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Giga-tronics GT-1000B Microwave Power Amplifier   

Operation 

Operation Manual, Part Number 34672-001, Rev. A, May 2013 

Page 11 

Chapter 3

 

Operate the GT-1000B 

3.1

 

Operating Safety and Instructions 

This section describes how to operate the GT-1000B Microwave Power Amplifier. Equipment and personal 

safety information is also provided. 
 
 

DO NOT EXCEED AN INPUT LEVEL OF +17 dBm INTO THE GT-1000B. 

EXCEEDING THIS LEVEL CAN DAMAGE THE GT-1000B MICROWAVE POWER 

AMPLIFIER. 

 
 

WHEN ENERGIZED, THE GT-1000B IS CAPABLE OF SUPPLYING POWER THAT 

CAN CAUSE DAMAGE OR INJURY. TAKE THE FOLLOWING PRECAUTIONS TO 

ENSURE SAFE SETUP AND OPERATION:

 

•

 

Verify that all cables, connectors, and equipment connected to the GT-

1000B are in good condition.

 

•

 

Do not make connections to equipment while the output of any item of 

equipment is energized.

 

 
 

Table 6: Operate the GT-1000B 

Operate the GT-1000B 

Step 

Action 

1.

 

 Verify that the output of the signal source driving the amplifier is NOT energized before 

continuing to the next step. 

2.

 

 Connect the equipment to the GT-1000B according to your application. 

NOTE:

  Verify all mating connectors are 50 Ohm, and that they are in good condition. 

3.

 

 Apply AC power to the GT-1000B by turning the front panel power switch ON. Observe that the 

POWER ON indicator on the front panel illuminates (see Figure 1 on page 4) 

 

4.

 

 Verify that the output level of the signal source is set below +17 dBm. 

5.

 

 Energize the output of the signal source. 

6.

 

 

NOTE:

 The GT-1000B has a Remote RF Off input. This input may be used to enable or disable the 

RF output. Open circuit = RF On. Short circuit to ground = RF Off. 

7.

 

 

NOTE:

  Do not exceed the safe limits of the output power from the GT-1000B into the load. The 

load should be rated for at least 30 Watts CW. 

End of Procedure 

 
 

 

CAUTION 

         WARNING 

! 

Summary of Contents for GT-1000B

Page 1: ...Giga tronics GT 1000B Microwave Power Amplifier Operation Manual Part Number 34672 001 Rev A May 2013 Operation Manual GT 1000B Microwave Power Amplifier ...

Page 2: ...00 726 4442 only within the United States 925 328 4650 Fax 925 328 4700 On the Internet www gigatronics com Warranty Giga tronics GT 1000B Series instruments are warranted against defective materials and workmanship for one year from date of shipment Giga tronics will at its option repair or replace products that are proven defective during the warranty period This warranty DOES NOT cover damage r...

Page 3: ...rective EN61010 1 1993 Electrical Safety EN61326 1 1997 EMC Emissions and Immunity Manufacturer s Name Manufacturer s Address Giga tronics Incorporated 4650 Norris Canyon Road San Ramon California 94583 U S A Type of Equipment Model Series Number Microwave Power Amplifier GT 1000B Model Numbers Not applicable Declaration of Conformity on file Contact Giga tronics at the following Giga tronics Inco...

Page 4: ...r 34672 001 Rev A May 2013 Record of Changes to This Manual Use the table below to maintain a permanent record of changes to this document Replacement pages will be issued as a TPCI Technical Publication Change Instruction and will be TPCI Number TPCI Issue Date Date Entered Comments ...

Page 5: ... and Connectors 4 2 3 1 GT 1000B Front Panel Description 5 2 3 2 GT 1000B Rear Panel Description 6 2 3 3 Replace the Fuse 7 2 4 Receiving and Inspection 8 2 5 Prepare the GT 1000B for Use 9 2 5 1 Cooling 9 2 5 2 AC Power Requirements 9 2 6 Shipping Repair and Calibration 10 2 6 1 Shipping the GT 1000B 10 2 6 2 Repairs 10 2 6 3 Calibration 10 CHAPTER 3 OPERATE THE GT 1000B 11 3 1 Operating Safety a...

Page 6: ...le 4 Receiving and Inspection of the GT 1000B 8 Table 5 GT 1000B AC Power Specifications 9 Table 6 Operate the GT 1000B 11 Table 7 Cleaning the GT 1000B 12 Table 8 General Performance 13 Table 9 GT 1000B RF Output Power 13 Table 10 Gain Flatness 14 Table 11 VSWR 14 Table 12 General Specifications 14 Table 13 AC Fuse 15 Table 14 Additional Specifications 15 Table 15 GT 1000B Performance Verificatio...

Page 7: ... CAUTION Indicates a situation which can damage or adversely affect the GT 1000B or associated equipment 1 3 Notes Notes are denoted and used as follows NOTE Highlights or amplifies an essential operating or maintenance procedure practice condition or statement Review this manual to become familiar with the instrument safety markings and instructions before operation This product is a Safety Class...

Page 8: ...erform any service unless qualified to do so Adjustments described in the manual are performed with the unit energized and protective covers removed Energy available at many points may cause personal injury For continued protection against fire hazard replace the line fuse only with a 250V fuse of the same current rating and type Do not use repaired fuses or short circuited fuse holders 1 6 Import...

Page 9: ...gain over the 2 to 20 GHz range The GT 1000B Option 06 typically provides 35 dB of gain over the 100 MHz to 18 GHz range Incorporates the CAP Wireless patented Spatium spatial combining architecture solid state amplifier The Spatium technology amplifier is based on a solid state parallel MMIC design with exceptionally wide bandwidth and high power The unique circuit topology is highly reliable wit...

Page 10: ...ation Manual Part Number 34672 001 Rev A May 2013 2 3 Controls Indicators and Connectors The following pages describe all of the features shown in Figure 1 Figure 2 and Figure 3 below Figure 1 GT 1000B Front Panel Figure 2 Front Panel Indicators Figure 3 GT 1000B Rear Panel ...

Page 11: ...til a TEMPERATURE FAULT occurs TEMPERATURE FAULT 1 When illuminated indicates the internal heat sink temperature exceeds 75 C All amplifier functions are disabled the POWER ON indicator extinguishes and any other fault indicators are disabled The amplifier remains non functional with the TEMPERATURE FAULT indicator illuminated until the heat sink temperature drops to less than 50 C at which point ...

Page 12: ...tor open circuit amplifier enabled RF On short circuit to ground amplifier disabled RF Off Open circuit voltage is nominally 5 V Short circuit current is less than 10 mA AC Input and fuse Provides the AC power input and over current protection for the amplifier For fuse specifications at the AC voltage to be used for the GT 1000B see Table 13 on page 15 NOTE Instructions for replacing the fuse are...

Page 13: ...ollows see Figure below A Use a small flat blade screwdriver to pry open the fuse compartment B Pull out the white fuse holder C You can now remove the fuse from the fuse holder Figure 4 GT 1000B Fuse Holder 4 Replace the fuse with a new fuse see Table 13 on page 15 for selecting the fuse type Push the fuse holder in and close the fuse compartment door 5 Plug the AC line cord into the rear of the ...

Page 14: ...ny signs of damage If THERE IS evidence of damage record the location and extent of the damage and contact the shipper immediately to report the damage If there is NO EVIDENCE of damage continue to the next step 2 Open the shipping container and inspect the contents for evidence of damage The contents should include any external loose options and accessories and the following Operation Manual AC l...

Page 15: ...secure it against unintended operation If the GT 1000B will be powered through an autotransformer verify that the autotransformer s common terminal is connected to the neutral connector the grounded side of the Mains supply MATCH FUSE TO INPUT AC VOLTAGE Before applying AC power to the GT 1000B check that the fuse in the rear of the instrument see Replace the Fuse on page 7 has a voltage rating th...

Page 16: ...at has been designed and built for years of trouble free service However if you experience problems with the instrument do the following 1 Contact your local Giga tronics sales office or the factory and be prepared to provide the model serial number and any included options of your instrument and a description of the problem To contact the factory directly use the following information Contacting ...

Page 17: ...tem of equipment is energized Table 6 Operate the GT 1000B Operate the GT 1000B Step Action 1 Verify that the output of the signal source driving the amplifier is NOT energized before continuing to the next step 2 Connect the equipment to the GT 1000B according to your application NOTE Verify all mating connectors are 50 Ohm and that they are in good condition 3 Apply AC power to the GT 1000B by t...

Page 18: ...ning the GT 1000B Cleaning the GT 1000B Step Action 1 Use the front panel power switch to de energize the GT 1000B 2 Disconnect the AC power cord from the rear of the GT 1000B 3 Use a small Phillips screwdriver to remove the screws that secure both upper and lower covers of the GT 1000B Remove both covers 4 Use a vacuum cleaner to remove dust from the interior and from the screen in the air exhaus...

Page 19: ...nge Standard GT 1000B 2 GHz to 20 GHz GT 1000B Option 06 100 MHz to 18 GHz Gain Standard GT 1000B 40 dB nominal GT 1000B Option 06 35 dB nominal Table 9 GT 1000B RF Output Power GT 1000B RF Output Power Frequency Range Standard Specification 2 to 8 GHz 40 dBm 10 Watts typical 38 5 dBm 7 Watts minimum 8 to 12 GHz 38 5 dBm 7 Watts typical 37 dBm 5 Watts minimum 12 to 18 GHz 37 dBm 5 Watts typical 36...

Page 20: ...tandard GT 1000B 3 5 dB maximum 100 MHz to 18 GHz GT 1000B Option 06 4 5 dB maximum NOTES Nominal gain is 40 dB Nominal gain with Option 06 is 35 dB Gain flatness is specified as maximum variation with 5 dBm input and 50 Ohm load Table 11 VSWR VSWR Input 50 Ohms Standard GT 1000B 2 1 maximum GT 1000B Option 06 2 9 1 maximum 2 5 1 typical Output 50 Ohms Standard GT 1000B 2 7 1 maximum 2 3 1 typical...

Page 21: ... AC Fuse AC Fuse 1 Operating Voltage Fuse Voltage Rating Current Rating 100 to 120 VAC 250 VAC 10 Amps 200 to 240 VAC 5 Amps 1 The fuse is a Normal Blow type T fuse for both input voltage ranges Table 14 Additional Specifications Additional Specifications Parameter Specification Stability Unconditionally Stable Maximum Load VSWR 3 1 Harmonic Distortion 1 Standard GT 1000B 2 GHz to 20 GHz 30 dBc GT...

Page 22: ...source power sensor and a power meter The test setup is shown in section 4 2 2 The procedure starts on the next page 4 2 1 Equipment and Materials Signal source Giga tronics 2520B with Option 18 Microwave Signal Generator covering 100 MHz to 20 GHz or equivalent Power meter Giga tronics 8650A B Series Power Meter or equivalent Power sensor Giga tronics 80323A 1 Watt Power Sensor or equivalent 30 d...

Page 23: ...sed between the sensor and output measure the insertion loss of the attenuator and interconnect cable 4 Set the 2520B frequency to 2 GHz Standard GT 1000B or 100 MHz GT 1000B Option 06 the frequency step size to 1 GHz Standard GT 1000B or 100 MHz GT 1000B Option 06 and the RF output power level to 5 dBm 5 If an automatic frequency correction configuration is not available input the test frequency ...

Page 24: ...rification Datasheet 1 Frequency GHz Minimum Power Output dBm Standard Option 06 Measured Power Output dBm Standard Option 06 0 1 N A 37 0 5 N A 37 1 N A 37 2 38 5 37 3 38 5 37 4 38 5 37 5 38 5 37 6 38 5 37 7 38 5 37 8 37 36 9 37 36 10 37 36 11 37 36 12 36 35 13 36 35 14 36 35 15 36 35 16 36 35 17 36 35 18 36 35 19 36 typical N A 20 36 typical N A 1 Measured at 5 dBm input Serial Number Tested by ...

Page 25: ...he GT 1000B Table 17 GT 1000B Options GT 1000B Options Option Number Description 01 Add internal coupler detector for ext ALC and power monitoring 02 Type N f input and output connectors 1 04 Both input and output connectors on front panel 1 06 Add 100 MHz to 18 GHz Frequency Range 46 Rack Slide Kit HP style rack only 1 Special connector configurations available on request Contact your local repre...

Page 26: ...Appendix A Options Giga tronics GT 1000B Microwave Power Amplifier Page 20 Operation Manual Part Number 34672 001 Rev A May 2013 Last page of Document ...

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