Vertex Standard VX-5500U User Manual

UHF FM Transceiver
VX-5500U
Service Manual
©2003 VERTEX STANDARD CO., LTD. EC034U90A
POWER
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

Introduction

This manual provides technical information necessary for servicing the VX-5500U UHF FM Transceiver.
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......................... 1-1
Cloning ....................................................................
2-1
Specifications ................................................ 2-2
Exploded View & Miscellaneous Parts ... 3-1
Block Diagram .............................................. 3-2
Interconnection Diagram............................ 3-4
Circuit Description ..................................... 4-1
Alignment ...................................................... 5-1
Board Unit (
MAIN Unit........................................................... 6A-1
DISPLAY Unit ...................................................... 6B-1
KEY Unit ............................................................... 6C-1
VR Unit................................................................. 6D-1
MIC CONN Unit................................................. 6D-2
Optional Board Unit (
F2D-8 2-Tone Decode Unit ................................ 7A-1
VTP-50 VX-Trunk Unit ....................................... 7B-1
FVP-25 Encryption / DTMF Pager Unit ........... 7C-1
F5D-14 5-Tone Unit ............................................ 7D-1
FIF-7A Connection Unit ..................................... 7E-1
Schematics, Layouts & Parts
Schematics, Layouts & Parts
)
)
1

Front Panel

Operating Manual Reprint

CONTROLS & CONNECTORS


POWER
POWER Button
Press the button to turn the transceiver ON and
OFF.
TX Indicator
This lamp glows red when the radio is transmit-
ting.
BUSY Indicator
This lamp glows green when the channel is busy.
Liquid Crystal Display
The display include an 8-character alpha-numeric
section showing channel and group names, sta-
tus and identity information, and error messages.
Additional indicators on the display show prior-
ity channel assignments and scan include / ex-
clude selection.
This channel on “S
ELECTABLE TONE” List
This channel on “PUBLIC ADDRESS” or “SPEAKER” List
This channel on “H
ORN ALERT” List
This channel on “O
PTION
List
This channel on “I
Receiver Monitor
NTERCOM” List
This channel on
“S
Channel Group

CAN” List
Number
/ Button
Pressing these buttons changes the current group (and displayed group number or name). Holding this button for more than 1/2 second causes the function to repeat.
SQC Indicator
This lamp glows orange when incorrect position at the setting of CE49.
Programmable Function Button (PF button)
This button can be set up for special applications, such as high/low power selection, monitor, dim­mer, talk-around, and call alert function, as de­termined by your network requirements and pro­grammed by your VERTEX STANDARD dealer.
VOLUME Knob
This knob sets the volume of the receiver.
EMERGENCY Microphone
The emergency microphone is located behind this small slit. When the emergency feature is acti­vated, this Microphone is enabled.
CHANNEL Selector Knob
This knob select the operating channel.
Programmable Function Button (PF button)
This button can be set up for special applications, such as high/low power selection, monitor, dim­mer, talk-around, and call alert function, as de­termined by your network requirements and pro­grammed by your VERTEX STANDARD dealer.
8 Character Alpha-numeric Display
This channel on “AUX A/B/C” List
1-1
Operating Manual Reprint
CONTROLS & CONNECTORS

Side Panel

Microphone Jack (It is on both sides.) Connect the microphone plug to this jack.
Microphone Jack

REAR (Heatsink)

Antenna Socket
The 50-ohm coaxial feedline to the antenna must be connected here, using a type-M (PL-259) plug.
External Speaker Jack
An external loudspeaker may be connected to this 2-contact, 3.5-mm mini-phone jack.
Caution: Do not connect this line to ground, and be
certain that the speaker has adequate capa­bility to handle the audio output from the VX-5500.
13.8-V DC Power Connector
The supplied DC power cable must be connected to this 4-pin connector. Use only the supplied fused cable, extended if necessary, for power con­nection.
DSUB 25-Pin Accessory Connector
External TX audio line input, PTT (Push To Talk), Squelch, and external RX audio line output sig­nal may be obtained from this connector for use with accessories such as data transmission/recep­tion modems, ets.
1-2
Operating Manual Reprint

BASIC OPERATION OF THE TRANSCEIVER

Important! - Before turning on the radio the first time, confirm that the power connections have been made cor­rectly and that a proper antenna is connected to the an­tenna jack.
Switching Power ON/OFF
Push the POWER switch turn on the radio. The
display will become illuminated. The radio will
start up on the last channel used prior to shut-
down during the previous operating session.
Turn the CHANNEL selector knob to choose the
desired operating channel. A channel name will
appear on the display. If you want to select the
operating channel from a different Memory Chan-
nel Group, press the UP () or DOWN () but-
ton to select the Memory Channel Group you
want before selecting the operating channel.
Setting the Volume
Turn the VOLUME knob clockwise to increase the
volume, and counterclockwise to decrease it. If
no signal is present, press and hold in the MON
button more than 1/2 seconds; background noise
will now be heard, and you may use this to set
the VOLUME knob for the desired audio level.
Press and hold the MON button more than 1/2 sec-
onds to quiet the noise and resume normal (quiet)
monitoring.
Transmitting
To transmit, wait until the “BUSY” indicator is off (the channel is not in use), and press the PTT (Push-To-Talk) switch on the side of the micro­phone (the “TX” indicator will appear or the “TX” indicator will glow red). While holding in the PTT switch, speak across the face of the microphone in a clear, normal voice level, and then release the PTT switch to receive.
Selecting Groups and Channels
H Press the UP () or DOWN () button (repeat-
edly, if necessary) to select a different group of channels.
H Turn the CHANNEL selector knob to select a
different channel within the current group.
Automatic Time-Out Timer
If the selected channel has been programmed for automatic time-out, you must limit the length of each transmission. While transmitting, a beep will sound five seconds before time-out. Another beep will sound just before the deadline; the “TX” in­dicator will disappear and transmission will cease soon thereafter. To resume transmitting, you must release the PTT and wait for the “penalty timer” to expire (if you press the PTT before this timer expires, the timer restarts, and you will have to wait another “penalty” period.)
1-3
Operating Manual Reprint

ADVANCED OPERATION

Programmable Function Button (PF button)
The VX-5500 includes the seven Programmable Function Buttons (PF button). The PF button
functions can be customized, via programming by your VERTEX STANDARD dealer, to meet your communications/network requirements. Some features may require the purchase and in­stallation of optional internal accessories. The possible PF button programming features are il-
POWER
Functions
None
SCAN (SCN)
Dual Watch
Call/Reset
Talk-Around (TA)
Alpha Numeric (A/N)
DIMMER (DIM)
Emergency (EMG)
Horn Alert (HA)
Home Channel (HOM)
Intercom (IC)
Low Power (LOW)
GRP UP
GRP DWN
CH UP
CH DWN
AUX A
AUX B
AUX C
Public Address (PA)
Monitor (MON)
RCL
Selectable Tone (ST)
SP*
Squelch Level (SQL)
Compander
Encryption** (OPT)
* requires RMK-4000 ** requires Encryption Unit
<1.5 sec
>1.5 sec
Programmable Function Button (PF button)
<1.5 sec
>1.5 sec
<1.5 sec
lustrated at the below, and their functions are ex­plained on next page. For further details, contact your VERTEX STAN­DARD dealer. For future reference, check the box next to each function that has been assigned to the PF button on your particular radio, and keep it handy.
>1.5 sec
<1.5 sec
>1.5 sec
<1.5 sec
>1.5 sec
<1.5 sec
>1.5 sec
<1.5 sec
>1.5 sec
1-4
Operating Manual Reprint
ADVANCED OPERATION
Channel Scan
The Scanning feature is used to monitor multiple
signals programmed into the transceiver. While
scanning, the transceiver will check each channel
for the presence of a signal, and will stop on a
channel if a signal is present.
To activate scanning:
H Press the assigned PF button of the “Scan” mo-
mentarily to activate scanning.
H The scanner will search the channels, looking
for active ones; it will pause each time it finds a channel on which someone is speaking.
To stop scanning
H Press the assigned PF button of the “Scan”.
H Operation will revert to the channel to which
the CHANNEL selector knob is set.
Note:Your dealer may have programmed your
radio to stay on one of the following chan­nels if you press the PTT switch during scan­ning pause:
Current channel (“Talk Back”)
Ì
“Last Busy” channel
Ì
“Priority” channel
Ì
“Home” channel
Ì
Scan Start” channel
Ì
Dual Watch
The Dual Watch feature is similar to the Scan fea-
ture, except that only two channels are monitored:
Ì The current operating channel; and Ì The “Priority” channel.
To activate Dual Watch:
H Press the assigned PF button of the “Dual
Watch”.
H The scanner will search the two channels; it
will pause each time it finds a channel on which someone is speaking.
H Press the assigned PF button of the “Dual
Watch”.
H Operation will revert to the channel to which
the CHANNEL selector knob is set.
ARTS (Auto Range Transpond System)
This system is designed to inform you when you and another ARTS-equipped station are within communication range. During ARTS operation, your radio automatically transmits for about 1 second every 25 (or 55) sec­onds (the interval is programmed by Dealer) in an attempt to Shake hands with the other station. If you move out of range for more than one min­utes, your radio senses that no signal has been received, a ringing beeper will sound. If you sub­sequently move back into range, as soon as the other station transmits, your beeper will sound.
The PF Button Function
The PF (Programmable Function) button can be programmed by the dealer to provide two of the other functions described below. To activate the primary Accessory function, press the PF button momentarily. To access the second­ary Accessory function (which may include the Alarm), press and hold the PF button for 1.5 sec­onds or longer.
Call/Reset
When this feature is programmed and a selective call has been received, momentarily press the as­signed PF button of the “Call/Reset” to reset the flashing indicator and mute the receiver, other­wise press the assigned PF button of the “Call/ Reset” to sent your radio’s identification code (ANI) to the dispatcher.
Talk-Around
The feature causes the assigned PF button of the “Talk-Around” to select simplex operation on semi-duplex channels: the transmit frequency becomes the same as the receive frequency (re­gardless of any programmed offset for the chan­nel).
Note:This feature has no effect on simplex channels. After pressing the button, -TAKARD-” is displayed on the LCD.
Alpha Numeric
Press the assigned PF button of the “Alpha Nu­meric” to switch the display between the Group/
Channel number, and the Group/Channel name (alphanumeric). A tone will sound each time you switch between numerical and alphanumerical display.
1-5
Operating Manual Reprint
ADVANCED OPERATION
DIM
Press the assigned PF button of the “DIM” to ad­just the brightness of the display and key backright.
EMG (Emergency)
Press the assigned PF button of the “EMG” to initiate an emergency call (requires ANI board). When an emergency call is made, not tone is emit­ted and the display does not change. To end the emergency call, turn the transceiver power OFF.
HA (Horn Alert)
Press the assigned PF button of the “HA” to turn the Horn Alert function ON or OFF. If you receive a call from the base station with 2Tone or DTMF signaling, horn alert will activate. When you turn Horn Alert ON, a tone will sound and “
” appears on the display.
Home (Home Channel)
Press the assigned PF button of the “Home” to select the pre-programmed Home Channel. Press it again to return to the previous channel. If used while scanning, pressing this key a second time will change to the revert channel.
IC (Intercom)
This feature requires dual head configuration. Press the assigned PF button of the “IC” to turn the intercom feature ON or OFF. While ON, you can press the PTT switch to communicate to an­other control head operator without transmitting over the air. When you press this key, a tone sounds and “ tercom can be used even while scanning and re­ceiving a call.
” appears on the display. The in-
Low Power
Press the assigned PF button of the “Low Power” to set the radio's transmitter to the “Low Power” mode. Press this key again to return to “High Power” operation when in difficult terrain.
GRP UP/DWN
Press the assigned PF button of the “GRP UP” or “GRP DWN” to select a different group of chan­nels.
CH UP/DWN
Press the assigned PF button of the “CH UP” or “CH DWN” to select a different channel within the current group.
AUX A/B/C
Press the assigned PF button of the “AUX A”, “AUX B”, or “AUX C” to turn the output port (re­spectively).
PA (Public Address)
Press the assigned PF button of the “PA” to use the transceiver as a PA amplifier. When you en­able this function, a tone sounds and “ pears on the display. The public address can be used even while scanning and receiving a call.
MONI (Monitor)
Press the assigned PF button of the “MONI” mo­mentarily to cancel CTCSS and DCS signaling squelch; the “MON” icon appears on the display. Press and hold this key for 1/2 seconds to hear background noise (unmute the audio); the MON icon blinks on the display.
RCL (Channel Recall)
During scan, you can press the assigned PF but­ton of the “RCL” to select the last called channel.
ST (Selectable Tone)
Press the assigned PF button of the “Selectable Tone”, then rotate the CHANNEL selector knob
to select a 2-Tone.
SP
Press the assigned PF button of the “SP” to switch “Front panel”, “Front panel & Body” and “Body” speaker. When “Body” is selected, a tone sounds and the “ can use this function while scanning and receiv­ing a call. However, all audio will be emitted from the PA speaker.
” icon appears on the display. You
SQL (Squelch Level)
You can manually adjust the squelch level using this function:
1. Press the assigned PF button of the “SQL”. A
tone sounds and SQL appears on the display with the current squelch level.
2. Rotate the CHANNEL selector knob to select
the desired level.
3. Press the this key. A tone sounds and the dis­play returns to the normal channel.
” ap-
1-6
ADVANCED OPERATION
COMP (Compander)
Press the PF button assigned to the “COMP” function to turn the “Compander” IC ON or OFF. This IC contains two variable gain circuits con­figured for compressing and expanding the dy­namic range of the radio's transmitted audio sig­nal. When you enable this function, the signal-to-noise radio can be improved by reducing the transmit­ted audio dynamic range.
Encryption (Option)
When the Voice Scrambler feature is enabled, pressing the assigned PF button of the “Encryp- tion” toggles the Scrambler on and off.
1-7
Operating Manual Reprint

OPTIONAL ACCESSORIES

MH-25 MH-53 MH-53 MH-53 CE49 Programming Software CT-70 Radio Programming Cable (Requires VPL-1) CT-71 Radio to PC Programming Cable CT-72 Radio to Radio Programming Cable CT-93 Cable for RMK-4000 (33 ft,10 m) CT-81 Cable for RMK-4000 (20 ft, 6 m) CT-82 Cable for RMK-4000 (8 ft, 2.5 m) CT-83 Cable for RMK-4000 (2 ft, 0.6 m) CNT-6000 Control Head RF DECK RF Deck w/MMB-75 (for Dual Band Installations) RMK-4000SH Remote Kit (for Single Transceiver) RMK-4000DH Remote Kit (for Dual-Head Installations) RMK-4000DB Remote Kit (for Dual Band Installations) RMK-4000DBH Remote Kit (for Dual Band plus Dual Head Installations) F2D-8 2-Tone Decode Unit (Requires FIF-7A) F5D-14 5-Tone ENC-DEC Unit (Requires FIF-7A) VTP-50 VX-Trunk Unit (Requires FIF-7A) FVP-25 Band inversion scrambler/DTMF paging Unit (Requires FIF-7A) FVP-35 Encryption Unit (Rolling code voice scrambler; Requires FIF-7A) MDC1200 Digital ANI encoder Unit (Requires FIF-7A) FP-1023 External 23A Power Supply MLS-100 Mobile Loud speaker (12 W Peak Power) MMB-75 Mobile Mounting Bracket MMB-76 Locking Mobile Mounting Bracket FIF-7A Inter face Board (for F2D-8, F5D-14, VTP-50, FVP-25) CN-6 Inter face Board (for Accessories) LF-1 Line Filter
B7A
C7A
A7A
B7A
Microphone Heavy Duty Microphone Heavy Duty Microphone w/Noise Canceler Heavy Duty DTMF Microphone w/Noise Canceler
1-8

DSUB 25-PIN ACCESSORY CONNECTOR

Pin 1: RSSI [Analog Output]
A DC voltage proportional to the strength of the signal currently being received (Receiver Signal Strength Indicator) is provided on this pin. This low impedance output is generated by the receiver IF sub-system and buffered by an internal op­amp. Typical voltages are graphed as follows:
Operating Manual Reprint
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
DSUB25 output level (V)
0
1259 398 125 398 12.5 4 1.25 0.4 0.125 0.04
SSG Input Level (uV)
Pin 2, 3, 4, 5 & 6: SELECT, DSUB 03, DSUB 04, DSUB
05 & DSUB 06
[Digital Input Port]
These input port features can be programmed via the CE49 programmer. The same item can not be chosen twice. To select the “Input port” page, (Common « DSUB-25 « Input port).
Pin 2
Pin 4
Pin 6
Pin 3
Pin 5
DSUB 25-Pin Numbering
None MON This feature is the same as pressing and
holding in the Monitor key.
DIMMERLCD illumination dimmer “on.” Hook Activates the Hook1 feature. SCAN Activates the scanner. G-SCAN Activates the Group scanner. RPT INH Disables the repeater feature during
Multi Deck operation.
EMG Activates the Emergency feature. Home Switches to the Home Channel. CH SW0 Memory channel recall
(Channel Switch Table bit 0)
CH SW1 Memory channel recall
(Channel Switch Table bit 1)
CH SW2 Memory channel recall
(Channel Switch Table bit 2)
CH SW3 Memory channel recall
(Channel Switch Table bit 3)
Example
If you assign “CH SW0” and “CH SW1” to the Universal Input Port, you can recall Channels 1~3 as shown below.
Channel CH SW0 CH SW1
11 0 20 1 31 1
LOGIC level (+5V / 0V) input (Low active). High Impedance input.
1-9
Operating Manual Reprint
DSUB 25-PIN ACCESSORY CONNECTOR
Similarly, if you assign “CH SW0,” “CH SW1,” and “CH SW2” to the Universal Input Port, you can recall Channels 1~7 as shown below:
Channel CH SW0 CH SW1 CH SW2
11 0 0 20 1 0 31 1 0 40 0 1 51 0 1 60 1 1 71 1 1
If you need to recall all memory channels (15 CH) from the External Controller via the Uni-versal Input Port, you should assign the “All Channel Recall” Command (CH SW 0 ~ CH SW 3) to the Universal Input Port. In this case:
Channel CH SW0 CH SW1 CH SW2 CH SW3
11 0 0 0 20 1 0 0 31 1 0 0 40 0 1 0 51 0 1 0 60 1 1 0 71 1 1 0 80 0 0 1
91 0 0 1 10 0 1 0 1 11 1 1 0 1 12 0 0 1 1 13 1 0 1 1 14 0 1 1 1 15 1 1 1 1
The Memory Channel is determined via the CE49 Programmer. (Common « DSUB-25pin connec­tor « Channel switch Table).
DSUB 25-Pin
PI NS 2, 3 , 4, 6
Sample Circuit
Pin 7: E
[GND]
Ground for all logic levels and power supply re­turn.
Pin 8: A KEY OUT [Universal Output Port]
Open collector output. Output voltage 0 ~ 5 V, Max. sink current 30 mA. The possible programming features (use CE49) are illustrated below.
A PORT/B PORT/C PORT/D PORT/E PORT/ None
Refer to the “Pins 20, 21, & 22” section for details.
Pin 9: TXD
[Digital Output for Alignment software]
Connect to the RS232C cable (requires FIF-8 and CT-88)
Pin 10: RXD
[Digital Input for Alignment software]
Connect to the RS232C cable (requires FIF-8 and CT-88)
Pin 11: EXT PTT
Shorting this port to ground causes the transceiver to be placed in the Transmit mode, while open­ing the connection to this port returns the trans­ceiver to the Receive mode.
1-10
Pin 12: MIC MUTE
MIC mute on: Level High (5V) MIC mute off: Open LOGIC level (+5V / 0V) output. When the PTT/EXT PTT switch is pressed, this pin switches to “open.”
Operating Manual Reprint
DSUB 25-PIN ACCESSORY CONNECTOR
Pin 13: TXDI [Digital Input for DATA Communications]
H TX Hi-speed Data Input Type (jumper JP2005).
Input level 800 mV/600 Ohms, Max.input 1.2V
H Tx Low-speed Data input Type (Jumper
JP2006). Input level 40 mV/600-Ohms
If the Jumper setting is “Low-speed Data” (JP2006 jumpered), this port is usable in the AUDIO (300~3000 Hz) range. If the jumper setting is “HI-speed Data” (JP2005 jumpered), this port is usable for 9600 bps DATA communications, because the filter and limiter are not engaged in the Audio line.
Pin 14: DC OUT
[13.4 V/5 V DC Output]
H Switched 13.8V output for supplying power to
an accessory (jumper JP2008).
H Switched and regulated DC 5.0V output for
supplying power to an accessory (jumper JP2007). Maximum output current is 200 mA
Pin 15: IGN
[Ignition Sense feature]
The VX-5500 may automatically be switched to the STAND-BY mode when the vehicle's igni-tion key is turned on. Maximum current is 20 mA. This feature is only enabled on transceivers con­figured for Dual Deck operation.
Pin 17: RX DO [Digital Output for DATA Communications]
H RX Hi-speed Data Output Type (jumper
JP2003). output level 600 mV/10k Ohms
H RX Low-speed Data Output Type (jumper
JP2004). output level 200 mV/600 Ohms
If the Jumper setting is “Low-speed Data” (JP2004 jumpered), this port is usable in the AUDIO (300~3000 Hz) range. If the jumper setting is “HI-speed Data” (JP2003 jumpered), this port is usable for 9600 bps DATA communications, because the filter and limiter are not engaged in the Audio line.
Pin 18: E
[GND]
Ground for all logic levels and power supply re­turn.
Pins 19, 20, 21, & 22: DSUB 19, DSUB 20, DSUB 21
and DSUB 22
[Universal Output Port]
LOGIC level (+5V / 0V) output. The logic output appears at these pins when the front panel's PF key is turned on. The possible programming features (use CE49) are illustrated below. If the HA feature is assigned to these ports, a cur­rent amplifier must be connected between the Horn circuit and the port.
Pin 16: NC
Ignition 13.8V
[NO connection]
DSUB 25-Pin
None/A PORT/B PORT/C PORT/D PORT/E PORT/HA PORT
Pin 23: EXT SQL
[Squelch Signal Output]
Open collector output. Max. sink current 10 mA. A Signal is present (Squelch is open): Level High No Signal is present (Squelch is closed): Open When you connect the solder jumper on JP2002, this port changes to PULL UP (5 V) output. This status can be changed by CE49 programmer.
Pin 24: SP MUTE
[Speaker Mute Output]
Open collector output. External Speaker mute on: Level High External Speaker mute off: Open
Pin 25: E
[GND]
Chassis ground.
1-11
Operating Manual Reprint
Note:
1-12

Cloning

The VX-5500 includes a convenient “Clone” feature, which allows the programming data from one trans­ceiver to be transferred to another VX-5500. Here is the procedure for Cloning one radio's data to anoth­er.
Note: When a cloning isn't made, you correct the fol­lowing part using "CE49." When a "Radio to Radio Clone" which is in the "Miscellaneous" menu is "Disabled," change this menu to "Enabled."
1. Turn both transceivers off.
2. Remove the plastic cap and its two mounting
screws from the Microphone jack on the trans­ceiver. Do this for both transceivers.
3. Connect the optional CT-72 cloning cable be­tween the Microphone jacks of the two trans­ceivers.
4. On the Destination transceiver, press and hold the PF Button (just below the POWER Button) while turning the transceiver on.
5. Now, on the source transceiver, press and hold
the
Button while turning the transceiver
on.Data will now be transferred to the Destina­tion transceiver from the source transceiver.
6. If there is a problem during the cloning process, sound an error beep from source the transceiver. Check your cable connections and battery volt­age, and try again.
7. If cloning is a successful, turn the Destination transceiver off. Now turn the source transceiver off.
8. Disconnect the CT-72. Replace the plastic cap and its two mounting screws.
9. You can then turn the transceivers back on, and begin normal operation.
Optional Cloning Cable
CT-72
POWERPOWER
Destination source
DealerProgramming of VTP-50 and F5D-14
These procedures are designed to be used by the installing technician after the VTP-50 and F5D-14 has been installed in the transceiver. To program a VX-5500's VTP-50 and F5D-14 board, you will need the CT-71 programming interface cable, the CE-26 Programming diskette, and an IBM PC/AT or PS/2­compatible type computer.
To enter the Programming mode, use the follow­ing procedure:
1. Turn the transceiver off.
2. Turn on the transceiver while holding in the
PF Button (just below the
Button).
POWER
2-1

Specifications

GENERAL

Number of Channels: 250 channels
Frequency Range: 450 - 490 MHz
Channel Spacing: 5 / 10 / 12.5 / 15/ 20 / 25 / 50 kHz
Power Supply Voltage: 13.8V DC ±15 %
Current Consumption: Standby: 500 mA
Receive: 2.5 A
Transmit: 15 A (High)
Ambient Temperature Range: –22°F to +140°F (–30°C to +60°C)
Frequency Stability: Better than ±2.5 ppm
RF Input-Output Impedance: 50 Ohms
Audio Output Impedance: 4 Ohms
Dimensions: 7" (w) x 2.4" (H)x 7.7" (D) (178 x 60 x 195 mm)
Weight (Approx.): 4.9 lbs. (2.2 kg)
RECEIVER (Measurements made per EIA standard TIA/EIA-603)
Circuit Type: Double-conversion Super-heterodyne
Sensitivity(EIA 12 dB SINAD): 0.25 µV
Adjacent Channel Selectivity: 85/75 dB
Intermodulation: 80/75 dB
Spurious and Image Rejection: 90 dB
Audio Output: 12 W @ 4 Ohms w/5 % THD
TRANSMITTER (Measurements made per EIA standard TIA/EIA-603)
Power Output: 45 (Low:25 W)
Modulation: 16K0F3E, 11K0F3E
Max Deviation: 5.0/2.5 kHz
Conducted Spurious Emissions: 70 dB Below Carrier
FM Hum & Noise: 50/45 dB
Audio Distortion (@ 1 kHz): < 5 %
Measurements per EIA standards unless noted above.
Specifications subject to change without notice or obligation.
2-2
Screw List
REF. VXSTD P/N Description Qty.
1 U20306007 BINDING HEAD SCREW M3x6B 4
2 U20306002 BINDING HEAD SCREW M3x6NI 6
3 U24308002 TAPTITE SCREW M3x8NI 9
4 U23206001 TAPTITE SCREW M2.6x6 14
5 U20308002 BINDING HEAD SCREW M3x8NI 2
6 U24208001 TAPTITE SCREW M2.6x8 1
7 U20305007 BINDING HEAD SCREW M3x5B 2
8 U32450007 FLAT HEAD SCREW M2.6x5B 2
9 U31306007 OVAL HEAD SCREW M3x6B 2
10 S5000182 SCREW JFS-4S-B1MW 2
Accessories
Description VXSTD P/N Qty.
BLADE FUSE ATC 15A Q0000075 2
DC CABLE 02P 15AX2 T9021015 1
KNOB CAP RA0254100 5
NAME PLATE RA0254700 1
RA0253000 LCD HOLDER
VR Unit
VR3601*
RA0254000 RUBBER KNOB (PWR)
RA0254200 RUBBER PACKING
RA0251900 PANEL ASSY
Supplide is VR3601*
DISPLAY Unit
RA0252800 DIFFUSER SHEET
G6090140 LCD
RA0262600 HOLDER
MAIN Unit
RA0262400 PACKING SHEET
MIC CONN Unit
RA0252700 REFLECTOR SHEET
KEY Unit
R0145680 FITTING (x4 pcs)
M4090133 SPEAKER
P1090654 CONNECTOR (W/ *A)
MIC CONN Unit
RA0254800
RA0252300 LIGHT GUIDE
RA0252900 RUBBER CONNECTOR
CONTACT ASSY (Both Side)

Exploded View & Miscellaneous Parts

RA0254900 CASE
RA0262700 PACKING SHEET
Q6000114 TERMINAL STRIP
*A
RA0215000 EXT CAP
RA0251500 CHASSIS
RA020830A DOUBLE FACE (Both Side)
RA0215400 SHEET
S6000395 COVER P-25P(23)
T9206926 WIRE ASSY
RA0262300 HOLDER PLATE
RA0262500 PACKING SHEET
S6000396 RUBBER GROMMET TM-96-17
P1090984 CONNECTOR
RA02543A0 KNOB
RA0254300 KNOB
R6054387B SPECIAL NUT
RA0253900 RUBBER KNOB (CH)
RA0275500 RUBBER KNOB ASSY
Non-designated parts are available only as part of a designated assembly.
3-1

Block Diagram

3-2
Block Diagram
3-3

Interconnection Diagram

3-4

Circuit Description

Reception and transmission are switched by "RX" and "TX" lines from the microprocessor unit (MPU). The receiver uses double-conversion super-hetero­dyne circuitry, with a 43.95MHz 1st IF and 450 kHz 2nd IF. The 1st LO, produced by a PLL synthesizer, yields the 43.95MHz 1st IF.
The 2nd LO uses a 43.5 MHz (43.95 MHz-450 kHz) signal generated by a crystal oscillator. The 2nd mix­er and other circuits use a custom IC to convert and amplify the 2nd IF, and detect FM to obtain demod­ulated signals. During transmit, the PLL synthesiz­er oscillates at the desired frequency directly, for amplification to obtain RF power output. During transmit, voice modulation and CTCSS (or DCS) modulation are applied to this synthesizer. Trans­ceiver functions, such as Tx/Rx control, PLL synthe­sizer settings, and channel programming, are con­trolled using the MPU.

Receiver

Incoming RF signals from the antenna connector are delivered to the MAIN Unit, and pass through a low-pass filter (LPF) antenna switching network consisting of coils L1008, L1004, L1022 and L1003, capacitors C1338, C1337, C1336, C1335, and C1325, and antenna switching diodes D1047, D1048 and D1049 for delivery to the receiver front end.
Signals within the frequency range of the trans­ceiver are then passed through a varactor-tuned band-pass filter consisting of L1007, L1020 before RF amplification by Q1018 (2SC3357).
The amplified RF is then band-pass filtered again by varactor-tuned resonators L1009, L1011 to ensure pure in-band input to 1st mixer Q1188, Q1189, Q1190, Q1191 (2SK520 x 4).
Buffered output from the VCO Unit is amplified by Q1032 (2SC5107), Q1192 (2SC3357) and low­pass filtered by L1041 / L1045/ L1060 and C1153 / C1154 / C1343 / C1174 / C1089, to provide a pure 1st local signal between 406.05 and 446.05 MHz to the 1st mixer.
The 43.95MHz 1st mixer product then passes through dual monolithic crystal filters XF1001 and XF1002 (12 kHz BW)/ XF1003 and XF1004 (7kHz BW) and is amplified by Q1041 (2SC4215Y) and deliv­ered to the input of the FM IF subsystem IC Q1034 (TA31136FN).
This IC contains the 2nd mixer, 2nd local oscilla­tor, limiter amplifier, FM detector, noise amplifier, and squelch gates.
The 2nd LO in the IF-IC is produced from crystal OSC X1001 (14.500MHz), and the 1st IF is converted to 450kHz by the 2nd mixer and stripped of unwant­ed components by ceramic filter CF1001 or CF1002. After passing through a limiter amplifier, the signal is demodulated by the FM detector.
Demodulated receive audio from the IF-IC is amplified by Q2019 (CXA1846N). After volume ad­justment by the AF power amplifier Q2018 (TDA7240AV), the audio signal is passed to the op­tional headphone jack or 4 W loudspeaker.

PLL synthesizer

The 1st LO maintains stability from the PLL syn­thesizer by using a 14.500 MHz reference signal from crystal OSC X1001. PLL synthesizer IC Q1033 (SA7025DK) consists of a prescaler, reference counter, swallow counter, programmable counter, a serial data input port to set these counters based on the external data, a phase comparator, and charge pump. The PLL-IC divides the 14.500 MHz refer­ence signal by 725 using the reference counter (20.0 kHz comparison frequency). The phase detector comparison frequency to be eight times the channel spacing (2.5kHz). The VCO output is divided by the prescaler, swallow counter and programmable counter. These two signals are compared by the phase comparator and input to the charge pump. A voltage proportional to their phase difference is de­livered to the low-pass filter circuit, then fed back to the VCO as a voltage with phase error, controlling and stabilizing the oscillating frequency. This syn­thesizer also operates as a modulator during trans­mit.
The RX-VCO is comprised of Q1019 (2SK508) and D1011, D1018 (1SV282 x 2), and oscillates between
406.050 MHz and 446.050 MHz according to the pro­grammed receiving frequency. And the TX-VCO is comprised of Q1020 (2SC4226-R24) and D1014, D1015, D1020 (1SV284 x 3) and oscillates between
134.000MHz and 174.000MHz according to the pro­grammed transmit frequency. The VCO output pass­es through buffer amplifier Q1026 (2SC5107), and a portion is fed to the buffer amplifier Q1029 (2SC5107) of the PLL IC, and at the same time am­plified by Q1032 (2SC5107) to obtain stable output. The VCO DC supply is regulated by Q1006 (2SC4154E). Synthesizer output is fed to the 1st mixer by diode switch D1021 (1SS321) during re­ceive, and to drive amplifier Q1031 (2SC3356) / Q1025 (2SC3357) for transmit.
4-1
Circuit Description

Transmitter

Voice audio from the microphone is delivered via
the MIC (Jack) Unit to the MAIN Unit, after passing through amplifier Q3039/Q2041 (NJM2902V), pre­emphasis, limiter (IDC instantaneous deviation con­trol), and LPF Q2001 (NJM2902V), is adjusted for optimum deviation level and delivered to the next stage.
Voice input from the microphone and CTCSS are FM-modulated to the VCO of the synthesizer, while DCS audio is modulated by the reference frequency oscillator of the synthesizer.
Synthesizer output, after passing through diode switch D1025 (1SS321), is amplified by driver Q1031 (2SC3356) / Q1025 (2SC3357) and power module Q1017 (RA45H4552M) to obtain full RF output. The RF energy then passes through antenna switch D1047 / D1048 and a low-pass filter circuit and fi­nally to the antenna connector.
RF output power from the final amplifier is sam­pled by CM coupler and is rectified by D1037, D1038 (HSM88AS x 2). The resulting DC is fed through Automatic Power Controller Q1007 (NJM2902V) to transmitter RF amplifier and thus the power out­put.
Generation of spurious products by the transmit­ter is minimized by the fundamental carrier frequen­cy being equal to the final transmitting frequency, modulated directly in the transmit VCO. Addition­al harmonic suppression is provided by a low-pass filter consisting of L1008 L1004, L1002, L1001 and C1338, C1336, C1337, C1335, C1334, C1333 and C1332, resulting in more than 60 dB of harmonic sup­pression prior to delivery to the RF energy to the antenna.

DCS Demodulator

DCS signals are demodulated on the MAIN-
UNIT, and are applied to low-pass filter Q2040 (NJM2902V), as well as the limiter comparator Q2003.

CTCSS encoder/decoder

The CTCSS code is generation and encoding by
MPU IC Q2025 (MB90F583B).
Demodulation and detection of the CTCSS tones
are carried out by IC Q2017 (MX165C).
MPU
Operation is controlled by 16-bit MPU IC Q2025
(MB90F583B). The system clock uses a 16.000 MHz crystal for a time base. IC Q2035 (RN5VL35AA) re­sets the MPU when the power is on, and monitors the voltage of the regulated 5V power supply line.

EEPROM

The EEPROM retains TX and RX data for all mem­ory channels and CTCSS data, DCS data, prescaler dividing, and REF oscillator data (internal/external).
4-2

Alignment

The VX-5500 has been carefully aligned at the factory for the specified performance across the fre­quency range specified for each version.
Realignment should therefore not be necessary except in the event of a component failure, or when altering the transceiver version. 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. All component replacement and service should be performed only by an authorized VERTEX STANDARD representative, or the warran­ty policy may be voided. 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 specifications 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 must reserve 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 the need for realignment determined to be absolutely necessary.

Required Test Equipment

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.
Ì RF signal generator: calibrated output level at
1000 MHz
Ì Deviation Meter (linear detector) Ì AF Millivoltmeter Ì SINAD Meter Ì Inline Wattmeter with 5% accuracy at 1000 MHz Ì Regulated DC Power Supply: adjustable from 10
to 17 VDC, 15A
Ì 50-ohm non-reactive Dummy Load: 100 W at 1000
MHz
Ì Frequency Counter: <0.1 ppm accuracy at 1000
MHz
Ì AF Signal Generator Ì DC Voltmeter: high impedance Ì RF Sampling Coupler (attenuation pad) Ì AF Dummy Load: 4 ohms, 20W Ì Oscilloscope Ì Spectrum Analyzer Ì IBM PC-compatible computer w/VERTEX
STADARD CT-71 programming cable and CE49 channel programming editor.

Alignment Preparation & Precautions

A dummy load and inline 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. 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 some time for thermal equalization with the environment before alignment. If possible, alignments should be made with oscilla­tor shields and circuit boards firmly affixed in place. Also, the test equipment must be thoroughly warmed up before beginning.
5-1
Alignment
Before beginning, connect the transceiver and PC using the CT-71 programming cable, and download the EEPROM data from the transceiver to the com­puter.
Store this data in a disk file so that it can be saved and retrieved later. Using the table below, program the channel, CTCSS, and DCS alignment settings for your transceiver version. Upload this file to the transceiver.
Note:Signal levels in dB referred to in this proce-
dure are based on 0 dBµ = 0.5 µV (closed cir­cuit).
Caution:Do not connect the audio output line to
ground, and be certain that the speaker has adequate capability to handle the audio output from the radio. Because of the bridge audio amplifier cir­cuit used in the radio, it is necessary to con­struct and use a simple audio load test adapter as shown in the schematic diagram below, when conducting receiver align­ment steps.
3.5 PLUG
2-ohm 10W
2-ohm 10W
(4-ohm Dummy Load)
AF Test Adapter Schematic
470uF
Attenuate d Tes t Ou tp ut( 1/ 2)
GND

Alignment Channel Frequencies

Channel
CH1 450.01 MHz
CH2 470.01 MHz None None Wide
CH3 489.99 MHz
CH4 450.01 MHz
CH5 470.01 MHz None None Narrow
CH6 489.99 MHz
CH7 470.01 MHz 151.4 Hz None Wide
CH8 470.01 MHz None 023 Wide
CH9 470.01 MHz 151.4 Hz None Narrow
CH10 470.01 MHz None 023 Narrow
Frequency CTCSS DCS
(simplex) Encode Encode
Narrow/Wide

PLL & Transmitter

Set up the test equipment as shown for transmit-
ter alignment.
Maintain the supply voltage at 13.8 V DC for all
steps.
RF Signal Generator
Inline Wattmeter
Deviation Meter
Frequency
Counter
RF Sampling
Coupler
CT-71 connection Cable
PC
COM port
Transceiver
Power Supply
13.8V DC

PLL VCV

Ì Connect the positive lead of the DC voltmeter to
test point TP1008 (VCV) on the Main Unit, as in­dicated in the figure, and connect the negative lead to chassis ground.
Ì Set the transceiver to the high band edge fre-
quency channel (CH3 or CH6), then key the trans­mitter, and adjust L1026 on the Main Unit for 4.35 V ±0.05 V on the voltmeter.
Ì Adjust L1023 on the Main Unit for 4.3 V ±0.1 V
on the voltmeter.
Ì Next select to the low edge frequency channel
(CH1 or CH4) and confirm the VCV is more than
1.0 V on the voltmeter.
Ì Key the transmitter, and confirm the VCV is more
than 0.8 V on the voltmeter.

PLL Reference Frequency

With the wattmeter, dummy load and frequency counter connected to the antenna jack, and select band center frequency channel (CH2 or CH5), key the transmitter and adjust VR1001 on the Main Unit, if necessary, so the counter frequency is within 100 Hz of the channel center frequency for the trans­ceiver version.
5-2
Alignment

Transmitter Output Power

The following transmitter parameters can be ad­justed from the computer by utilizing the Alignment Software. Refer to the onboard help of the Align­ment Software Manual for details.
Ì Select the band center frequency channel (CH2
or CH5), and select the “high” power output level.
Key the transmitter and adjust “TX PWR Hi“ for a
power output of 45 Watts (± 1.0 W) as indicated
on the wattmeter. Ì Stay on the band center frequency channel (CH2
or CH5), and select the “low” power output level.
Key the transmitter and adjust “TX PWR L3“ for
a power level of 25 Watts (± 0.5 W) as indicated
on the wattmeter.

Transmitter Deviation

The following modulation parameters can be ad­justed from the computer by utilizing the Alignment Software. Refer to the onboard help of the Align­ment Software Manual for details.
Microphone Audio Modulation Level
Ì Select the band center frequency channel (CH2),
and select the “low” power output level. Ì Adjust the AF generator for 50mV (–30dBm) out-
put at 1 kHz, as applied to the microphone jack. Ì Key the transmitter and adjust “MAX Dev (wide)“
for maximum deviation of 4.3 kHz ± 0.1 kHz as
indicated on the deviation meter. Ì Select the band center frequency channel (CH5),
and select the “low” power output level. Ì Adjustdjust the AF generator for 50mV (–30dBm)
output at 1 kHz, as applied to the microphone
jack.
TP1008L1023L1026 VR1001
5-3
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