LDG AT-1000PROII, Operation Manual

Page 1: ...NS MANUAL MANUAL REV A PAGE 1 LDG AT 1000ProII 1000W 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 ww...

Page 2: ...tion 16 Advanced Operation 18 Manual Inductor Capacitor Adjustments 18 High Low Relay Adjustment 18 Manual Memory Store 18 Status Check 19 Application Notes 20 Mobile Operation 20 Internally Generated...

Page 3: ...ng the AT 1000ProII 1 Connect a 50 ohm coax jumper cable from the antenna jack on your amplifier to the TX jack on the back of the AT 1000ProII This cable must be rated to 1000 watts 2 Connect your an...

Page 4: ...Alinco radios available Optional large display external analog panel meter Power requirements 11 to 16 VDC 1A max Dimensions 11 x 10 x 3 Weight 4 pounds 10 oz AN IMPORTANT WORD ABOUT POWER LEVELS The...

Page 5: ...decrease inductance Tune Initiates memory or full tuning cycle Momentary push places tuner in bypass PWR Meter Bargraph display indicates forward power in 0 100 and 0 1000 watt ranges SWR Meter Bargra...

Page 6: ...he front panel Also this jack is active when the AT1000ProII is turned off 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...

Page 7: ...radios the supplied interface cable also powers the tuner For ICOM radios supporting the AH 3 or AH 4 external tuner connect the 4 pin Molex connector of the optional IC PAC ICOM interface cable to t...

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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: ...button 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 i...

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: ...me 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...

Page 13: ...he same frequency Transmitting and Receiving During receive operation only the antenna and bypass indicator LEDs are lit on the AT 1000ProII During transmit the forward RF power level is displayed on...

Page 14: ...tuning sequence where the AT 1000ProII 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 acc...

Page 15: ...a memory tuning cycle Again bypass the amplifier while tuning The AT 1000ProII will not tune if the transmit power is over 150 watts or if the transmit power exceeds 100 watts during high SWR conditio...

Page 16: ...ng a tuning cycle there are several conditions that may occur that cause the tune to fail All are reported as an error via blinking the front panel LEDs in a particular fashion The following errors ar...

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: ...displays 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 t...

Page 19: ...ess 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 1...

Page 20: ...e car 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 l...

Page 21: ...cause of this LDG recommends switching the amplifer off before tuning and then once tuning is complete the AT1000ProII should be switched to semi automatic mode FUNC Auto for as long as the amplifier...

Page 22: ...hree parts of the system have the same impedance the system is said to be matched and maximum transfer of power from the transmitter to the antenna occurs While the transmitter output circuit and tran...

Page 23: ...antenna and vice versa Simple tuners use variable capacitors and inductors the operator adjusts them by hand while observing reflected power on the SWR meter until a minimum SWR is reached The LDG Ele...

Page 24: ...ltages instead of currents for the analog to digital converters that provide signals proportional to the forward and reflected power levels The single lead primary through the center of the sensor tra...

Page 25: ...he impact of tuning transmissions CARE AND MAINTENANCE The AT 1000ProII tuner is essentially maintenance free Power limits in this manual should be strictly adhered to The outer case may be cleaned as...

Page 26: ...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...

Page 27: ...o 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 de...

Page 28: ...ch Support Send your carefully packaged unit with the Repair Form to LDG Electronics Inc Attn Repair Department 1445 Parran Rd St Leonard MD 20685 PRODUCT FEEDBACK We encourage product feedback Tell u...