PCS Electronics TVMAX 8000U+ Manuel utilisateur

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TVMAX 8000U+/V+ VHF/UHF TV TRANSMITTER – MANUAL

CYBERMAXTV+ 10W VHF & 7W UHF TV TRANSMITTER – MANUAL

Manual

I M P O R T A N T N O T E

Upon receiving your order inspect the packaging material and unit for apparent damage.

Any damage should be reported immediately so we can make a claim with the shipping

company. Take photos, if you can, they can be used as proof.

IMPORTANT! If you want to connect an amplifier to this exciter, please first make sure that

output power is set correctly and does not exceed maximum allowable input power of the

amplifier. See appendix for additional tips on driving amplifiers.

If you are buying an exciter module always bolt the board into a metal enclosure and use a

suitable fan to always cool it.

Study local regulations and ensure you are operating in compliance!

Never ever operate any exciter/transmitter or amplifier without a properly tuned

load/antenna!

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Table of Contents

Introducing CyberMaxTV+ and TVMAX8000+ modules............ 3

What makes this TV transmitter so great? ...................................... 3

What is the DSP Stereo Encoder for USA/NTSC?.......................... 3

Antenna options .............................................................................. 3

How is TVMAX8000V+ better than TVMAX 6000V+....................... 3

Quick Technical specifications ........................................................ 4

Thank you for purchasing CyberMaxTV+ / TVMAX8000+ .............. 4

TVMAX8000+ and LCD boards layouts ..................................... 5

RF board layout .............................................................................. 5

LCD module layout – 3 keys model................................................. 7

LCD module layout – rotary encoder model.................................... 8

Before you start ........................................................................ 11

Antenna......................................................................................... 11

SWR – antenna matching ............................................................. 12

BNC connector.............................................................................. 12

Mains power supply and mains power cable................................. 12

Audio source with mixer, microphone etc...................................... 12

Enclosure and cooling for MAX PRO 8000+ series exciters ......... 12

How to wire everything together and use TVMAX8000+......... 14

Wiring things up and first power-up............................................... 14

Using the TVMAX8000+ or CyberMaxTV+ ................................... 14

Troubleshooting ............................................................................ 15

Using the TVMAX 8000+ series exciter ................................... 16

LCD control module – two types ................................................... 16

<RF POWER> .............................................................................. 16

Changing frequency...................................................................... 17

<VIEW SELECT>.......................................................................... 17

<SHOW TEST PIC>...................................................................... 17

<TV STANDARD>......................................................................... 17

<SOUND CARRIER>.................................................................... 18

<LCD CONTRAST>...................................................................... 18

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<PIC TO SOUND>........................................................................ 18

<WHITE CLIP> ............................................................................. 18

<PLL STEP> ................................................................................. 18

<FIRMWARE VER> ...................................................................... 19

<BAND SELECT>......................................................................... 20

<RF POWER ALC>....................................................................... 20

Appendix A – Frequency tables ............................................... 21

Frequency tables (HAM RADIO).............................................. 23

Appendix B – IO board and PC remote control ....................... 24

Software installation...................................................................... 24

Configuring communications port.................................................. 25

Installing USB driver (only for USB IO board) ............................... 26

Configuring USB driver ................................................................. 26

Appendix C – Warranty and legal info ..................................... 28

Important notice! ........................................................................... 28

Warranty and servicing! ................................................................ 28

Legal info ...................................................................................... 28

Limitation of liability....................................................................... 28

Also available from www.pcs-electronics.com .............................. 29

Revisions and errata ................................................................ 30

Index......................................................................................... 31

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Introducing CyberMaxTV+ and TVMAX8000+ modules

Finally affordable VHF/UHF TV transmitters

hird generation of our analog TV transmitters is finally out, bringing all the bells and whistles that our FM

broadcasting line had for a long time. This is your ticket into the world of TV. Build your own TV studio and

broadcast your own TV program! Transmit movies from your PC to your living room, re-transmit the TV

program you've never been able to receive in your valley, run a college TV station, cover rural areas of Africa with

TV signal from satellite TV stations, run a hotel cable system info pages or just have fun; this unit will keep you busy during

the cold winter evenings and is sure to provide lots of fun for many months to come!

What makes this TV transmitter so great?

TVMAX8000V+ supports all existing analog TV standards and all existing analog TV sound standards. It includes a simple

built-in test signal generator. Unit is available either as a populated and tested board or a 1H rack-mounted ready-to-use

transmitter with built in mains power supply, which is then called CyberMaxTV+. Boxed unit runs from mains, the module

requires 24-48V DC. An optional stereo encoder board is also available and provides stereo sound. Up to 7W of output

power offers from several hundred meters up to about 5km of range depending on antenna type used on both transmitting

and receiving side. High gain Yagi antennas on both sides might offer even more range in favorable conditions. The unit

was designed for 24/7/365 operation. Each unit has a wide-angle high contrast backlit LCD display. Output power and TV

channel can be adjusted via LCD display.

What is the DSP Stereo Encoder for USA/NTSC?

This add-on card enables stereo sound, it was designed for NTSC system, used in USA and most of South/North America.

Check our website for prices and availability.

Antenna options

We have provided suitable antennas and coaxial cable with connectors, check our website for more info. Yagi antennas are

perfect for 2-way transmission from one point to the other.

How is TVMAX8000V+ better than TVMAX 6000V+

- More output power due to new linear output stage

- Maxlink audio input connector

- Can be setup with the on-board DIP switches (LCD not necessary)

- Better image quality, especially in VHF model

- Frequency is now freely adjustable, PLL step is 125KHz for VHF and 250KHz for UHF, HAM radio ATV band is fully

covered

- Support for external Power/Swr meter via DIGIAMP connector, perfect for building larger 100W/500W/1000W TV

transmitters

- Works directly off 28-50V so you can power the amplifier and the exciter from the same power supply!

- Full remote control via PC possible via USB, COM port or even Ethernet!

Chapter

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Quick Technical specifications

- Supports PAL/SECAM/NTSC (all analog world standards) Note SECAM is not available in DIP switch mode

- Supports all sound standards (4.5-6.5MHz, adjustable)

- Output power VHF model: 10W (typically about 7-12W for VHF band III and 5-15W for band I and II), adjustable from

0 to max via LCD menu system when using LCD display

- Output power UHF model: 7W (typically about 8W around 470MHz decreasing to under 1W at 850MHz), adjustable

from 0 to max via LCD menu system

- Audio connectors: RCA (cinch)

- Audio level: 1Vpp

- Video level: 1Vpp

- Audio input impedance: 10K resistive, unbalanced

- Pre-emphasis 50 or 75µSec (adjustable with a jumper, installed jumper = 75µS)

- TV Channels VHF model: VHF BAND I, II & III, 41-83MHz and 175-225MHz (VHF LO and VHF HI)

- TV Channels UHF model: Entire UHF band, 470MHz to 855MHz in 250KHz steps (expandable on request), also

supports radio amateur band 421-440MHz in 125KHz steps

- Output impedance 50 Unbalanced, VSWR less than 2:1 for full output

- Output connector BNC female (rear panel)

- Modulation type: DSB, occupies close to 2x the standard TV channel space, add notch filter for full compliance

- Monitoring Led: Power on

- Harmonic distortion (THD) <0,1% typ.

- Stereo Channel Separation 25 dB min 20Hz to 15kHz (NTSC stereo only)

- Voltage power supply DC 24-48V/1.5A

- Built-in CPU for controlling and monitoring

- Easy changing of frequency (LCD with UP/DOWN keys or DIP switch) and other parameters

- Stereo sound possible (with plug-in board for USA or extra board for other countries)

- Friendly user interface

- Cost effectiveness

- Board size 100x125mm

- Standard 19" rack 1HE high

- External rack dimensions (W x D x H ) 19" x depth (170mm) x height 1HE (44mm)

- Weight rack 3kg, board 0.3kg

Thank you for purchasing CyberMaxTV+ / TVMAX8000+

We hope you will enjoy it as much as we do and remember to tell your friends about it. Please feel free to leave your

comments at our website or post your experience in our forum. From all of us we wish you happy broadcasting!

Your PCS Electronics team

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TVMAX8000+ and LCD boards layouts

RF board layout

Fig. 1: TVMAX8000 RF board layout

Chapter

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Ref.

Function

S Connect ON/OFF switch here, but you can also just install a jumper. A LED diode can also be connected as

shown on the image, series resistor for the diode is on board and is not necessary.

8 MaxlinkII connector for easy connection with the optional Audio Input board which adds 2xRCA inputs, 2x

XLR inputs and USB audio input.

5 Pre-emphasis. Use this jumper to set pre-emphasis. This can either be 50uS (EU and most of the world) or 75uS

(USA). If you plan to connect stereo encoder to the MAXPRO8000+ board, place the jumper in position None

(bottom - this disables pre-emphasis).

1 Video input – RCA or video coaxial cable

2 Audio input – RCA or audio microphone cable

7 Digiamp connector enables easy control of RF amplifiers. This greatly simplifies the process of building FM

transmitters. You can read more about this connector in this manual. The flat cable is non-crossed type.

13 Internal power meter accuracy adjustment. If the internal power display on the LCD is a bit off you can correct its

accuracy with this trimmer. You have to “reboot” to verify the setting as the power detector has some DC offset

which is measured once when the unit powers up.

6 To 6-pin IO BOARD header on IO remote control board. Connects two BNC connectors from IO board to

VIDEO and AUDIO input.

10 VU bar graph meter. Connect the 3-pin jumper to VU meter here. It will show audio. Another 5-pin header for

VU meter is available next to LCD connector and carries power for display and SWR and PWR from internal

power meter.

S Posts for a small 12V or 48V fan. The output stage appreciates a bit of air flow.

3 LCD control unit, attach your LCD control module here. The flat cable used is crossed.

P Power supply connector if barrel type than center is positive. DO NOT use more than 15V for 8015/8025.

R RF output connection. BNC jack. Use a properly matched antenna. The range and success of your transmissions

will depend primarily upon the quality and position of your antenna.

F Fuse F2A

X Remote stand-by, you can put unit in standby by closing/shorting these two pins. The power will go to zero

immediately. These two pins are at the bottom of header D.

4 Optional NTSC stereo encoder board connects here. When using this board connect audio to solder posts 9

below the board.

D Power range jumper J10, use to set output power range to 0-1W,0-2W, 0-3W, 0-4W or any other range all the way

to 0-15W. No jumpers = full power

B Bias adjustment for output stage

Table 1: Description of various elements of the TVMAX8000+ TV exciter board

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LCD module layout – 3 keys model

This LCD module is based on 2x16 display with 3 keys, 2 leds and a buzzer.

Fig. 2: LCD module layout, front and back

Fig. 3: LCD module drill template, cutouts and holes, all measurements in mm

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Reference Function

1, F UP key

2, G DOWN key

3, H MENU key

4, B POWER indicator LED. Illuminated whenever you turn on the exciter.

5, C ERROR indicator LED. This LED is activated when RF output stage is NOT active. For example,

whenever if temperature protection is activated, this LED illuminates and RF power is reduced.

Important: This LED is also illuminated whenever you change frequency as the control unit turns RF

power off until adjustments are finished and VCO is locked. In such case this does not signal a problem

with temperature or SWR.

6,7 Mounting screws, M2.5 metric screw is to be used here.

8 LCD module, with backlight

A 14-pin connector for flat cable going to the RF board

D Microcontroller with software

E, L Connections to the IO board (RS232, USB) for remote control

I ALC enable, soldering this together lets you set power limit (ALC). Also lets you set band in STL model.

K You can disable keys by cutting the lead between the two pads between the “Lock Keys

” solder bridge. If

you want to re-enable the keys, solder the two pads “Lock Keys” back again. You can also connect a lock

switch here.

+LED- You can connect the LED diode here (usually used for the on/off switch.

Table 2: Description of various elements of the LCD display module

LCD module layout – rotary encoder model

Let us have a quick look at, note you can disable keys by cutting the lead between the two pads in the “Lock Keys” solder

bridge. If you want to re-enable the keys, solder the two pads “Lock Keys” back again.

Fig. 4: LCD module layout, front and back, rotary encoder version 2x16

Ce manuel convient aux modèles suivants

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