Page 1
UHF Digital/Analog Transceiver
EVX-S24
Vertex Standard LMR, Inc.
©2016 Vertex Standard LMR, Inc.
EC146U90B
Service Manual
Introduction
This manual provides the technical information necessary for servicing the
tal/Analog Transceiver.
Servicing this equipment requires expertise in handing surface-mount chip components. Attempts by non-qualifi ed persons to service this equipment may result in permanent damage not
covered by the warranty, and may be illegal in some countries.
Two PCB layout diagrams are provided for each double-sided board in this transceiver. Each side
of the board is referred to by the type of the majority of components installed on that side (“Side
A” or “Side B”). In most cases one side has only chip components (surface-mount devices), and
the other has either a mixture of both chip and leaded components (trimmers, coils, electrolytic
capacitors, ICs, etc.), or leaded components only.
EVX-S24
UHF Digi-
As described in the pages to follow, the advanced microprocessor design of the
ceiver allows a complete alignment of this transceiver to be performed without opening the case
of the radio; all adjustments can be performed from the front panel, using the “Alignment Mode”
menu.
While we believe the information in this manual to be correct, Vertex Standard assumes no liability for damage that may occur as a result of typographical or other errors that may be present.
Your cooperation in pointing out any inconsistencies in the technical information would be appreciated.
EVX-S24
Trans-
Important Note
This transceiver is assembled using Pb (lead) free solder, based on the RoHS specifi cation.
Only lead-free solder (Alloy Composition: Sn-3.0Ag-0.5Cu) should be used for repairs performed on this apparatus.
The solder stated above utilizes the alloy composition required for compliance with the lead-free specifi cation, and
any solder with the above alloy composition may be used.
Contents
Specifi cations.................................................................................................................................................................2
Exploded View & Miscellaneous Parts ....................................................................................................................... 4
Parts List .......................................................................................................................................................................5
Block Diagram ..............................................................................................................................................................6
Circuit Description .......................................................................................................................................................8
Alignment ......................................................................................................................................................................9
Main Unit (FR028210D) Circuit Diagram .............................................................................................................. 18
Display Unit (FR028310A) Circuit Diagram ..........................................................................................................20
EVX-S24 UHF Digital/Analog Transceiver Service Manual 1
Page 2
Specifi cations: USA (NA) & Except Europe (CE
General
Frequency range: 403-480 MHz
Channel / Group: 256 Channels / 16 Groups
Emission Type: 7K60F1E / 7K60FXE (Digital: 12.5 kHz Voice)
7K60F1D / 7K60FXD (Digital: 12.5 kHz Data)
7K60F1W (Digital: Combination of 12.5 kHz Voice & Data)
16K0F3E / 11K0F3E (Analog)
Power Supply Voltage: 3.7 V DC (Nominal)
Current Consumption: 1.2 A (Digital, 3 W TX)
1.9 A (Analog, 2 W TX)
Channel Separation: 12.5 kHz (Digital)
12.5 / 20 / 25 kHz (Analog) (USA Model: 12.5 kHz)
IP Rating: IP67
Operating Temperature Range: –22 °F to +140 °F (–30 °C to +60 °C)
Charging Temperature Range: +41 °F to +104 °F (+5 °C to +40 °C)
Frequency Stability: ±1.5 ppm
Antanna Impedance: 50 Ohm (unbalanced)
Dimension (W x H x D): 2.1 x 3.6 x 1.2 inches (55 x 91 x 31.5 mm)
Weight (Approx.): 7.6 oz (215g) (with Battery, Antenna, Belt Clip)
)
Receiver
Circuit Type: Direct Conversion
Sensitivity: 0.28 μV (Digital, 1 % BER)
0.25 μV (Analog, 12 dB SINAD)
Adjacent Channel Selectivity: 70 dB (25 kHz)
60 dB (12.5 kHz)
Hum and Noise: 45 dB (25 kHz)
40 dB (12.5 kHz)
Intermodulation: 70 dB
Spurious Image Rejection: 70 dB
Conducted Spurious: –57 dBm
Audio output: 500 mW @4 Ohm, <10 % THD
Transmitter
Output Power: 3 / 1 / 0.5 W (Digital)
2 / 1 / 0.5 W (Analog)
Modulation: Sigma Delta Modulation
Maximum Frequency Deviation: ±5.0 kHz (25 kHz Step, Analog)
±2.5 kHz (12.5 kHz Step, Analog)
Conducted Spurious Emissions: –36 dBm @
FM Hum & Noise: 45 dB (25 kHz)
40 dB (12.5 kHz)
Audio Distortion: <5% @1 kHz
(Measured by TIA/EIA-603
(Measured by TIA/EIA-603
)
)
<
1 GHz, –30 dBm @> 1 GHz
=
Specifi cations subject to change without notice or obligation.
EVX-S24 UHF Digital/Analog Transceiver Service Manual 2
Page 3
Specifi cations: Europe (CE
General
Frequency range: 403-480 MHz
Channel / Group: 256 Channels / 16 Groups
Emission Type: 7K60F1E / 7K60FXE (Digital: 12.5 kHz Voice)
7K60F1D / 7K60FXD (Digital: 12.5 kHz Data)
7K60F1W (Digital: Combination of 12.5 kHz Voice & Data)
16K0F3E / 11K0F3E (Analog)
Power Supply Voltage: 3.7 V DC (Nominal)
Current Consumption: 1.2 A (Digital, 3 W TX)
1.9 A (Analog, 2 W TX)
Channel Separation: 12.5 kHz (Digital)
12.5 / 20 / 25 kHz (Analog)
IP Rating: IP67
Operating Temperature Range: –30 °C to +60 °C
Charging Temperature Range: +5 °C to +40 °C
Frequency Stability: ±1.5 ppm
Antanna Impedance: 50 Ohm (unbalanced)
Dimension (W x H x D): 55 x 91 x 31.5 mm
Weight (Approx.): 215g (with Battery, Antenna, Belt Clip)
)
Receiver
Circuit Type: Direct Conversion
Sensitivity: 0.28 μV (Digital, 1 % BER)
0.4 μV (Analog, 20 dB SINAD)
Adjacent Channel Selectivity: 70 dB (25 kHz)
60 dB (12.5 kHz)
Hum and Noise: 45 dB (25 kHz)
40 dB (12.5 kHz)
Intermodulation: 65 dB
Spurious Image Rejection: 70 dB
Conducted Spurious: –57 dBm
Audio output: 500 mW @4 Ohm, <10 % THD
Transmitter
Output Power: 3 / 1 / 0.5 W (Digital)
2 / 1 / 0.5 W (Analog)
Modulation: Sigma Delta Modulation
Maximum Frequency Deviation: ±5.0 kHz (25 kHz Step, Analog)
±2.5 kHz (12.5 kHz Step, Analog)
Conducted Spurious Emissions: –36 dBm @
FM Hum & Noise: 45 dB (25 kHz)
40 dB (12.5 kHz)
Audio Distortion: <5% @1 kHz
(Measured by EN 300 086
(Measured by EN 300 086
)
)
<
1 GHz, –30 dBm @> 1 GHz
=
Specifi cations subject to change without notice or obligation.
EVX-S24 UHF Digital/Analog Transceiver Service Manual 3
Page 4
Exploded View & Miscellaneous Parts
FRONT CASE ASSY (COMPORNENT
PANEL ASSY (FRONT
–SPEAKER
–SP NET
O RING (PANEL
KEYPAD
WINDOW (C146
DOUBLE FASE ADHESIVE (WDO
MIC MEMBRANE
PAD (WINDOW
)
PAD (DISP
)
PAD (MIC
SPONGE (PANEL
WIRE ASSY (WHT 25
WIRE ASSY (BRN 35
REAR CASE ASSY (COMPORNENT
HOUSING ASSY (REAR
–BEZEL (PTT
–PADDLE (PTT
–BUTTON (PTT
–BUTTON (EMG
)
LID (USB
LIGHT GUIDE (TX/RX
SHEET (MICROTEX C012
SHEET (VENT
O RING (SCREW) (2 pcs
Y-RECESS TAPTITE-B (2X22SUS B) (x 2 pcs
Y-RECESS TAPTITE-B (2X13NI) (x 2 pcs
Y-RECESS SCREW (M2X16.5NI) (x 2 pcs
CHASSIS ASSY (COMPORNENT
CHASSIS
CONNECTOR (SMAJ-VM2
O RING (4.8X1.9
THERMALCONDUCTIVE PAD (CHG
SHEET (6X6) (2 pcs
BATTERY COVER ASSY (COMPORNENT
)
LID (C146
O RING (BATT
LATCH (BATT
SLIDE KNOB (C146
PAD (BATT) (x2 pcs
PAN HEAD TAPTITE-B (1.7X4(3
MAIN UNIT ASSY (COMPORNENT
Printed Circuit Board with Components
GASKET (JACK
GASKET (VCO
SHIELD SHEET (16X10
ELEC. COND TAPE (2.5X2.5
RING NUT
PAN HEAD SCREW (M2X3NI #3
PAN HEAD TAPTITE-B (2X5 #2) (4 pcs
DISPLAY UNIT ASSY (COMPORNENT
Printed Circuit Board with Components
LCD
MICROPHONE ELEMENT
HOLDER (LCD
LIGHT GUIDE (LCD
DOUBLE FACE ADHESIVE (LCD
INTER CONNECTOR
REFLECTOR SHEET
GASKET
GROUND PLATE (133
SPACER (MIC
(
)
TAP (LCD
PAN HEAD TAPTITE-B (1.7X4(3
PAN HEAD TAPTITE-B (2X5 #2) (3 pcs
LI-ION BATTERY PACK
FNB-V146LI (3.7V, 2300 mAh) AAM10X001
AC A
PA-57B (for USA) AAL92X002
PA-57C (for EU) AAL92X003
PA-57U (for UK) AAL92X004
PA-57F (for Argentina) AAL92X005
PA-57G (for China) AAL92X006
PA-57H (for Australia) AAL92X007
PA-57K (for Brazil) AAL92X008
Antenna VXSTD P/N
ATU-6A (400-430 MHz) AAE23X001
ATU-6B (420-450 MHz) AAE23X006
ATU-6C (440-470 MHz) AAE23X002
ATU-6D (450-485 MHz) AAE23X003
ATU-20AS (400-430 MHz) AAM23X001
ATU-20DS (440-470 MHz) AAM23X002
ATU-20FS (450-480 MHz) AAM23X003
REF.
DAPTOR
VXSTD P/N
U07230302
U9900307
U9900309
U9900311
U9900313
)
)
)
)
) (
) (
x 2 pcs
)
)
)
)
)
)
)
)
)
)
)
)
)
)
YEL Model only
(
B
ATTERY CHARGER
)
)
)
)
)
)
)
)
)
)
)
)
VXSTD P/N
)
VXSTD P/N
PAN HEAD SCREW M2X3NI #3
PAN HEAD TAPTITE-B 2X5 #2
Y-RECESS TAPTITE-B 2X22SUS B
Y-RECESS TAPTITE-B 2X13NI
Y-RECESS SCREW M2X16.5NI
)
)
YEL Model only
)
)
)
)
)
#3
)
)
)
)
)
)
#3)
)
(4 pcs
)
DESCRIPTION
)
)
)
)
)
RUBBER CAP (JACK
)
O RING (PANEL
WIRE ASSY
FR027890B
GROUND PLATE (133
RING NUT
RA157250A
RA1634500
KNOB (VOL
RA1634600
QTY.
1
7
2
2
2
SHIELD SHEET
O RING (4.8X1.9
LIGHT GUIDE (TX/RX
RA125090A
)
RA1639400 (x 2 pcs
)
RA1631000
RA1643200
)
RA1642300
GASKET (JACK
RA1632900
RA1037400
RA1632300
BUSH
)
O RING (SCREW
SHEET (VENT
Non-designated parts are available only as part of a designated assembly.
)
)
)
)
)
RA1639600
)
)
)
)
DISPLAY UNIT ASSY (BLK
CB7125000
DISPLAY UNIT ASSY (YEL
CB7129000
FRONT CASE ASSY (BLK
17000
CB71
CASE ASSY (YEL
FRONT
CB7118000
MAIN UNIT ASSY
CB7124000
SHEET (6X6
RA037690B (x 2 pcs
THERMAL CONDUCTIVE PAD (CHG
RA1640600
)
)
CHASSIS ASSY
CB7121000
)
LID (USB
RA1634200
REAR CASE ASSY (BLK
CB7119000
REAR CASE ASSY (YEL
CB7120000
)
)
)
)
SHEET (MICROTEX C012
RA0337300
)
O RING (BATT
RA1633400
BATTERY COVER ASSY (BLK
CB7122000
BATTERY COVER ASSY (YEL
CB7123000
)
)
)
EVX-S24 UHF Digital/Analog Transceiver Service Manual 4
Page 5
Parts List
REF. DESCRIPTION VALUE MFR’s DESIG VXSTD P/N
FRONT CASE ASSY
FRONT CASE ASSY
O RING
REAR CASE ASSY (BLK) CB7119000
REAR CASE ASSY (YEL) CB7120000
LIGHT GUIDE
SHEET
SHEET
O RING
Y-RECESS TAPTITE-B
Y-RECESS TAPTITE-B
Y-RECESS SCREW
BATTERY COVER ASSY
BATTERY COVER ASSY
O RING
CHASSIS ASSY CB7121000
SHEET
O RING
SHIELD SHEET RA1643200
TERMINAL CONDUCTIVE PAD
(
BLK) CB7117000
(
YEL) CB7118000
(
x2 pcs) 2X22SUS B U9900309
(
x2 pcs) 2X13NI U9900311
(
x2 pcs) M2X16.5NI U9900313
(
BLK) CB7122000
(
YEL) CB7123000
(
x2 pcs)
(
PANEL) RA1631000
(
TX/RX) RA1632300
(
MICROTEX C012) RA0337300
(
VENT) RA1639600
(
SCREW) RA1639400
(
BATTERY) RA1633400
(
CHG) RA1640600
(
6X6) RA037690B
(
4.9X1.9) RA1037400
MECHANICAL PARTS
KNOB
LID
RUBBER CAP
BUSH RA125090A
ELECTRICAL PARTS
WIRE ASSY FR027890B
MAIN UNIT ASSY CB7124000
F 1001 CHIP FUSE
F 1002 CHIP FUSE
F 1003 CHIP FUSE
J 1003 CONNECTOR ZX62D-B-5PA8(30) P1091565
J 1005 CONNECTOR 03-A70G0-36BKA P1091581
Q 1016 FET RD04LUS2-T212 G3070525
S 1001 TACT SWITCH EVQP42B3M N5090176
S 1002 TACT SWITCH EVQP42B3M N5090176
TH1001 THERMISTOR TH05 4B473FR G9090150
VR1001 POT. TP76N975N13.5FB503RY10034 J60800314
X 1001 TCXO 19.2MHz NT2520SB 19.2MHZ H9501523
GASKET
RING NUT RA157250A
PAN HEAD SCREW M2X3NI #3 U07230302
PAN HEAD TAPTITE-B (x4 pcs) 2X5 #2 U9900307
DISPLAY UNIT ASSY
DISPLAY UNIT ASSY
DS2001 LCD GTA4716SY01 G6090231
MC2001
S 2001 TACT SWITCH SKRMABE010 N5090172
S 2002 TACT SWITCH SKRMABE010 N5090172
S 2003 TACT SWITCH SKRMABE010 N5090172
GROUBD PLATE
PAN HEAD TAPTITE-B
MICROPHONE ELEMENT
3.15A, 36V FHC16 322ADTP Q0000118
2A, 36V FCC16 202ADTP Q0000147
2A, 36V FCC16 202ADTP Q0000147
(
BLK) CB7125000
(
YEL) CB7129000
PFO-T6022P-1.5 M3290060
(
x3 pcs) 2X5 #2 U9900307
(
VOL) RA1634600
(
USB) RA1643200
(
JACK) RA1634500
(
JACK) RA1632900
(
133) RA1642300
When replace a chip fuse,
use the part of the same type and value.
EVX-S24 UHF Digital/Analog Transceiver Service Manual 5
Page 6
Block Diagram
EVX-S24 UHF Digital/Analog Transceiver Service Manual 6
Page 7
Block Diagram
EVX-S24 UHF Digital/Analog Transceiver Service Manual 7
Page 8
Circuit Description
1. Receiver System
1-1. Front-end RF Amplifi er
Incoming RF signal from the antenna passes through the
low-pass filter, antenna switching diode D1011/D1014
(both
1SS390
The fi ltered RF signal is applied to the amplifi er Q1033
(
MAX2373ETC+T
cies by another band-pass fi lter.
The amplified RF signal is applied to the custom IC
Q1046 (
), and band-pass fi lter.
), then remove the undesired frequen-
RODINIA
).
1-2. Demodulator
The custom IC Q1046 (
signal by mixing the RF signal with the local signal, and
then the Base Band signal is demodulated by the another
section of the custom IC Q1046 (
The local signal is generated by the VCO which consists
of Q1036 (
D1030/D1031/D1032 (all
BFR460L3
RODINIA
) and varactor diodes D1029/
1SV279
) converts a Base Band
RODINIA
).
).
1-3. Audio Amplifi er
The demodulated signal is adjusted the audio volume
level in the custom IC Q1046 (
the audio signal is applied to the audio amplifi er Q1040
(
SA58637BS
to 500 mW (@4-ohm BTL) for internal speaker and external speaker.
). As a result, the audio signal provides up
RODINIA
). The adjusted
2. Transmitter System
2-1. MIC Amplifi er & Modulator
The speech signal from internal microphone MC2001 on
the DISPLAY Unit or external microphone J1005 on the
MAIN Unit is supplied to the custom IC Q1046 (
), which modulates the speech signal to the FM or
DINIA
digital signal.
2-2. Drive & Final Amplifi er Stages
The mo dulated s ignal fr om the cus tom IC Q1046 (
) is buffered by Q1034 (
DINIA
by driver amplifi er Q1026 (
transmit signal is then applied to Q1016 (
fi nal amplifi cation up to 3 watts output power.
The transmit signal then passes through the antenna
switch D1009/D1053 (both
tered to suppress away harmonic spurious radiation before
delivery to the antenna.
2SK3077
RD01MUS2B
RN142S
) and amplified
). The low level
RD04LUS2
) and is low-pass fi l-
RO-
RO-
) for
2-3. Automatic Transmit Power Control
The current detector Q1006-1 (
current of the fi nal amplifi er Q1016 (
driver amplifi er Q1026 (
current difference to the voltage difference.
The output from the current detector Q1006-1
(
AD8566ARM
and amplified by the power control amplifier Q1006-2
(
AD8566ARM
The output from the power control amplifier Q1006-2
(
AD8566ARM
fi er Q1026 (
(
RD04LUS2
The reference voltage changes into two values (Transmit
Power High and Low) controlled by custom IC Q1046
(
RODINIA
) is compared with the reference voltage
).
) controls the gate bias of the driver ampli-
RD01MUS2B
).
).
AD8566ARM
RD04LUS2
RD01MUS2B
) and the fi nal amplifi er Q1016
) detects the
) and the
), and converts the
3. PLL Frequency Synthesizer
The frequency synthesizer consists of VCO, TCXO
X1001, and the custom IC Q1046 (
The output frequency from TCXO X1001 is 19.2 MHz
and the tolerance is ±1.5 ppm in the temperature range
–22 °F to +140 °F (–30 °C to +60 °C).
RODINIA
3-1. VCO (Voltage Controlled Oscillator)
The VCO Q1036 (
940 MHz. The output from VCO Q1036 (
amplifi ed by buffer amplifi er Q1041 (
is supplied to the custom IC Q1046 (
The VCO frequency is divided into two by the dividing
section of the custom IC Q1046 (
become a true receiving or transmitting frequency.
In the reception, the RF signal convert a Base Band signal
by mixing with the divided VCO signal, and then supplied
to the demodulator section of the custom IC Q1046 (
), described previously.
DINIA
In the transmission, the divide VCO frequency is modulated to the FM (or digital) in the custom IC Q1046 (
), and then is supplied to the transmitter section
DINIA
described previously.
BFR460L3
) generates a between 806-
2SC5010
RODINIA
RODINIA
3-2. Varactor Control V oltage
The tuning voltage (VCV) of the VCO establishes the
lock range of VCO by controlling the cathode of varactor
diode D1029, D1030, D1031 and D1032 (all
from the custom IC Q1046 (
RODINIA
BFR460L3
).
).
) is
) and then
).
) in order to
RO-
RO-
1SV279
).
3-3. PLL
The main constitution product of the PLL is equipped all
with in the custom IC Q1046 (
cessing regarding the frequency control is performed in
the custom IC Q1046 (
RODINIA
RODINIA
).
), so that all pro-
EVX-S24 UHF Digital/Analog Transceiver Service Manual 8
Page 9
Alignment
Introduction
The
EVX-S24
specifi ed performance across the frequency range speci-
fied for each version. Realignment should therefore not
be necessary except in the event of a component failure,
or altering version type. All component replacement and
service should be performed only by an authorized Vertex
Standard representative, or the warranty policy may be
void.
The following procedures cover the sometimes critical and
tedious adjustments that are not normally required once
the transceiver has left the factory. However, if damage
occurs and some parts subsequently are replaced, realignment may be required. If a sudden problem occurs during
normal operation, it is likely due to component failure;
realignment should not be done until after the faulty component has been replaced.
We recommend that servicing be performed only by authorized Vertex Standard service technicians who are experienced with the circuitry and fully equipped for repair
and alignment. Therefore, if a fault is suspected, contact
the dealer from whom the transceiver was purchased for
instructions regarding repair. Authorized Vertex Standard
service technicians realign all circuits and make complete
performance checks to ensure compliance with factory
specifi cations after replacing any faulty components.
Those who do undertake any of the following alignments
are cautioned to proceed at their own risk. Problems
caused by unauthorized attempts at realignment are not
covered by the warranty policy. Also, Vertex Standard
reserves the right to change circuits and alignment procedures in the interest of improved performance, without
notifying owners.
Under no circumstances should any alignment be attempted unless the normal function and operation of the transceiver are clearly understood, the cause of the malfunction
has been clearly pinpointed and any faulty components
replaced, and realignment determined to be absolutely
necessary.
The following test equipment (and thorough familiarity
with its correct use) is necessary for complete realignment. Correction of problems caused by misalignment
resulting from use of improper test equipment is not
covered under the warranty policy. While most steps do
not require all of the equipment listed, the interactions of
some adjustments may require that more complex adjustments be performed afterwards. Do not attempt to perform
only a single step unless it is clearly isolated electrically
from all other steps. Have all test equipment ready before
beginning, and follow all of the steps in a section in the
order presented.
is carefully aligned at the factory for the
Required Test Equipment
Frequency Counter with 0.2 ppm accuracy at 600
MHz
Deviation Meter (linear detector)
50 Ohm RF Dummy Load with power rating 10 W at
600 MHz
UHF Sampling Coupler
In-line Wattmeter with 5 % accuracy at 600 MHz
Regulated DC Power Supply (standard 3.7 V DC, 3 A)
Vertex Standard CN-3 (P/N: A08760001) Antenna
Connector
®
IBM
Vertex Standard CE157 PC Programming Software
Vertex Standard CB000262A01 Micro USB Program-
PC/compatible Computer with Microsoft® Win-
dows® Vista, 7, 8, 8.1, or Windows 10
ming Cable.
Alignment Preparation & Precautions
A 50-Ohm RF Dummy Load and in-line wattmeter must
be connected to the main antenna jack in all procedures
that call for transmission, except where specified otherwise. Correct alignment is not possible with an antenna.
Because of the BTL (Bridged Trans Less) Amplifi er cir-
cuit used in the
the speaker leads to chassis “ground”.
After completing one step, read the following step to determine whether the same test equipment will be required.
If not, remove the test equipment (except dummy load and
wattmeter, if connected) before proceeding.
Correct alignment requires that the ambient temperature
be the same as that of the transceiver and test equipment,
and that this temperature be held constant between 68 and
86 °F (20 ~ 30 °C). When the transceiver is brought into
the shop from hot or cold air, it should be allowed time to
come to room temperature before alignment.
Whenever possible, alignments should be made with oscillator shields and circuit boards fi rmly affi xed in place.
Also, the test equipment must be thoroughly warmed up
before beginning.
Note: Signal levels in dB referred to in the alignment procedure are based on 0 dBμ EMF = 1 μV.
EVX-S24
, do not connect earth side of
EVX-S24 UHF Digital/Analog Transceiver Service Manual 9
Page 10
Alignment
Test Setup
Setup the test equipment as shown below for transceiver
alignment, then apply 3.7 V DC power to the transceiver.
The Alignment T ool Outline
Installation of the alignment tool
Install the CE157 (PC Programming Software) to your
PC and execute the CE157.
Click the “Alignment” in the “Radio” menu tab of
CE157 to open the “Alignment” window.
Alignment Mode
In the “Alignment Mode”, the aligned data written in the
radio will be able to re-align its alignment data. The value
of each parameter can be changed to desired position by
“”/“” arrow key for data up/down, “”/“” arrow key
for channel up/down, direct number input, and drag the
mouse.
Note: when all items are aligned, it is strongly recommended to align according to following order. The detail
information is written in the help document of CE156 PC
Programming Software.
1. VCO (Confi rmation Only)
2. PLL Reference Frequency
3. TX Power <High/Low3/Low2/Low1>
4. Maximum Deviation <Wide/Narrow>
Adjust the following items when needed.
Symbol Deviation
CTCSS Deviation <Wide/Narrow>
DCS Deviation <Wide/Narrow>
DTMF Deviation
MSK Deviation
Sequential Tone Deviation
Action of the switches
When the transceiver is in the “Alignment mode,“ the action of the PTT and all Programmable keys are ignored.
All of the action is controlled by the PC.
Caution
Please never turn off the power supply during
alignment. If the power supply is turned off during
alignment, the alignment data will be corrupted.
Micro USB Programming Cable
Sampling
50-ohm
Dummy Load
Inline
Wattmeter
Deviation
Meter
Frequency
Counter
Coupler
Transceiver
ANT
Power Supply
3.7 VDC
Battery Terminal
CB000262A01
Micro USB Jack
USB Port
Computer
(
CE157
)
EVX-S24 UHF Digital/Analog Transceiver Service Manual 10
Page 11
1. VCO (VCO) - This parameter is for confi rmation only and cannot align -
This parameter is to confi rm whether the VCO status shall be “Lock” or “Unlock”.
1. Click the “VCO” button to open the “VCO” window.
2. Click the “CH” button on the desired channel. The RX
VCO status (“Lock” or “Unlock”) will appear in the
“RX” box.
3. Click the “PTT” button. The radio starts to transmit on
the selected channel, and the TX VCO status (“Lock” or
“Unlock”) will appear in the “TX” box.
4. Click the “PTT” button again to stop transmitting.
5. Click the “OK” button to fi nish the confi rmation of the
VCO status.
Alignment
2. PLL REFERENCE FREQUENCY (FREQUENCY)
This parameter is to align the reference frequency for PLL.
1. Click the “Frequency” button to open the “Frequency
Alignment” window.
2. Click the “PTT” button or press the “SPACE” bar of the
computer’s keyboard, the radio will start to transmit on
the center frequency channel.
3. Set the value to get the desired frequency according to
the following ways:
Dragging the slide bar
(
Clicking the arrow
Pressing the left/right arrow key of the computer’s
keyboard
Entering the value (“0000” - “FFFF”) in the “Current
Data” box from the computer’s keyboard
4. After getting the desired frequency, click the “PTT” button or press the “SPACE” bar to stop transmitting.
5. Click the “OK” button to fi nish the frequency alignment
and save the data.
/
)
buttons
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Page 12
Alignment
3. TX POWER
This parameter is to align the “High Power,” “Low3 Power,” “Low2 Power” and “Low1 Power” for the selected channel.
1. Click the “TX Power (High Pwr / Low3 Pwr / Low2
Pwr / Low1 Pwr)” button to open the “TX Power Alignment” window.
2. Click the “PTT” button on the desired channel. The radio starts to transmit on the selected channel.
3. Set the value to get desired output power (High Pwr: 3 W,
Low3 Pwr: 2 W, Low2 Pwr: 1 W, Low1 Pwr: 0.5 W) on
the Power Meter according to the following ways:
Dragging the slide bar
(
Clicking the arrow
Pressing the left/right arrow key of the computer’s
keyboard
Entering the value (“000” - “3FF”) in the “Current
Data” box from the computer’s keyboard
4. After getting the desired output power, click the “PTT”
button or press the “SPACE” bar to stop transmitting.
5. Click the “OK” button to fi nish the TX Power alignment
and save the data.
/
)
buttons
You may select the adjusting type from the “Radio” button
(ADJ T ype) located at the bottom of the screen, as needed.
Basic: “Low-edge / band center / high-edge” and se-
lect the channel for alignment (Default).
Single: Alignment value changes only on the selected
channel.
All Freq: Alignment value changes on all channels.
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4. MAXIMUM DEVIATION <WIDE> / <NARROW>
This parameter is to align the “Maximum Deviation” (Wide/Narrow).
1. Press the “Max Dev (W/N)” button to open the “Max
Deviation Alignment” window.
2. Click the “PTT” button on the desired channel. The radio starts to transmit on the selected channel.
3. Set the value to get desired deviation (Wide: 4.2 kHz,
Narrow: 2.1 kHz) on the deviation meter according to
the following ways:
Dragging the slide bar
(
Clicking the arrow
Pressing the up-down key of the computer’s key-
board
Entering the value (“0000” - “FFFF”) in the entry
box from the computer’s keyboard
4. After getting the desired deviation, click the “PTT” button or press the “SPACE” bar to stop transmitting.
5. Click the “OK” button to finish the Max Deviation
alignment and save the data.
1) You may align the deviation level by any modulation
frequency (default: 1000 Hz) by changing the value of
the “Freq” box located at the bottom left of the screen, if
needed.
2) You may select the alignment type from the “Radio”
button (ADJ Type) located at the bottom of the screen,
as needed.
Basic: “Low-edge / band center / high-edge” and se-
lect the channel for alignment (Default).
Single: Alignment value changes only on the selected
channel.
All Freq: Alignment value changes on all channels.
/
)
buttons
Alignment
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Page 14
Perform the following alignments as needed.
SYMBOL DEVIATION
This parameter is to align the deviation of the digital mode artifi cially.
1. Press the “Symbol Dev” button to open the “Symbol
Deviation Alignment” window.
2. Click the “PTT” button on the desired channel. The radio starts to transmit on the selected channel.
3. Set the value to get Target Deviation (which is indicated
on the screen) on the deviation meter according to the
following ways:
Dragging the slide bar
(
Clicking the arrow
Pressing the up-down key of the computer’s key-
board
Entering the value (“0000” - “FFFF”) in the entry
box from the computer’s keyboard
4. After getting the desired deviation, click the “PTT” button or press the “SPACE” bar to stop transmitting.
5. Click the “OK” button to fi nish the Symbol Deviation
alignment and save the data.
/
)
buttons
Alignment
You may select the alignment type from the “Radio” button
(ADJ T ype) located at the bottom of the screen, as needed.
Basic: “Low-edge / band center / high-edge” and se-
lect the channel for alignment (Default).
Single: Alignment value changes only on the selected
channel.
All Freq: Alignment value changes on all channels.
CTCSS DEVIATION <WIDE> / <NARROW>
This parameter is to align CTCSS Deviation of the selected channel.
1. Press the “CTCSS (W/N)” button to open the “CTCSS
Deviation Alignment” window.
2. Click the “PTT” button or press the “SPACE” bar of the
computer’s keyboard to transmit the radio.
3. Set the value to get desired deviation (Nominal: Wide:
0.55 kHz, Narrow: 0.35 kHz) on the deviation meter according to the following ways:
Dragging the slide bar
(
Clicking the arrow
Pressing the left/right arrow key of the computer’s
keyboard
Entering the value (“–20.00” - “20.00”) in the “Cur-
rent Data” box from the computer’s keyboard
4. After getting the desired deviation, click the “PTT” button or press the “SPACE” bar to stop transmitting.
5. Click the “OK” button to fi nish the CTCSS Deviation
alignment and save the data.
/
)
buttons
You may align the deviation level by any CTCSS tone frequency (default: 300.0 Hz) by changing the value of the
“CTCSS Freq” box located at the bottom of the screen, if
needed.
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Page 15
DCS DEVIATION <WIDE> / <NARROW>
This parameter is to align “DCS Deviation” of the selected channel.
1. Press the “DCS (W/N)” button to open the “DCS Deviation Alignment” window.
2. Click the “PTT” button or press the “SPACE” bar of the
computer’s keyboard to transmit the radio.
3. Set the value to get desired deviation (Nominal: Wide: 0.6
kHz, Narrow: 0.4 kHz) on the deviation meter according
to the following ways:
Dragging the slide bar
(
Clicking the arrow
Pressing the left/right arrow key of the computer’s
keyboard
Entering the value (“–20.00” - “20.00”) in the “Cur-
rent Data” box from the computer’s keyboard
4. After getting the desired deviation, click the “PTT” button or press the “SPACE” bar to stop transmitting.
5. Click the “OK” button to finish the DCS Deviation
alignment and save the data.
You may align the deviation level by any DCS code (default:
532) by changing the value of the “DCS Code” box located
at the bottom of the screen, if needed.
/
)
buttons
Alignment
DTMF DEVIATION
This parameter is to align “DTMF Deviation”.
1. Press the “DTMF” button to open the “DTMF Deviation
Alignment” window.
2. Click the “PTT” button or press the “SPACE” bar of the
computer’s keyboard to transmit the radio.
3. Set the value to get desired deviation (Nominal: 3.0
kHz) on the deviation meter according to the following
ways:
Dragging the slide bar
(
Clicking the arrow
Pressing the left/right arrow key of the computer’s
keyboard
Entering the value (“–20.00” - “20.00”) in the “Cur-
rent Data” box from the computer’s keyboard
4. After getting the desired deviation, click the “PTT” button or press the “SPACE” bar to stop transmitting.
5. Click the “OK” button to finish the DTMF Deviation
alignment and save the data.
You may align the deviation level by any DTMF tone (default: “0”, available selection: “0” - “9”, “A” - “D”, “E(*)”,
and “F(#)”) by changing the value of the “DTMF Code”
box located at the bottom of the screen, if needed.
/
)
buttons
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Page 16
Alignment
MSK DEVIATION
This parameter is to align “MSK Deviation” which use for the ANI operation of the MDC1200 System.
1. Press the “MSK” button to open the “MSK Deviation
Alignment” window.
2. Click the “PTT” button or press the “SPACE” bar of the
computer’s keyboard to transmit the radio.
3. Set the value to get desired deviation (Nominal: 3.0
kHz) on the deviation meter according to the following
ways:
Dragging the slide bar
(
Clicking the arrow
Pressing the left/right arrow key of the computer’s
keyboard
Entering the value (“–20.00” - “20.00”) in the “Cur-
rent Data” box from the computer’s keyboard
4. After getting the desired deviation, click the “PTT” button or press the “SPACE” bar to stop transmitting.
5. Click the “OK” button to finish the MSK Deviation
alignment and save the data.
/
)
buttons
SEQUENTIAL T ONE DEVIATION
This parameter is to fi ne-tune of the “Sequential Tone Deviation” for the 2-Tone and 5-Tone Encoder.
1. Press the “Seq Tone” button to open the “Sequential
Tone Deviation Alignment” window.
2. Entering the desired value in the “New” box from the
computer’s keyboard.
3. Click the “OK” button to fi nish the Sequential Tone De-
viation alignment and save the data.
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Page 17
DOWNLOAD (SAVE) THE ALIGNMENT DATA AND EXIT FROM THE ALIGNMENT MODE
Press the “OK” button, then the Alignment Data will be
downloaded (saved) to the transceiver and Exit from the
Alignment Mode.
Alignment
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Page 18
Main Unit (FR028210D
)
Circuit Diagram (RF Section
)
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Page 19
Main Unit (FR028210D
)
Circuit Diagram (CONTROL Section
)
EVX-S24 UHF Digital/Analog Transceiver Service Manual 19
Page 20
Display Unit (FR028310A
Circuit Diagram
)
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Page 21
No portion of this manual may be reproduced without the permission of Vertex Standard LMR, Inc.
Vertex Standard is a trademark of Vertex Standard LMR, Inc.
All other trademarks are the property of their respective owners.
©2016 Vertex Standard LMR, Inc.
All rights reserved.
EVX-S24 UHF Digital/Analog Transceiver Service Manual 18
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