).
Figure 2-5 PC Board Screws
Figure 2-6 Removing PC Board
6. Lift the front of t he PC bo ard assembl y as shown in
Figure 2-6 and pull it out.
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2-4
INSTALLATION AND DISASSEMBLY
2.7 2-T ONE/5-TONE MODULE INSTALLA TION
2.7.1 INSTALLATION PROCEDURE
1. Turn power off and disconnect the power cable.
2. Remove the bottom cover by removing the four
screws (A) shown in Figure 2-5.
3. Install the module as shown in Figure 2-7. The
included foam pad is not used with this transceiver.
Screen Menu
program an option key or the microph one hanger
for the monitor function s o that the decoder can
be re-activ ated when the call is complete (see
Table 4-2).
2.7.3 5-TONE PROGRAMMING
Program the transceiver for operation with a fivetone module as described in Section 4. Screens that
need to be programmed with five-tone decoder information are as follows. Refer to on-line help for information on parameters in these screens (press F1 wit h
parameter selected).
Model Menu
Section 4.4.6).
Select the following in the Screen Menu:
•
“Rx Code CH” and program the information in
the screen (see Section 4.5.2).
- Select “Key & Displa y Assign” and
- “PMR” must be selected (see
Figure 2-7 2/5-Tone Module Installation
2.7.2 2-TONE PROGRAMMING
Program the transceiver for operation with a twotone decoder as described in Section 4. Screens that
need to be programmed with two-tone decoder information are as follows. Refer to on-line help for more
information on parameters in these screens (press F1
with parameter selected).
Model Menu
Section 4.4.6).
Screen Menu
program the information in the screen (see
Table 4-6).
Screen Menu
gram the information under “2Tone Dec” for
each channel on which the decoder wil l be use d
(see Table 4-1).
- “LMR” must be selected (see
- Select “2Tone Code CH” and
- Select “Memory Channel” and pro-
•
“Tx Code CH” and program the information in
the screen (see Section 4.5.2).
•
“User Tone” and program the info rmatio n i n the
screen (see Section 4.5.2).
•
“Memory CH” and program the parameters in
this screen that are related to 5-tone operation on
the channel (see Fi gure 4-2).
NOTE: If performing the deviation adjustment in
the next section, the long tone must be turned on in
RPT/STN/ID on the Memory Channel screen.
•
“Key & Display Assign” and program Tx Code
and Call switches for use in transmitting 5-tone
codes.
Setting 5-Tone Deviation
The only adjustment on the 2/5-tone module is a
potentiometer for setting the transmit tone deviation
for 5-tone operation. This control is factory preset and
should not require readjustment in the field. However,
if adjustment is required, proceed as follows:
2-5
November 1998
Part No. 001-7600-001
INSTALLATION AND DISASSEMBLY
1. Monitor the transmi t si gnal wi th a communications
monitor. Set it for HPF = Off, LPF = 20 kHz, Deemphasis = Off, and Level = (P-P)/2.
2. Select a channel near the ce nter of the band and turn
a long tone on (see precedi ng “NOTE”) by pressin g
the appropriate front panel key.
3. Adjust potentiometer R18 (DEV) on the module for
the following deviation:
4. Check channels on each end of the operating band to
make sure deviation is within the following
limits. If not, repeat preceding adjustment.
25 kHz Channel Spacing - ±3.0 to 5.0 kHz
20 kHz Channel Spacing - ± 2.4 to 4.0 kHz
12.5 kHz Channel Spacing - ±1.5 to 2.5 kHz
NOTE: It is recommended that scanning not be used
with these options because in may cause part or all of
the tone burst to be missed.
November 1998
Part No. 001-7600-001
2-6
SECTION 3 OPERATION
OPERATION
Volume
Down
VolumeUpTransmit
Microphone
Connector
Busy
Indicator
Scan List
Indicator
* The Channel Up/Down switches can also be programmed for other functions.
Indicator
Programmable Option Switches
Bell
Indicator
Monitor
Indicator
Alphanumeric
Display
Channel
Up*
Channel
Down*
Power
Switch
Figure 3-1 7600 Front Panel
3.1 FEATURES
•
Up to 32 channels programmable
•
Multi-tone (CTCSS) and/or Mul ti-code (CDCSS)
Call Guard® squelch programmable
•
VHF and UHF, wideband and narrowband models
available
•
Up to 45 watts VHF and 35 watts UHF transmitter
power output
•
Seven-character alphanumeric display with backlight
•
Six programmable option ke ys
•
Busy indicator
•
Normal and priority scan to ensure that calls are not
missed
•
Up to five different user programmable scan lists
selectable
•
Bank select available (up to two banks with sixte en
channels each)
•
User selectable power output available
•
DTMF microphone optional
•
2-tone/5-tone signaling optional
NOTE: Some of the preceding features are available
only if programmed.
3-1
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Part No. 001-7600-001
OPERATION
3.2 CONTROLS AND DISPLAY
3.2.1 FRONT PANEL CONTROLS
Power Switch (
- Press this switch to turn power
)
on and press and hold it to turn power off. The transceiver may be progr ammed so th at a passwor d must be
entered to allow operation. Refer to Section 3.3.2 for
more information.
Volume Up/Down Keys () - Adjust the volume level up or down in up to 32 steps. The minimum
selectable volume level can be set as desc ribed in
Section 3.3.3.
Up/Down Keys () - These keys may be programmed to select the next higher or lower channel or
for other functio ns. Ref er to th e descri ption s in Sect ion
3.5 for more information.
Microphone Connector - Connection point for the
microphone. Do not connect microphones other than
standard microphone P.N. 589-7600-020 and DTMF
microphone P.N. 589-7600-022 to this transce iver. The
pin assignments could be different and damage to the
microphone or transceiver may result.
F1/F2/F3/F4 - These keys ca n be programmed to control any of the fu nctions desc ribed in Section 3.5. Place
the applicable included label on the switch to indicate
its function.
Monitor Indicator () - Indicates that the monitor
mode is enabled. This mode disables coded squelch
control so that all messages occurring on the channel
are heard. Refer Section 3.4.4 for more information.
Display - This seven-character display indicates the
selected channel, status information, and error conditions. If information in this display begins flashing, an
error condition is indicated. Two possible causes are a
defective antenna or a battery voltage below 8 VDC.
3.2.3 BACK PANEL
External Speaker Jack - Miniature phone jack for
connecting an optional 4-8 ohm external speaker. The
internal speaker is automatically disabled when a
speaker is p lugged into this jack.
Antenna Jack - UHF-type jack for connecting the
antenna.
DC Power Cable - Connects the transceiver to a nominal 12 VDC, negative ground vehicle power source.
Refer to Section 2-1 for more information.
Accessory Cable - This optional cable is used to connect accessories such as a horn alert and modem to the
transceiver. Refer to Section 2-1 for more information.
Ext Speaker
Jack
Antenna
Jack
3.2.2 DISPLAY
Transmit Indicator () - Indicates that the transmitter is keyed or the 5-t one code is being sent (if appli cable). If this indicator is flashing, the internal
temperature is high and the tr ansmitter power output is
being cut back. Normal operation automatically
resumes when the tempera t ure returns to the normal
range.
Busy Indicator () - Indicates the currently selected
channel is busy (see Section 3.4.4).
Bell Indicator () - Appears or flashes when a
5-tone call is detected that the transceiver is
programmed to receive.
November 1998
Part No. 001-7600-001
Optional
Accessory Cable
Transceiver Back Panel
3.3 BASIC OPERATION
3.3.1 TURNING POWER ON AND OFF
When power is turned on by pressing the
POWER switch, a tone sounds and an opening message is displayed if programmed. The transceiver is
3-2
DC Power
Cable
OPERATION
then ready to be used. To turn power off, press and
hold the POWER switch until power turns off.
3.3.2 ENTERING A PASSWORD
The transceiver may be programmed so that a
password must be entered before the transceiver can
be used. When power is then turned on, “PWORD” is
displayed and the fo ur- di g it pas sc ode mus t be entered.
This code is entered using the F1-F4 and channel
down () keys. The number entered by each key is
as follows. The numbers in a block are detected as the
Key
Number
Entered
F
0
5
F
1
1
6
F
2
2
7
F
3
4
3
8
4
9
same. For example, “1234” is the same as “6789”. If
the “PWORD” indication does not turn off after entering four digits, you may have entered an incorrect
number. Cycle transceiver power and try again.
3.3.3 VOLUME LEVEL ADJUSTMENT
and then again to return to the normal channel
display.
F1 - Minimum volume level (see Section 3.3.3)
F2 - Key beep on-off (see Section 3.5.4)
F3 - Backlight on-off (s ee Section 3.5.2
F4 - Squelch adjust (see desc ription whic h follows)
3. To return the F1-F4 keys to the programmed functions, turn transceiver power off and on again without pressed.
3.3.5 CHANNEL SELECTION
Channel Scrolling - If the keys are pro-
grammed as or keys, they can be
CH UPCH DN
pressed to scroll up or down through the programmed
channels.
Direct Selection - The F1-F4 and keys can
be programmed to directly select a specific channel.
These keys are then labeled to .
CH 1CH 4
The volume can be adjusted in up to 32 steps by
pressing the volume up/down keys (). A
graph in the alpha numeric di splay indi cates t he current
volume level. If eq uipped wit h a option switch,
MONI
you may be able to press (or press and hold) that
switch to enable audio for use as a reference level.
The minimum selectable volume level can be set
by the power-on menu descri bed in Section 3.3.4.
Select this mode and then press F1 to display
“AFMIN”. Then press the volume up/down keys to
select the desired minimum level. The current level is
indicated by the bar graph, or receiver noise can be
enabled as described in Section 3.3.6.
3.3.4 POWER-ON MENU
The power-on menu is a special menu that can be
selected at power on to control various functions.
Proceed as follows:
1. Select the power-on menu by turning power on wit h
the up and down keys pressed.
2. The F1-F4 keys now control the following func-
tions. Press the switch once to select the function
3.3.6 ADJUSTING SQUELCH LEVEL
The squelch level is adjusted by programming or
selecting the power-on menu just described. Proceed
as follows to use the power-on menu:
1. Select a non-busy channel. Then select the power-
on menu by turning power on with t he up an d down
keys pressed.
2. Press the F4 option key to select the squelch adjust
mode indicated by “SQ xx”.
3. Press the down key until noise is heard from
the speaker (adjust the volume if necessary). Then
press the up key until the noise just mutes (the
“SQ xx” number indicates the relative squelch
level).
4. Reselect normal operation by turning p ower off a nd
on without the up and down keys pressed.
NOTE: If weak messages are not heard or unsquelching occurs when no messages are present, slight readjustment up or down may be required.
3-3
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Part No. 001-7600-001
OPERATION
3.3.7 BANK SELECT
Two banks of up to 16 channels each can be programmed. Only the channels in the current bank are
then selectable. This would allow, for example, groups
of channels to be programmed for operation in different cities.
The key is pressed to switch between
BANK
banks, and the current bank is indicated br iefly in the
display as “BANK 1” or “BANK 2”. If bank select is
not used, a single block of up to 32 channels can be
programmed.
3.3.8 AUTOMATIC SCAN ENABLE
The transceiver can be programmed so that scanning is automatically enabled whenever power is
turned on or the microphone is placed on-hook. Refe r
to the scan description in Section 3.6 for more
information.
3.3.9 BACKLIGHT ON-OFF
The following backlight modes can be selected
by the option switch or by pressing F3 in the
LITE
power-on menu described in Section 3.3.4.
a microphone with a telephone keypad, or up to seven
telephone numbers also may be preprogrammed and
then selected by pressing the key (see descrip-
DTMF
tion in Section 3.5.7).
3.4.2 RECEIVING A CALL
1. Turn transcei ver power on and set the volume level
as described starting in Section 3.3.1.
2. Select or scan the channe l or channels on which you
want to receive the call. Refer to Section 3.6 for
more information on scanning.
3. When the message is received , take the micropho ne
off-hook and respond. Press the microphone pushto-talk (PTT) switch to talk and release it to listen.
4. When the conversation is finished, place the microphone back on-hook. The microphone hanger may
control features such as scanning and monitoring
that are described later.
3.4.3 PLACING A CALL
1. Turn transcei ver power on and set the volume level
as described starting with Section 3.3.1.
LI ON - On continuously
LI OF - Always off
LI AT - Controlled by the voltage applied to pin 1
of the DB9 connector on the optional accessory
cable (see “Light” in Table 4-2).
3.3.10 BEEP ON-OFF
The key beep which sounds when keys are
pressed can be enabled and disabled by pressing the
option switch or pressing F2 in the power-on
BEEP
menu described in Section 3.3.4. Either “BP ON” or
“BP OF” is displayed to indicate the current mode.
3.4 RECEIVING AND PLACING CALLS
3.4.1 INTRODUCTION
The two calls which can be placed and received
are mobile-to-mobile and telephone calls. With telephone calls, the tele phone number can be dialed using
2. Select the channel on which the call will be made as
described in Section 3.4.
3. Regulations require that the channel be monitored
before transmitting to make sure that it is not being
used by anyone else. If you were to transmit while
someone was talking, you would probably disrupt
their conversation. Refer to “Monitoring Before
Transmitting” description which follows for more
information.
4. If the channel is not busy, press the microph one P TT
switch to talk and release it to listen.
5. When the conversation is finished, place the microphone back on-hook.
3.4.4 MONITORING BEFORE TRANSMITTING
Use one of the following methods to monitor the
channel before transmitting a message:
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3-4
OPERATION
•
Note if the busy indicator () on the front panel
is being displayed. I f it is not, the channel i s not busy
and a message can be transmitted.
•
Taking the microphone off-hook disables coded
squelch control if it is programmed for the monitor
function. Take the microphone off-hook and the
indication should be displayed. If no messages are heard, the channel is not busy and a message
can be transmitted.
•
If the monitor () option switch is pro-
MONI
grammed, pressing it disa bles coded squelch contro l
similar to taking the microphone off-hook. If no
messages are then h eard, the channel is not busy and
a message can be transmitte d. Press the switch again
to disable monitoring.
•
If the Transmit Disable On Bus y feature is pro grammed on the channel, t he trans mitte r is aut omatically disa bled if the channel is busy. This is
indicated by th e display flashing and a rapid beeping
when the PTT switch is pressed.
3.4.5 TIME-OUT TIMER
The time-out timer disables the transmitter if it is
keyed continuously for longer than the programmed
time. If the transmitter is disabled by this feature, the
transmit indicator () turns off and the display
flashes and a beeping tone is produced until the PTT
switch is released.
Table 3-1 Option Key Programmable
Functions
FunctionKey Label
Backlight On-Off3.3.9
Bank Select3.3.7
Beep on-off3.3.10
Call Guard Tone Select3.5.7
Channel Select
DTMF Number Select3.5.7
Emergency Switch3.5.8
Lock enable/disable3.5.9
Monitor Mode Select3.4.4
Output Power Select
Priority Channel Select3.6.3
Receive Attenuate3.5.13
Scan Select3.6
Scan List Programming3.6.2
T a lk -A rou nd Sel ect3.5.16
2-Tone, 5-Tone Calling
Wide/Narrow Ban d
Select
LITE
BANK
BEEP
TONE
CH UP CH DN
CH 1CH 2
CH 3CH 4
DTMF
EMER
LOCK
MONI
HIGH LOW1
LOW2
PRI A PRI B
ATT
SCAN
TAG
TA
CALL CAL A
CAL B TX CH
CODE ID MR
W/N
Description
Section No.
3.3.5
3.5.11
3.5.18
3.5.19
One use of t his feature is to prevent a channel
from being kept busy for an extended period by an
accidentally keyed tr ansmitter. It can also prevent possible damage to the transceiver caused by transmitting
for an excessively long period.
There is also a penalt y timer that may be programmed to prevent further transmissions for the programmed time after the transmitter is disabled.
3.5 PROGRAMMABLE FUNCTIONS
3.5.1 INTRODUCTION
The F1-F4 and keys on the fr ont pa nel
can be programmed for the functions shown in
Table 3-1. A sheet of labels is included with the transceiver , and the applicabl e label should be placed on the
key to indicate its function. Refer to th e section listed
in the table for a descriptio n of the function.
3.5.2 BACKLIGHT ON-OFF
Refer to Section 3.3.9.
3.5.3 BANK SELECT
Refer to Section 3.3.7.
3.5.4 BEEP ON-OFF
Refer to Section 3.3.10.
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Part No. 001-7600-001
OPERATION
HIGH
PRI A
PRI B
3.5.5 CALL GUARD TONE SELECT
If the transceiver has a key, the Call
TONE
Guard (CTCSS) tone can be selected. This allows calls
to be placed to different mobiles or groups of mobiles
and received on d ifferent groups than is normal f or the
channel. Proceed as follows:
1. Press the key and “TON--x” is displayed.
TONE
2. Press the channel up/down () keys to
select the desired tone (“TON--1” to “TON--9”).
3. Press the key again to exit this mode. Calls
TONE
are then placed on the current channel and other
channels using the new code until it is changed.
4. To reselect the standard Call Guard squelch tone
programmed for the channel, select “TON--M”
using the same procedure.
3.5.6 CHANNEL SELECT
Refer to Section 3.3.5.
3.5.7 DTMF NUMBER SELECT
transmission begins, the call cannot be canceled. Programming determines the channel on which the call is
transmitted and also if it is transmitted once or repeatedly until a control code is received.
3.5.9 LOCK KEY
Press and hold the key to lock all pro-
grammable keys except and .
LOCK
CALLMONIEMER
Either “LK ON” or “LK OF” is displayed to indicate
the current condition. If a locked key is pressed, all
that happens is “LOCK” is displayed.
3.5.10 MONITOR MODE SELECT
Refer to Section 3.4.4.
3.5.11 OUTPUT POWER SELECT
The and keys can be used
LOW1LOW2
to temporarily or permanently override the programmed power output for the channel. The programming of the “RF Power Selection” param eter in Table
4-2 determines operati on. Pressing the key once
selects the level on the key and pressing it again
selects the programmed level.
If the transceiver has a key, up to seven
DTMF
preprogrammed telephone numbers can be transmitted. Proceed as follows:
1. Press the key and the currently selected
DTMF
number is indicated as “DTMF x”.
2. Press the channel up/down keys () to
select a different number.
3. To transmit the selected number on the current
channel, press and hold the key.
DTMF
NOTE: The DTMF 6 number is used for emergency
calls and the DTMF 7 number is used for automatic
logging. Therefore, if these features are used, the
number may not be available for regular calls.
3.5.8 EMERGENCY KEY
Press and hold the key to transmit an
EMER
emergency call. To cancel th is call before it is transmitted, press and hold thi s key agai n. Once emer ge ncy
3.5.12 PRIORITY CHANNEL SELECT
Pressing selects t he priority A channel
and pressing selects the priority B channel.
The key can also be programmed so that press-
PRI A
ing and holding the key makes the current channel the
priority A channel. Refer to Section 3.6.3 for more
information.
3.5.13 RECEIVE ATTENUATE
Pressing th e key turns receive signal
ATT
attenuation on and off. Either “AT ON” or “AT OF” is
displayed to indicate the current mode. The attenuator
can be turned on if nearby strong RF signals such as
commercial radio stations or pager transmitters are
causing distortion of the receive signal.
3.5.14 SCAN SELECT
Pressing th e key turns the channel scan
SCAN
feature on and off. Refer to Section 3.6 for more
information.
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3-6
OPERATION
3.5.15 SCAN LIST PROGRAMMING
Pressing the key changes the scan list sta-
TAG
tus of the cu rrent channel. Refer to the scan list
description in Section 3.6.2 for more information.
3.5.16 TALK-AROUND SELECT
The talk-around mode causes transmissions to
occur on the receive frequency to permit dir ec t
mobile-to-mobile communication when a repeater is
being used. The talk-around mode is turned on and off
by pressing the key. Either “AR ON” or “AR
TA
OF” is briefly displayed to indicate the current mode.
Changing the channel or turning power off causes talkaround to revert to the off condition.
3.5.17 2-TONE CALLING FEATURES
If the optional 2-tone signaling option is used,
pressing the key transmits the 2-tone codes on
CALL
the selected channel or on a non-busy channel if
pressed while scanning.
3.5.18 5-TONE CALLING FEATURES
If the optional 5-to ne signa li ng opti on is us ed, the
following keys may be pr ogr ammed to control various
functions.
- Transmit the 5-tone call.
CALL CAL A CAL B
Depending on your signali ng system, cal l transmi ssion
may be necessary before you call another station. The
CAL A and CAL B keys may be programmed when
selective Individual/Group calls are used.
- Selects the 5-tone code to be transmitted. To
TX CH
change the contents of the station code, push and hold
this key and then press the keys.
- Selects th e transmit code directory.
CODE
- Recalls last five codes received. Press and
MR CH
hold to erase all codes. To scroll, pr ess .
3.5.19 WIDE/NARROW BAND SELECT
Pressing the key switches the receiver
W/N
between narrowband and wideband operation. The
display briefly indicates “WIDE” or “NARROW” to
indicate the current mode. Each channel can also be
programmed for wide or narrow band operation, and
this switch toggles that setting. However, the change is
only temporary because the programmed condition is
reselected if the c h an nel is changed or power is cycled.
3.6 CHANNEL SCAN
3.6.1 INTRODUCTION
The channel scan f eature monitors t he channe ls in
the current scan list. When a message is detected that
the transceiver is programmed to receive, scanning
stops and the message is received. Shortly after the
message is complete, scanning resum es (after the
resume timer counts down). The selected channel
changes to that of the call.
If the microphone is taken off-hook or the transmitter is keyed while scanning, scanning resumes
when the auto reset timer selected for the channel
counts down. Scanning does restart if this timer is disabled or if the Scan A key is programmed with poweron scan disabled (see Tables 4-2 and 4-5).
Scanning is turned on and off by the key.
SCAN
The transceiver also may be programmed so that scanning automatically turns on whenever power is turned
on or the microphone is placed on-hook. The microphone must be on-hook for scanning to occur.
The decimal point in the di splay flashes when the
scan mode is enabled. Then when scanning is actually
occurring, either the scan list identification (see next
section) or the ra pidly c ycling chan nel ide ntif icati on is
displayed as the channels are scanned. Programming
determines which occurs (see Table 4-5).
3.6.2 SCAN LISTS
Up to five scan lists can be selected by pressing
and holding the key until the scan list identifi-
SCAN
cation appears and then pressing the keys.
Press the key again to exit this mode (this also
SCAN
occurs automaticall y in ab out 30 secon ds) a nd again to
enable scanning (if desired).
3-7
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Part No. 001-7600-001
OPERATION
PRI A
The scan lists are user programmable if the
key is available. Pressing this key changes the
TAG
status of the displayed channel in the current scan list
only. The display indicates “SC ON” if the channel
was just added to the scan list and “SC OF” if it was
just deleted. In addition, the sc an list sta tus is in dicat ed
by the decimal point in t he display. This indicator is on
when the displayed channel is scanned. The decimal
point flashes when scanning is occurring.
The scan list status of a channel can be changed
while scanning only when listening to a message on
the channel. The current status of all the lists is sto r ed
in memory. Therefore, the status of the various scan
lists does not change when power is turned off.
3.6.3 PRIORITY CHANNEL SAMPLING
Priority channel sampli ng en sur es that me ssa ges
on priority channels are not missed while listening to
messages on other channels. If priority sampling is
used, a priority A channel is designated by programming. If the key is available, pressing that key
selects the priority A channel. This key also may be
programme d so that if it is pressed and held, the priority A channel changes to the current channel.
Sampling of the priority A channel occurs only
when scanning is enabled. It does not occur while
transmitting. When the priority channel is sampled
while listening to a message on another channel, a
series of “ticks” are heard. These ticks are brief i nterruptions of the audio signal that occur while the transceiver changes channels to check the priority channel.
Another priority channe l also can be pr ogrammed
that can be quickly selected by the key. This
PRI B
channel is programmed only to allow quick selection
and is not sampled while listening to a non-priority
channel.
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3-8
SECTION 4 PROGRAMMING
Programming Cable
(Includes Le vel Convert. Circuit)
P.N. 585-7500-031
Female DB9 Plug To Computer
PROGRAMMING
Figure 4-1 Programming Setup
4.1 GENERAL
4.1.1 PROGRAMMING SETUP
The following items are required to program this
transceiver. The part numbers of the programming
cable and software ar e shown in Table 1-1. A printer is
also recommended for making a hard copy record of
the information programm ed into the transceiver. The
programming setup is shown ab ove.
•
IBM® PC AT or PS/2 compatible computer with
one available serial port
•
MS-DOS® version 5.02 or higher or equivalent
•
E.F . J ohnson programmin g cable (inclu des require d
level converter circuit) and adapter cable
•
E.F. Johnson programming software
4.1.2 PROGRAMMING CABLES
Programming Cable, Part No. 585-7500 -03 1, and
Adapter Cable, Part No. 58 5-7600- 031, are r equire d to
Adapter Cable
P.N. 585-7600-031
connect the computer to the transceiver. The programming cable has a female DB9 connector which plugs
into the serial port of the computer. In this connector is
a level converter circuit which converts the RS-232
levels of the computer to the logic levels required by
the transce i ver. The other end of th e cable plugs into
the adapter cable which adapts the miniature phone
plug to the modular-styl e microphone conne ctor on the
transceiver. Turn transceiver power on after these
cables are connected.
4.1.3 PROGRAMMING SOFTWARE
The programming software is distributed on a
3-1/2” 1.44 M diskette. Th is disket te incl udes the mai n
executable program RP7600.EXE and several ancillary files it requires to run. These files total approximately 430k in size. Also included on this disk is the
ADJUST program used to tune the transceiver. This
program and other files it requires to run total about
180k in size and are located in a separate subdirectory
4-1
November 1998
Part No. 001-7600-001
PROGRAMMING
on the disk called ADJ. The use of this program is
described in Section 5.
These are DOS programs, so Windows® 3.x, 95,
or NT are not required to run them. If the program
does not run properly in Windows, run it in the DOS
mode.
Before you use the program, the files on the diskette should be copied to your hard disk or a programming disk. Do not use the distribution disk for programming or transceiver tuning because it should be
kept as a backup in case something happens to the program on the working disk.
4.2 STARTING THE PROGRAM
Proceed as follows:
1. Start the computer in the DOS mode. If the pro gram
is not installed on a hard drive, insert th e programming disk in drive A.
•
The Space or backspace key toggle the setting.
•
Use the File menu to save the data and exit the
program.
4.4 MENU FLOW
4.4.1 INTRODUCTION
The menu bar along the top of the screen is used
to select the various menus that are used to program
this transc eiver. Press the ALT or ESC key to enable
this menu bar. Then to move horizontally to select a
menu, use the arrow (←
lighted letter in the title. Then to display the menu and
highlight the desire d item, use the arrow (↓ ↑) keys
and then press ENTER to select it. The following
describes each of the menus that can be selected.
4.4.2 FILE MENU
→
) keys or type the high-
2. Make the directory of the program the cur rent dir ectory. Then start the program by typing RP7600
(Enter).
3. The Memory Channel screen described in Section
4.4.3 is then displayed. Set or modify the data as
desired. Make sur e to scroll r ight using the → key so
the right-most screen parameters can be
programmed.
4.3 SPECIAL KEYS AND FUNCTIONS
•
Information on the various parameters is available
in the form of help screen s. To display information
on the currently highlighted function or setting,
press F1.
•
Pressing ALT or ESC selects the menu on top or
returns to the previous screen.
•
↑ ↓ keys or highlighted character keys move the
cursor.
Load - Loads data from a previously saved data file.
To display the directory, press (Enter) again.
Save - Saves the current data to the specified file. The
extension “. ICF” is automatically added to the file
name.
Delete - Dele tes the current file.
Dos - Allows you to go to the DOS mode to perform a
function in DOS such as copying a file. To return to
the previous screen, type EXIT.
Exit - Quits the program and exits to DOS.
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PROGRAMMING
4.4.3 SCREEN MENU
LMR (U.S.) Format
NOTE: The Screen menu for PMR (European) models
is slightly different than the LMR version shown
above. Refer to Section 4.5 for more information on
PMR models.
Memory Channel - Displays the screen shown in
Table 4-1 which is used to program channel parameters such as frequency, Call Guard (CT CSS/DCTS)
coding, and power output. The screen in Table 4-1 is
for LMR models; refer to Section 4.5 for information
on the PMR version.
Key and Display Assign - Displays the screen shown
in Table 4-2 which assigns functions to the
programmable keys.
Common - Displays the screen shown in Table 4-7
which programs miscellaneous information such as
various timer settings.
Expert - Displays the screen shown in Table 4-8
which programs various timers and other information.
Normally, the default value in this screen should not
be changed.
4.4.4 PROGRAM MENU
Read ← TR - Reads the data programmed in the connected transceiver.
Write → TR - Programs the connected transceiver
with the current data.
Information - Displays information on the connected
transceiver such as the model, revision, and the “Program Comment” programmed in the Common screen
(see Table 4-7).
DTMF Autodial - Displays the scr een shown in Table
4-3 which programs five DTMF code channels (prestored telephone or other numbers). Up to 24 characters can be programmed in each location.
Continuous Tone - Displays the screen shown in
Table 4-4 which programs nine user selectable Call
Guard (CTCSS) tones.
Scan List - Displays the screen shown in Table 4-5
which programs various parameters for each scan list.
2-Tone Code Channel - Displays the screen s hown in
T able 4-6 which programs transcei ver oper ation wi th a
2-tone option. The optional 2/5-Tone Decoder Kit,
Part No. 585-7500-026, is required to use the 2-tone
function. This screen is displayed with LMR models
only (see Section 4.4.6).
4.4.5 PRINT MENU
Current - Prints the currently displayed data.
All - Prints all data for the selected file.
4.4.6 MODEL MENU
LMR - Selects LM R (U.S.A.) models. Selecting this
model displays unique parameters in various screens
for programming a 2-tone option. The differences are
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November 1998
Part No. 001-7600-001
PROGRAMMING
in the Screen menu (see Section 4.4.3), Memory
Channel screen (see Table 4-1), and DTMF Autodial
screen (see Table 4-3).
Refer to Section 4.5 for mo re information on PMR
models.
4.4.7 SETUP MENU
PMR - Selects PMR (European) models. Selecting
this model displays unique parameters for program-
Display Type - Select the color or monochrome 1 or 2
display modes.
ming a 5-tone option. As with the LMR selection,
unique parameters are displayed in the Screen menu
and Memory Channel an d DTMF Autodial screens.
RS-232C - Selects the computer seri al p ort b ein g used
NOTE: To display th is part of the screen, scroll over using the → arrow key
.
Bank Select
Up to 32 channels or two banks of 16 channels can be programmed. To program the channels as two banks, first
program the “MR-CH Bank/Free” parameter in the Key and Display Assign screen for “Bank” as described in Table 4-2. In
addition, a “Bank” option switch must be programmed in this screen to select banks. To switch between banks when
programming channels, press the PgUp/PgDn keys.
Press (Enter) to display the menu which selects one of the following choices:
A: Prio rit y A - The chan nel is selected when the Prio A key is pressed, and it is monitored during priority scan.
In addition, the microphone hanger can be programmed so that this channel is automatically selected whenever an off-hook condition occurs (see Table 4-2).
B: Priority B - The channel is quick selected when the Prio B key is p ressed. It is not monitored during priority
scan.
E: Emergency Channel - Transmission occurs on the channel when the Emergency s witch is pressed.
Emergency Off - Deletes the emergen cy designation o n curren t channel if applicable. If n o emerg ency chan nel
is designated, transmission occurs on the currently selected channel.
SmarTrunk II™ On/Off - Toggles the SmarTrunk function on and off on the bank. This function is not
available with this transceiver.
Channel Insert - Inserts a blank channel by pushing the other channel information down one line.
Channel Delete - Deletes the programming information on the current line and moves the channel information
below it up one line.
Return - Exits the menu and returns to the main screen.
Enter the desired frequency for the channel. Enter a frequency within the frequency range of the transceiver:
VHF = 136-155 or 146-174 MHz, UHF = 400-430, 450-470, 470-490, or 488-512 MHz. Channel steps in multiples of 5.0, 6.25, or 7.5 kHz only. If no receive frequency is entered, no other data can be programmed on the
line. Other special functions associated with frequency are as follows:
Rx Fre q - Press the backspace key to toggle between wide and narrowband. Nar rowban d is in dicated b y “n” to
the right of the frequency. Press the spacebar to toggle receive inhibit on and off indicated by “i” to the left
of the frequency. This limits the channel to priority or emergency use only (it is not available as a regular
channel).
Tx Freq - To enter the same frequency as the receive frequency, enter nothing or “=”. The “←” symbol means
same as receive frequency. Enter a space to disable transmitting on the channel (“Inhibit” is then displayed).
F8 and F9 can be used to cut and paste frequencies. Press (Enter) when the desired frequency has been
entered.
Enters the receive and transmit tone (CTCSS) Call Guard® frequency or digital (DTCS) Call Guar d code. Press
(Enter) to display the tone selection table. Select a tone by scrolling to it and pressing (Enter). Press the spacebar or backspace key to increase or decrease the entered frequency. The “←” symbol means same as receive
code.
PROGRAMMING
The length of the CTCSS reverse burst can be set by the “CTCSS Reverse Burst” parameter on the Common
Screen (see Table 4-7). A non-standard CTCSS tone from 60.1 to 300.1 Hz can be specified on the Expert
screen and then selected by “USER”. If a CTCSS tone is selected by the TONE option switch, it overrides the
channel programming until “TON--M” is reselected.
Digital codes must
sure to enter the tone decimal point or the number is interpreted as a digital code. To toggle the polarity of digital codes, press the spacebar or backspace key. The N or I indicates Normal or Inverted polarity. In
addition, the polarity of digital Call Guard signaling for all channels is set on the Expert screen.
TextP rograms the 7-character alpha tag that is displayed when a channel is selected. If no text is programmed, the
channel number is displayed as CH-xx. Allowable characters are A-Z (upper or lower case), 0-9, ’ * , + $ ’ ( ) –
/ < = > ? @ [ \ ] _ { | } ~. However, some characters, especially lower case letters, may be difficu lt to see. The tx
up arrow is displayed by “:” , and the rx down arrow by “;”. Special characters may be programmed in the
Expert screen (see Table 4-8) and used for the positions 3-7 only (positions 1 and 2 can display only regular
characters). To enter a special character, press PgUp/PgDn to scroll through and select characters A-P.
TOT
(Time-Out
Timer)
Smartrunk II™ is a trademark of Smartrunk Systems Inc.
Disables the transmitter on that channel if it is keyed continuously for longer than the programmed ti me. The
times for this timer and other related functions are programmed in the Common Screen (see Table 4-7).
always be entered directly (there is no table) and tone frequencies can be entered dir ectly. Be
RF PWRPrograms the RF power output for the channel (High, Low1, Low2). This setting can be temporarily or perma-
nently overridden by the HIGH, LOW1, or LOW2 power option switch if it is programmed (see Table 4-2).
LockoutTransmit Disable On Busy. The following conditions can be programmed:
Off - No restrictions; the transmitter can be keyed even while receiving a signal.
Busy - Transmitting is inhibited if the channel is busy (carrier present).
Repeater 1 - Transmission is permitted only when (1) receiving a signal on the programmed Call Guard tone or
code (CTCSS/ DCTS) or (2) when no carrier is being detected.
Repeater 2 - T rans mission is permitted when (1) receiving any Ca ll Guard ton e o r co de ( CTCSS/DCTS) or (2)
when no carrier is being detected.
NOTE: If an attempt is made to transmit in a lockout condition, tra nsm itting is inhibited for the “Lockout
Penalty Time” programmed on Common screen (see Table 4-7).
ScanAssigns the channel to up to five scan lists and also programs if the scan list status can be changed by the scan
list programming key (TAG). Press the spacebar to enter or delete all lists or press 1-5 to toggle the status of a
list. Press the backspace key to toggle the inhibit status. Scan list programming is inhib ited when parentheses
are displayed around the numbers (or underline characters).
Auto Reset If PWR ON Scan is enabled in the Scan screen (see Table 4-5), this selects the time delay before scanning
resumes after a call is complete (the signal disappears) or a key is pressed. Either Timer A or Timer B can be
selected. These timers are programmed in the Common Screen (see Table 4-7). Auto reset can be turn ed off by
setting the timer to “Off” (0).
2-ToneEnables 2-tone operation on the channel and specifies the 2-tone code used. The 2-tone codes are programmed
in the 2-Tone Code Ch screen (see Table 4-6). This requires the optional 2/5-tone module.
Log On/Off Specifies if the DTMF ID code is transmitted when the PTT switch is pressed and releas ed. Th e DTMF code is
specified on the Log/ID line of the DTMF Autodial screen (Table 4-3). In the Common screen, if “TOT Timer
ID Out” is “Yes”, this ID is also transmitted just before the transmitter is disabled by the time-out timer. The
following conditions can be programmed:
OFF (blank) - No ID code is transmitted.
Log In - The ID code is transmitted when the PTT switch is pressed.
Log Off - The ID code is transmitted when the PTT switch is r eleased.
Both - The ID code is transmitted when the PTT switch is pressed and again when it is released.
November 1998
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4-6
PROGRAMMING
Table 4-2 Key and Display Assign Screen Description
KEY ASSIGN PARAMETERS
The and F1-F4 option keys can be programmed for the following functions. Press the (Enter) key and then
PgUp/PgDn to display and then select the desired function.
Parameter
Null---No function (key disabled).
CH Up
CH Down
MR-CH 1
MR-CH 2
MR-CH 3
MR-CH 4
BankBANKToggles the current bank between Bank 1 and Bank 2. This key can be programmed only if the “MR-
Scan A
Scan B
Start/Stop
Scan Add/
Delete
Prio A
Prio A (Re)
Prio B
Moni
(Audi)
Key
Label
CH UP
CH DN
CH 1
CH 2
CH 3
CH 4
SCAN Pressing this key toggles scanning on and off. In addition, pressing and holding the key enables the
TAGScan list programming key. Pressing this key changes the scan list status of the current channel in the
PRI A
PRI A
PRI B
MONIToggles the monitor mode on and off. This mode deactivates the Call Guard (CTCSS/DTCSS) or
Scroll up or down through the programmed channels. Holding the key down causes the function to
repeat.
Directly selects Channels 1, 2, 3, or 4, respectively.
CH Bank/Free” parameter in this screen is programmed “Bank”.
scan list select mode. The current scan list is indicated, and it is changed by pressing the up/down
keys. Either the Scan A or Scan B mode or both can be programmed. Operation is as follows:
Power-On Scan “Off” (see Table 4-5) - It starts and stops scanning with no auto restart. If the transmitter is keyed during scanning, the scan mode is exited.
Power-On Scan “On” - It stops scanning only until the Auto Reset Timer expires (see Table 4-7). If
the transmitter is keyed during scanning, scan automatically resume s when the Auto Reset Timer
expires.
Power-On Scan “Off” or “On” - It starts and stops scanning with auto restart. If the transmitter is
keyed during scanning, scan automatically resumes when the Auto Reset Timer expires.
current scan list (see Section 3.6.2).
Pressing a Prio A key selects the Priority A channel, and pressing a Prio B key selects the Priority B
channel. Pressing a Prio A (Rewrite) key also selects the Priority A channel. In addition, if it is held, the
current channel is made the Priority A channel. Priority channel sampling is programmed in the Scan
List screen (see T able 4-5).
2-tone mute functions (see Section 3.4.4). Pressing and hold ing this key uns quelches the receiver for as
long as it is held.
Description
Scan A
Scan B
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PROGRAMMING
Table 4-2 Key and Display Assign Screen Description (Cont inued)
Parameter
RF ATTATT
Lock LOCK
BeepBEEP
LightLITE
Bank Up
High
Low 1
Low 2
C. Tone
CH Ent
Talk
Around
Wide/
Narrow
DTMF
Autodial
Emergency
Single
Repeat
OPTx Out
OPTx
Mom Out
CallCALL
Call A/BCALL
Tx Code/
CH Up/Dn
ID MR
Select
Trunking
Group
Switch
Hanger
Action
Beep On/
Off
Key
Label
HIGH
LOW1
LOW2
TONE
TA
W/N
DTMF
EMER
OPT1
OPT2
OPT3
TX CH
ID MR
GRP
Any or none of the following hanger functions can be programmed:
Monitor Scan Prio A -
Enables or disables the ke y p ress bee p. Th is programming can be overridden by the power-on menu (see S ectio n
3.3.4) or B EEP key (see S ection 3.3.10).
Description
Toggles the receive attenuate function on and off (see Section 3.5.13).
Locks/unlocks all programmable keys except CALL, MONI, and EMER to prevent them from being
accidentally pressed (see Section 3.5.9).
Toggles the key beep function on and off (see Section 3.3.10).
Turns the LCD backlight on and off (see Section 3.3.9).
Selects the other bank of sixteen channels if applicable.
Changes the power output for the current channel to the level programmed of the key. Pressing the key
again reselects the preprogrammed power level for the channel. The change may be temporary or permanent for that channel depending on the programming of the “RF PWR Selection” parameter later in
this screen (see description which follows).
(Continuous Tone Memory Channel) This key selects the continuous tone mode which allows the Call
Guard (CTCSS) tone to be selected from the front panel (see Section 3.5.5). These tones are programmed by the Continuous Tone screen described in Table 4-4.
Toggles the talk-around mode on and off (see Section 3.5.16).
Tem porarily toggles between the wide and narrow band modes (see Section 3.5.19). When th e channe l
is changed or power is cycled, the wide/narrow mode programmed for the chann el frequ ency s pecified
in the memory Channel screen is again selected.
Pressing this key enables the DTMF autodial mode. After pressing this key, the number to be dialed is
selected by the up/down keys. Then press and hold this key to transmit the number (see Section 3.5.7). The available DTMF numbers are programmed by the DTMF Autodial screen described in
Table 4-3.
Pressing this key transmits an emergency call. If “Single” is programmed, it is transmitted only once; if
“Repeat” is programmed, it is transmitted repeatedly with LMR mod els, or until the pr oper 5-to ne code
is received with PMR models. The emergency channel is specified by the CH Atr parameter on the
Memory Channel screen described in Table 4-1. A DTMF code is transmitted if it is entered on the
“Emergency” line of the DTMF Autodial screen (see Table 4-3). Additional emergency parameters are
programmed in the Expert screen described in Table 4-8.
A “OPT1-OPT3 Out” key switch es the respec tive pin of the 30-pin option connector high or low (this
connector is located inside the transceiver, and is used, for example, by the optional 2/5-tone module).
A “OPT1-OPT3 Momentary Out” key produces a high or low pulse on the res pective pin of this 3 0-pin
connector.
When equipped with the optional 2/5-tone module, transmits the 2-tone or 5-tone code.
PMR mode w/5-tone option only. Transmits code using channel 30 (A) or 29 (B).
PMR mode w/5-tone option only. Selects transmit 5-tone code.
PMR mode w/5-tone option only. Recalls and erases stored codes that have been received
This switch is for a SmarTrunk function, so it is not available with this transceiver.
OTHER MENU PARAMETERS
Disables CTCSS/DCTS Call Guard signaling on off-hook and re-enables it when back on-hook.
Automatically enables scanning when placed on-hook.
Automatically selects the priority A channel when taken off-hook.
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4-8
Table 4-2 Key and Display Assign Screen Description (Cont inued)
ParameterDescription
Light
RF Power
Selection
MR-CH
Bank/Free
Opening
Text
Enables or disables the display and key backlight. This programming can be overridden by the power-on menu
(see Section 3.3.4) or LITE key (see Section 3.3.9). The “Auto” configuration allows it to be controlled by pin 1
of the DB9 connector on the optional accessory cable. The on condition is selected by 0 volts (low) and off by 12
volts (high).
This can be programmed for one of the following configurations:
MR CH Individual -
is only temporary. Power returns to the level programmed for the channel when the channel is changed or
transceiver power is cycled.
Override -
level is permanent on the channel (chang ing the chan nel or cycling power does not change the selected po wer
level). Pressing the key again on the channel reselects the preprogrammed level.
Free Bank -
switch must be programmed to select the banks (see Section 3.3.7).
If text is entered, it is displayed and a tone so unds for 2 seconds when power is turned on. If no text is programmed, no tone sounds and no message is displayed. The characters and ot her information described for
“TEXT” in Table 4-1 also applies to this text.
The power output selected by above power keys overrides the channel programming. The selected
Select if banks are not used. One block of up to 32 channels is programmed.
Select if channels are to be programmed as two banks with up to 16 channels each. The BANK option
The power output selected by the HIGH, LOW1, LOW2 keys (see preceding description)
PROGRAMMING
Table 4-3 DTMF Autodial Screen Description
This screen is used to program the DTMF autodial codes that can be transmitted by pressing the DTMF key (see Table
4-2). Each location can contain up to 16 characters. Allowable characters are 0-9, A-D, *, and #. Press the INS key to toggle
between the insert and overwrite modes. To clear a location, press the spacebar and then (Enter). Press ALT or ESC to cancel
the entered codes before input. The code on the “Emergency” line is transmitted when the Emergency key is pressed (see
Table 4-2). Likewise, the code on the “Log/ID” line is transmitted when the Log/ID channel parameter is enabled (see Table
4-1) and when the time-out timer expires (see Table 4-7). With PMR models, “4” and “5” are displayed in place of “Emergency” and “Log/ID”.
ParameterDescription
DTMF
Timer
1st Timer
[*] [#] Timer
Sets the time interval in seconds for each code emission and interval.
Sets the tone period in seconds for the first DTMF code. This period is affected by the scanning period and
power saver function delays of receiving transceivers.
Sets the tone period in seconds for the * character (same as “E”) and # (same as “F”). These codes can be used
for control codes on some systems. NOTE: When these special codes are used for the first code, the “1st
Timer” has priority over this setting.
4-9
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PROGRAMMING
Table 4-4 Continuous Tone Screen Description
Description
The continuous tones programmed in this screen are selected by pressing the C.Tone CH Ent function key (see
Table 4-2) and then pressing the up/down keys. This allows the user to select the continuous tone being transmitted
and received on the current channel. To transmit or receive using the codes programmed for the channel in the chann el scr een
(see Table 4-1), select “TON--M” using the keys.
Table 4-5 Scan Function Screen Description
ParameterDescription
This screen is used to configure each of the up to five scan lists that can be selected. Channels are assigned to a scan list
in the Memory Channel screen described in Table 4-1 and by the TAG key described in Table 4-2. Scanning is turned on and
off and a specific scan mode is selected by the SCAN key also described in Table 4-2. Scanning may be enabled at power on
(see following) and by placing the microphone on-hook (see “Hanger Action” in Table 4-2).
Scan Mode
Text
The following conditions are programmable:
Scan Off M1 (Normal) M2 (Prio A) -
scanning is turned off while receiving a message in the scan mode, the transceiver switches to that channel.
M 3 (Prio A) -
channel is selected.
Programs the text that is displayed while scanning with that scan list selected. If “OFF” is programmed, the text
is not displayed. Instead, the alpha tag (or channel number) programmed for each channel is displayed as the
channel is scanned. The characters and other information described for “TEXT” in Table 4-1 also applies to this
text.
Deactivates that scan list so that it cannot be selected.
Selects normal (non-priority) scanning from the lowest to highest channel.
Selects scanning from the lowest to highest channel while checking the Priority A channel. If
Same as Mode 2 except that if scanning is turned off while receiving a message, the Priority A
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Table 4-5 Scan Function Screen Description (Continued)
ParameterDescription
Stop Timer
Resume
Timer
PWR ON
Scan
Auto CH
Call
When Mode 2 or 3 above is programmed (priority scanning), this sets how often in seconds the priority channel
is checked while receiving a message on some other channel.
This sets the scan resume delay in seconds. This is the time that elapses before scanning resumes after a
message is received.
If this function is programmed “On”, scanning starts automatically when transceiver power is turned on. The
“Hanger Action” parameter in Table 4-2 should also be programmed for “Scan” if power-on scan is used. If
scanning halts to transmit a message, the timer selected for Auto Reset parameter in the channel screen (see
Table 4-1) determines the delay before scanning resumes. See also Scan A/B function in Key Assign screen
(Table 4-2), “Scan” column in 2-Tone Code CH screen (Table 4-6), “Timer A/B” in Common screen
(Table 4-7), and “Fast/Slow Scan Timer” in Expert screen (Table 4-8).
The parameter is displayed only in the PMR (European) mode, and is used with the 5-tone option. If “On” is
programmed, pressing the CALL key (1) starts scanning, (2) detects a non-busy channel, and (3) transmits the
5-tone co des.
PROGRAMMING
Table 4-6 2-Tone Code Channel Screen Description
ParameterDescription
Rx Freq
1st/2nd
Group Call
Text
Bell
ANS
EXO
Sets the frequencies for the first and second tones from 250-3300 Hz. The closest tone is selected.
Programs if the 1st or 2nd tone is used for the group code.
Programs the text that is displayed when a matched 2-tone is received. The characters and other information
described for “TEXT” in Table 4-1 also applies to this text.
Selects the bell indicator condition when receiving a matched 2-tone. The following conditions can be
programmed:
The bell indicator condition is not changed, even when a matched code is received.
Null -
The bell indicator goes off.
Off -
The bell indicator appears until a key is pressed.
On Blink -
Turns the Answer Back function on and off. This function transmits a 1 kHz single tone for 2 seconds when
receiving a matched 2-tone code.
“On” activates an external alert such as a horn or buzzer when a matching 2-tone code is received. The activation time is set by “EXO Timer” in the Rx Code Common screen (see below). The optional accessory cable is
required to utilize this feature.
The bell indicator blinks un til a key is pressed.
NOTE: Optional
2/5-Tone Module,
P.N. 585-7500026, is required to
utilize the twotone feature.
Sets the transceiver to the transmit condition (by activating the microphone PTT) when receiving a matched
2-tone code. This transmit time can be set in the Auto Tx Timer parameter in the Rx Code Common screen (see
below).
When a matched 2-tone is received, the transceiver is set to the following condition that is programmed:
Off Kill Stun -
entered. See also “User Password” and “Pwr On Password” in Common screen (Table 4-7). Password entry is
required regardless of the Pwr On Password setting.
When a matched 2-tone is received, scan is set to the following condition that is programmed:
Null Cancel Start -
See also “Scan” key in Table 4-2 and “Power On Scan” in Table 4-5.
One high beep once.
T w o high beeps once.
One high and one low beep three times.
One high beep repeated at selected intervals.
Two high beeps repeated at selected intervals.
The transceiver can be used continuously.
The transceiver cannot be used. Reprogramming is required to re-activate the transceiver.
The power-on password prompt is displayed. To use the transceiver, the correct password must be
Scan condition is not affected.
Scan is cancelled.
Scan is started.
ParameterDescription
Rx Code Common Screen
Notone
Timer
Group
Timer
EXO Timer
Beep Repeat
Timer
Auto Tx
Timer
Code Type
1st/2nd Tone
Frequency
1st/2nd Tone
Period
This item sets the acceptable period between 2 tones. When received tones are interrupted for longer than this
setting, the transceiver does not detect the code.
Programs the 2-tone decoding period in seconds. When the received tone is longer than this setting, the transceiver detects the tone as a group code.
When the EXO function is programmed “On” (see EXO abo ve), the horn drive out pin of the o ptional accessory
cable is grounded for this period when receiving a matched 2-tone code.
When “Repeat” is selected for the above “Beep” parameter, beeps are repeated at this period in seconds.
When the Auto TX function above is programmed “On”, the transceiver transmits for this set period when
receiving a matched 2-tone code.
Tx Code Screen
Selects the “Individual” or “Group” code type.
Sets the frequencies for the first and second tones from 250-3300 Hz. The closest tone is selected.
Sets the period of the first and second tones.
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Table 4-7 Common Screen Description
ParameterDescription
User
Password
Program
Comment
AF Min
Level
SQL Level
Rx AF
Switch
Auto Reset
Timer A/B
Inactive
Timer
TOT
Timer
TOT Penalty
Timer
TOT ID Out
TOT Beep
Lockout
Penalty
Timer
CTCSS
Reverse
Burst
Programs the password that must be entered at power on if the following “PWR ON Password” parameter is
“On” or to cancel the “STUN” cond itio n describ ed in Table 4-6. Any four-di git number f rom 0000-9 999 can be
programmed. The password is entered as described in Section 3.3.2.
Allows a comment to be programmed in the file for use in quickly identifying the contents of a transceiver.
When a transceiver is connected to the computer , the comment can be check ed without reading all p rogrammed
data by selecting “Information” in the Program menu (see Section 4.4.4).
Sets the minimum audio level that can be selected by the user. The level can be set in 32 steps with 0 the lowest
level. This setting can be overridden by pressing the F1 in the power-on menu (see Section 3.3.4).
Sets the squelch level in up t o 25 5 st ep s (0 set s th e maxi mu m uns qu elched l evel). This adjustment can be more
accurately made by pressing F4 in the power-on menu (see Section 3.3.4).
This parameter can be used to disable the high-pass filter that removes the Call Guard (CTCSS/DTCS) signal
from the audio. It should be programmed “On” if Call Guard squelch is used.
These timer settings are used by the “Auto Reset” parameter in the channel screen (see Table 4-1). These times
set the delay in returning to the mute mode or “Po wer On Scan” after receiving a message or press ing a key. To
disable the Auto Reset function, set one of these timers to “Off ” (0) and select it in the channel screen.
This feature is available with the PMR (European) mode only. It sets the time in seconds to return to the
“Inaudible” mode after the “Audible” mode is selected. To turn off the inactive timer function, do not assign
“Inactive” in the channel screen.
Programs the time-out timer time in seconds. If the transmitter is keyed continuously for longer than this time,
the transmitter is disabled. The time-out timer is enabled or disabled for each channel by the TOT parameter in
the channel screen (see Table 4-1).
This programs the time in seconds that the transmitter is disabled by the time-out timer. The transmitter cannot
be keyed again until this time expires.
If this parameter is enabled, an DTMF ID code is automatically transmitted just before the time-out timer
disables the transmitter. This ID code is set on the Log/ID line of the DTMF Autodial screen (see Table 4-3).
If this parameter is enabled, warning beeps are transmitted 10 seconds before time out occurs.
This is the time that the transmitter is disabled if the user attempts to transmit while in the lockout (Transmit
Disable On Busy) condition. Transmitting is disabled for the Lockout Penalty Time even if the lockout condition is cleared. The lockout feature is programmed on the channel screen (see Table 4-1).
If CTCSS (tone Call Guard) signaling is programmed on the channel, this sets the length of the reverse burst
that is transmitted when the P TT switch is released . The reverse burst prevents the “squelch tail” (n oise burst) in
the transceiver receiving the signal.
PROGRAMMING
4-13
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PROGRAMMING
Table 4-7 Common Screen Description (Continued)
ParameterDescription
Power On
Password
Dealer
Passcode
Set Mode
Access
Transceiver
Data Out
This turns the password function on and o ff. When it is turned on, “PWoRd” is displayed when power is turned
on and a four-digit password must b e entered to en able the trans ceiver ( see Section 3.3 .2) . The password is programmed in “User Password” above. If the STUN function disables the transceiver (see Table 4-6), password
input is required even if this parameter is programmed “Off”.
Specifies the six-digit code that must be entered to access the following dealer set mode.
This enables/disables the Dealer Set Mode which allows one transceiver to clone another with identical information. If the transceiver will not be used for cloning, the dealer set mode is not used and this parameter should
be programmed “Inhibit”.
Enables or inhibits the do wnloadin g of transcei ver prog ramming dat a using the pr ogrammi ng sof tware or w hen
programming one transceiver with another (cloning). This prevents the unauthorized duplication of programming data. This does not inhibit overwriting of programming data, so reprogramming is still possible with this
enabled.
Table 4-8 Expert Screen Description
ParameterDescription
Fast Scan
Timer
Slow Scan
Timer
Tx DTCS
Inverse
Rx DTCS
Inverse
User CTCSS
Freq.
November 1998
Part No. 001-7600-001
Sets the period in seconds that each channel not programmed for CTCSS/DTCS (Call Guard) squelch is
scanned. NOTE: An appropriate time is set by default and if a time less than the default is programmed, busy
channels may not be detected.
Sets the period in seconds that each channel programmed for CTCSS/DTCS (Call Guard) squelch is scanned.
NOTE: An appropriate time is set by default and if a time less than the default is programmed, busy channels
may not be detected.
Selecting “Inverse” selects the opposite transmit digital DTCS (Call Guard) code polarity specified for the
channel (see Table 4-1) and selecting “Normal” does not change that setting. For example, if the channel is pro grammed “I” (inverse), selecting “Inverse” here results in “Normal” DTCS. For DTCS signaling to work properly, the polarity of the code in the transmitting and receiving transceivers must be the same.
Functions the same as the preceding “Tx DTCS Inverse” parameter to change the receive DTCS polarity.
A non-standard CTCSS (Call Guard) tone from 60 .1-300.1 Hz can be programmed. It is then selected by programming “USER” for the CTCSS code in the channel screen (see Table 4-1).
4-14
Table 4-8 Expert Screen Description (Continued)
ParameterDescription
Emer Sw
On Timer
Emer Sw
Off Timer
Emer
Start/Repeat
Rx EXO
Rx EXO
PTT
EXPTT
Delay Timer
Tone Mute
EXPTT
Low Beep
Frequency
High Beep
Frequency
Character
Editor
Sets the period in seconds that the Emergency function key must be p ressed to activate the emer gency f unction.
An emergency call is initiated by pressing the Emergency key for longer than this time.
Sets the period in seconds that the Emergency function switch must be pressed to cancel an emergency call.
This must be done before the call is transmitted because once it is transmitted, it cannot be canceled.
Programs the delay and interval period in seconds for emergency calls. When the emergency switch is pressed
and held, the emergency call is transmitted after this delay period. If the Emergency Repeat function key is programmed (see Table 4-2), the transceiver then transmits repeatedly at this interval until an “Emergency Cancel”
code is received.
Sets the condition of the horn output (pin 6) of the optional accessory cable in the receive mode. OFF = Horn
drive control out, ON = Send (to ground when signal is received). One use of the “ON” condition may be for
some type of simplified repeater system.
When Rx EXO is programmed “On”, pin 6 of the optional accessory cable is grounded for this period when
receiving a signal. Normally this parameter is set to “0”.
Sets the period that the transmitter stays on after the receive signal disappears.
Enables or disables the CTCSS/DTCS (Call Guard) function with an external PTT signal. “On” disables and
“Off” enables CTCSS/DTCS.
Sets the low beep tone frequency for 400 - 2998 Hz. The nearest available frequency is automatically selected.
Sets the high beep tone frequency for 400 - 2998 Hz. The nearest available frequency is automatically selected.
Special characters can be designed using this function by enabling the available 14 segments in any combination desired. The special characters created then can b e entered when programming the “Text” parameters in the
various screens. Up to 16 characters can be programmed and stored in locations A-P. To enter a special character when programming text, press the PgUp or PgDn keys to scroll through and select the desired character.
Special characters can be displayed in positions 3-7 (1 and 2 must be standard characters).
PROGRAMMING
4.5 UNIQUE PMR (EUROPEAN) SCREENS
4.5.1 GENERAL
Selecting LMR or PMR in the Model menu (see
Section 4.4.6) affects what parameters are displayed in
some scree ns and also w hat additional screens a re displayed. Basically, selecting the LMR (U.S.A.) model
displays parameters for the 2-tone option, and selecting PMR (European) displays parameters for the
5-tone option.
NOTE: Optional 2/5-Tone Kit, Part No. 585-7500026, is required to have the 5-tone function.
4.5.2 UNIQUE PMR SCREENS
The following menus and screens are different
for LMR and PMR models:
Screen Menu -
The LMR menu is described in Sec-
tion 4.4.3, and the PMR version is shown below.
.
Memory Channel Screen -
The LMR version of this
screen is shown in Table 4-1, and the PMR version is
shown in Figure 4-2. Refer to on-line help for information on unique PMR parameters (press F1 with the
parameter highlighted).
November 1998
4-15
Part No. 001-7600-001
PROGRAMMING
F
1
The following screens selected in the preceding
Screen menu are unique to PMR models. Refer to online help for information on parameters in these
screens.
Rx Code Channel - This screen is shown below and it
programs the receive 5-tone code information.
Tx Code Channel - This screen i s shown below an d it
programs the transmit 5-tone code information.
4.6 CLONING (PROGRAMMING ONE
TRANSCEIVER WITH ANOTHER)
One transceiver can be used to program another
with identical data. Replication Cable, Part No. 5972002-200 is required to connect the transceivers
together (see Table 1-1). The master (source) transceiver must have the following Common screen (see
Table 4-7) parameters programmed to perform
cloning:
•
T ransmit Data Out = Enabled. If this parameter is
not enabled, the transceiver does not go into the
clone mode. The programming of this parameter
does not af fect the abi lity to receiv e data. Therefo re,
it can be in e ither mode in the slave (target)
transceiver.
•
Set Mode Access = Enabled. This must be programmed to allow the Dealer Set mode to be
accessed so that cloning can be enabled.
•
Dealer Pa sscode. This six-digit code must be
known to enable the Dealer Set mode.
User Tone Format - This screen is shown below and
it programs special tone frequencies and the 5-tone
format information.
Proceed as follows to program one transceiver
with another:
1. Select the Dealer Set mode in the Master (source)
transceiver by tur ni ng p ower on with the F1 and up
key pressed.
2. The display then indicate s “DEALR” which is the
prompt to enter the six-d igit Dealer Pa sscode. Enter
this code using the F1-F4 and down key. The
numbers represented by each key are as follows.
When the correct number is ente red, “SETMODE is
displayed. If six digi ts have been ent ered and thi s is
not displayed, an incorrect number may have been
entered. Repeat starting with step 1. Refer to Section
3.3.2 for more informatio n.
Key
Number
Entered
0
5
F
1
6
F
2
2
7
F
3
4
3
8
4
9
3. Press the F4 key to select the clone mode. The
display should indi cate “CLONE”.
November 1998
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4-16
PROGRAMMING
4. Connect the master transceiver to the slave (target)
transceiver by plugging the cloning cable into the
microphone jack of each.
5. Turn the slave transceiver on. Then momentarily
press the POWER switch of the master transceiver
to begin the data transfer.
6. When cloning is complete, CLONE is dis playe d by
the master and CLONE OK by the slave.
7. To clone another transceiver, repeat this procedure
starting with step 4.
8. T o r eturn both the t ransce iv ers t o norm al o perat ion,
reconnect the microphone and cycle power.
.
Figure 4-2 Memory Channel Screen (PMR Models)
4-17
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PROGRAMMING
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4-18
VHF (7610) CIRCUIT DESCRIPTION
SECTION 5A VHF (7610) CIRCUIT DESCRIPTION
NOTE: A VHF transceiver block diagram is located
on page 8-1.
5.1 VHF RECEIVER CIRCUIT
5.1.1 ANTENNA SWITCHING CIRCUIT
The antenna switching circuit functions as a lowpass filter whil e receiv ing and a r esonat or circui t while
transmitting. This prevents the transm it signal from
entering the receiver in the transmit mode.
Received signals enter the antenna connector and
pass through a low-pass filter consisting of L1-L3, C1C3, C8-C10, and C11-C13. The filtered signal is then
fed through a quarter-wave type antenna switching circuit formed by D13, D14, and L13 and applied to the
receiver RF circuit.
5.1.2 RF CIRCUIT
The RF circuit amplifies the frequen cies that are
within the receive band range and attenuates out-ofband signals.
The signal from the antenna switching circuit
passes through attenuator D13/D14. The attenuator
circuit functions only when the attenuator function is
assigned to a programmable key. It is enabled to minimize RF amplifier distortion caused by excessively
strong receive signals.
When the attenuator function is turned on, CPU
IC1, pin 32 switches the voltage level of the “RF
ATT” line from high to low and then controls the
attenuator switch Q35. The D13/D14 current then
increases and D13/D14 act as an attenuator.
This signal is then applied to a two-stage tunable
bandpass filter controlled by D16 and D17. The filtered signals are amplified by RF amplifier Q12 and
applied to another two-stage bandpass filter controlled
by D18-D21. These filters at tenuate unwanted signals.
The filtered signal is then applied to the fi rst mixer
Q13.
The tunable bandpass filters controlled by D16D21 employ varactor diodes to tune them to the center
frequency of the RF passband. This gi ves a wide bandwidth receiver good image response rejection. The
diodes are controlled by the CPU IC1 via level
controller IC5.
5.1.3 FIRST MIXER AND FIRST IF CIRCUITS
The first mixer circuit converts the received signal to a fixed frequency fi rst IF signal of 31.050 MHz.
The RF signal from the bandp ass fi lter is applied to th e
first mixer Q13. This sig nal is mixed with the first LO
signal from VCO Q7/Q8 and buffers Q6-Q4 to produce the IF signal.
The 31.050 MHz first IF signal then passes
through a pair of crystal filters (FI1A/B) which suppress out-of-band signals. The filtered signal is then
amplified by first IF amplifier Q14 and applied to second IF circuit IC3.
5.1.4 SECOND IF AND DEMODULATOR
CIRCUITS
The second mixer circuit converts the 31.050
MHz first IF signal to a 450 kHz second IF signal. A
double-conversion superheterodyne receiver like this
improves the image rejection ratio and provides a
stable receiver gain.
FM IF system IC3 contains second mixer, limiter
amplifier, quadra ture detector, active filter and noise
amplifier circuits (see F igure 5-1). The first IF signal
from IF amplifier Q14 is applied to IC3, pin 16 whic h
is the input to the second mixer section. The 31.050
MHz first IF signal is mixed with the 30.600 MHz second LO signal to produce the 450 kHz second IF signal. The PLL reference frequency of 15.300 MHz is
doubled to produce the 30.60 0 MHz second LO signal .
The second IF signal is fed out of IC3 on pin 3
and applied to ceramic filters FI3 and FI4 with nar ro w
band operation or only FI4 with wideband operation
(bypassing FI3). It is then fed back into IC3 on pin 5
and applied to the limiter amplifier and quadrature
detector. The quadrature detector demodulates the
audio signal contained in the second IF signal. Components connected to pins 10 and 11 including X3
5A-1
November 1998
Part No. 001-7600-001
VHF (7610) CIRCUIT DESCRIPTION
Figure 5-1 Second IF System IC3 (VHF)
Figure 5-2 Audio Switch ing and Amplifier Circuit (VHF)
are part of the quadrature detector. The audio signal is
fed out on pin 9 (IC3) and applied to the AF amplifier
circuit.
5.1.5 AUDIO AMPLIFIER CIRCUIT
The AF (audio frequency) amplifier circuit provides drive to the speaker ( a block dia gram is shown i n
Figure 5-2). The audio signal from IC3, pin 9 is
applied to AF amplifier IC7A and then fed to pin 1 of
AF switching circuit IC4. The switched output signal
on IC4, pin 2 is then applied to high-pass filter IC8A/
B. The cut-off f requency of this filter is controlled by
the “AFHPF” line. When “AFHPF” is high , the cut-of f
frequency is shifted higher to attenuate the Call Guard
(CTCSS or DTCS) signals.
The filtered output signal on IC8, pin 7 is applied
to limiter IC7b and buffer IC7c. De-emphasis is pro-
vided by R145 and C182. The audio signal is then
applied to pin 16 of level controller IC5. This device
allows the C PU to control the speaker volume level.
The level controlled signal is fed out of IC5 on pin 15
and applied to low-pass filter IC6b. It is then applied
to AF switching circuit IC4 on pin 8, and the switched
output is on pin 9. This signal is buffered by IC6d and
then amplified by AF amplifier IC10 to provide drive
to the speaker.
5.1.6 RECEIVER MUTE CIRCUIT
Noise Squelch
The noise squelch circuit turns off the audio signal when no RF signal is being received. The squelch
circuit is controlled by the amount of noise present in
the audio signal.
November 1998
Part No. 001-7600-001
5A-2
VHF (7610) CIRCUIT DESCRIPTION
Part of the AF signal from pin 9 of FM IF circuit
IC3 is applied to pin 24 of level controll er IC5. This
device allows the CPU to control t he squelc h thres hold
level. The level-controlled output signal on pin 23 is
applied to IC3, pin 8 which is the input of an internal
filter (see Figure 5-1). Noise frequencies of about 10
kHz are passed and then fed out on pin 7 and also
applied to an internal noise detector.
The detected noise signal is rectified and fed out
on pin 13 witho ut s moo thi ng. The noise signal (NOIS)
is then applied to pin 19 of CPU IC1. The CPU analyzes the noise condition and outputs the RMUT signal via I/O expander IC11. This signal controls AF
mute switches IC4a and c (see Figure 5-2).
Call Guard (CTCSS/DTCS) Operation
The tone Call Guard squelch circuit detects AF
signals and opens the squelch only when receiving a
signal containing a matching subaudible tone or code
(CTCSS or DTCS). When tone squelch is in use and a
signal with a mismatched or no subaudible tone is
received, the tone squ elch ci rcuit mutes the AF signa ls
even when noise squelch is open.
A portion of the audi o s ign al fr om amplifier IC7a
passes through low-pass filter Q5 in the front unit to
remove voice signals . It is then applied to CPU IC1 on
pin 97 via the “CTCIN” line. The CPU detects the
CTCSS or DTCS signaling and controls the AF mute
switch via I/O expander IC11.
5.2 VHF TRANSMITTER CIRCUIT
5.2.1 MICROPHONE AMPLIFIER CIRCUIT
The microphone amplifier circuit amplifies the
microphone audio signal to the level required by the
modulation circuit and also provides pre-emphasis.
The signal is then fed to IC7b and IC7c which
provide buffering and amplification. Deviation limiting is then provided by level controller IC5. The input
to this device is pin 16 and the output is pin 15. The
signal is then fed to splatter filter IC6b and switch IC4.
The input is on pin 11 and the outp ut is on pin 10. The
modulation signal is then applied to the PLL circuit as
“MOD”.
Narrow band/wideband switch Q21 is connected
to the input of the splatter filter IC6b and switched by
the “NWC” signal from the I/O expander IC11. When
“NWC” is high, Q21 shifts the filter cut-off frequency
for narrow band deviation selection.
5.2.2 MODULATION CIRCUIT
The microphone audio signal modulates the frequency of VCO Q7/Q8. The “MOD” signal from
switch IC4, pin 10 changes the reactance of diode D9
which frequency modulates the VCO frequency. The
modulated VCO signal is amplified by buffer amplifiers Q6, Q5, and Q4 and applied to the transmit driver
circuit.
5.2.3 TRANSMIT DRIVER CIRCUIT
The transmit driver circuit amplifies the VCO
oscillating signal to the level required by the power
amplifier module. The RF sig nal fr om buf f er ampl if ier
Q4 passes through the T/R switch D5 and is amplified
by the buffer-a mplifier s Q3 and Q2 and driver Q1. Th e
signal is then applied to the power amplif ie r mod ule
IC1.
5.2.4 POWER AMPLIFIER MODULE
The power amplifier module amplifies the driver
signal to the output power level. The RF signal from
the driver Q1 is applied to the power module which
produces 45 watts of out put power at the antenna jack.
The microphone audio signal is amplified by
IC7d, with R172 and C295 on the output providing
pre-emphasis. The microphon e audio sign al is then fed
to switch IC4 on pin 4 and the switched output signal
is on pin 3. This signal is then applied to high-pass filter IC8a/b which attenuates frequencies in the Call
Guard (CTCSS/DTCS) range. This is the same filter
used for receive audio filtering.
The amplified signal is fed through antenna
switching circuit D3 and D4, a low-pass filter and
APC detector, and is then applied to the antenna jack.
The collector voltage of driver Q1 and the control
voltage on pin 2 of the power module IC1 come from
APC transistors Q17 and Q18. Trans mit swit ch Q23
turns off Q17 and Q18 when the transmitter is
disabled.
November 1998
5A-3
Part No. 001-7600-001
VHF (7610) CIRCUIT DESCRIPTION
Figure 5-3 PLL Circuit (VHF)
5.2.5 APC CIRCUIT
The APC (Automatic Power Control) circuit protects the power amplifier from damage caused by a
mismatched antenna l oad, and provides a stable power
output.
Detector D2 detects forward signals, and D1
detects reverse signals. The combined voltage is at
minimum level when a matched antenna load of 50
ohms is present and then increases as it becomes mismatched. The detected voltage is applied to pin 9 of
inverse amplifier IC6c. Power setting voltage T4 is
applied to the other input (pin 10) as a reference.
When antenna impedance is mismatched, the
detected voltage exceeds the power setti ng voltage.
The output voltage on pin 8 then decreases which
turns Q18 off slightly. Q17 then turns off slightly and
lowers the voltage applied to the collector of Q1 and
the power control i nput of I C1. This re duces the output
power produced by thes e devices.
5.3 VHF PLL CIRCUIT
5.3.1 PLL CIRCUIT
The PLL (Phase-Locked-L oop) ci rc uit pr ovides a
stable (± 5 PPM) receive first injection and transmit
frequency. The PLL circuit consists of PLL circuit
IC2, a loop filter, and reference oscillator. A block diagram of the PLL circuit is shown in Figure 5-3.
The signal from VCO (Voltage-Controlled Oscillator) Q7/Q8 is buffered by Q6 and Q5 and then
applied to pin 2 of IC2. The prescaler in IC2 divides
the VCO signal down so that i t i s wi th in the frequency
range of the programmable counter.
A reference frequency generated by reference
oscillator and cont rolled by cryst al X1 is appl ied to pi n
15 of IC1. This signal is divided down by a programmable divider and provides the reference input to the
phase detector. When the VCO is oscillating at the
correct frequency, the VCO-derived input to the phase
detector is the same frequency as the reference input.
November 1998
Part No. 001-7600-001
5A-4
VHF (7610) CIRCUIT DESCRIPTION
The phase detector determines the phase difference between these signals and then produces output
pulses on pin 8 which are filtered by the loop filter.
This filter consists of R43-R45, C60, and C61. The
output of this fi lter is the DC contr ol voltage applied t o
the VCO. The phase detector increases or decreases
this control voltage to change the VCO frequency.
5.3.2 VCO CIRCUIT
The VCO signal is amplified by buffer amplifiers
Q6 and Q4 and is then applied to T/R switch D5 and
D6. The VCO receive injection signal is applied to
first mixer Q13 via bandpass filter L23, L24, and
C116-C118. Likewise, the VCO transmit signal is
applied to driver Q1 via buffer amplifiers Q2 and Q3.
Part of the Q6 output signal is fed back to PLL IC2 as
described in the preceding section.
5.4 VHF IC PIN DESCRIPTIONS
5.4.1 VHF POWER SUPPLY
Line Description
VCC Unswitched input voltage to the transceiver.
HVVCC supply voltage switched by Q25 and Q26.
When the [POWER] switch is pressed, the CPU
outputs the “PWON” control signal to this circuit
to turn the HV supply on.
CPU5V Common 5V supply for the CPU produced from
the VCC supply by CPU5V regulator IC9. The
circuit outputs this voltage regardless of the
transceiver on-off condition.
8VCommon 8V supply produced from the HV
supply by 8V regulator Q36.
5VCommon 5V supply produced from the VCC
supply by 5V regulator Q29/Q30.
R5Receive 5V supply produced by R5 regulator
Q27 using the “T5C” signal from I/O expander
IC IC11.
T5Transmit 5V supply controlled by T5 regulator
Q28 using the “T5C” signal from I/O expander
IC11.
5.4.2 VHF CPU IC1 PORT ALLOCATION
Pin
No.
1VINInput port for overvoltage detection from
12SCKOutputs clock signal to EEPROM IC3,
13SIInput port for the data signal from
14SOOutputs data signal to E EPROM IC3 , PLL
16CLINInput port for cloning signal.
17CLOUT Output port for cloning signal.
18POSWInput for the POWER switch. Low =
19NOISNOIS signal input port from the FM IF
26PTTInput port for the PTT switch. Low = PTT
32RF ATTOutputs RF attenuator control sign al to the
36UNLKInput port for PLL unlock signal from the
37PWONOutputs control signal for the power
38DIMOutputs control signal for LCD backlight.
39EXTPTT Input port for the PTT switch from exter-
40DIMInput port for the LCD backlight control
41PLSTOutputs strobe signals for PLL IC2 (main
42DASTOutputs strobe signals for level controller
43EXSTOutputs strobe signals for the I/O
45, 46KS1,
47-50KR3-
Port
Name
KS2
KR10
Description
the vehicle power source.
PLL IC2 (main unit) and expanders IC5,
IC11 (main unit), etc.
EEPROM IC3, etc.
IC2 (main unit) and expanders IC5, IC11
(main unit).
POWER switch pushed.
IC3 (main unit) for noise squelch
operation.
switch pushed.
attenuator switch (Q35 on main unit).
Low = Attenuator function on.
PLL IC2 (main unit). High = unlock.
switching circuit (Q25 on main unit) and
5V regulator Q29, Q30 (main unit ).
Low = LCD backlight on.
nal connector J3 (main unit). Low = External PTT switch on.
signal from external connector J3 (main
unit). Low = External dimmer switch on.
unit).
IC5 (main unit).
expander IC11 (main unit).
Output ports for the key matrix.
Input ports for the key matrix.
5A-5
November 1998
Part No. 001-7600-001
VHF (7610) CIRCUIT DESCRIPTION
Pin
No.
51BMOutpu ts control signal for beep mute cir-
52-54CTDA0-
55HANGInput port for the microphone hanger
90MTONE Output port for beep audio while receiving
91TONED Outputs DTMF signa l s.
94-96OPV3-
97CTCINInput port for the CTCSS/DTCS IN
98SDInput port for S-meter signal.
99LVINInput port for PLL lock voltage.
100TEMPInput port for the transceiver’s internal
Port
Name
CTDA2
OPV1
Description
cuit Q10. High = Beep muted.
Output port for CTCSS/DTCS signals.
detection signal. Low = Microphone on
hook.
and 2/5 tone signals while transmitting.
Input port for option connector J2 state
(main unit).
decode signals.
temperature.
5.4.3 VHF I/O EXPANDER IC5 (MAIN UNIT)
Pin
No.
Port
Name
Description
5.4.4 VHF P ORT EXPANDER IC11 (MAIN UNIT)
Pin
No.
4T5COutputs control signal for T5 and R5 regu-
5TMUTOutputs Tx mute switch Q19, Q23 (main
6RMOutputs AF mute switch IC4 (main unit)
7MMOutputs MIC mute control signal. High =
11HORNOOutputs external device control signal.
12AFONOutputs control signal for the AF amplifier
13AFHPFOutputs AF filter control signal. High =
14NWCOutputs receive/transmit passband width
Port
Name
Description
lator circuits Q27, Q28 (main unit). High =
Transmitting.
unit) control signal. High = Tx muted.
control signal for the receiver circuit. High
= No receive audio is emitted.
DTMF signals are output, etc.
High = Matched 2/5-tone signals are
received.
regulator circuit. High = Squelch is open,
etc.
Filter out CTCSS or DTCS frequency.
control signal. High = Narrow bandwidth
is selected.
2, 3, 10T1-T3Output tunable bandpass filter control
signals.
11T4Output port for tunab le band pas s f ilter
control signal while receiving and power
control signal while transmitting.
14REFOutput port for ref erence frequency
control voltage.
November 1998
Part No. 001-7600-001
5A-6
UHF (7640) CIRCUIT DESCRIPTION
SECTION 5B UHF (7640) CIRCUIT DESCRIPTION
NOTE: The UHF transceiver bl ock diagram i s locate d
on page 8-6.
5.5 UHF RECEIVER CIRCUIT
5.5.1 ANTENNA SWITCHING CIRCUIT
The antenna switching circuit functions as a lowpass filter w hile receiving and a resonator circuit
while transmitting. This prevents the transmit signal
from entering the receive r in the transmit mode.
Received signals ent er th e antenna connector and
pass through a low-p ass filt er consi sting of L 1-L3, C1,
C2, and C9-C12. The filtered signal is then fed
through a quarter-wave type antenna switching circuit
formed by D4, D5, and L15 and applied to the
receiver RF circuit.
5.5.2 RF CIRCUIT
The RF circuit amplifies the frequen cies that are
within the receive band range and attenuates out-ofband signals.
The signal from the antenna switching circuit
passes through attenuator D4/D5. The attenuator circuit functions only when the attenuator function is
assigned to a programmable key. It is enabled to minimize RF amplifier distortion caused by excessively
strong receive signals.
When the attenuator function is turned on, CPU
IC1, pin 32 switches the voltage level of the “RF
ATT” line from high to low and then controls the
attenuator switch Q1. The D4/D5 current then
increases and D4/D5 act as an attenuator.
This signal is then applied to a two-stage tunable
bandpass filter controlled by D7 and D8. The filtered
signals are amplified by RF amplifie r Q2 and applied
to another two-stage bandpass filter controlled by D9
and D10. These filters attenuate unwanted signals.
The filtered signal is then applied to the fi rst mixer
Q3.
The tunable bandpass filters controlled by D7D10 employ varactor diode s to tune t hem to the cente r
frequency of the RF passband. This gives a wide
bandwidth receiver good image response rejection.
The diodes are controlled by the CPU IC1 via level
controller IC12.
5.5.3 FIRST MIXER AND FIRST IF CIRCUITS
The first mixer circuit converts the received signal to a fix ed fr equency first IF signal of 46.350 MHz.
The RF signal from the bandpass filter is applied to
the first mixer Q3. This signal is mixed with the first
LO signal from VCO Q23 and buffe rs Q28 and Q30 to
produce the IF signal.
The 46.350 MHz first IF signal then passes
through a pair of crystal filter s (FI1A/ B) which suppress out-of-band signals. The filtered signal is then
amplified by first IF amplifier Q4 and applied to
second IF s ystem IC1.
5.5.4 SECOND IF AND DEMODULATOR
CIRCUITS
The second mixer circuit converts the 46.350
MHz first IF signal to a 450 kHz second IF signal. A
double-conversion superheterodyne receiver like this
improves the image rejection ratio and provides a
stable receiver gain.
FM IF system IC1 contains seco nd mixe r, limiter
amplifier, quadrature detect or, active filter and noise
amplifier c ircuits (see Figure 5-4). The first IF signal
from IF amplifier Q4 is applied to IC1, pin 16 which
is the input to the se cond mixer section. The 46.350
MHz first IF signal is mixed with the 45.900 MHz
second LO signal to produce the 450 kHz second IF
signal. The PLL reference frequency of 15.300 MHz
is tripled to produce the 45.900 MHz second LO
signal.
The second IF signal is fed out of IC1 on pin 3
and applied to ceramic filters FI2 and FI3 with nar row
band operation or only FI2 with wideband operation
(bypassing FI3). It is then fed back into IC1 on pin 5
5B-7
November 1998
Part No. 001-7600-001
UHF (7640) CIRCUIT DESCRIPTION
Figure 5-4 Second IF System IC1 (UHF)
Figure 5-5 Audio Switching and Amplifier Circuit (UHF)
and applied to the limiter amplifier and quadrature
detector. The quadrature detector demodulates the
audio signal contained in the second IF signal. Components connected to pins 10 and 11 including X1
are part of the quadrature detector. The audio signal is
fed out on pin 9 (IC1) and applied to the AF amplifier
circuit.
5.5.5 AUDIO AMPLIFIER CIRCUIT
The AF (audio frequency) amplifier circuit provides drive to the speaker (s ee block diagr am in Figure
5-5). The audio signal from I C1, pin 9 i s appl ied t o AF
amplifier I C7b and then fed to high-pass filter IC6c/
IC6d. The cut-off frequency of this filter is controlled
by the “AFHPF” line. When “AFHPF” is high, the
cut-off frequency is shifted higher to attenuate the Call
Guard (CTCSS or DTCS) signals.
The filtered output signal on IC6d, pin 14 is
applied to pin 8 of AF switching circuit IC11. The
switched output signal on IC11, pin 9 is then applied
to pin 16 of level controller IC12. This device allows
the CPU to control the speaker volume level. The volume controlled output on pin 15 is then applied to pin
2 of AF switching circuit IC11. The switched output
on pin 1 is applied to pin 4 of de-emphasis circuit
IC4a. The signal is then amplified by IC9 to provide
drive to the speaker.
5.5.6 RECEIVER MUTE CIRCUIT
Noise Squelch
The noise squelch circuit turns off the audio signal when no RF signal is being received. The squelch
circuit is controlled by the amount of noise present in
the audio signal.
November 1998
Part No. 001-7600-001
5B-8
UHF (7640) CIRCUIT DESCRIPTION
Part of the AF signal from pin 9 of FM IF circuit
IC1 is applied to pin 24 of level controller IC12. This
device allows the CPU to control t he squelc h thres hold
level. The level-controlled output signal on pin 23 is
applied to IC1, pin 8 which is the input of an internal
filter (see Figure 5-4). Noise frequencies are passed
and then fed out on pin 7 and also applied to an internal noise detector.
The detected noise signals are rectified and fed
out on pin 13 without smoothing. The noise signal
(NOIS) is then applied to pin 19 of CPU IC1. The
CPU analyzes the noise condition and outputs the
RMUT signal via I/O expander IC13. This signal controls AF mute switch IC11a (see Figure 5-5).
Call Guard (CTCSS/DTCS) Operation
The tone Call Guard squelch circuit detects AF
signals and opens the squelch only when receiving a
signal containing a matching subaudible tone or code
(CTCSS or DTCS). When tone squelch is in use and a
signal with a mismatched or no subaudible tone is
received, the tone squ elch ci rcuit mutes the AF signa ls
even when noise squelch is open.
A portion of the audio signal f rom amplif ier IC7b
passes through low-pass filter Q5 in the front unit to
remove voice signals . It is then applied to CPU IC1 on
pin 97 via the “CTCIN” line. The CPU detects the
CTCSS or DTCS signaling and controls the AF mute
switch via I/O I/O expander IC13.
The output signal from IC11 on pin 10 is fed to
pin 16 of level controller IC12. This device provides
deviation control and is also used in the receive mode
to provide volume control . The level controlled output
on pin 15 is fed to pin 3 of switching circuit IC11. T he
switched output (MOD) on pi n 4 is then applied to the
PLL circuit (D21) where it frequency modulates the
transmit si gnal.
Narrow band/wideband switch Q35 is connected
to the input of the splatter filter IC7a and switched by
the “NWC” signal from the I/O expander IC13. When
“NWC” is high, Q35 shifts the filter cut-off frequency
for narrow band deviation selection.
5.6.2 MODULATION CIRCUIT
The microphone audio signal modulates the frequency of transmit VCO Q25. The “MOD” signal
from switch IC11, pin 4 changes the reactance of
diode D21 and this modulates the frequency of transmit VCO Q25. The modulated VCO signal is amplified by buffer amplifiers Q28 and Q30 and applied to
the transmit driver circuit (Q21).
5.6.3 TRANSMIT DRIVER CIRCUIT
The transmit driver circuit amplifies the VCO
oscillating signal to the level required by the power
amplifier module. The RF sig nal fr om buf f er ampl if ier
Q30 passes through the T/R switch D18 and is amplified by the buffer amplifiers Q21, Q20, and driver
Q19. The signal is then applied to the power amplifier
module IC5.
5.6 UHF TRANSMITTER CIRCUIT
5.6.1 MICROPHONE AMPLIFIER CIRCUIT
The microphone amplifier circuit amplifies the
microphone audio signal to the level required by the
modulation circuit and also provides pre-emphasis.
The microphone audio signal is amplified by
IC8b and limited by IC8a. Pre-emphasis is provided
by R152 and C180. The signal is then fed to splatter
filter IC7a and then to pin 11 of switching circuit
IC11.
5.6.4 POWER AMPLIFIER MODULE
The power amplifier module amplifies the driver
signal to the output power level. The RF signal from
the driver Q19 is applied to the power module which
produces 35 watts of out put power at the antenna jack.
The amplified signal is fed through antenna
switching circuit D3, a low-pass filter and APC detector, and is then applied to the anten na jack. The collector voltage of driver Q19 and the control voltage on
pin 2 of the power module IC5 come from APC transistors Q17 and Q18. Transmit switch Q16 turns off
Q17 and Q18 when the transmitter is disabled.
November 1998
5B-9
Part No. 001-7600-001
UHF (7640) CIRCUIT DESCRIPTION
Figure 5-6 PLL Circuit (UHF)
5.6.5 APC CIRCUIT
The APC (Automatic Power Control) circuit protects the power amplifier from damage caused by a
mismatched antenna load, and provides a st able power
output.
One diode in D1 detects forward signals and the
other detects reverse signals. The combined voltage is
at minimum level when a matched antenna load of 50
ohms is present and then increases as it becomes mismatched. The detected voltage is applied to pin 6 of
inverse amplifier IC4b. Power setting voltage T4 is
applied to the other input (pin 5) as a reference.
When antenna impedance is mismatched, the
detected voltage exceeds the power setti ng voltage.
The output voltage on pin 7 then decreases which
turns Q17 off slightly. Transistor Q18 then turns off
slightly and lowers the voltage applied to the collector of Q19 and the power control input of IC5. This
reduces the output pow er produced by these devices.
5.7 UHF PLL CIRCUIT
5.7.1 PLL CIRCUIT
The PLL (Phase-Locked-Loop ) circuit provides a
stable (± 2.5 PPM) receive first injection and transmit
frequency. The PLL circuit consists of PLL circuit
IC2, a loop filter, and reference oscillator. A block
diagram of the PLL circuit is shown in Figure 5-6.
The signal from VCOs (Voltage-Controlled
Oscillator) Q23 and Q25 is buffered by Q28 and Q29
and then applied to pin 2 of IC10. The prescaler in
IC10 divides the VCO signal down so that it is within
the frequency range of the programmable counter.
A reference frequency generated by reference
oscillator X2 is applied t o pin 15 of IC1. This signa l is
divided down by a programmable divider and provides the reference input to the phase detector. When
the VCO is oscillating at the correct frequency, the
VCO-derived input to the phase detector is the same
frequency as the refere nce input.
November 1998
Part No. 001-7600-001
5B-10
UHF (7640) CIRCUIT DESCRIPTION
The phase detector determines the phase difference between these signals and then produces output
pulses on pin 8 which are filtered by the loop filter.
This filter consists of Q34, R180, R181, and C202C204. The output of this filter is the DC control voltage applied to the VCO. The phase detector increases
or decreases this control voltage to change the VCO
frequency.
5.7.2 VCO CIRCUIT
Separate receive and transmit VCOs are used.
The receive VCO consists of Q23/D20/D34 and the
transmit VCO consists of Q25/D22/D33. The signal
from these VCOs is amplified by buffer amplifiers
Q28 and Q29 and is then applied to T/R switch D18
and D19. The VCO receive injection signal is applied
to first mixer Q3, and the VCO transmit signal is
applied to driver Q21. Part of the Q28 output signal is
amplified by Q29 and fed back to PLL IC10, pin 2 as
described in the preceding section.
5.7.3 UHF POWER SUPPLY
Line Description
VCC Unswitched input voltage to the transceiver.
HVVCC supply voltage switched by Q14 and Q15.
When the [POWER] switch is pressed, the CPU
outputs the “PWON” control signal to this circuit
to turn the HV supply on.
CPU5V Common 5V supply for the CPU produced from
the VCC supply by CPU5V regulator IC3. The
circuit outputs this voltage regardless of the
transceiver on-off condition.
8VCommon 8V supply produced from the HV
supply by 8V regulator IC2.
5VCommon 5V supply produced from the HV
supply by 5V regulator Q12/Q13.
R8Receive 8V supply produced by R8 regulator
Q10/Q11 using the “TXC” signal from I/O
expander IC13.
T8Transmit 8V supply controlled by T8 regulator
Q8/Q9 using the “TMUT” signal from I/O
expander IC13.
5.7.4 UHF CPU IC1 PORT ALLOCATION
Pin
No.
1VINInput port for overvoltage detection from
12SCKOutputs clock signal to EEPROM IC3,
13SIInput port for the data signal from
14SOOutputs data signal to EEPROM IC3, PLL
16CLINInput port for cloning signal.
17CLOUT Output port for cloning signal.
18POSWInput for the POWER switch. Low =
19NOISNOIS signal input port from the FM IF
26PTTInput port for the PTT switch. Low = PTT
32RF ATTOutputs RF attenuator control signal to the
36UNLKInput port for PLL unlock signal from the
37PWONOutputs control signal for the power
38DIMOutputs control signal for LCD backlight.
39EXTPTT Input port for the PTT switch from exter-
40DIMInput port for the LCD backlight control
41PLSTOutputs strobe signals fo r PLL IC10 (main
42DASTOutputs strobe signals for level controller
43EXSTOutputs strobe signals for the I/O
45, 46KS1,
47-50KR3-
Port
Name
KS2
KR10
Description
the vehicle power source.
PLL IC10 (main unit) and expanders
IC12, IC13 (main unit), etc.
EEPROM IC3, etc.
IC10 (mai n unit) and expanders IC12,
IC13 (main unit).
POWER switch pushed.
IC1 (main unit) for noise squelch
operation.
switch pushed.
attenuator switch (Q1 on main unit).
Low = Attenuator function on.
PLL IC10 (main unit). High = unlock.
switching circuit (Q14/Q15 on main unit).
Low = LCD backlight on.
nal connector J5 (main unit). Low =
External PTT s witch on.
signal from external connector J5 (main
unit). Low = External dimmer switch on.
unit).
IC12 (main unit).
expander IC13 (main unit).
Output ports for the key matri x.
Input ports for the key matrix
5B-11
November 1998
Part No. 001-7600-001
UHF (7640) CIRCUIT DESCRIPTION
Pin
No.
51BMOutpu ts control signal for beep mute cir-
52-54CTDA0-
55HANGInput port for the microphone hanger
90MTONE Output port for beep audio while receiving
91TONED Outputs DTMF signa l s.
94-96OPV3-
97CTCINInput port for the CTCSS/DTCS IN
98SDInput port for S-meter signal.
99LVINInput port for PLL lock voltage.
100TEMPInput port for the transceiver’s internal
Port
Name
CTDA2
OPV1
Description
cuit Q10. High = Beep muted.
Output port for CTCSS/DTCS signals.
detection signal. Low = Microphone on
hook.
and 2/5 tone signals while transmitting.
Input port for option connector J4 state
(main unit).
decode signals.
temperature.
5.7.5 UHF I/O EXPANDER IC12 (MAIN UNIT)
Pin
No.
Port
Name
Description
5.7.6 UHF PORT EXPANDER IC13 (MAIN UNIT)
Pin
No.
4TXCOutputs control signal for R8 regulator
5TMUTOutputs control signal for T8 regulator
6RMOutputs AF mute switch IC11(main unit)
7MMOutputs MIC mute control signal. High =
11HORNOOutputs external device control signal.
12AFONOutputs control signal for the AF amplifier
13AFHPFOutputs AF filter control signal. High =
14NWCOutputs receive/transmit passband width
Port
Name
Description
Q10/Q11 (main unit). High = Transmit
mode.
Q8/Q9 (main unit). High = Transmitter
off.
control signal for the receiver circuit. High
= No receive audio is emitted.
DTMF signals are output, etc.
High = Matched 2/5-tone signals are
received.
regulator circuit. High = Squelch is open,
etc.
Filter out CTCSS or DTCS frequency.
control signal. High = Narrow bandwidth
is selected.
2, 3, 10T1-T3Output tunable bandpass filter control
signals.
11T4Output port for tunab le band pas s f ilter
control signal while receiving and power
control signal while transmitting.
14REFOutput port for ref erence frequency
control voltage.
November 1998
Part No. 001-7600-001
5B-12
SECTION 6 ADJUSTMENT PROCEDURE
Progra mming Cable
Part No. 585-7500-031
ADJUSTMENT PROCEDURE
50 Ohm, 50W
Load
Wattmeter
Frequency
Monitor
13.6 Volt, 17A
Power Supply
Test Cable (Fabricated)
Figure 6-1 Test Setup
6.1 GENERAL
6.1.1 SUGGESTED TEST EQUIPMENT
The equipment that should be used to adjust this
transceiver is listed in the following table.
EquipmentGrade and Range
DC power supply Output voltage13.6 VDC
Current capacity15A
RF power meterMeasuring range1-50 W
Freq range146-512 MHz
Impedance50 ohms
SWRLess than 1.2:1
Frequency counter Freq range0.1-500 MHz
Freq accuracy±1 ppm or better
Sensitivity100 mV or better
4.0 Ohm Speaker Load
EquipmentGrade and Range
FM deviation
meter
Audio generatorFreq range67-3000 Hz
AttenuatorPower atten.50 or 60 dB
Standard Si gnal
Generator (SSG)
DC voltmeterInput impedance50kΩ/V DC or
OscilloscopeFreq rangeDC-20 MHz
AC millivoltmeter Measuring range10 mV - 10V
External SpeakerInput Impedance4
Freq rangeDC-520 MHz
Measuring range0 to ±10 kHz
Output level1-500 mV
Capacity50W
Freq range146-520 MHz
Output level0.1 µV-32 mV
(–127 to –17 dBm)
better
Measuring range0.01-20V
Ω
Power Capacity5 watts min.
6-1
November 1998
Part No. 001-7600-001
ADJUSTMENT PROCEDURE
Supply Voltage
Internal Temp
PLL Lock Voltage
RSSI
DTCS Bal Level
Squelch Level
Selected Channel Info
RF Power Output
FM Deviation
DTCS Balance
Reference Frequency
Rx Bandpass Filter
IC5/IC12 D/A Outputs
Adjusts Current Vol Level
Squelch Level
NOTE: The above values for the various settings are examples only . Because of compo nent
tolerances, the optimum setting for each transceiver will probably be different.
Figure 6-2 Screen Display Example
Programming Cable
To Computer
Pin 2 (Clone)
PTT
Sw
Pin 5 (MICE “+”)
Pin 6 (MIC “–”)
Figure 6-3 Test Cable Schematic
6.1.2 TEST CHANNELS
NOTE: Before programming the test channels, download the current programming data in the transceiver
and save it to a disk fil e so t hat i t can be reloaded after
the adjustments are complete.
Test channels at the low, middle (VHF only), and
high ends of the operating band, and High, Low1, and
Low2 RF output power are required to perform the
adjustments in this section. These test channels are
listed in Tables 6-1 and 6-2, and they must be programmed as regular channels using the programming
Pin 4 (PTT)
Pin 8
Pin 1
To Transceiver
Mic In
Pin 7 (Ground)
software described in Sect ion 4. The re are no fixed t est
channels or test modes selectable with this transceiver.
6.1.3 TEST CABLE
The test cable shown Figure 6-3 in must be fabricated to perform tr ansceiver alignment. This cable is
used in place of the adapt er cabl e shown in Figure 4- 1.
It is required because in addition to connecting the
computer to the microphon e jack, a tr ansmit audio and
keying (PTT) signal must be applied to that jack. If
desired, Replication Cable, Part No. 597-2002-200,
can be modified to provide the 8-pin modular-style
connector required for this test cable.
November 1998
Part No. 001-7600-001
6-2
Table 6-1 VHF Test Frequenci es
ADJUSTMENT PROCEDURE
Test Channel
1174.050Low1NoneNarrow or wide
2146.050Low1NoneNarrow or wide
3160.050HighNoneNarrow or wide
4160.050Low2NoneNarrow or wide
5160.050Low1NoneNarrow or wide
6160.050Low1007N DTCSNarrow or wide
7 [1]160.050Low1NoneAlternate
8 [1]160.050Low1007 DTCSAlternate
[1] If the transceiver operates on only narrow or wide band channels, program only chan-
nels 1-6, and program them for th e typ e of chann els use d (narro w or wide ban d). If the
transceiver operates on both wide and narrow band channels, program additional
channels 7 and 8 for the other type of operation.
Tx/Rx Freq
(MHz)
Power
Call Guard
Squelch
Bandwidth [1]
Table 6-2 UHF Test Frequencies
Test Chan nel
1 400.050 450.050 470.050 490.050 Low1NoneNarrow or wide
2430.050470.050490.050512.050Low1NoneNarrow or wide
3400.050450.050470.050490.050HighNoneNarrow or wide
4400.050450.050470.050490.050Low2NoneNarrow or wide
5400.050 450.050 470.050 490.050 Low1007N DTCS Narrow or wide
6 [1]400.050450.050470.050490.050Low1NoneAlternate
7 [1]400.050450.050470.050490.050Low1007N DTCS Alternate
[1] If the transceiver operates on only narrow or wide band channels, program only channels 1-5, and program them for
the type of channels used (narrow or wide band). If the transceiver operates on both wide and narrow band channels,
program additional channels 6 and 7 for the other type of operation.
400-430 MHz 450-470 MHz 470-490 MHz 488-512 MHz
Model (see Section 1.4)
Power
Call Guard
Squelch
Bandwidth [1]
6.1.4 COMPUTER-AIDED TUNING
To make most adjustments described in the following information, the computer setup used for programming (see Section 4) and special Adjust software
are required. The Adjust
software is included on the
disk with the programming software in a separate subdirectory called ADJ. To set up the transceiver for use
with this equipment, proceed as follows:
1. Copy the Adjust software to the hard disk or a pro-
gramming disk as described in Section 4.1.3
2. Turn transceiver power on
and connect the computer to the transceiver microphone jack using the
programming cable and fabricated test cabl e
described in the preceding section (see Figure 6-1).
3. Start the computer in the DOS mo de. Make the cur rent directory the ADJ subdirectory and start the
program by typing the following:
ADJUST /X /Y
X
= A - VHF (normal crystal), B - UHF (TCXO)
Y
= 1 - Serial port 1, 2 - Serial port 2
For example, if tuning a VHF transceiver and the
programming cable is connected to serial port 2 of the
computer, type ADJUST /A /2 (ENTER).
4. The tune data in the connected transceiver is then
downloaded and the adjustment screen shown in
Figure 6-2 is displayed. The information displayed
November 1998
6-3
Part No. 001-7600-001
ADJUSTMENT PROCEDURE
VHF ADJUSTMENTS
in the upper part of the scr een is for the currently
selected channel.
5. To move the cursor between the parameters on the
left side of the bar graph, press the ↑ ↓ arrow keys.
T o change a parameter , press the ←
→
, PgUp/PgDn,
backspace, or spacebar keys. Refer to the indivi dual
adjustment desc riptions for more inform ation on the
functions performed us ing this screen.
6.1.5 REPROGRAMMING IF EEPROM IS REPLACED OR ERROR OCCURS
When EEPROM IC3 is replaced or if the transceiver disp lays an error message and be eps, the following operation must be performed before making
any adjustments.
1. Using the programming software, read (download)
the data programmed in an exact same version of
the transceiver. Refer to Section 4.4. 4 for more
information on reading data.
2. Select the MODEL menu and press the down arrow
( ↓ ) key. Type “RESERVE” and press (ENTER).
The “Reserved” indicator should begin flashing in
the upper ri ght corner of the screen.
3. Connect the computer t o the transceiver that had the
EEPROM replaced or is displaying the error (see
Figure 4-1). Write the current data to that
transceiver .
6.2 PRELIMINAR Y SETUP
1. Preprogram the transceiver with test channels as
described in Section 6.1.2.
2. Connect the computer test set up using the test cable
described in Sections 6.1.3 and 6.1.4. Start the
program as described.
3. Connect a DC power supply and a 50-ohm, 50-wat t
antenna load to the transceiver (see Section 6.1.1).
VHF ADJUSTMENTS
6.3 PLL ADJUSTMENT (VHF MODELS)
1. Remove the bottom cover by removing four scr ews.
Connect a DC voltmete r to c heck po int CP1 sho wn
in Figure 6-4.
2. Select the channel on the high end of the band
(Test Ch. 1 - 174.050 MHz). This is done by pressing the ↑ ↓ arrow keys to highlight “Memory CH”
and then pressing the adjust keys (←/
PgDn, or spacebar/back space) to s elect the channel.
3. Key the transmitter using the switch on the test
cable and the meter reading should be 4.3 volts. If
this voltage is significantly different, adjust L14 (it
may be necessary to remove the VCO shield).
4. Unkey the transmitter and the mete r reading in the
receive mode should be 3.3 – 4.3 volts.
→,
PgUp/
5. Select the channel on the low end of the band (Test
Ch. 2 - 146.050 MHz). The meter reading should b e
0.9 – 1.9 volt in both the transmit and receive
modes. Replace the bottom cover.
6.4 TRANSMITTER ADJUSTMENTS (VHF
MODELS)
6.4.1 REFERENCE FREQUENCY
1. Select the channel on the high end of the band (Test
Ch. 1 - 174.050 MHz).
2. Scroll down to “TXF SET” on the scree n and pre ss
(Enter). Mon itor the transmit signal with a frequency counter and key the transmitter using the
test cable switch.
3. Adjust for the displayed frequency by pressing the
computer adjust keys. Unkey the transmitter.
November 1998
Part No. 001-7600-001
6-4
VHF ADJUSTMENTS (CONT’D)
ADJUSTMENT PROCEDURE
Figure 6-4 VHF Adjustment Points
4. Press (Enter) again to select th e second adju st chan nel. Key the transmitter and adjust for the di splayed
frequency. Unkey the t ransmitter and press (Ent er)
again to exit this function.
6.4.2 OUTPUT PO WER ADJUST
L14
PLL lock voltage
adjustment
CP1
PLL lock voltage
check point
puter adjust keys to se t the followin g power . Unkey
the transmitter. Repeat for the Low2 (Test Ch. 4)
and Low1 (Test Ch. 5) power levels.
High Power = 45 watts (Test Ch. 3)
Low2 Power = 25 watts (Test Ch. 4)
Low1 Power = 4.5 watts (Test Ch. 5)
1. Select the high power channel in the middle of the
band (T e st Ch. 3 - 160.050 MHz). Connect a power
meter to the antenna jack.
2. Scroll to “Power (Hi)” on the screen and key the
transmitter using the test cable switch. Use the com-
6.4.3 FM DEVIATION ADJUST
1. Connect an audio generator to the microphone
audio input of the test cable (pin 5 shown in Figure
6-3). Set the generator output for 1 kHz at 40 mV
rms.
November 1998
6-5
Part No. 001-7600-001
ADJUSTMENT PROCEDURE
VHF ADJUSTMENTS (CONT’D)
2. Select the low power channel in the middle of the
band (Test Ch. 5 - 160.050 MHz). On the c omputer
screen, scroll to “MOD N” if setting narrow band
deviation or “MOD W” if setting wideband
deviation.
3. Monitor the transmit deviation with a communications monitor set as foll ows: HPF = Off, LPF = 20
kHz, De-Emphasis = Off, Detector = (P–P)/2.
4. Key the transmitter using the test cable switch and
set the following maximum deviation by pressing
the adjust keys (←/
5. If the transceiver operates on both narrow and wide
band channels, select Test Ch. 7 and also adjust the
deviation on that channel (see note in Table 6-1).
6.4.4 DTCS WA VEFORM ADJUST
1. Select a channel in the middle of the band programmed for DTCS (T est Ch. 8 - 160.050 MHz). On
the computer screen, scroll to “DTCS N” if setting
a narrow band channel or “DTCS W” if setting a
wideband channel.
2. Connect an RF signal generator to the antenna jack.
Set the output for the channel frequenc y at a level of
3.2 µ V (–97 dBm), modulated with 1 kHz at the
following deviation:
3. Adjust the filters au tomatically or manually as
follows:
Automatic Adjustment Method 1
(Adjusts all filters)
a. Select “BPF T1” on th e screen and adjust for “0”.
Repeat for T2 – T4. Reselect “BPF T1”.
b. Press the F9 key and all filters are automaticall y
adjusted for peak levels.
Automatic Adjustment Method 2
(Adjusts only one filter at a time)
a. Select “BPF T1” and press F8 to automatically
adjust it for a peak level.
b. Repeat for the other three filters.
Manual Adjustment
2. Key the transmitter and view the demodulated signal on the CRT of a communications monitor.
3. Press the adjust keys on the computer so that the
waveform appears as follows:
Set For
Flat
Waveform
4. If the transceiver operates on both narrow and wide
band channels, select Test Ch. 8 and also set the
waveform on that channel (see note in Table 6-1).
6.5 RECEIVER ADJUSTMENTS (VHF MODELS)
6.5.1 BANDPASS FILTER ADJUST
1. Select the channel on the low end of the band (Test
Ch. 2 - 146.050 MHz).
November 1998
Part No. 001-7600-001
a. Connect a SINAD met er with a 4-ohm load to the
external speaker jack (see Figure 6-4).
b. Select “BPF T1” and press the adj ust keys (←/
PgUp/PgDn, or spacebar/backspace) to obtain
minimum distortion.
c. Repeat for the other three filters.
6.5.2 SQUELCH ADJUST
NOTE: The squelch level can also be set from the
front panel as described in Section 3.3.6.
1. Select the channel on the low end of the operating
band (Test Ch. 2 - 146.050 MHz).
2. Connect a SINAD meter with a 4-ohm load to the
external speaker jack.
6-6
→,
VHF ADJUSTMENTS (CONT’D)
ADJUSTMENT PROCEDURE
3. Connect an RF signal generator to the antenna jack.
Set it to the channel frequen cy wit h an out put mod ulated with 1 kHz at the following deviation:
4. Scroll to “SQL” on the computer screen and press
the adjust keys to lower the displayed number so
that the receiver unsquelches (the 1 kHz tone is
heard). Also adjust the volume if necessary.
5. Adjust the signal generator output to obtain 8 dB
SINAD.
6. Press the computer adjust keys to increase the displayed number to the point where the receiver
squelches. Then slowly adjust the number downward again until the receiver just unsquelches.
6.5.3 BEEP TONE LEVEL
This adjustment sets the volume of the beep tone
that is heard when keys are pressed and at other times
(if it is enabled). The computer setup used in the preceding steps is not required for this adjustment.
Proceed as follows:
1. Unplug any cable that may be plugged into the
microphone jack and locate R60 inside this jack.
(see Figure 6-5).
2. Repeatedly press a front panel swi tc h to ena ble the
beep tone and adjust R60 for the desired level.
R60
Beep Tone
Level Adj
Figure 6-5 Beep Tone Level Adjustment
6-7
November 1998
Part No. 001-7600-001
ADJUSTMENT PROCEDURE
UHF ADJUSTMENTS
NOTE: Perform the preliminary setup described in
Section 6.2 before proceeding with these adjustments.
6.6 PLL ADJUSTMENT (UHF MODELS)
1. Remove the bottom cover by removing four scr ews.
Connect a DC voltmete r to c heck po int CP1 sho wn
in Figure 6-6.
2. Select the channel at the low end of the band
(T est Ch. 1). This is done by press ing the ↑ ↓ arrow
keys to highlight “Memory CH” and then pressing
the adjust keys (←/
→,
PgUp/PgDn, or spacebar/
backspace) to select the channel.
3. In the receive mode, the met er reading should be 1.5
volts. If this vol tage is signif icantly dif ferent, adj ust
L23 (it may be necessary to remove the shield).
4. Key the transmitter using the switch on the test
cable and the meter reading also shou ld be 1.5 volts.
If this volta ge is signific antly different, adjust L26.
5. Unkey the transmitte r and s el ect t he chan nel on the
high end of the band (T est Ch. 2). Th e meter reading
in the receive and tr ansmit modes should be 3.5 –
5.5 volts. Replace the bottom cover.
6.7 TRANSMITTER ADJUSTMENTS (UHF
MODELS)
6.7.1 REFERENCE FREQUENCY
1. Select the low power c hannel on the high end of th e
band (Test Ch. 2).
2. Scroll down to “TXF SET” on the scree n and pres s
(Enter). Mon itor the transm it signal with a frequency counter and key the transmitter using the
test cable switch.
3. Adjust for the displayed frequency by pressing the
computer adjust keys. Unkey the transmitter.
4. Press (Enter) again to select th e second adju st chan nel. Key the transmitter and adjust for the di splayed
frequency. Unkey the transmitter and press (Enter)
again to exit this function.
6.7.2 OUTPUT PO WER ADJUST
1. Select the high power channel at the low end of the
band (Test Ch. 3). Connect a power meter to the
antenna jack.
2. Scroll to “Power (Hi)” on the screen and key the
transmitter using the test cable switch. Use the computer adjust keys to se t the followin g power . Unkey
the transmitter. Repeat for the Low2 (Test Ch. 4)
and Low1 (Test Ch. 5) power levels.
High Power = 35 watts
Low2 Power = 20 watts
Low1 Power = 3.5 watts
6.7.3 FM DEVIATION ADJUST
1. Connect an audio generator to the microphone
audio input of the test cable (pin 5 shown in Figure
6-3). Set the generator output for 1 kHz at 40 mV
rms.
2. Select the low power channel at the low end of the
band (T est Ch . 1). On the computer scr een, scroll to
“MOD N” if setting narrow band deviation or
“MOD W” if setting wideband deviation.
3. Monitor the transmit deviation with a communications monitor set as foll ows: HPF = Off, LPF = 20
kHz, De-Emphasis = Off, Detector = (P–P)/2.
4. Key the transmitter using the test cable switch and
set the following maximum deviation by pressing
the adjust keys (←/
5. If the transceiver operates on both narrow and wide
band channels, select Test Ch. 6 and also adjust the
deviation on that channel (see note in Table 6-2).
November 1998
Part No. 001-7600-001
6-8
Set For
Flat
Waveform
UHF ADJUSTMENTS (CONT’D)
ADJUSTMENT PROCEDURE
CP1
PLL lock voltage
check point
Figure 6-6 UHF Adjustment Points
6.7.4 DTCS WA VEFORM ADJUST
1. Select the channel on the low end of the programmed for DTCS code 007N (Test Ch. 5).
L23
PLL lock voltage
adjustment
L26
PLL lock voltage
adjustment
4. Press the adjust keys on the computer so that the
waveform appears as follows:
2. On the computer screen, scroll to “DTCS N” if setting a narrow band channel or “DTCS W” if settin g
a wideband channel.
3. Key the transmitter and view the demodulated signal on the CRT of a communications monitor.
5. If the transceiver operates on both narrow and wide
band channels, select Test Ch. 7 and also set the
waveform on that channel (see note in Table 6-2).
November 1998
6-9
Part No. 001-7600-001
ADJUSTMENT PROCEDURE
UHF ADJUSTMENTS (CONT’D)
6.8 RECEIVER ADJUSTMENTS (UHF MODELS)
6.8.1 BANDPASS FILTER ADJUST
1. Select the channel on the low end of the band (Test
Ch. 1).
2. Connect an RF signal gen erator to t he antenna j ack.
Set the output for the channel frequenc y at a level of
3.2 µ V (–97 dBm), modulated with 1 kHz at the
following deviation:
3. Adjust the filters au tomatically or manually as
follows:
Automatic Adjustment Method 1
(Adjusts all filters)
a. Select “BPF T1” on th e screen and adjust for “0”.
Repeat for T2 – T4. Reselect “BPF T1”.
b. Press the F9 key and all filters are automaticall y
adjusted for peak levels.
Automatic Adjustment Method 2
(Adjusts only one filter at a time)
6.8.2 SQUELCH ADJUST
NOTE: The squelch level can also be set from the
front panel as described in Section 3.3.6.
1. Select the channel on the low end of the operating
band (Test Ch. 2). channel with LB models and th e
150.050 MHz channel with HB models.
2. Connect a SINAD meter with a 4-ohm load to the
external speaker jack.
3. Connect an RF signal generator to the antenna jack.
Set it to the channel freque ncy wit h an out put mod ulated with 1 kHz at the following deviation:
4. Scroll to “SQL” on the computer screen and press
the adjust keys to lower the displayed n umber so
that the receiver unsquelches (the 1 kHz tone is
heard). Also adjust the volume if necessary.
5. Adjust the signal generator output to obtain 8 dB
SINAD.
6. Press the computer adjust keys to increase the displayed number to the point where the receiver
squelches. Then slowly adjust the number downward again until the receiver just unsquelches.
a. Select “BPF T1” and press F8 to automatically
adjust it for a peak level.
b. Repeat for the other three filters.
Manual Adjustment
a. Connect a SINAD met er with a 4-ohm load to the
external speaker jack (see Figure 6-6).
b. Select “BPF T1” and press the adj ust keys (←/
PgUp/PgDn, or spacebar/backspace) to obtain
minimum distortion.
c. Repeat for the other three filters.
November 1998
Part No. 001-7600-001
→,
6.8.3 BEEP TONE LEVEL
This adjustment sets the volume of the beep tone
that is heard when keys are pressed and at other times
(if it is enabled). The computer setup used in the preceding steps is not required for this adjustment. Proceed as follows:
1. Unplug any cable that may be plugged into the
microphone jack and locate R60 inside this jack.
(see Figure 6-5).
2. Repeatedly press a front panel switch to enable the
SCK
SI
SO
OPINT
OPCS
NC
AF OUT
DET
RXMUT
BEEPO
AF ON
MIMUT
HV
5V
GND
1
2
3
4
5
6
7
8
C307 4.7
10k
C180
0.0039
R152
5.6k
R204 10k
5.0V
IC1
TA31136FN
OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN
C61
270p
R44 820
R270 1M
C128
0.047
R100
36k
R150
100
3
+
2
-
R151
180k( )
220k( )
D24
DAN202U
2.4V
10
9
8
1
4
R266
P
L
Q37
DTC144EU
C240
0.001
AFOUT
+
-
C179
0.1
TX:2.0V
RX:3.8V
10k
MIXIN
GND
N-REC
N-DET
RSSI
IFOUT
QUAD
IC6c
NJM2902M
C319
0.1( )
0.0047( )
R205
C239
C58
C59
0.001
R99
2.2k
8
10k
0.001
0.001
C57
16
15
14
13
12
11
10
9
R41
470
TXC
Q42
DTC144EU
2.4V
P
L
RMUT
4.7
R42
NOIS
C127
0.047
R279
100k
L
82k( only)
X1
CDBCA450CX24
C52 100p
C56 0.001
R38 47k
R39 47k
SD
C60 0.01
AFHPF
R98
47k
R97
47k
C126
0.047
R162
470k
C283
470p
T1
T2
DAST
SCK
SO
T3
T4
R40
2.2k
C51
100p
R37
1.2k
C55 0.001
TX:4.7V
RX:0V
Q22
2SC4081
R95
47K
R96
91k
R161
470k
DTCS
0.85V
p-p
CTCSS
0.7V
p-p
DTMF
3.5V
p-p
5 TONE
3.2V
p-p
C328 47pC231 0.001
C326 47p
C327 47p
C325 47p
C228 0.001
C229 0.001
C230 0.001
TX:0V
RX:7.3V
R36
100
L15
0.18µH
C50 68p
C49 0.001
R35
120K
Q4
2SC4215
TX:0V
C48
0.001
RX:0.7V
R34
C301
TXC
C329
R94 1.5k
14
R147
5
+
6
-
2.4V
VDAREF
330
4p
47p
10k
(PMR only)
VIN6
VOUT8
VOUT7
VIN7
GND
RESET
VIN6
VOUT6
VOUT5
VIN5
C46
0.001
FI1 FL-287
Q44
DTC144EU
2.4V
2.4V
R144
22k
R145
75k
R146
82k
(LMR only)
24
23
22
21
20
19
18
D0
13
C54
0.001
Q5
2SC4081
Wide:0.6V
Narrow:0V
L
C342
0.001( only)
2.4V
12
+
13
-
IC6d
2.4V
NJM2902M
IC6b
NJM2904M
2.4V
7
R148
100k
R199
470
4.9V
IC12
M62363FP-650C
1
VIN1
2
VOUT1
3
VOUT2
4
VIN2
5
VDD
6
LD
7
CLK
817
DI
916
VIN3
1015
VOUT3
1114
VOUT4
12
VIN4
C226
0.01
C227 0.01
R32
100
L13
0.12µH
L14
56nH
TX:0V
RX:0.7V
FI1b
TX:0V
RX:7.8V
Q45
DTA144EU
C335
47p
C174
0.1
C175
0.1
C176
2.2
R33
330
C47 12p
R268
10k
TX:0V
RX:6.6V
C45 68p
R31
22
Q3
2SK241
R269
39k
DTCS
C44 0.001
FI1a
C330
47P
R142
10k
R141
10k
C331
0V
RX:APPROX.
+3VdBm
C303 0.001
R30 68
C300 4p
C298
C339
0.001
470P
0V
47p
L
( only)
TONE
DTCS
R198
10k
2.5µ( )
1.5p(ML/MH)
0.5p(H)
R25 100k
C43 0.001
TX:4.7V
RX:0V
L
L11 15nH
C38
C42 3p
R28
18
R29 270
C225
0.01
IC11
BU4066BCF
1
I/O
2
O/I
3
O/I
4
I/O
5
CONT B
6
CONT C
7
VEE
TX:0V
RX:5.1V
L12
39nH
R27 270
C347
VDD
CONT A
CONT D
Q36
DTC144EU
RX MUTE:0V
5V
SIGOUT
HV
0.001
C333
I/O
O/I
O/I
I/O
C313
47p
C41 1p
5V
HV
T8V
R8V
C121
L
( only)
C119
R140
47p
R25
R23
10p
R24
10k
C40
0.001
270
14
13
12
11
10
9
8
C348
C37
1p ( L )
0.3p(Other)
100k
220k
47p
R86
R87
D19
R139
18
0.22
C39
7p( L )
D10
HVU350
C312 47p
1k
10k
MA77
2.1V
( only)
L
C345
0.001
R138
270
TXC
RMUT
TX:0V
RX:7.9V
6p( ML )
5p(Other)
RX:2.2V
T4
C120
D23
C167
470p
7.9V
C165
C33
47p
C36
0.5p
R21
MA111
10
6p
R20
220k
C35
E
TX:0V
RX:7.7V
1.5p( ML )
2p ( MH )
C31 0.001
2.5p(H only)
4p(Other)
0.001
R277 470
C116
R133
10
L30
27nH
R134
4.7k
Q30
2SC5110
C172 5p
R195
220k
Q35
2SC4081
47p
R18 68
0.001
R135
4.7k
C171
4p
C170
WIDE:0V
NAR:0.6V
R211
100k
C308
1p
C310
R79
L21
TX:7.6V
RX:0V
TX:2.3V
RX:0V
C161
5p
C221
0.0027
C223 12p
R16 47k
C30
0.001
C317
47p
47p
22
C113 7p
R80
220
470p
3.1V
C160
R194
180k
C238
10
TX:0V
RX:2.5V
0V
C29
R15 47k
T2
L
18nH( -H
only)
C338
R272 1k
7p
L32
0.56µH
C222
18p
FD
R210
1M
R212
C23
2p ( L )
1.5p(ML/MH)
L8 15nH
R14
10k
22nH(Other)
7p( )
5p( -H)
6p(Other )
R77
3.3k
Q20
2SC5107
R78
L
( -L/ML/MH only)
R131
220
R132
180k
2.8V
Q29
2SC5107
C169
12p
R143
1k
R154
100
8
2
-
3
+
4
2.2V
C306
47p
C177
0.001
Q40
0V
2SJ144
1M
L7 15nH
C24
1p ( L )
0.5p(Other)
C25
C28
1.5p( L )
0.5p(ML/MH)
R13
220k
C27
47p
C111
0.001
P
L
L
1.5k
C112
0.001
100( )
P
10 ( )
L
C156
470p
C157
470p
C158
12p
C159
2p
0.7V
C183
0.1
1
2.4V
IC7a
NJM2904M
R193
470k
C178
47p
0V
R209
D27
MA111
C22
6p( L )
5p( ML,H )
4p( MH )
0.75p(H only)
1p(Other)
C26
7p( L )
6p( ML )
RX:2.3V
D8
HVU350
R76
L20
C109
6p( )
7p( )
R75
R129
L28
27nH
6.4v
Q28
2SC5107
R254
470k
C332
47p
100k
D7
HVU350
C21
47p
5p( MH/H )
C309
47p
22
18nH
L
L
TX:1.7V
RX:0V
100
R128
10
6.8V
R130
C146
0.7V
R11
R12
C108
7p( )
8p( -H)
10p(Other)
150k
R267
C212
LA232(Other)
C9
C8 0.001
P
P
L
L
P
( only)
C96 0.001
C344 0.001
C343 0.001
C139
8p( L )
6p( ML )
4p( MH/H )
C148
5p(L,MH)
4p(ML/H)
C149
1p(MH only)
3.5p(H only)
R177
1.9V
68k
R178
100k
0.34V
p-p
11
FI2
CP2
FO2
CP1
FI1
FO1
10
C216 22p
C217 22p
C218 22p
C219 0.001
L
7p
C7
L
L
C95 22
C337 2.2
R275
1k
R274
1k
L
CP1
C199
15.3MHz
R181
1k
FOR
REV
R4
47
C3
0.001
Q18
2SB1143
C91
4.7
R69
150
C9210C90
D34
HVU350
D20
HVU350
D33
HVU350
D22
HVU350
(*)TX:3.3V
RX:3.2V
0.001
R176
C203
0.47
C204
0.47
1.0V
7p(L/ML)
L
6p( -MH/H)
P
5p( -MH)
R68
2.2k
0.1
L22
0.56µH
C147
1p
L25
0.18µH
R120
100k
Q33
2SK880
1M
(*)TX:2.8V
RX:2.7V
C202
0.022
R180
10k
Q34
2SK536
R257
47
R67
C198
C2
4.7k
(*)TX:11.5V
RX:13.3V
Q17
2SC4081
R66
R114
10
R276
10( )
L
47( )
P
R121
47
C138
7.6V
10
C237
1
LA-382( -H only)
7
10k
AFO
DIMIN
HORNO
DET
EXPTT
LA-232(Other)
C87
47p
R64
150k
IC4b
-
+
R273
820k
D21
1T365
C293
0.001
R208
10k C236 0.1
L
W12
W11
W10
R61
18k
6
5
C88
0.022
3.3k( -ML only)
P
3.9k(Other )
2.7k( -ML only)
L
3.3k(Other )
C137
R119
Q38
DTC144EU
Q39
DTC144EU
R207
1k
R7 47
L1
C1
R1 100k
C89
0.001
R65
68k
68k
(*)TX:2.1V
RX:0V
(*)TX:2.8V
RX:2.7V
R122
0.001
R260
12k (MH only)
8.2k(Other)
R174
470
R175
10k
R179
1k
C201
0.1
MEASUREMENT CONDITIONS
DIGITAL MULTIMETER
INTERNAL RESISTANCE:50kΩ/V
IC-F420(LMR):f=460.1MHz,TX POWER=35W
IC-F410(PMR):f=455.1MHz,TX POWER=25W
VOLTAGES INDICATED WITH(*)MARK ARE
CHANGED WITH THE FREGUENCY AND POWER.