Instek GFC-8010H Manual - Artisan Technology Group
Contents
1. A rtisan Artisan Technology Group is your source for quality TecmoogyGroup new and certified used pre owned equipment FAST SHIPPING AND SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT DELIVERY Experienced engineers and technicians on staff Sell your excess underutilized and idle used equipment TENS OF THOUSANDS OF at our full service in house repair center We also offer credit for buy backs and trade ins IN STOCK ITEMS www artisantg com WeBuyEquipment 7 EQUIPMENT DEMOS HUNDREDS OF InstraV ea REMOTE INSPECTION LOOKING FOR MORE INFORMATION MANUFACTURERS Remotely inspect equipment before purchasing with Visit us on the web at www artisantg com 7 for more our interactive website at www instraview com information on price quotations drivers technical LEASING MONTHLY specifications manuals and documentation RENTALS ITAR CERTIFIED D a gaa tia Contact us 888 88 SOURCE sales artisantg com www artisantg com FREQUENCY COUNTER USER MANUAL SS aa FREQUENCY COUNTER USER MANUAL S _ ES SSS CONTENTS PAGE 1 PRODUCT INTRODUCTION cccccsssssecsssssscesereeeees 1 1 Description ccccccccecccceccccceccescescccscscsecsecees VD POaturesiscsacascissessssscacsessvcssesevssessesesessvescesexssascs 2 TECHNICAL SPECIFICATION cccccsesecececcececees 3 PRECAUTIONS BEFORE OPERATION 0 s0ee0 3 1 Unpacking the Instrument sc2. Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com A rtisan Artisan Technology Group is your source for quality TecmoogyGroup new and certified used pre owned equipment FAST SHIPPING AND SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT DELIVERY Experienced engineers and technicians on staff Sell your excess underutilized and idle used equipment TENS OF THOUSANDS OF at our full service in house repair center We also offer credit for buy backs and trade ins IN STOCK ITEMS www artisantg com WeBuyEquipment 7 EQUIPMENT DEMOS HUNDREDS OF InstraV ea REMOTE INSPECTION LOOKING FOR MORE INFORMATION MANUFACTURERS Remotely inspect equipment before purchasing with Visit us on the web at www artisantg com 7 for more our interactive website at www instraview com information on price quotations drivers technical LEASING MONTHLY specifications manuals and documentation RENTALS ITAR CERTIFIED D a gaa tia Contact us 888 88 SOURCE sales artisantg com www artisantg com
3. Q201 Q202 pair The three amplifier stages identified as U202 in the schematic are ECL logic stages biased in its linear region each stage having a gain before feedback of about 5 A positive feedback at the output of the third amplifier when reflected through the gain of the proceeding three amplifier states including the Q201 Q202 pair results in about a 5mV hysteresis in the input triggering levels to aid in noise rejection Q203 and Q204 translate the ECL levels to TTL levels The signal is presented directly to the counter IC U301 The IC U301 provides all the functions of the counter and display result through LED U201 regulates the input 9 volts signal from the line voltage transformer and rectifier circuit When the power switch is set to on position approximately 5 0 volts is applied to the circuit 14 Artisan Technology Group Quality Instrumentation FREQUENCY COUNTER USER MANUAL S aaa 6 2 Frequency Measurement Accuracy Measurement Accuracy Frequency measurement accuracy is determined by the following two conditions 1 HAcount 2 Time base accuracy The count error is inherent to digital meters and is produced by the phase relationship between the gate signal and the input signal shown in Fig 7 The counted result of 1 count increased or decreased depends on the phase difference Gate Signal ae l l l 2 counts l l l Shaped
4. output l l l l l l 3 counts Shaped output Fig 7 count error 15 Guaranteed 888 88 SOURCE www artisantg com FREQUENCY COUNTER USER MANUAL High Accuracy Measurement The accuracy of the time base oscillator is almost completely determined by the characteristics of the crystal oscillator The specifications of the time base are Oscillation frequency 10MHz Aging rate 1x10 month Temperature stability 5x10 25 45 C x107 calibration ambient temperature 0 40 C The temperature characteristics for the crystal oscillator used in this instrument shown in Fig 8 in which you can see the temperature coefficient is as large as 25 C Accuracy temperature coefficient Temperature 2x 0 Fig 8 Temperature characteristics of the crystal oscillator 16 FREQUENCY COUNTER USER MANUAL a The temperature stability of the crystal oscillator is 2x10 temperature 0 60 C with 25 C as reference The temperature of 0 60 C is given here because the internal temperature rise is approximately 20 C and the 0 40 C ambient temperature is because the crystal oscillator is similar to it If the temperature of the crystal oscillator is assumed to be 25 C and set to 1OMHz that is over the worst case temperature stability of 2x10 0 60 C temperature range and since the frequency is 10MHz a variation of only 10x10 x 2x10 2x10 200Hz is possible In actual use worst ca
5. performed more than 1 hour after switching on and an instrument is calibrated under 20 30 C ambient temperature 5x10 can be guaranteed even when the worst crystal oscillator is used The 5x10 2545 C represented as a percentage becomes 0 0005 Aging rate 1x10 Ymonth means that the change after one week under the constant ambient temperature state as a percentage of 0 0001 18 FREQUENCY COUNTER USER MANUAL 7 MAINTENENCE The following instructions are executed by qualified personnel only To avoid electrical shock do not perform any servicing other than the operating instructions unless you are qualified to do so 7 1 Standard method for calibration After 50 minutes warm up apply the STD OUT signal of a standard or high accuracy of 1x107 to the input of the frequency counter Adjust Trimmer SVC301 to display value of 10 000000MHz with the standard of 10MHz and the resolution of 1s An accuracy of over 1x107 can be obtained through this procedure Use a screwdriver not metal tip to adjust the trimmer 7 2 Cleaning To clean the instrument use a soft cloth dampened in a solution of mild detergent and water Do not spray cleaner directly onto the instrument because it may leak into the cabinet and cause damage Do not use chemicals containing benzine benzene toluene xylene acetone or similar solvents Do not use abrasive cleaners on any portion of the instrument 19 Artisan Technology Group
6. CAUTIONS BEFORE OPERATION 3 1 Unpacking the Instrument The instrument has been fully inspected and tested before shipping from the factory Upon receiving the instrument please unpack and inspect it to check if there is any damages caused during transportation If any sign of damage is found notify the bearer and or the dealer immediately 3 2 Checking the Line Voltage The instrument can be applied any kind of line voltage shown in the table below Please check the line voltage indicated in the label attached on the real panel to replace correct fuses WARNING To avoid electrical shock the power cord protective grounding conductor must be connected to ground When line voltages are changed replace the required fuses shown as below 100V 90 110V T160mA 220V 198 242V T100mA 120V 108 132V 250V 230V 207 253 V 250V i WARNING To avoid personal injury disconnect the power cord before removing the fuse holder Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com FREQUENCY COUNTER USER MANUAL 3 3 Equipment Installation and Operation Ensure there is proper ventilation for the vents in the case If this equipment is used not according to the specification the protection provided by the equipment may be impaired 3 4 General Preparation 1 2 3 4 5 6 When the impedance is 1MQ the maximum voltage applied to the input depends on the frequenc
7. cceccesceceeceesees 3 2 Checking the Line Voltage ssecssssecsssecsceees 33 Equipment Installation and Operation ee0 34 General Preparation sccccccecceceseccceccecceseeses 4 PANEL INTRODUCTION ccccecsccececececssceceeecee 5 APPLICATION ccccceccecceccscesecccncceccsecsecesceesens S L SenSitivity cccceccecceccecceccceccecccececccceseescessecees 5 2 Input Sensitivity Characteristic cccccececcceceeeee 5 3 Maximum Input Voltage cccceccecseececcenceeceeees 54 Typical Applications c ccccceccccccecccecceccecseees 6 CIRCUIT DESCRIPTION 3 wesiecsisiscsveswecarsanescscescessvacce 6 1 Theory of O peration ccccccceeccesccceccescsesceees 6 2 Frequency Measurement Accuracy cseccecsceees 7 MAINTENANG Bivicsvoaccsven sca tities Gieciescceesencsd coucsecdes tes 7 1 Standard Method for Calibration cseeeeeee T 2 ClEaning ccceccccccccccceccecceccecceccesccccsecsecsecsecseces Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com FREQUENCY COUNTER USER MANUAL a 1 PRODUCT INTRODUCTION 1 1 Description The GFC 8010H frequency counter is a general purpose counter with a measurement range from 0 1Hz 120MHz and 20mVrms high input sensitivity The incorporation of the most updated semiconductor techniques develops a compact high performance highly
8. e maximum input voltage Vs frequency characteristics is shown as Fig INPUT VOLTAGE Vrms 150 NOTE These Values must not be exceeded when the signal contains a DC Component DC Voltage peak AC Voltage 1KHz 50 100KHz 1MHz 100 150 Fig 6 Maximum Input Voltage Frequency 5 4 Typical Applications Several examples for typical applications are described below 1 The output frequency of a transmitter or transceiver can be measured if the output power is about 1W by merely connecting a one turn clip cord to several tens of centimeters from antenna The length of the distance is determined by the magnitude of the output 12 Artisan Technology Group Quality Instrumentation FREQUENCY COUNTER USER MANUAL SSS SSS 2 Measurement can also be easily performed when calibrating the oscillation frequency of a grid dip meter by merely connecting the one turn clip cord 3 Measurement of tracking the frequency through the oscillator stage multiplier stage and output stage can be performed by making a small 2 3 turn coil and coupling it to each turned circuit the oscillations may be produced by the input capacitance and its resonant frequency with too many turns of coil Note As the product has a high sensitivity induction may cause erroneous counting if you touch the red end ungrounded side of the clip cord Therefore hold the black clip or coaxial cable when performing measurements according to above method Measure
9. ment by connecting the accessory cable directly to the test circuit is described below 4 Measurement can generally be jerformed by merely connecting the black side of the clip cord to ground GND and the red side to the test point 5 When the capacitance of the cable will have an affection on the test circuit When measuring turned circuits or high output impedance circuit perform measurement by inserting a high resistance in series with the red side of the clip cord Always be sure to ground the cord when perform the measurement of 4 and 5 above If possible ground the cable to the ground point of the test circuit This procedure will reduce the affection of noise A wide variety of measurement can be conceived in addition to 1 5 fully utilizing the special features of the counter 13 Guaranteed 888 88 SOURCE www artisantg com FREQUENCY COUNTER USER MANUAL ee 6 CIRCUIT DESCRIPTION 6 1 Theory of Operation In order to get the most benefit from the frequency counter it s useful to comprehend the circuit thoroughly We have attempted every possible to utilize the latest developments in large scale integration to provide the greatest performance for the money and at the same time to reduce the complexity of circuit and increase reliability Ignoring the prescaler for the moment let us assume the input signal arrives at the 10MHz to 100MHz input labeled CHA in main board This signal is first amplified by the
10. reliable and high resolution instrument 1 2 Features Additionally the frequency counter offers several other features Extremely high resolution to lu Hz Worst case guarantee of X tal stability specifications The line filter is enclosed in a static shield to resist noise Low pass filter for accuracy measurement of low frequency Compact amp lightweight Low power consumption High quality crystal allows an extremely accurate measurement of frequencies Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com FREQUENCY COUNTER USER MANUAL es 2 TECHNICAL SPECIFICATIONS 10Hz 10MHz 15mV Sensitivity 10MHz 40MHz 20mV rms 40MHz 80MHz 35mV 80MHz 120MHz 50mV IMQ 35PF Max Input Voltage _ 150Vrms Coupling System AC coupling Time Base Oscillation Frequency 10MHz Aging rate Hx10Month Temp stability 25 C 45 C 45x10 0 C S0 C _42x10 a Counting Capacit papain Gate Time Operating Temp 0 C 40 C Range 10 C 70 C Power Consumption Approx 5W Power Requirement 100V 120V 220V 230V 10 50 60Hz Approx 245 W x 95 H x 280 D m m Weight Approx 1 7kgs Instruction manual ACCESSORIES Test lead GTL101 1u Hz on 10Hz range with 10 seconds gate time Max Resolution 0 1Hz on 100MHZz range with 10 seconds gate time FREQUENCY COUNTER USER MANUAL 3 PRE
11. rge roles Generally hysteresis occurs in the waveshaping circuit of the counter In order for the instrument to put up resistance to noise the circuit will not work even when the noise is lower than the hysteresis applied The waveshaping circuit is a Schmitt circuit and the operation of this circuit is described below VH V V VH Hysteresis voltage Input Voltage V yu ys y OH Output Voltage v OL Fig 2 Operation of the Schmitt circuit difference between these two voltage Vy V V is called the hysteresis voltage But if both V and V don t react each other no output will be obtained and the Schmitt circuit will not work out with the states of 1 2 and 3 of Fig 3 shown as below SSAA AAN O AN V NON T FN IN oy ral A A E NZ y iA l vaj gee ee T 1 2 way Fig 3 States under which the schmitt circuit doesn t work From above description it can be easily understood whether or not the Schmitt circuit works is attributed to the SENSITIVITY Attenuator to determine the magnitude of the input voltage An example of preventing erroneous counting by correctly selecting the SENSITIVITY shown as Fig 4 below a Correctly counting a distortion signal by selecting suitable SENSITIVITY However when the input voltage is too high a frequency doubles the unknown frequency will be indicated b Erroneous counting occurs when high frequency noise is superimposed on the unknown signal and the inp
12. se conditions are produced in two circumstances 1 Frequency calibration is performed as soon as the switch is set to ON at an ambient temperature of C and measurement is performed after ample time has elapsed after the switch is turned ON at an ambient temperature of 40 C 2 Calibration is performed after ample time has elapsed after the switch has been turned ON at an ambient temperature of 40 C and measurement performed as soon as the switch is turned ON at an ambient temperature of 0 C Under these worst case conditions the guarantee accuracy is 4x10 calibration temperature 0 40 C and becomes 0 004 Switch ON ye 30min Time elapsed after switch ON Ambient temperature 23 Fig 9 Example of crystal oscillator rise characteristics 17 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com FREQUENCY COUNTER USER MANUAL In actual practice the worst case conditions described above are almost never encountered and furthermore the high accuracy state is maintained An example of rise characteristics given in Fig 9 and the frequency changes following after the change of temperature As shown from the figure the crystal oscillator of this instrument reached the thermally balanced state for about 50 minutes after turning on the switch This instrument is calibrated about 60 minutes before shipment at the place of 25 C ambient temperature If measurement is
13. tion insert a 100kHz Low Pass Filter intc input for low frequency measurement 4 FREQ PRID Frequency or period measurement by setting the button 5 Gate Time Selector Press the gate time button to 10 sec 1 sec or 0 1 sec for measurement 6 Power ON OFF Power on or off by using the button 7 Gate Time LED The gate time of 10 sec 1 sec or 0 1 sec will be displayed in the LED by setting the Gate button 8 Over LED Overflow indicator shows that one or more of the most significant digits are not displayed Fig 1 Front panel 9 Displayed LED Display 8 digits of frequency data 10 Exponent and units LED indicator shows S and Hz of the unit and indicate LED the value of the measurement exponent as shown below k 1000 M 1 000 000 G 1 000 000 000 m 1 1000 p 1 1 000 000 n 1 1 000 000 000 6 7 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com FREQUENCY COUNTER FREQUENCY COUNTER USER MANUAL USER MANUAL S as 5 APPLICATION As refer to Fig 2 when input voltage is at V the output voltage is high 5 1 Sensitivity Vou while input voltage is at V the output voltage is low Vor The The role of the SENSITIVITY or attenuator switch in a common measuring instrument is to protect the input circuit and prevent the meter from going off scale For a counter SENSITIVITY is still one of the la
14. ut voltage of the Schmitt circuit is too high However a correct counting can be obtained by selecting suitable SENSITIVITY Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com FREQUENCY COUNTER FREQUENCY COUNTER USER MANUAL USER MANUAL a _ _ _ Ss The erroneous counting can be prevented by satis ying two conditions below a To make peak to peak value of the noise voltage smaller than Vy b When peak to peak value of unknown signal is larger than Vy perform measurements by first setting SENSITIVITY to 1 10 then set it to 1 1 range to protect the input circuit and avoid erroneous counting One good method is to conduct measurements at the smallest possible input within the counter display value dispersion range When the signal is a pure waveform it will not occur erroneous counting with any magnit ude input lower than the input destroyed voltage 5 2 Input Sensitivity Characteristic a When unknown signal is distorted The input sensitivity of this instrument is shown as Fig 5 SENSITIVITY mVrms 100Hz 30MHz 60MHz 120MHz 150MHz b When high frequency noise superimposed on unknown signal Fig 4 Fig 5 Input Sensitivity Characteristic 10 11 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com FREQUENCY COUNTER USER MANUAL ae 5 3 Maximum input voltage Th
15. y and the position of the SENSITIVITY switch This relationship is shown in Fig 6 and the values given in this table must be strictly observed Initially set SENSITIVITY to 1 10 if the counter doesn t count set the switch to 1 1 range and then perform measurement This procedure will reduce the danger of damaging the input circuit Use an AC power source within 100V 120V 220V or 230VH0 Use the instrument within an ambient temperature range of 0 40 C Do not put the counter on the top of high temperature equipment and be sure not to block the ventilation of the instrument Never permit water to enter the interior of the instrument and never subject the instrument to severe mechanical shock When the instrument is operated in an especial noisy environments insert a noise filter into the power source When low frequencies are measured push the low pass filter switch can attenuate high frequency components to prevent probable false triggering FREQUENCY COUNTER USER MANUAL a Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com FREQUENCY COUNTER FREQUENCY COUNTER USER MANUAL USER MANUAL E aeS O 4 PANEL INTRODUCTION Front Panel 1 Counter Input BNC type connector 2 ATT 1 1 1 10 Attenuation button of input sensitivity 1 1 Directly connect input signal to input amplifiers 1 10 Attenuate input signal by a factor of 10 3 LPF ON OFF Set to ON posi
Download Pdf Manuals
Related Search