AR 10012305 Operating And Service Manual Download Page 15

 

Approved for public release by AR RF/Microwave Instrumentation 

032713

 

160 School House Road Souderton, PA 18964-9990 • 215-723-8181 • www.arworld.us 

Page 1 of 1

 

Model DC7420, M1 

Dual Directional Coupler 

50 Watts CW 

0.8GHz–18GHz 

 

The Model DC7420 is a wide-band dual directional coupler intended for use with the 10ST1G18, 20ST1G18 
and other "T" Series microwave TWT amplifiers.  The wide frequency range assures flexibility in coupling high 

power amplifiers to power meters, spectrum analyzers, receivers, and other measuring instruments.  The dual 
directional design allows the user to monitor both forward and reflected power, a much needed characteristic 
in RF susceptibility testing for amplifier overdrive protection, field control, and load protection.  Low insertion 
loss allows efficient coupling to the load. 

 

The Model DC7420 is uniquely suited for use with our “ST” series power amplifiers, other amplifiers operating 
within this frequency and power range, and our PM2000 Series power meters. 
 

SPECIFICATIONS 

 

FREQUENCY RANGE ............................................ 0.8- 18 GHz 

 

POWER maximum ................................................ 50 watts CW; 300 watts peak 

 

COUPLING FACTOR ............................................ 20 

 1.3 dB (includes flatness) 

 

COUPLING FLATNESS .......................................... 

1.2 dB 

 

DIRECTIVITY ......................................................... 15 dB typical 
 12 

dB 

minimum 

 

INSERTION LOSS ................................................. 1.6 dB maximum 

 

IMPEDANCE (Main Line) ....................................... 50 ohms, VSWR 1.5:1 maximum 

 

CONNECTORS 
 

Mainline ........................................................ SMA (precision) female 

 

Coupled ........................................................ SMA (precision) female 

 

WEIGHT ............................................................... 0.128 kg (4.5 oz) 

 

SIZE (W x H x D) ................................................... 19.6 x 2.74 x 1.3 cm (7.7 x 1.08 x 0.5 in) 
 

Model Number 

Connector 

DC7420 

SMA (precision) female 

DC7420M1* 

SMA (precision) female 

*The M1 option includes A2LA calibration. 

 
 

Summary of Contents for 10012305

Page 1: ...Operating and Service Manual DC7420 Model 10012305 Part Number Serial Number 160 School House Road Souderton PA 18964 215 723 8181 Fax 866 859 0582 www arworld us...

Page 2: ......

Page 3: ...riction of the use of certain hazardous substances in electrical and electronic equipment recast RECYCLING WEEE DIRECTIVE 2012 19 EU OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 4 July 2012 on was...

Page 4: ......

Page 5: ...clearance on all vented sides of the equipment to permit the airflow required for proper ventilation Do not restrict airflow into the equipment by blocking any vents or air intakes Restricting airflow...

Page 6: ...a assembly may be heavy requiring two persons to lift Use caution when installing or removing unit Follow all equipment setup and lifting instructions specified in this document Ensure connectors are...

Page 7: ...von 10 2 cm 4 in auf allen bel fteten Seiten des Ger ts ein um eine ausreichende Luftzirkulation zu gew hrleisten Beintr chtigen Sie den Luftstrom des Ger ts nicht indem Sie L ftungs ffnungen oder de...

Page 8: ...allen in diesem Dokument angegebenen Anweisungen zur Anbringung Stellen Sie sicher dass alle Anschl sse f r den beabsichtigten Betrieb geeignet sind Informationen zu den Anschl ssen erhalten Sie im Be...

Page 9: ...tilation Ne limitez pas le flux d air allant dans l quipement en bloquant tout vent ou entr e d air La restriction du flux d air peut endommager l quipement causer des coupures intermittentes ou des d...

Page 10: ...dent lorsque vous installez ou retirez l unit Respectez toutes les instructions concernant l installation et le levage de l quipement indiqu es dans ce document Assurez vous que les connecteurs sont a...

Page 11: ...is voor goede ventilatie mogelijk te maken Belemmer de luchtstroom in het apparaat niet door ventilatieopeningen of luchtinlaten te blokkeren Het belemmeren van de luchtstroom kan leiden tot schade a...

Page 12: ...nstellen en optillen van de apparatuur die in dit document worden vermeld Zorg ervoor dat de connectoren geschikt zijn voor de beoogde werking De connectoren worden gespecificeerd in de gebruikershand...

Page 13: ...DC7420 is quite simple The input signal is fed into the jack J1 marked INPUT and the output is taken from the jack J2 marked OUTPUT The input and output jacks on the unit are Type SMA Precision Femal...

Page 14: ...Model DC7420 2 Rev...

Page 15: ...ity testing for amplifier overdrive protection field control and load protection Low insertion loss allows efficient coupling to the load The Model DC7420 is uniquely suited for use with our ST series...

Page 16: ......

Page 17: ...Model DC7420 Rev 5...

Page 18: ...Model DC7420 6 Rev...

Page 19: ...cover If the security label is removed and or cut the warranty of the module will be voided Vacuum tubes in the L series amplifiers traveling wave tubes in TWT amplifiers and power heads will be free...

Page 20: ......

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