LDG AT-600Pro Operation Manual Download Page 25

 

 

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CARE AND MAINTENANCE 

The  AT-600Pro  tuner  is  essentially  maintenance-free.  Power  limits  in  this  manual  should  be 

strictly  adhered  to.  The  outer  case  may  be  cleaned  as  needed  with  a  soft  cloth  slightly  dampened 
with  household  cleaning  solution.  As  with  any  modern  electronic  device,  the  AT-600Pro  can  be 
damaged  by  temperature  extremes,  water,  impact,  or  static  discharge.  LDG  strongly  recommends 
the  use of a good quality,  properly  installed  lightning  arrestor  in  the  antenna  lead. 

TECHNICAL  SUPPORT 

The  LDG  customer  support  staff  is  ready  to  answer  your  product  question  by  telephone  and 

by  e-mail.  We  know  that  you  will  enjoy  your  product  even  more  knowing  LDG  is  ready  to 
answer  your  questions  as the  need arises.   

LDG  regularly  updates  on-line  information  so  the  best  on-line  support  information  is 

available  all  day 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  specifications  and  photographs  you  can  use  to  help  make  your  purchase  decision.    Don’t 
forget  the  links  to  all  of  the  quality  LDG  Dealers  also  ready  to  help  you  make  that  purchase 
decision. 

TWO-YEAR  TRANSFERRABLE  WARRANTY 

Your  product  is  warranted  against  manufacturer  defects  in  parts  and  labor  for  two  full  years 

from  the  date  of  purchase.  This  two-year  warranty  is  also  transferable.  When  you  sell  or  give 
away  your  LDG  product,  give  the  new  owner  a  copy  of  the  original  sales  receipt  and  the  two-
year  warranty  goes  with  the  new owner. 

There  is  no  need  to  complete  a  warranty  card  or  to  register  an  LDG  product.  Your  product 

receipt  establishes  eligibility  for  warranty  service,  so  save  that  receipt.  Send  your  receipt  with  the 
product  whenever  you  send  your  product  to  LDG  for  repair.  Products  sent  to  LDG  without  a 
receipt  are considered  requests  for  out-of-warranty  repair. 

LDG  does  not  warranty  against  product  damage  or  abuse.  This  means  that  a  product  failure, 

as  determined  by  LDG,  to  be  caused  by  the  customer  or  by  other  natural  calamity  (e.g.  lightning) 
is  not  covered  under  the  two-year  warranty.  Damage  can  be  caused  by  failure  to  heed  the 
product’s  published  limitations  and specifications  or by not following  good Amateur  practice.    

OUT  OF WARRANTY  SERVICE 

If  a  product  fails  after  the  warranty  period,  LDG  wants  to  help  you  get  it  fixed.  Send  the 

product  to  us  for  repair  any  time  you  like.  We  will  determine  what  needs  to  be  done  and based on 
your  instructions,  either  contact  you  with  an  estimate  or  fix  it  and  contact  you  with  a  request  to 
pay any  repair  charges. 

Summary of Contents for AT-600Pro

Page 1: ...ONS MANUAL MANUAL REV A PAGE 1 LDG AT 600Pro 600W 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 l...

Page 2: ...Tune 15 Bypass Mode 16 Error Indication 16 Advanced Operation 18 Manual Inductor Capacitor Adjustments 18 High Low Relay Adjustment 18 Manual Memory Store 18 Status Check 19 Application Notes 20 Mobil...

Page 3: ...or even newer high power transceivers JUMPSTART OR REAL HAMS DON T READ MANUALS Ok but at least read this one section before operating the AT 600Pro Connect a 50 ohm coax jumper cable from the antenna...

Page 4: ...to 16 VDC 1A max 7mA when idle Dimensions 10 5 x 8 5 x 2 8 Weight 3 pounds AN IMPORTANT WORD ABOUT POWER LEVELS The AT 600Pro is rated at 700 watts maximum power input at most Many amplifiers output w...

Page 5: ...C Dn Manually decrease capacitance L Up Manually increase inductance L Dn Manually decrease inductance Tune Initiates memory or full tuning cycle Momentary push places tuner in bypass PWR Meter Bargr...

Page 6: ...coax feedline to this SO 239 connector Ant 2 Connect a second 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 f...

Page 7: ...ting the AH 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 inte...

Page 8: ...PAGE 8...

Page 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...

Page 10: ...tton is held for one half to 2 5 seconds and then released Long Press The button is held for more than 2 5 seconds and then is released FUNC Button The FUNC button is pressed first then the button is...

Page 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...

Page 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...

Page 13: ...ewly selected antenna are also recalled This is useful when comparing antenna performance on the same frequency Transmitting and Receiving During receive operation only the antenna and bypass indicato...

Page 14: ...d tuning sequence where the AT 600Pro 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 acce...

Page 15: ...ory tuning cycle Again bypass the amplifier while tuning The AT 600Pro will not tune if the transmit power is over 150 watts or if the transmit power exceeds 100 watts during high SWR conditions in or...

Page 16: ...t panel LEDs in a particular fashion The following errors are reported ERR_NO_MATCH Unable to find a suitable match Upon completing an entire full tuning cycle no combination of inductors and capacito...

Page 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...

Page 18: ...ays the state of the High Low Impedance relay Repeatedly 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 transm...

Page 19: ...press 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...

Page 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...

Page 21: ...e transmission line can be thought of as a long string of capacitors and inductors in series parallel and the antenna is a kind of resonant circuit At any given RF frequency each of these can exhibit...

Page 22: ...a This circuit measures forward and reflected power from which SWR may be calculated some meters calculate SWR for you More advanced units can measure forward and reflected power simultaneously and sh...

Page 23: ...digital converters that provide signals proportional to the forward and reflected power levels The single lead primary through the center of the sensor transformer provides RF current sampling Diodes...

Page 24: ...pacitance Toggle Auto Semi Mode Display Auto Semi Selection L Up Increase Inductance Set PWR Meter Scale Display PWR Meter Scale L Dn Decrease Inductance Set Auto Tuning SWR Threshold Display Auto Tun...

Page 25: ...ase decision TWO YEAR TRANSFERRABLE WARRANTY Your product is warranted against manufacturer defects in parts and labor for two full years from the date of purchase This two year warranty is also trans...

Page 26: ...nline when your product is en route back to you Please be assured that our staff makes every effort to complete repairs ahead of our published wait time Your patience is appreciated Repairs can take s...

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