Lumiloop RF Power Meter

This artic­le focu­ses on Lumi­loop’s LSPM 1.0 and LSPM 2.0tri­ple chan­nel high speed RF power meters.
Learn about 11 advan­ta­ges of using Lumi­loop’s high speed, high pre­cis­i­on and high dyna­mic mea­su­re­ment devices.

#1 Fits your needs: 2 models, 1 to ∞ chan­nels
The LSPM 1.0 covers a fre­quen­cy ran­ge from 9 kHz to 6 GHz.
The LSPM 2.0 covers a fre­quen­cy rance from 9 kHz to 26.5 GHz.
Both power meters are available with 3, 2 or 1 chan­nel. Mul­ti­ple LSPM devices can be hard­ware syn­chro­ni­zed to crea­te mea­su­re­ment sys­tems with vir­tual­ly unli­mi­t­ed num­ber of power meter chan­nels. The syn­chro­niza­ti­on can be exten­ded to LSPro­be systems.

LSPM 1.0
LSPM 2.0

#2 Fle­xi­ble: Con­nec­tion Rear­wards
Both, the LSPM 1.0 and the LSPM 2.0 model, are also available with rear­ward con­nec­tors. This helps for a bet­ter fit and inte­gra­ti­on in your 19″ rack.

LSPM 2.0 Rear­ward Con­nec­tor Front View
LSPM 2.0 Rear­ward Con­nec­tor Back View

#3 19″ Rack Inte­gra­ti­on
The LSPM 1.0 / LSPM 2.0 Power Meters can be used as stand-alo­ne device or inte­gra­ted in a 19″ rack via front pla­tes. This fle­xi­bi­li­ty allows for the opti­mum fit to your mea­su­re­ment needs and lab space available.

Inte­gra­ti­on 2x LSPM 1.0 – 5 chan­nels in 19″ rack
Mul­ti device inte­gra­ti­on: 2x LSPro­be CI and LSPM 1.0 in 19″ rack

#4 Power Meter Cali­bra­ti­on
The LSPM 1.0 / LSPM 2.0 Power Meters use manu­fac­tu­rer cali­bra­ti­on data as well as optio­nal exter­nal accre­di­ted cali­bra­ti­on for obtai­ning accu­ra­te power values. Lumi­loop offers the all-round care­free ser­vice of accre­di­ted cali­bra­ti­on acc. to ISO 17025. This includes che­cking your mea­su­ring equip­ment and hand­ling the accre­di­ted cali­bra­ti­on. Click here to learn more.

#5 Third Par­ty and In-House Soft­ware Inte­gra­ti­on
The LSPM 1.0 / LSPM 2.0 Power Meters are inte­gra­ted in many third par­ty EMC test auto­ma­ti­on soft­ware. In-house EMC soft­ware can easi­ly talk to the devices via well-docu­men­ted SCPI com­mands. This makes the inte­gra­ti­on into your lab sur­roun­dings as easy as pie!

#6 Con­ti­nuous and Pul­sed RF Power Mea­su­re­ments
The high-speed Power Meters LSPM 1.0 / LSPM 2.0 enable con­ti­nuous RF power mea­su­re­ments with high reso­lu­ti­on, high speed and low noi­se. The high speed gains hig­her accu­ra­cy by aver­aging.
LSPM 1.0/ LSPM 2.0 are not limi­t­ed to the acqui­si­ti­on of qua­si-sta­tic power levels. With the sam­pling rate of 2 MSamples/s, Lumi­loop’s Power Meters are able to mea­su­re rapidly chan­ging RF signals. The LSPM’s lar­ge dyna­mic ran­ge and fast pul­se respon­se make it ide­al­ly sui­ted for the ana­ly­sis of pul­sed signals and sweep measurements.

#7 Trig­ge­red Power Mea­su­re­ments
Trig­ge­red power mea­su­re­ments allow the user to take full advan­ta­ge of the LSPM’s excep­tio­nal­ly high-speed mea­su­re­ments. Wave­form acqui­si­ti­on can be trig­ge­red by soft­ware, by hard­ware (BNC trig­ger input) or a channel’s power level with a set thres­hold. The trig­ger sys­tem has a built-in dead-time of 100 μs, i.e., it can pro­cess up to 10,000 events per second.

LSPM GUI Radar Tab

#8 Sweep Mea­su­re­ments
The LSPM 1.0 / LSPM 2.0 Power Meters sup­port the eva­lua­ti­on of a power wave­form con­tai­ning a level or fre­quen­cy sweep, thus enab­ling sped-up mea­su­re­ments. For sweep mea­su­re­ments the acqui­red wave­form typi­cal­ly con­ta­ins mul­ti­ple sec­tions of equal size, whe­re each sec­tion is cha­rac­te­ri­zed by con­stant mea­su­re­ment con­di­ti­ons. Most com­mon­ly, the fre­quen­cy set­ting of a set­up is alte­red in a step-wise man­ner in order to mea­su­re the fre­quen­cy-depen­dent power of a set­up under test. In this case, each sec­tion of the power wave­form will have a dif­fe­rent, con­stant fre­quen­cy asso­cia­ted with it. Sweep mea­su­re­ments return the aver­a­ged power value for each sec­tion of the wave­form. Dead-times at the begin­ning and end of each sec­tion may be appli­ed to account for the set­ting cha­rac­te­ristics of the set­up under test. Due to the 2 MSample/s sam­pling rate of the LSPM Power Meters, wave­form sec­tions may be shorter than a mil­li­se­cond, enab­ling the eva­lua­ti­on of more than a thousand distinct fre­quen­ci­es per second. This method is much fas­ter than set­ting the fre­quen­ci­es indi­vi­du­al­ly and mea­su­ring power values via mul­ti­ple dis­crete queries.

#9 Power Sta­tis­tics
Two types of power sta­tis­tics are available for LUMILOOP LSPM 1.0 / LSPM 2.0 Power Meters: con­ti­nuous sta­tis­tics and trig­ge­red sta­tis­tics based on acqui­red wave­forms. Con­ti­nuous sta­tis­tics eva­lua­te all mea­su­red power values from the time that sta­tis­tics coll­ec­tion is enab­led to the time that a sta­tis­tics snapshot is crea­ted. Con­ti­nuous sta­tis­tics are coll­ec­ted in the back­ground and can be per­for­med over arbi­tra­ry peri­ods of time. Trig­ge­red sta­tis­tics eva­lua­te only power values of wave­forms in memo­ry. All SCPI com­mands of the sta­tis­tics sub­sys­tem are available for both con­ti­nuous and trig­ge­red coll­ec­ted and trig­ge­red power values.

LSPM GUI Con­ti­nuous Statistics

#10 Stream Recor­ding
The LSPM Power Meters sup­port recor­ding data at the power meter’s full sam­pling rate for vir­tual­ly unli­mi­t­ed dura­ti­ons of time. The recor­ding time is only limi­t­ed by the disk space available.

#11 Vir­tu­al Power Meters
The LSPM TCP Ser­ver is capa­ble of instan­tia­ting vir­tu­al power meters inclu­ding the simu­la­ti­on of arbi­tra­ry power pat­terns. Vir­tu­al power meters can replace phy­si­cal meters and signal gene­ra­tors during mea­su­re­ment set­up, fea­ture demons­tra­ti­on, third par­ty EMC soft­ware deve­lo­p­ment and off-line signal ana­ly­sis, inclu­ding set­ups using mul­ti­ple power meters.
Vir­tu­al power meters sup­port all ope­ra­ting modes. Trig­ge­ring is sup­port­ed with the excep­ti­on of exter­nal trig­ger input and out­put. Vir­tu­al power meters sup­port the coll­ec­tion of con­ti­nuous statistics.

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