Kenwood FL-140 User Manual Download

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©PRINTED IN AN

WOW-FLUTTER METER

KENWOO

D

INSTRUCTION MANUAL

KENWOOD CORPORATION

FL-140

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Summary of Contents for FL-140

Page 1: ... PRINTED IN AN WOW FLUTTER METER KENWOOD INSTRUCTION MANUAL KENWOOD CORPORATION FL 140 ...

Page 2: ...F I C A T I O N S 4 3 P A N E L E X P L A N A T I O N 6 4 P R E C A U T I O N F O R USE 11 5 O P E R A T I N G P R O C E D U R E 12 6 M A I N T E N A N C E 15 2 A product of KENWOOD CORPORATION 1 7 5 2 chome Shibuya Shibuya ku Tokyo 1 50 Japan ...

Page 3: ...s Values can be read directly on the meter d Five ranges 0 03 0 1 0 3 1 and 3 offers wide range of measurement e The FL 140 incorporates 3kHz 3 15kHz signal gen erator with highly stable crystal oscillators which can be used for self calibration of the drift meter The FL 140 is suitable as a signal source for recording f Only checking The monitor lamp enables wow and flutter measurements without a...

Page 4: ...ics 0 5 6 H z 3dB 1dB J I S 0 3 6 H z 3 d B 1dB C C I R D I N Flutter characteristics 6 2 0 0 H z 3dB IdB Unweighted characheristics 0 5 200Hz 3dB 1dB J I S 0 3 2 0 0 H z 3 d B l d B C C I R D I N Roll off 0 5Hz or less 6 d B O C T or more J I S 200Hz or more 1 5 d B O C T or more JIS 0 3Hz or less 6 d B O C T or more C C I R D I N 200Hz or more 1 5 d B O C T or more C C I R D I N Maximum input vo...

Page 5: ...pedance Approx 600O Unbalanced Drift Meter Indication accuracy 5 of full scale Drift measuring range 5 Power Requirements Supply voltage 100 120 220 240V A C 10 Max 250V 50 60Hz Power consumption Approx 8W Environmental Within specification temp humidity 1 0 3 5 C 85 R H Operating temp humidity 0 40 C 85 R H Dimensions 212Wx 133H x272Dmm Max dimensions 212Wx 156H x312Dmm Weight Approx 3 8kg Access...

Page 6: ...3 PANEL EXPLANATION Fig 1 Front panel Fig 2 Rear panel 6 ...

Page 7: ...suress wow with frequency components from 0 5 to 6Hz or 0 3 to 6Hz 3dB Values en closed in parentheses are for D I N C C I R 0 F L U T T E R Measures flutter with frequency components from 6 to 200Hz 3 d B 0 U N W T D Measures wow and flutter with frequency compo nents from 0 5 to 200Hz or 0 3 to 200Hz 3 d B Values enclosed in parentheses are for D I N C C I R I INDICATION switches Select the stan...

Page 8: ... R button is pressed set OSC to 3kHz INPUT MONI TO R lamp This lamp lights red if no signal or improper signal is applied to the INPUT terminal It lights green if proper signal is applied to the INPUT terminal i e the input frequency is 3kHz 300Hz for J I S C C I R or 3 15kHz 300Hz for DIN and input level is 3mV or more Drift meter zero adjust screw For adjustment of the mechanical zero point of t...

Page 9: ...ltage is approx 0 2Vrms Output impedance is 60012 Distortion is 1 or less Use this signal to measure wow and flutter of tape recorders etc in accordance with the standard R E C O R D E R terminal Outputs DC voltage in proportion to the meter reading when measuring wow and flutter If the meter reads the full scale value output voltage is approx 1V Output impedance is 60011 Supply voltage selector F...

Page 10: ...ope digital memory scope F E T analyzer etc to observe waveform or analyze the frequency of wow and flutter Connect to a pen recorder or digital memory scope to record wow and flutter Outputs 3kHz or 3 15kHz signal for recording Usage of Output Terminals on Rear Panel Fig 4 10 ...

Page 11: ...upply voltage shall be the rated voltage 10 The supply frequency shall be 50 or 60Hz 5 Prior to turning on power check for the mechan ical zero point of the meters 6 Use this meter within the specification temperature and humidity range from 10 to 35 C 85 RH 7 Prior to starting wow and flutter measurement confirm the standard used and conditions 8 The maximum input voltage of this meter is 100V DC...

Page 12: ...ons is selected set the OSC switch to 3kHz then adjust the D R I F T meter to 0 If the DIN button is selected set the OSC switch to 3 15kHz then adjust the D R I F T meter to 0 Accurate measurement is not secured unless this 0 calibration is performed How to Use as Wow Flutter Meter 1 Connect this meter and a test piece i e a tape recorder record player etc as shown in F i g 5 To measure wow and f...

Page 13: ...13 Rear panel of FL 140 Front panel of FL 140 R or L REC Terminal R or L Play terminal R or L Channel Record player Tapedeck F i g 5 ...

Page 14: ...W 0 5 0 3 6Hz F L U T T E R 6 200Hz UNWTD 0 5 0 3 200Hz Values enclosed in parentheses are for DIN CCIR Standards 3 Select an INDICATION button in accordance with the standard used 4 Set the R A N G E switch to a range where the W O W F L U T T E R meter can be read easily in accordance with the magnitude of wow and flutter 5 The D R I F T meter reads shift and fluctuation of the revolution of a t...

Page 15: ...e fuse holder in the rear panel using a standard screwdriver see Fig 6 3 Take out the blown fuse and in its place insert a new fuse 4 Set the label of your line voltage to the mark then plug the fuse holder containig the new fuse into the rearpanel CHANGING THE S U P P L Y V O L T A G E Remove the fuse holder in the rear panel using a standard screwdriver Then set the label of your line voltage to...

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