ELECRAFT XG3 Owner'S Manual Download Page 1

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Elecraft • www.elecraft.com • 831-763-4211

L E C R A F T

X G 3

R F S I G N A L S O U R C E

Owner’s Manual

E740154 Revision D3, July 26, 2017

Summary of Contents for XG3

Page 2: ...2...

Page 3: ...equency 14 Reverse Power 14 Applications 14 Receiver Testing 15 Receiver Alignment 17 RF Signal Tracing and Troubleshooting 17 VFO LO for Experimentation 17 Updating Firmware 18 XG3 Remote Control Com...

Page 4: ...ose voltages from reaching the XG3 A fusible trace is provided that may protect the XG3 in the event you accidentally apply voltage or RF power to the RF OUT connector If that happens you may be able...

Page 5: ...erface RS 232 or USB Allows changing the preset frequencies and operating the XG3 from a personal computer using the XG3 Utility program available free from Elecraft Note For information on writing yo...

Page 6: ...riginal owner of the Elecraft product as disclosed to Elecraft at the time of order Elecraft products transferred by the purchaser to a third party either by sale gift or other method who is not discl...

Page 7: ...identally be turned on by flipping the battery over so the battery terminals are facing away from the contacts in the XG3 Note the XG3 has reverse polarity protection in the event you insert the batte...

Page 8: ...The XG3 is pre programmed with a test frequency in each band as shown below You can change these frequencies using a computer as described below under Computer Controlled Operation BAND FREQ MHz BAND...

Page 9: ...e from 1 500000 MHz to 1400 000000 MHz by entering it in the CURRENT FREQUENCY window and then pressing Enter on your computer keyboard to transfer the frequency data to the XG3 You don t need to ente...

Page 10: ...en a sweep is in progress one of the band LEDs on the XG3 will blink The blinking LED will be whichever one was selected last before the sweep was initiated Program a sweep as follows With the XG3 con...

Page 11: ...y The mark frequency is the current output frequency of the XG3 The complete set of Morse Memory meta characters are listed below Morse Memory Meta characters turn on RTTY mode characters following wi...

Page 12: ...rig_is_xg3_de_W1AW_73_ XG3 nothing Send the Morse memory Send W XG3 nothing RT character_string immediately sends the character string using RTTY To embed a space use the _ underscore character n for...

Page 13: ...ndefinitely WM n rRIG_IS_XG3 03 de_w1aw Changes to RTTY and sends LF CR then RIG_IS_XG3 then waits 3 seconds changes to CW and sends de w1aw and then repeats WM QTH_IS_APTOS_CA 95001_ Here is an examp...

Page 14: ...er a new CALIBRATION FACTOR and click on APPLY send the value to the XG3 Repeat this process until the XG3 output is on the correct frequency Reverse Power Never apply RF power a DC or an AC voltage t...

Page 15: ...lator with a log function key including the scientific calculator built into most Windows operating systems under Accessories after opening the basic calculator you may have to select View Scientific...

Page 16: ...20 to obtain the S N N ratio in dB for a 1 microvolt signal 4 If the S N N ratio is greater than 10 dB you can approximate the minimum discernable signal MDS by subtracting the S N N ratio from 107 d...

Page 17: ...isolate the XG3 from any circuits carrying voltage Avoid injecting large RF signals into the XG3 See Reverse Power on pg 14 When using the XG3 for low level signal injection you may want to couple it...

Page 18: ...nnector is inserted all the way into the jack on the top of the XG3 To install new firmware in your XG3 click on the utility Send Firmware to the XG3 button to start the transfer and follow the on scr...

Page 19: ...ry locations 0 to 11 Location 0 is associated with the 160M LED and location 11 is associated with the 2M LED See Y command for list Currently the XG3 has a fundamental frequency range of between 1 5...

Page 20: ...ent frequency C location Call memory Send C 01 XG3 nothing Send C XG3 C 01 Recalls the passed frequency memory location The output frequency will change and the associated location LED will be illumin...

Page 21: ...mand 1 Current frequency in MHz represented using 11 digits with leading zeros 2 Current Level 00 0dBm 01 33 02 73 03 107 3 Current band memory 00 11 4 Output 01 on 00 off 5 PLL Lock 01 locked 00 unlo...

Page 22: ...hown Note the XG3 output is turned on by default Send O 00 turns output off XG3 nothing Send O XG3 O 00 P minutes Set or view the auto power off timer value Allows setting or viewing the auto power of...

Page 23: ...mand and will terminate the sweep This allows the Info command to be used to determine the current frequency during the sweep See Q command for programming the 2 sweep memories Send S 01 XG3 nothing T...

Page 24: ...20000 7 020 MHz 30m LED 4 00010120000 10 120 MHz 20m LED 5 00014020000 14 020 MHz 17m LED 6 00018120000 18 120 MHz 15m LED 7 00021020000 21 020 MHz 12m LED 8 00024900000 24 900 MHz 10m LED 9 000280200...

Page 25: ...186 186 186 186 186 186 186 186 188 186 186 186 186 187 186 186 186 186 186 186 186 186 186 186 186 K Display CS2100 chip ID and revision number Retrieves the CS2100 frequency synthesizer chip identif...

Page 26: ...ard entry and operation of the unit will be suspended Returned key codes are 001 On Off Key 002 Level Key 003 Band 004 Band When the N command is sent the XG3 will not display anything until a key is...

Page 27: ...evels of 0 dBm 33 dBm 73 dBm and 107 dBm The RF output is protected from moderately excessive levels by D4 and D18 Power is applied to the MAR6 amplifier only when it is needed to conserve the battery...

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Page 30: ...hematic Below is the schematic diagram of the optional RS232 serial interface cable A kit of parts to assemble a cable is available from Elecraft order W1SERKT or you can order a factory assembled cab...

Page 31: ...i CAUTION Use an ESD safe wrist strap or touch a bare metal ground before touching the XG3 pc board A static dissipating mat is recommended 1 Remove the battery cover and battery 2 Remove the four scr...

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