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PAGE  2

 

 

Table Of Contents 

Introduction 

3 

Jumpstart, or “Real hams don’t read manuals!” 

3 

Specifications 

4 

An Important Word About Power Levels 

4 

Important Safety Warning 

4 

Getting to know your AT-200ProII 

5 

Front Panel: 

5 

Back Panel: 

6 

Installation 

7 

Basic Operation 

10 

Using the Front Panel Buttons  

10 

User Configuration Options 

10 

Transmitting and Receiving 

13 

Bypass LED 

13 

Tuning 

14 

Basic Tuning Operation 

14 

Manual Memory Tune 

14 

Manual Full Tune 

15 

Bypass 

15 

Error Indication 

16 

Advanced Operation 

18 

Manual Inductor/Capacitor Adjustments 

18 

High/Low Z Relay Adjustment 

18 

Manual Memory Store 

18 

Status Check 

19 

Application Notes 

20 

Mobile Operation 

20 

Internally Generated RF Noise 

20 

MARS/CAP Coverage 

20 

Application Hint for Tuning with the Kenwood TS-480HX 

21 

Theory of Operation 

22 

Some basic ideas about impedance  

22 

Transmitters, transmission lines, antennas, and impedance 

22 

The LDG AT-200ProII 

24 

Quick Reference 

26 

A Word About Tuning Etiquette 

26 

Care and Maintenance 

27 

Technical Support 

27 

Two-Year Transferrable Warranty 

27 

Out Of Warranty Service 

27 

Returning Your Product For Service 

28 

Product Feedback 

28 

Содержание AT-200PROII

Страница 1: ...ONS MANUAL MANUAL REV B PAGE 1 LDG AT 200ProII 200W Automatic Antenna Tuner LDG Electronics 1445 Parran Road St Leonard MD 20685 2903 USA Phone 410 586 2177 Fax 410 586 8475 ldg ldgelectronics com www...

Страница 2: ...ror Indication 16 Advanced Operation 18 Manual Inductor Capacitor Adjustments 18 High Low Z Relay Adjustment 18 Manual Memory Store 18 Status Check 19 Application Notes 20 Mobile Operation 20 Internal...

Страница 3: ...newer high power transceivers JUMPSTART OR REAL HAMS DON T READ MANUALS Ok but at least read this one section before operating the AT 200ProII 1 Connect a 50 ohm coax jumper cable from the antenna jac...

Страница 4: ...11 to 16 VDC 1A max Dimensions 10 5 x 8 5 x 2 8 Weight 2 pounds 12 oz 1 23 kg AN IMPORTANT WORD ABOUT POWER LEVELS The AT 200ProII is rated at 250 watts maximum power input at most Many amplifiers out...

Страница 5: ...le Momentary push places tuner in bypass PWR Meter Bargraph display indicates forward power in 0 25 and 0 250 watt ranges SWR Meter Bargraph display indicates SWR during tuning or transmission Bypass...

Страница 6: ...a secondary 50 ohm antenna coax feedline to this SO 239 connector Gnd wing nut Connect to the antenna system ground Tx Connect a 50 ohm jumper coax from this jack to the ANT jack on the rear of the tr...

Страница 7: ...3 or AH 4 external tuner connect the 4 pin Molex connector of the optional ICOM interface cable to the radio s Tuner port Then connect the 1 8 stereo plug on the other end of the ICOM interface cable...

Страница 8: ...PAGE 8...

Страница 9: ...PAGE 9 Note Optional Y ACC cable has a red plug on the radio end of the cable and a black plug on the tuner end The radio end plugs into the ACC port on the radio...

Страница 10: ...on is held for more than 2 5 seconds and then is released FUNC Button The FUNC button is pressed first then the button is pressed momentarily and released e g FUNC Ant means Press the Func button and...

Страница 11: ...Average mode is suitable for 100 duty cycle modes such as FM RTTY or PSK Peak mode is more useful on modes with varying duty cycle such as SSB or AM The factory default is average mode To toggle betwe...

Страница 12: ...there is RF present and the SWR exceeds a pre set level The default setting is fully automatic tuning mode To toggle between semi and fully automatic modes press Func C Dn The LED display will show o...

Страница 13: ...st this much In other words if the 1 3 LED is lit it means that the SWR is between 1 3 and 1 5 1 No LEDs lit means the SWR is less than 1 1 1 Bypass LED The Bypass LED indicates that all of the induct...

Страница 14: ...g sequence where the AT 200ProII rapidly tries varying combinations of inductance and capacitance values and then zeroes in on the best match possible When the tuning cycle is complete if an acceptabl...

Страница 15: ...I front panel for more than 2 5 seconds The LEDs will display the following pattern to confirm a full tuning cycle is requested If you are using one of the optional radio interface cables the radio wi...

Страница 16: ...as present at the beginning of a tuning cycle In other words the Tune button was pressed to request a tune cycle but the transmitter was not keyed up ERR_LOST_RF RF power disappeared before the tuning...

Страница 17: ...dditionally if the forward power exceeds the maximum value selected for the meter scale the PWR LEDs will blink an over range condition The four right most LEDs of the PWR bargraph will cycle during o...

Страница 18: ...dly press one of these buttons to increase or decrease multiple times or simply hold the button and the button will auto repeat You may also transmit while increasing or decreasing so that the SWR val...

Страница 19: ...ress the L Dn Thresh button The display will show the currently selected SWR threshold value While holding the Func button the bargraph display will show the following pattern to indicate that the AT...

Страница 20: ...your transceiver s built in SWR meter will show the tuner s progress Remember to keep your eyes on the road however In most cases a match will be recalled from memory so the SWR will snap to a low va...

Страница 21: ...n arrow button above the MULTI knob until 67 is showing Press the MENU button again to return to normal operation Pressing the PF key on the radio will now begin transmitting a low power tuning carrie...

Страница 22: ...ctive The output circuit of a transmitter consists of inductors and capacitors usually in a series parallel configuration called a pi network The transmission line can be thought of as a long string o...

Страница 23: ...ot the case operators often need to transmit at frequencies other than resonance resulting in a reactive antenna and a higher SWR where F Forward power watts R Reflected power watts SWR is measured us...

Страница 24: ...ariation of the Bruene circuit This SWR measuring technique is used in most dual meter and direct reading SWR meters Slight modifications were made to the circuit to provide voltages instead of curren...

Страница 25: ...gle Antenna Selection Toggle High Low Impedance Display High Low Impedance C Up Increase Capacitance Toggle Peak Average Power Display PWR Meter Mode C Dn Decrease Capacitance Toggle Auto Semi Mode Di...

Страница 26: ...y and every day The LDG website provides links to product manuals just in case you lose this one When you are thinking about the purchase of other LDG products our website also has complete product sp...

Страница 27: ...ng number or a delivery verification receipt This way you know the product arrived safely at LDG Be sure to give us your email address so our shipper can alert you online when your product is en route...

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