User Manual
Contents
1. for 1OOMHz input respectively Frequency 10MHz Aging Rate lppm per month Time Base A ao 23C 5 C Line Voltage 0 005ppm for 10 variation Accuracy Resolution Time base error Gate Time Continuously vary from 10ms to 10s or 1 period of the input depending on whichever is greater Display 8 digits and overflow indicators Operation 0C 40 C Temperature Ap 10 80 RH Humidity Power 100 120 220 230 10 50 60Hz selectable internally Requirement Max consumption power is 15VA Dimension Approx 230 W x 95 H x 280 D m m Weight Approx 2 0 kgs CHANNEL A Range Coupling AC DC FREQ A 30Hz to 120MHZ 0 01Hz to 120MHz PRID A 8ns to 30ms 8ns to 100s 50mVrms Max to 10kHz tee 25mVrms Max to 80MHz Fora 35mVrms Max to 120MHz rms If frequency lt 10MHz sensitivity figures are for 4 stable digits of reading Coupling AC or DC switchable Filter Low pass switchable in or out on channel A 3dB point of nominally 100kHz Impedance IMQ nominal shunted by less than 40pF Attenuator x1 or x20 nominal Trigger Level Variable between 2 5V DC and 2 5V DC Damage Level AC amp DC x1 DC to 2 4kHz 250V DC AC rms 2 4kHz to 100kHz 600kV rms Hz FREQ gt 100kHz 6V rms AC amp DC x 20 DC to 20kHz 500V DC AC peak 20kHz to 100kHz 10MVrms Hz FREQ gt 100kHz 100V rms CHANNEL B Range 50MHz to 1 3GHz GFC 8131H 50MHz to 2 7GHz GFC 8270H Sensitivity GFC 8131H G2. input signal by 20 times by pushing in the ATT button It is recommended that when measuring signals of unknown amplitude this button should be pushed in for protection If the amplitude is too low the button can be released for greater sensitivity FREQUENCY COUNTER USER MANUAL 6 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 6 1 Standard method for calibration 1 Input offset voltage adjustment Push the TRIG LEVEL knob and turn it to the central position Connect a 10MHz sine wave to channel A input BNC Adjust SVR102 and decrease amplitude of 10MHz sine typically 20mVrms to the minimum allowable to maintain display Standard oscillator adjustment Connect a standard reference frequency 10MHz temperature stability lt 0 2ppm to channel A input Adjust the GATE TIME control for 8 digital display Adjust SVC201 for the most accurate display of the reference frequency Hysteresis Bias voltage adjustment Set the LP FILTER to ON and set the COUP to DC position Push the TRIG LEVEL knob and turn it to the central position Connect a 1Hz sine wave 30mVrms to channel A input BNC Adjust SVR103 to the minimum allowable to maintain display FREQUENCY COUNTER USER MANUAL 6 2 Cleaning To clean the instrument use a soft cloth dampened in
3. FC 8270H 25mVrms Max to 80MHz 25mVrms Max to 80MHz 15mVrms Max to 700MHz 15mVrms Max to 1GHz 25mVrms Max to 1GHz 25mVrms Max to 2GHz 40mVrms Max to 1 3GHz 50mVrms Max to 2 7GHz Accessories Instruction manual Power cord Test lead GTL 101 GTL 110 FREQUENCY COUNTER USER MANUAL 3 PRECAUTIONS 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 T200mA 220V 198 242V T100mA 120V 108 132V 250V 230V 207 253V 250V WARNING To avoid personal injury disconnect the power cord before removing the fuse holder 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 specificatio
4. FREQUENCY COUNTER FREQUENCY COUNTER USER MANUAL USER MANUAL KONING oxen 1 PRODUCT INTRODUCTION 1 PRODUCT INTRODUCTION cssssssscsssssesssesessseeee 1 2 TECHNICAL SPECIFICATION ccccceececsceceeese 2 The intelligent counters are measuring frequency and period from 3 PRECAUTIONS BEFORE OPERATION 4 the range of 0 01Hz to 120MHz on channel A and 50MHz to 3 1 Unpacking the Instrument cccsseececececes cess 4 1 3 2 7 GHz on channel B eerily Pai OAs ee ge The products also provide special features of high resolution and sensitivity for value reading expediency 4 PANEL INTRODUCTION c0cscccsssececscecseeees 6 5 APPLICATION vec ceceecsiees ae aa a aaen 9 6 MAINTENANCE cccccccecccececccecccecccscecscsesesees 11 6 1 Standard Method for Calibration scsseeeees 11 6 2 Cleaning seasea basses oecaseccbessecstene tice 12 FREQUENCY COUNTER USER MANUAL 2 TECHNICAL SPECIFICATIONS FREQUENCY COUNTER USER MANUAL Coupling AC Impedance 50Q Max Input Level 3 Vrms sine wave General Gate time displays at least 7 digits for 1s 6 digits for 100ms 5 digits for 10ms respectively 5 The maximum resolution for frequency measurement is Resolution f 100nHz for 1Hz and 0 1Hz for 100MHz input respectively and for period measurement is 10nS for 1Hz 0 1fs _ f 10
5. 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
6. e ap ae Bie is resolution of the reading Cer Se Turn the knob counterclockwise for updating faster reading or turn it D ORORO ROMO 9 ODG clockwise for more resolution digital display Pulling out the GATE TIME knob to freeze the latest displayed reading for being written down Then return the counter to normal operation by pressing back the knob When the instrument is starting measurement the LED indicator above the GATE TIME knob will light In normal operation it will blink at a rate setting by GATE TIME knob 3 Trigger Level Adjustment Adjust the trigger voltage of channel A input signal by pulling and turning the TRIG LEVEL knob for triggering The trigger voltage is Fig 1 Front panel variable over 2 5VxATT setting If push the knob it can be functioned as auto triggering this knob is only available for channel A FREQUENCY COUNTER USER MANUAL 4 LP FILTER An unstable reading is caused from measuring noise of low frequency signals on channel A The LP FILTER minimizes high frequency noise permitting the counter to measure only the desired low frequency component For more stable reading insert a 100kHz low pass filter into the channel A input circuit by pushing in the LP FILTER button Attenuator An attenuator is provided in the channel A input circuit for measuring large signals and for providing additional overload protection Reduce the
7. is Hertz Hz 17 Exponent LED Indicate the value of the measurement exponent as shown below k 1000 M 1 000 000 G 1 000 000 000 m 1 1000 u 1 1 000 000 n 1 1 000 000 000 18 DISPLAY LED 8 digits red LED display 19 OVFL LED OVEFL overflow indicator shows that one or more of the most significant digits are not displayed FREQUENCY COUNTER FREQUENCY COUNTER USER MANUAL USER MANUAL Front Panel 5 APPLICATION 1 Signal Measurements Frequency range between 0 01Hz and 120MHz press FREQ A switch then connect input signal to the channel A input BNC a D i Frequency range between 50MHz and 1 3 2 7 GHz press FREQ B AT l i l CN switch then connect input signal to the channel B input BNC an ca iF i 5 7 Press PRID switch to select period mode of operation for signal on i GWINSTEK Grc 5131H Intelligent Counter 1 3 i dl ere cer Ee E NEUTS it input A Ove M Hz AnA 1npu Ra moans POE EN P 2 Gate Time Settings The instruments features continuously adjustable gate time selection FUNCTION GATE TIME TRIGLEVFL INPUT A aD ao M VOOKHZLPFATT C ON PESETFREO PRID FREQ B ry from 10ms to 10s or one period of input depending on whichever is A Ne Ls IN A MO Roemer moles PESEE E E PULLHOLD PULLADJ fe longer The GATE TIME adjustment affects the sampling rate and th
8. n the protection provided by the equipment may be impaired FREQUENCY COUNTER USER MANUAL 4 PANEL INTRODUCTION 1 Power ON OFF Power on or off by using the button 2 Reset Restart counting by resetting counter to zero 3 FREQA Select frequency mode of operation for input A 4 PRIDA Select period mode of operation for input A 5 FREQB Select frequency mode of operation for input B 6 Gate Time LED When Gate time LED is on the counter s main gate circuit is open and the measurement is in processing 7 Gate Time KNOB Select variable measurement time from 10ms to 10s continuously minimum 1 period of the input signal The display value can be hold by pulling the knob until it is pushed back 8 TRIG LEVEL Indicate the input signal above or below the trigger level LED by setting on the TRIG LEVEL 9 TRIG LEVEL Pull the knob the TRIGGER LEVEL control will be KNOB variable over 2 5V x ATT and push the knob to proceed auto set function 10 LPF ON Insert a 100kHz low pass filter into input A 11 ATT x1 x20 Select attenuation for input A xl Directly connect input signal to input amplifiers x20 Attenuate input signal by a factor of 20 12 COUP DC AC Select DC or AC coupling for input A FREQUENCY COUNTER USER MANUAL 13 INPUT A Input BNC for input A 14 INPUT B Input BNC for input B 15 S The unit of displayed data is second S 16 Hz The unit of displayed data
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