features
0.01-220 ghz operating frequency
high sensitivity
up to 55 db dynamic range (0.1uw-30mw)
small measuring time (< 1 sec)
rs-232, gpib interface
scpi protocol
applications
recommended for use by rohde & schwarz
measurements of power level of mm-wave signal
test equipment
description
the dpm-xx is a single-channel average power meter for rf tomillimeter wave frequencies that measures absolute power from 10mhz to 220 ghz.
dpm-xx power meters display measured power in milliwatts,microwatts or dbm, and also display the user-entered signalfrequency in ghz. easy operation is ensured with automatic zeroing,automatic sensor recognition and a calculation factor table storedin the memory of each power sensor.
their compact size, precise accuracy, reliability andinexpensive pricing make our dpm-xx power meters attractive assetsfor design engineering, equipment manufacturing, field engineeringand research.
elva-1’s zbd-series zero-biased detectors are used as the powersensors for our dpm power meters.to cover the range from 10mhz to220ghz band, we offer one coaxial (10 mhz-26.5 ghz) and 9 waveguidepower sensors (26.5-220 ghz in waveguide bands), soldseparately.
based on schottky barrier diode technology, our zbd powersensors provide high sensitivity, fast measurement speed and quickresponse to changes of input power. to extend the dynamic range ofdiode power sensors above their square law region, a correctionfactor is used. the amplitude and frequency curves for eachindividually-calibrated power sensor are stored in the sensor’seeprom. when a sensor is connected to a dpm control/display unit,the control/display unit automatically recognizes that sensor’scharacteristics. the typical curves for amplitude and frequencytransfer characteristics at w-band are shown on the reverse.
measured average power is displayed on a 2-line lcd screen, at ameasurement rate of 2 times per second or faster. for powermeasurements below 10-100mw (depending on frequency band), eachsensor is supplied with a full-band isolator. for powermeasurements above those levels (as high as 300mw-1watt), optionaldirectional couplers are available.
every dpm-xx is equipped with an rs-232 port for control andmeasurement data exchange with a pc. an internal gpib interfaceboard is available as an added option. on special request we canalso provide a dual channel power meter of dpmd-xx series with twoindependent measurement channels.
since the control/display unit and power sensors are soldseparately, customers only need one dpm control/display unit tointerface with all 10 of our sensors. to obtain power measurementsover a multi-waveguide frequency range, order one dpmcontrol/display unit and several adjacent-band sensors. because the standard elva-1 dpm control/display unit is asingle-channel meter, only one power sensor can be used at onetime.
dpm-xx key features and specifications
- display readings: milliwatts, microwatts or dbm
- maximum measuring rate: up to 50 times per second, default 2times per second (set at factory)
- frequency range: 10 mhz to 220 ghz
- min. measured power: 0.1 microwatt (depending on frequencyband)
- dynamic measurement range: 55db max. (depending on frequencyband)
- frequency step: 10 mhz
- scpi or elva’s command protocol
- rs-232, gpib interface
- calibration accuracy ±0.04 db (log) or ±1%
- power sensor calibration: individually calibrated, withamplitude and frequency curves in flash memory
- if a valid signal frequency is not entered before measuringpower, maximum measurement error will be ±1.5db for ka, q, u, vbands, ±2.0db for e, w bands, and ±2.5db for f, d bands, based oncalibration curve flatness.
model numberdpm-c dpm -28 dpm -22dpm -19dpm -15dpm-12dpm -10dpm -08dpm -06dpm -05frequencyband kaquvewfdgfrequency range,ghz0.01-26.51475733-5040-6050-7560-9075-11090-140110-170140-220inputwaveguide/impedance 50 ohm,coaxialwr-28wr-22wr-19wr-15wr-12wr-10wr-08wr-06wr-05wavequideflange/connectorsma,maleug-599/uug-383/uug-383/u-m ug-385/u ug-387/uug-387/u-mug-387/u-mug-387/u-mug-387/u-mdynamicrange, db (max)50555555555555555040min measured power level,dbm-33-43-43-43-43-43-40-40-35-25measurement rate (default), timesper sec 2222222222vswr (powersensor)1.2:11.3:11.3:11.3:11.3:11.4:11.4:11.4:11.4:11.4:1
available operating power options: 220 vac, 110/100 vac, orbattery power (for portable version).
