Related Manuals for Kenwood FC-758
Summary of Contents for Kenwood FC-758
- Page 1 FREQUENCY COUNTER FC-758 INSTRUCTION MANUAL KENWOOD CORPORATION © PRINTED IN JAPAN B50-7728-00(N) 26408...
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Page 2: Table Of Contents
C O N T E N T S G E N E R A L •• S P E C I F I C A T I O N S ••• 3„ P R E C A U T I O N S F O R U S E P A N E L E X P L A N A T I O N... -
Page 3: G E N E R A L
G E N E R A L The F C - 7 5 8 is a m u l t i - f u n c t i o n a l counter. It can be controlled externally w i t h r e a r - p a n e l gate signal or used to measure periods and to count event inputs (event through f r o n t - p a n e l operations. -
Page 4: S P E C I F I C A T I O N S
2. S P E C I F I C A T I O N S [Period Measurement ( A ) ] [Frequency Measurement (Channel A ) ] 0.285/<s to 200 m s ( 5 H z to 3.5 Measurement Range kHz m o d e : 5 H z to 1 0 M H z Measurement Range M H z ) - Page 5 [ i n p u t Characteristics (Channel A ) J [Reference O s c i l l a t o r ] Frequency Band 5Hz to 1 0 0 M H z ( C o u p l i n g : A C Oscillation Frequency C r y s t a l Oscillation 10.0MHz...
- Page 6 Counting T i m e 0.01s, 0.1s, 1.0s, 10s ( G a t e t i m e ) Resolution 0.1 Hz to 100 Hz [ G e n e r a l Requirements J Power Supply 100/120/220/240V ± 10%(Max 2 5 0 V ) , 50/60Hz, Voltage 2 0 V A...
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Page 7: Precautions For Use
PRECAUTIONS FOR USE - T u r n o f f the product and then connect it w i t h the A C d» T h i s counter can s t a r t its operation a t the moment w a l l outlet by using the accessory power cable cord. -
Page 8: Panel E X P L A N A T I O N
PANEL E X P L A N A T I O N value is displaed in Megaherz. 4 - 1 Front Panel © D i s p l a y L E D ® P O W E R O N - — . / Q F F J B . S w i t c h (See Figure 1.) The display consists of e i g h t - d i g i t L E D s The P O W E R ON J U L / O F F M s w i t c h is provided to indicating a l l the measurement values. - Page 9 Figure 1. Front Panel...
- Page 10 Note t h a t t h i s s w i t c h can work together w i t h because i t s resolution functions better than the channel A only but does not affect channel B. channel A ' s one.
- Page 11 selected by F U N C switch The following operational modes can be selected In any measurement mode other than the Event w i t h this s w i t c h : Input T o t a l Count operation mode: k H z / 1 0 M H z ( frequency) measurement mode If t h i s s w i t c h is pressed ( J B L ) , the current...
- Page 12 in which t h i s product counts the number of Note : The m a x i m u m frequency to be handled in channel A input cycles and then outputs each t h i s measurement mode is 100MHz. The proper count value to the display continuously.
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Page 13: R E A R P A N E L
s w i t c h @ . 4 - 2 Rear Panel (See Figure 2.) The G A T E L E D is provided to indicate the © T O T A L I Z E I N P U T S T A R T / S T O P Input juck counter is currently active. - Page 14 Figure 2. Rear Panel...
- Page 15 Power supply voltage selector ( L I N E V O L T A G E S E L E C T ) The power supply voltage selector is provided to select the supply voltage t h a t is applied to the counter.
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Page 16: Case Surface
T h i s adjustment applies to both of the C H A 4 - 3 Case Surface ( 1 0 . 0 M H z ) and C H B (3.90625MHz) channels. There is an opening on the case surface to enable The opening is normally covered w i t h a rubber cap. -
Page 17: Operating Procedures
5. OPERATING PROCEDURES frequency varies depending on the measurement modes. In the kHz measurement mode, up to E v e r y time when you s t a r t using the F C - 7 5 8 M u l t i - 1 0 M H z - f r e q u e n c y can be processed while the Functional Counter, look a t the rear panel and v e r i f y m a x i m u m frequency t h a t can be handled in the... - Page 18 new cycle is complete. Press L P F ( l o w pass f i l t e r ) switch © ( J L ) 5 - 1 - 2 . Frequency Measurement w i t h C H A N N E L B eliminate noise signal components.
- Page 19 If H O L D s w i t c h © is pressed during frequency average of a l l the cycles measured. The number of measurement, the current measurement value on cycles to be measured can be 1, 10, 100 or 1000. the Display is held a s it is.
- Page 20 measurement, the current measurement value on the it gets too f a s t due to h i g h - f r e q u e n c y signal Display is held a s it is. If pressed again, a new measurement.
- Page 21 The m a x i m u m input frequency is 1 0 M H z . operation w i l l be started a t the moment. Select the T O T A L / 1 0 M H z (event input t o t a l If the T O T A L I Z E I N P U T S T A R T / S T O P juck is...
- Page 22 to the C H A N N E L A juck is handled first by the The user has pressed H O L D switch @ ( - i s * . ) . L P F circuit (about 100kHz) and then input to the In this case, the counting measurement is counter.
- Page 23 Figure 4 shows display examples. changed to 100Hz (0.001 M H z ) . Figure 4 a indicates the value of " 1234.567" w i t h - Figure 4 d shows the typical display example in k H z / ^ s L E D (3) active. T h i s means t h a t the the event t o t a l measurement mode.
- Page 24 precision d a t a can be displayed. The problems discussed above may be triggered by If relatively h i g h - f r e q u e n c y signal is measured, the standing waves. frequency measurement mode should be used instead In this case, the input circuit should be properly of the period measurement mode because higher terminated or the cable length needs to be adjusted.
- Page 25 Sn the following paragraphs, the relationship Period measurement mode between measurement modes and measurement The period measurement mode processes the speci- delays w i l l be discussed. fied number of cycles and then outputs the aver- Frequency measurement mode age cycle time.
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Page 26: Measuring Considerations
6 - 2 Change in measurement mode and resolution MEASURING CONSIDERATIONS A new measurement operation is started each time when a measurement mode or resolution value is 6 - 1 Use of attenuator probe changed. The measurement display d a t a on Display The input impedance ( 1 . - Page 27 The G A T E L E D remains inactive while the R E S E T Resolution G A T E time switch is being held down. Output display (measuremer value setting The G A T E L E D w i l l resume blinking a t the interval period) moment when the R E S E T s w i t c h is released.
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Page 28: Maintenance
MAINTENANCE Bear in mind t h a t voltage change results requires C A U T I O N a new fuse rating. Be sure to disconnect the power cable f r o m the Case 1 : V o l t a g e change f r o m 1 0 0 V / 2 0 0 V to 2 2 0 V / socket, before conducting the following operation. - Page 29 A p r o d u c t of K E N W O O D C O R P O R A T I O N 2-5, 1 -chome Shibuya, Shibuya-ku, Tokyo 1 50, Japan...