c-message response D51 series telephone message & circuit noise measurement 1784 chessie lane, ottawa, il 61350 ? tel: 800/252-7074, 815/434-7800 ? fax: 815/434-8176 e-mail: sales@freqdev.com web address: http://www.freqdev.com description the D51 is designed specifically to provide the c- message weighting frequency response specified in bell system technical reference 41009 for tele- phone message circuit noise measurement. the theoretical c-message characteristic simulates the perceived response of the human ear to telephone noise. the D51 filter provides a close, 1db approximation to the theoretical c-message weighting function from 60 hz to 5.0 khz. applications telephone message circuit noise measurement test equipment 1 5k 500 50 -50 -40 -30 -20 -10 0 frequency (hz) attenuation (db) 100 200 1k 2k frequency response curve theoretical frequency response frequency attenuation tolerance hz db db 60 55.7 1 100 42.5 1 200 25.0 1 300 16.5 1 400 11.4 1 500 7.5 1 600 4.7 1 700 2.7 1 800 1.5 1 900 0.6 1 1000 0.0 0.1 1200 0.2 1 1300 0.5 1 1500 1.0 1 1800 1.3 1 2000 1.3 1 2500 1.4 1 2800 1.9 1 3000 2.5 1 3300 5.2 1 3500 7.6 1 4000 14.5 1 4500 21.5 1 5000 28.5 1
D51 series pin-out and package data ordering information specifications (25c and vs 15 vdc) 1784 chessie lane, ottawa, il 61350 ? tel: 800/252-7074, 815/434-7800 ? fax: 815/434-8176 e-mail: sales@freqdev.com web address: http://www.freqdev.com we hope the information given here will be helpful. the information is based on data and our best knowledge, and we consider t he information to be true and accurate. please read all statements, recommendations or suggestions herein in conjunction with our conditions of sale which apply to all goods supplied by us. we a ssume no responsibility for the use of these statements, recommendations or suggestions, nor do we intend them as a recommendation for any use which would infringe any patent or copyri ght. pr-00D51-02 2 analog input characteristics impedance 10 k w min. source impedance 1 600 w max. bias current 2 0 voltage range 10 v peak maximum safe voltage vs analog output characteristics impedance (closed loop) < 1 w typ. 10 w max. linear operating range 10 v maximum current 3 2 ma offset voltage 5 mv offset temp. coeff. 50 m v / c noise 4 50 m v rms gain (non-inverting) 0 0.1 db @ 1 khz power supply (vs) rated voltage 15 vdc operating range 5 to 18 vdc maximum safe voltage 18 vdc quiescent current 1.5 ma typ. 2.0 ma max. temperature operating 0 to + 70 c storage - 25 to + 85 c notes: 1. maximum allowable series input resistance if gain accuracy's are to be maintained. 2. capacitor coupled. 3. output is short circuit protected to common. do not connect to vs. 4. dc to 50 khz excluding dc offset with input grounded. bottom view +vs out -vs in gnd 0.80 0.70 0.10 0.00 0.00 0.15 0.45 0.55 1.55 1.65 1.80 all dimensions are in inches all case dimensions 0.01" side view 0.80 0.025 dia. 0.15 (min) front view 0.30 1.80
|
