FMUser 500W User manual

www.fmuser.org
www.fmuser.org
Fmuser.org 500W and 1KW
Analog TV Transmitter
User’s Manual

www.fmuser.org
www.fmuser.org
Overview:
This product is the all solid-state Single-channel TV Transmitter, it adopts
professional TV exciter, and it can use the single/duel exciter configuration,
switching automatically.
This transmitter has a variety of linear and non-linear pre-correction function,
carrier frequency offset, and precision bias (with external precision reference
source) function.
It can prefabricate and control the half-power output, and it has remote control
telemetry interface.
The power amplifier used LDMOS FET, the analog and digital are both
compatible, and it used high-quality switch parallel power.
The power amplifier and power supply are both used hot-plug devices.
The power loss and standing wave of the one-time synthesis power combiner is
small.
The module of power amplifier display the working parameters in real-time.
The whole machine has the protection of over-current, over temperature, over
power and over-standing wave ratio.
The master touch screen displays the working parameters of the whole machine
and the module of power amplifier (PA) in real-time.
The 1KW transmitter is installed in one 19inch chassis; it’s suitable for medium
or small TV station.
Features:
●The whole machine is single-channel, image with audio together.
●The redundant configuration design can reduce the rate of inactive to zero.
The exciter redundancy design: the main exciter and its spare exciter can switch
automatically (the spare exciter is optional). When the main exciter broke down,
it can switch to the spare exciter uninterrupted.
The power amplifier redundancy design: multiple amplifiers integrated; the
modules of PA are high-consistency. These two exciters are the spare one with
each other and can exchange easily.

www.fmuser.org
www.fmuser.org
The power supply redundancy design: parallel current sharing power from
multiple switching power supply; the computer can monitor power supply’s
working condition and adjust its working condition automatically.
●The management and monitoring are intelligent and on network, it has the
external PC interface.
●It has the technical data detection, monitoring systems and full-featured
computer control software with auto-diagnostic function. All technical
parameters can be read through the LCD display panel.
●Comprehensive protection measures can reduce the damage of equipments.
This machine has protection about no video; VSWR is too large, overheating,
over-stimulus, missing phase protection and lightning protection. The switch has
protection about overvoltage, over current, under voltage, over temperature,
short circuit and lightning protection.
●All power supplies are switching power supplies; high efficiency, excellent
regulator range, strong adaptable from the change of the external voltage.
●It adopts modular design concept.
●Hot-pluggable design: power amplifier and switching power are supporting
the Hot-plug, it’s easy to debug and maintenance; improve the reliability.
●The fan is built-in the chassis, the transmitter has a compact structure and a
beautiful shape.
Technical Specifications:
Overall performances:
1. Working frequency：UHF 13~48 Channel arbitrary choice
2. Output power：500W/1KW
3. Output impedance：50Ω
4. VSWR of output load impedance：≤1.12
5. Inter-modulation distortion：≤-50dB
6. Useless transmission：In adjacent channel≤-40dB
Out adjacent channel≤-60dB
7. RF output interface：Φ40
8. Power supply：Three-phase 380V Power Consumption
2.5KW
9. Shape size：1070mm×667mm×955mm
10.Weight：150KG
Image performance：
1. Video frequency input level：1VP-P positive polarity
2. Video frequency input impedance：75Ω
3. DG：±5%
4. DP：±5°

www.fmuser.org
www.fmuser.org
5. Luminance nonlinear：≤10%
6. Group delay：≤±60ns
7. Signal-to-clutter ration of low frequency period interference: ≥50dB
Sound performance:
1. Audio input level：0dBm±6dB
2. Audio input impedance：10KΩ (imbalance)
600Ω (Balance)
3. Maximum frequency deviation：±50KHz
4. Harmonic distortion：≤1%
5. The amplitude frequency characteristics: ±1dB
6. Signal-to -clutter：≥60dB

www.fmuser.org
www.fmuser.org
Please notice this：
1. Read safety notice first。
2. A 50 Ohm dummy load or antenna and cable must be
connected before turning power on, Avoid water going into
the connecters or the cable.
3. Exciter’s operating frequency must be set to the same
frequency of the transmitter.
4. Please read System Control Logic section to understand
how the system works.
5. Setting all parameters before turning on amplifier’s
power (Please read the Power On Sequence section).

www.fmuser.org
www.fmuser.org
Contents
Safety Notice-----------------------------------------------------------------4
Special Reminds-------------------------------------------------------------4
1. Power on Sequence ------------------------------------------------------5
2. Control System Introduction ------------------------------------------7
3. Operation Instructions -------------------------------------------------10

www.fmuser.org
www.fmuser.org
Safety Notice
1.1 Please read the following safety points, in order to avoid accidents and prevent
connectors to be broken.
1.2 Only the qualified maintenance workers can operate the device.
1.3
．．．
P
．
revent
．．．．．．
from
．．．．fire and body injury ．．．．．．．．．．．．．．．．．
a. Use proper power cord. Other wise, it may cause the fire;
b. Connect the machine to ground through a wire with resistance less than 4
Ohm to prevent from electrical shock.
c. Use the proper fuse.
d. Keep good ventilation.
1.4 Please don’t disassemble and repair by yourself when it’s broken down.
．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．
Please
send to the professional service department to solve the problems.
1.5 Please don’t install the machine in the moisture place;

www.fmuser.org
www.fmuser.org
Please notice this:
1.The 50Ωdummy load or antenna and cable must be rightly
connected, carefully keep away water into connecters and cable.
2.The design of the transmitter is an integral structure. It gathers the
whole display operation on the LCD display screen, completely
realized the software, the operation is very simple and rapidly. Please
ensure you have read through the following statement about the
software’s use illustration before you turn on the equipment.
Safety Notice
1. Please read the following safety points, in order to avoid the
accidents and prevent the connecting machines to be broken.
2. Only the qualified maintenance workers can operate the service.
3. P
．
revent the fire and the
．．．．．．．．．．．．．．．．．．．
bodily injury
．．．．．．．．．．．．
e. Use the proper wire. If not, it will cause the fire and the bodily
injury;
f. Ensure the machine connect the ground. Please confirm whether
the machine has connected the ground, through the wire and the
lead, to prevent the electric shock.
g. Use the proper fuse. Please use the stipulated type and rating
fuse.
h. Provide good ventilation. This machine adopts the natural

www.fmuser.org
www.fmuser.org
convective radiation. Fix it correctly to keep it radiating well.
4. Please don’t disassemble and repair by yourself when it’s broken
．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．
down.
．．．．．
Please send to the professional service department to solve
the problems.
CAUTION：Please don’t assemble the machine in the moist
environment;
Please don’t assemble the machine in the easy
exploding environment;
Please don’t repair by yourself.
5. If you have any other questions, please connect with us.

www.fmuser.org
www.fmuser.org
Overview
This series TV transmitter is an excellent product that owns
the highest and newest technology. The whole machine adopts
the latest TV signal processing technology.
.

www.fmuser.org
www.fmuser.org
Display
This series TV transmitter displays the operation parameters of
the modulator on large LCD screen in real time Its particular
FOUR_KEY design, you can conveniently and fast modify,
view the operation parameter and the statement of the
transmitter in any time.

www.fmuser.org
www.fmuser.org
Technical Specifications
. Technical Specifications
1.Power Supply □ AC220V±10% 50Hz
□ AC110V±20% 50Hz
□ FULL RANGE
2.Heat Abstraction Forced Convection
3.Output Power：Adjustable Continuous to rate power
4.Output Impedance 50Ω
5.RF Output Linker Standard N-50Ω or 7/16
physical property
1.Temperature Range 5℃～+40℃
2.Relative Humidity ＜95%
3.Height Above Sea Level ＜4500m

www.fmuser.org
www.fmuser.org
Panel Function Description
I、Front panel picture
1 —Amplifer；
2—MODULATER
3 —SWITCH POWER SUPPLY；
4—POWER SWITCH
1
2
3
4

www.fmuser.org
www.fmuser.org
2、REAR panel function description
1 — AC Socket for amplifer Fuse 5A
2 — RF input Port
3— RF Output Port
4 — AV Input
5 — AC Socket for modulator
1
2
3
4
5
6
8

www.fmuser.org
www.fmuser.org
6 — DC controling line
7—AC Connector 220V
8—DC Connector red=”+” black= “-”
2 、PA Front panel function description
1 —POWER: power supply OK；
2—MODULATER: Modulater POWER supply OK
3—VOLTAGE: PAVOLTAGE over alarm;
4—CURRENT: PA Current over alarm;
5—V.S.W.R VSWR is 1.30light, 1.50 transmitter restart。
After restart three times，if the alarm condition do not unchain,
The transmitter will wait for checking.

www.fmuser.org
www.fmuser.org
6—RF : RF power over alarm.
7 —LCD display Screen
8 —key-press
UP and LEFT light cursor
9 —key-press
ENTER
10 —key-press
DOWN and RIGHT light cursor
11—Power Switch

www.fmuser.org
www.fmuser.org
Special Tips
lTurn on RF power after setting all other parameters
lCAN address of exciters and amplifier modules are set in factory, please do
not change it.
lThe transmitter is AGC controlled when CAN AGE in exciter is ENABLED.
lWhen REMOTE of CCU is enabled, all parameters of CCU can only be
changed remotely.
lRF SWITCH of CCU is a general switch.
lTo use period control on CCU, set period first, and then enable PERIOD
CONTROL and finally set RF SWITCH on.
lAlways disable exciter’s period control function.

www.fmuser.org
www.fmuser.org
1 Power On Sequence
1.1 Check all connections
lCombiner to dummy load or antenna
lAmplifier modules to combiner
lDivider to amplifier modules
lSwitcher to divider
lExciters to switcher
lMain exciter to backup exciter
lAudio to main exciter and backup exciter
lCommunication cables
lCCU LOCKOUT to Exciter LOCKIN
lPower cable
1.2 Turn on System Control Power
Check running status in STATUS display page. Make sure all modules are in
normal status.
1.3 Set Exciter Parameters (Produced by this company)
Main and backup exciter parameters setting must be identical!!!
lFrequency: must set to the same frequency as the transmitter allowed.
lModulation deviation: 75KHz
lPilot deviation: 7.5KHz
lAudio Input: depends on audio source.
lAudio Gain: adjust audio level according to its input level. Adjusted audio
level should be around 0dBm.
lPower Percentage: 0%
lPeriod Control: disabled
lRemote Control
“Remote = enabled” for power automatic control.
“Remote = disabled” for power manual control.
lRF Switch: ON
lIf other manufacturer’s exciter is used, refer to operation manual they
provided.

www.fmuser.org
www.fmuser.org
1.4 Set CCU parameters
lTurn off RF Switch: RF Switch = OFF
lPower Percentage: 0%--100%
lPeriod Control
If period control is needed, set three periods first and then enable Period
Control (Period Control =Enabled).
If period control is not needed, just disable Period Control (Period Control =
Disabled).
1.5
Turn on the PowerAmplifier
lTurn on the Power Supply of the Amplifier PA
lTurn on the RF Switch: RF Switch = ON
1.6 Adjust RF power
lFor automatic control, just set power in CCU.
lFor manual control, increase exciter’s power slowly; meanwhile watch RF
power and other information displayed on CCU’s LCD.

www.fmuser.org
www.fmuser.org
2 System Control Introduction
2.1 Main Control Function
lData collection and display from 6 amplifiers which include voltage, current,
temperature, running status, forward power and reflect power.
lCombiner data acquisition and display which include temperature, forward power
and reflect power.
lData collection and display from 2 exciters which include frequency, exciter
working status, forward power and reflect power.
lAmplifier modules and exciters on line detection.
lRF power control and power supply control.
2.2 System Internal Network
Internal network is built through CAN bus. CCU, amplifier modules and exciters are
connected on the CAN bus on which the CCU read information from amplifier
module’s and exciter’s and control the exciter’s power to make the machine’s
Automatic Power Control work.
Each unit on the CAN bus have a unique CAN address and the setting rules are as
below:
Exciter A：1
Exciter B：2
Power Amplifier Unit A：3 (DIP switch)
Power Amplifier Unit B：4 (DIP switch)
Power Amplifier Unit C：5 (DIP switch)
……
If there is no corresponding unit or use the other manufacturer’s exciter, the
corresponding CAN address is reserved.
If the exciter breaks off from the CAN bus, the machine’s Automatic Power Control
can not work.
If an amplifier module breaks off from CAN bus, the central control unit will regard
forward power and reflected power of the amplifier as zero. Consequently, CCU