IfTA Char­­geSi­g­nalGe­­ne­ra­t­or: The Charge and Sig­nal Gen­er­at­or

Test & Cal­ib­rate Meas­ure­ment Chains

The IfTA ChargeSig­nalGen­er­at­or is a charge and sig­nal gen­er­at­or for test­ing piezo­elec­tric elec­trodes. The light and handy device can sim­u­late sensors, e.g. high tem­per­at­ure sensors for pres­sure and ac­cel­er­a­tion.

The in­tu­it­ive op­er­a­tion is car­ried out via keys and a 2.7 inch dis­play. Thanks to the bat­tery sup­ply, dis­play back light­ing and car­ry­ing strap, the charge gen­er­at­or can also be used in dark and dif­fi­cult to ac­cess places. A Lemo con­nec­tion is avail­able for dif­fer­en­tial charge sig­nals, which is identic­al to the com­mon sensors. Other vari­ants are covered by op­tion­al ad­apters.

Fre­quency and amp­litude of the out­put sig­nal are freely de­term­ined by the user. In ad­di­tion to the si­nus­oid­al wave­form, the sim­u­lat­or also of­fers an asym­met­ric wave­form to check the po­lar­ity of the cabling of a meas­ure­ment chain. The syn­chron­ous voltage out­put can also be used to de­term­ine trans­fer func­tions, e.g. of charge amp­li­fi­ers.

Through pre­cise di­git­al syn­thes­is, the IfTA ChargeSig­nalGen­er­at­or of­fers high ac­cur­acy and can also be used for cal­ib­ra­tion. The charge and sig­nal gen­er­at­or can op­tion­ally be cal­ib­rated trace­ably to the na­tion­al ref­er­ence stand­ard (DIN EN ISO / IEC 17025).

Ad­vant­ages of the Charge and Sig­nal Gen­er­at­or

Test Meas­ure­ment Chains Ef­fi­ciently

Com­pact and light­weight design, net­work-in­de­pend­ent bat­tery power and user-friendly op­er­a­tion save im­port­ant time dur­ing com­mis­sion­ing.

Meas­ure Trans­fer Char­ac­ter­ist­ics

With the syn­chron­ized voltage out­put, the trans­fer char­ac­ter­ist­ics of the charge meas­ure­ment chain can be iden­ti­fied eas­ily.

Find and pre­vent er­rors ef­fect­ively

Func­tion­ing and well cal­ib­rated meas­ure­ment chains are the basis for fail­ure-free op­er­a­tion of test benches, en­gines and in­dus­tri­al plants. The IfTA ChargeSig­nalGen­er­at­or en­sures this from the be­gin­ning and helps to elim­in­ate causes quickly in case of er­rors.

Charge Sig­nal Gen­er­at­or for Qu­al­ity Man­age­ment

op­tion: Trace­able cal­ib­ra­tion ac­cord­ing DIN ISO 17025

With the mar­ket in­­­tro­­­duc­­­tion of a trace­­­able cal­ib­ra­­­tion of the IfTA charge sig­n­al gen­er­­­at­or to a na­­­tion­al stand­ard ac­­­cord­ing to DIN ISO 17025, it can now also be used for qual­ity man­age­­­ment pro­­­cesses. The IfTA ChargeSig­n­alGen­er­­­at­or thus en­­­­­ables highest pre­­­ci­­­sion for mo­bile test­ing and cal­ib­ra­­­tion of meas­ure­­­ment chains in a handy format.

IfTA ChargeSig­nalGen­er­at­or

  • Tech­nic­al data
  • De­liv­ery scope and equip­ment
IfTA ChargeGenerator - Function and charge generator


Power sup­ply:

4x AA bat­tery or USB-B


33 x 150 x 107 (H x W x L in mm)


271 g (without bat­ter­ies)


Dif­fer­en­tial charge:


Charge single-ended:

BNC (fe­male)


BNC (fe­male)

sig­nal out­put

Fre­quency range:

1 ... 20.000 Hz with 0.1 Hz step size

Charge range:

0 ... 1000 pC with 0.1 pC step size

Ten­sion range:

0 ... 1000 mV with 0.1 mV step size


sine and half sine wave

The charge & sig­nal gen­er­at­or is sup­plied in a prac­tic­al car­ry­ing case in­clud­ing a mi­cro­dot ad­apter (BNC - 10-32 UNF).

The fol­low­ing ad­apters and ad­apter cables are op­tion­ally avail­able:

  • Lemo 0S.302 - 7/16-27 UNS-2A
  • Lemo 0S.302 - wire end fer­rules
  • BNC - M4 x 0.35

The sig­nal and charge gen­er­at­or is de­livered with a fact­ory cal­ib­ra­tion as stand­ard.

The trace­ab­il­ity of the fact­ory cal­ib­ra­tion to a na­tion­al stand­ard (DIN EN ISO/IEC 17025) is op­tion­ally avail­able.

  • Type: 6 HP mod­ule
  • Weight: 270 g
  • Samp­ling rate: Max. 51.2 kHz
  • Bit res­ol­u­tion: 24-bit
  • IEPE sup­ply: 10 mA at max. 20 V

Charge Am­pli­fi­er

  • Valid input ranges:
    ±200 pC, ±2000 pC
  • Sig­nal-to-noise ratio: Max. 137 dB

  Voltage and Cur­rent Input
  • Input im­ped­ance: 1Ω, 11 pF (Voltage input)
  • 100 Ω (Cur­rent input)
  • Valid input ranges: ±2.5 V, ±25 V (Voltage)
  • ±25 mA, ±44 mA ef­fect­ive (Cur­rent)
  • Sig­nal-to-noise ratio: Max. 145 dB
  • High-pass fil­ter: 3 dB at 0.036 Hz

Strain-gauge Pres­sure Sensors
 (e.g. Kulites)

  • Sup­ply voltage: 5 V, max.10 mA
  • Valid input ranges: ±5 mV, ±50 mV


  • Sup­por­ted types: Full, half and quarter bridge
  • Sup­ply cur­rent: 10 mA at max. 5 V
  • Valid input ranges: ±5 mV, ±50 mV
  • Sig­nal-to-noise ratio: Max. 130 dB


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