|
|
PDF VX-180V Data sheet ( Hoja de datos )
| Número de pieza | VX-180V | |
| Descripción | (VX-160V / -180V) VHF FM Transceiver | |
| Fabricantes | VERTEX STANDARD | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de VX-180V (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
VHF FM Transceiver
VX-160V/-180V
Service Manual
©2005 VERTEX STANDARD CO., LTD. EC013N90B
VERTEX STANDARD CO., LTD.
4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan
VERTEX STANDARD
US Headquarters
10900 Walker Street, Cypress, CA 90630, U.S.A.
YAESU EUROPE B.V.
P.O. Box 75525, 1118 ZN Schiphol, The Netherlands
YAESU UK LTD.
Unit 12, Sun Valley Business Park, Winnall Close
Winchester, Hampshire, SO23 0LB, U.K.
VERTEX STANDARD HK LTD.
Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road,
Kwun Tong, Kowloon, Hong Kong
VX-160V
http://www.DataSheet4U.net/
VX-180V
Introduction
This manual provides technical information necessary for servicing the VX-160V and VX-180V FM Trans-
ceiver.
Servicing this equipment requires expertise in handling surface-mount chip components. Attempts by non-
qualified 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 circuit board in the transceiver. Each side of
is referred to by the type of the majority of components installed on that side (“leaded” or “chip-only”). In
most cases one side has only chip components, and the other has either a mixture of both chip and leaded
components (trimmers, coils, electrolytic capacitors, ICs, etc.), or leaded components only.
While we believe the technical 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.
Contents
Operating Manual Reprint ............................ 2
Cloning .............................................................. 6
Specifications ................................................... 7
Exploded View & Miscellaneous Parts ...... 8
Block Diagram ................................................. 9
Circuit Description ................................11
Alignment .................................................13
Board Unit (Schematics, Layouts & Parts)
MAIN Unit ................................................................ 17
1
datasheet pdf - http://www.DataSheet4U.net/
1 page  
Operating Manual Reprint
Description of Operating Functions
Call/Reset
When the 2-tone selective calling unit is installed, press
the assigned Soft key to silence the receiver and reset for
another call, when a communication is finished.
Speed Dial
Your Dealer may have pre-programmed Auto-Dial tele-
phone number memories into your radio.
To dial a number, just press the Dealer-assigned Soft key
for Speed Dialing. The DTMF tones sent during the dial-
ing sequence will be heard in the speaker.
TX Save Off
Press the assigned Soft key to disable the Transmit Bat-
tery Saver, if you are operating in a location where high
power is almost always needed.
The Transmit Battery Saver helps extend battery life by
reducing transmit power when a very strong signal from
an apparently nearby station is being received. Under some
circumstances, though, your hand-held radio may not be
heard well at the other end of the communication path,
and high power may be necessary at all times.
Accessories & Options
FNB-64 7.2 V 700 mAh Ni-Cd Battery
FNB-V57 7.2 V 1100 mAh Ni-Cd Battery
FBA-25A Alkaline Battery Case
NC-77B 120 VAC Overnight Desktop Charger
NC-77C 230-240 VAC Overnight Desktop Charger
VAC-800 Desktop Rapid Charger
VAC-6800 6-unit Multi Charger
MH-45B4B Speaker/Microphone
MH-37A4B Earpiece Microphone
VC-25
VOX Headset
VCM-1
Mobile Mounting Bracket (for VAC-800)http://www.DataSheet4U.net/
LCC-160/S Leather Case (for VX-160)
LCC-180/S Leather Case (for VX-180)
CT-42
PC Programming Cable
CT-27
Radio to Radio Programming Cable
CE44
Programming Software
5
datasheet pdf - http://www.DataSheet4U.net/
5 Page 
Circuit Description
Receive Signal Path
Squelch Control
Incoming RF from the antenna jack is delivered to the
RF Unit and passes through a low-pass filter consisting of
coils L1001, L1002, and L1031, capacitors C1004, C1005,
C1008, C1010, C1014, C1016, and C1221, and antenna
switching diode D1003 (RLS135 TE-17).
The squelch circuitry consists of a noise amplifier and
band-pass filter within Q1037, and noise detector D1018
(HVC358B).
When no carrier is received, noise at the output of the
detector stage in Q1037 is amplified and band-pass fil-
Signals within the frequency range of the transceiver
enter a varactor-tuned band-pass filter consisting of coils
L1010 and L1011, capacitors C1044, C1046, C1060,
C1065, and C1068, and diodes D1011, D1012, D1013,
and D1014 (all HVC358B), then are amplified by Q1012
(2SC5006-T1) and enter a varactor-tuned band-pass fil-
ter consisting of coils L1017 and L1021, capacitors C1084,
C1086, C1095, and C1097, and diodes D1018, D1019
(both HVC358B), before mixing by first mixer Q1026
(SGM2016AM-T7).
Buffered output from the VCO is amplified by Q1007
(2SC5005-T1) to provide a pure first local signal between
tered by the noise amplifier section of Q1037 and the net-
work between pins 7 and 8, and then is rectified by D1028.
The resulting DC squelch control voltage is passed to
pin 37 of the microprocessor Q1014 (M37516E6HP:Lot.
1~4, M37516M6:Lot. 5~). If no carrier is received, this
signal causes pin 24 of Q1014 to go high and pin 20 to go
high. Pin 24 signals Q1060 (RT1P441U-T11-1) to dis-
able the supply voltage to the audio amplifier Q1039, while
pin 20 holds the green (Busy) half of the LED off, when
pin 24 is high and pin 20 is high.
Thus, the microprocessor blocks output from the au-
dio amplifier, and silences the receiver, while no signal is
190.25 and 218.25 MHz for injection to the first mixer.
The 44.25 MHz first mixer product then passes through
monolithic crystal filter XF1002 (typ A, C:HDF0042, 5.5
kHz BW or typ CS1:HDF0051) to strip away unwanted
mixer products, and the IF signal is then amplified by
Q1033 (2SC4215Y TE85R).
being received (and during transmission, as well).
When a carrier appears at the discriminator, noise is re-
moved from the output, causing pin 37 of Q1014 to go low
and the microprocessor to activate the “Busy” LED via Q1014.
The microprocessor then checks for CTCSS or CDCSS
code squelch information, if enabled. If not transmitting
The amplified first IF signal is applied to FM IF sub-
and CTCSS or CDCSS is not activated, or if the received
system IC Q1037 (TA31136FN-EL), which contains the
tone or code matches that programmed, audio is allowed
second mixer, second local oscillator, limiter amplifier,
to pass through the audio amplifier Q1039 (NJM2070M
noise amplifier, and RSSI amplifier.
TE2) to the loudspeaker by the enabling of the supply
http://www.DataSheet4U.net/
The second local signal is produced from the PLL ref-
voltage to it via Q1037.
erence/second local oscillator of 14.60 MHz crystal X1001.
The 14.60 MHz reference signal is tripled by Q1036, ca-
Transmit Signal Path
pacitor C1209, and coil L1029, and the resulting 43.8 MHz
Speech input from the microphone is amplified by
second local signal is then delivered to the mixer section
Q1017 (NJM2902V TE1); after pre-emphasis by C1066
of Q1037, which produces the 450 kHz second IF when
mixed with the first IF signal.
The second IF then passes through ceramic filter
CF1001 (ALFYM450G=K on “Narrow” channels) or
CF1002 (ALFYM450F=K on “Wide” channels) to strip
away all but the desired signal, and then is applied to the
and R1054, the audio is amplified in another section of Q1017.
The processed audio may then be mixed with a CTCSS
tone generated by Q1014 (M37516E6HP:Lot. 1~4,
M37516M6:Lot. 5~) for frequency modulation of the PLL
carrier (up to ±5 kHz from the unmodulated carrier) at the
transmitting frequency.
limiter amplifier in Q1037, which removes amplitude
variations in the 450 kHz IF, before detection of the speech
by the ceramic discriminator, CD1001 (CDBC450CX24).
Detected audio from Q1037 is applied to the audio high-
pass filter, and then passes via the volume control to the
audio amplifier Q1039 (NJM2070M-TE2), which pro-
If a CDCSS code is enabled for transmission, the code is
generated by microprocessor Q1014 (M37516E6HP:Lot.
1~4, M37516M6:Lot. 5~) and delivered to D1004
(HVC350B TRF) for CDCSS modulating.
The modulated signal from the VCO Q1002
(2SC5231C8-TL) is buffered by Q1007 (2SC5005-T1).
vides up to 1/2 Watt to the optional headphone jack or a 4-
ohm loudspeaker.
The low-level transmit signal then passes through the T/R
switching diode D1016 (DAN235E-TL) to driver ampli-
fiers Q1015 (2SC5227-4-TB) and Q1016
(2SK2596BXTL), then the amplified transmit signal is
applied to the final amplifier Q1024 (2SK2974-T11),
which delivers up to 5 watts of output power.
The transmit signal then passes through the antenna
switch D1003 (RLS135 TE-11) and is low-pass filtered,
to suppress harmonic spurious radiation, before delivery
to the antenna.
11
datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet VX-180V.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| VX-180V | (VX-160V / -180V) VHF FM Transceiver | VERTEX STANDARD |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |