UNISource Corporation FG-8102, Operation Manual

Page 1: ...Operation Manual FG 8102 2MHz Function Generator FG 8103 3MHz Function Generator FG 8105 5MHz Function Generator FG 8110 10MHz Function Generator UNISOURCE CORPORATION BENCHTOP INSTRUMENT...

Page 2: ...e of charge will provide repair service We charge customers for repair after the one year warranty period has been expired Provided that against any failure resulted from the user s negligence natural...

Page 3: ...service center or sales outlet Safety Summary Please take a moment to read these operating instructions thoroughly and completely before operating this instrument Pay particular attention to WARNINGS...

Page 4: ...r panel 3 IN position of a bi stable push control To associate the IN position of a bi stable push control With the corresponding function 4 OUT position of a bi stable push control To associate the O...

Page 5: ...Use As FM Signal Generator 19 3 7 External Control Of VCF 21 3 8 Programmed Frequency Selection 22 3 9 Use As Sweep Generator 22 3 10 Use As Externally Controlled Sweep Generator 23 3 11 Use As Extern...

Page 6: ...the output waveforms converts the instrument to a pulse generator capable of generating rectangular waves or pulses ramp or sawtooth waves and skewed sine waves of variable duty cycle The sweep genera...

Page 7: ...1 SWEEP FUNCTION CHARACTERISTICS Mode Linear Width Variable from 1 1 to 100 1 Rate 0 5 Hz to 50 Hz 20 mS to 2 S External VCF Input Input Voltage 0 to 10 V Input Impedance Approx 1K FREQUENCY COUNTER...

Page 8: ...40 C Accuracy Specified at 23 C 5 C HUMIDITY up to 85 to 40 C without temperature extremes causing condensation within the instrument Storage Environment TEMPERATURE 20 C to 70 C HUMIDITY below 85 RH...

Page 9: ...or 115V AC 50 60 Hz power socket with protective earth contact PE contact If is available only a power socket without PE contact so a 2 conductor ac power then a power socket with PE contact must be i...

Page 10: ...OPERATION 3 1 Controls indicators and connectors FIG 1 1 FRONT PANEL OPERATOR S CONTROLS 8102 8103 FIG 1 2 FRONT PANEL OPERATOR S CONTROLS 8105 8110 7 14 1 13 11 6 8 9 12 20 2 17 3 18 4 16 5 15 19 10...

Page 11: ...rnal Frequency Counter SWEEP RATE CONTROL On Off Switch For Internal Sweep Generator Adjusts Sweep Rate Of Internal Sweep Generator SWEEP WIDTH CONTROL Pullout And Adjusts Magnitude Of Sweep VCF INPUT...

Page 12: ...nnection of the supplied AC power Voltage Selector Switch For selecting AC Input Voltage FUSE HOLDER Replacing fuse with unscrewing Ground Terminal 3 2 Operating instruction This instrument is capable...

Page 13: ...rical and unaffected by the sweep generator set the following controls as below CONTROLS POSITION Sweep width OFF push Symmetry OFF push DC offset OFF push Attenuator RELEASE button out Counter INTERN...

Page 14: ...se in digital circuits even though FUNCTION SWITCH is on sine or triangle wave 2 Considerations CAUTION KNOWLEDGE OF THE FOLLOWING FACTORS IS ESSENTIAL FOR PROPER OPERATION OF THE INSTRUMENT A The DC...

Page 15: ...y to use readings below 1 Just change to a lower range and use a higher dial setting FIG 4 USE OF DC OFFSET CONTROL D The main output BNC is labeled 50 This means that the source impedance is 50 but t...

Page 16: ...symmetrical square wave sine wave or triangle wave the positive and negative transitions are of equal time duration or 1 1 ratio This is the condition when the SYMMETRY control off When the SYMMETRY c...

Page 17: ...SYMMETRY control D If a specific pulse width specific fall time for ramp wave is not critical but a specific repetition rate is required the desired waveform may be obtained as follows a Observe the...

Page 18: ...ly with the SYMMETRY control set off before the pulse waveform is stretched Pulse width equals one half the time period of the square wave If the counter is not equipped for period measurement calcula...

Page 19: ...lication of too high amplitude or incorrect DC offset which might damage semiconductors Another advantage is the extremely fast rise time and fall time of signal To use the TTL SYNC output connect a c...

Page 20: ...1 100 200 300 500 1k 2 3 5 10 1K 2k 3k 5k 10k 20 30 50 100 10K 20k 30K 50k 100k 200 300 500 1k 100K 200k 300k 300k 1M 2K 3k 5k 10k 1M 2M 3M 5M 10M 20K 30k 50k 100k Frequency deviation versus VCF IN vo...

Page 21: ...ncy of generator is determined by the voltage applied to the VCF First of all this voltage is established by the setting of the FREQ dial Any voltage input drives the VCF TO A HIGHER FREQUENCY However...

Page 22: ...gainst its lower stop and turn on the external VCF voltage Using multiple DC voltage values which may be selected by a switch or electronic switching circuits may program a set of two or more specific...

Page 23: ...ot important In fact it may be easier to set to the desired frequencies if the dial setting is 0 1 or higher 3 10 Use As Externally Controlled Sweep Generator A ramp voltage or any other type waveform...

Page 24: ...PPLYING ANY SIGNAL TO THE INPUTS MAKE CERTAIN THAT IT DOES NOT EXCEED THESE SPECIFIED MAXIMUMS 2 FREQUENCY COUNTER GROUND POINTS ARE CONNECTED DIRECTLY TO EARTH GROUND ALWAYS CONNECT FREQUENCY COUNTER...

Page 25: ...s or detergents If the instrument gets wet for any reason dry the instrument using low pressure clean air at less than 25 PSI Use care and caution around the window cover areas where water or air coul...

Page 26: ...ld also simulate the normal signal levels used in the circuit where signal is being injected This technique is equally applicable to non audio equipment Just connect an oscilloscope voltmeter or any o...

Page 27: ...ngle waveform is ideal for this type of test because any departure from absolute linearity is readily detectable By using the triangle output the peak overload condition for an amplifier can be readil...

Page 28: ...set the AMPLITUDE control so that there is no signal clipping over the range of frequencies to be used C Select the square wave output and adjust the frequency to several check points within the pass...

Page 29: ...Square Wave Selected Dual Trace Oscilloscope Preferred...

Page 30: ...FIG 7 AMPLIFIER PERFORMANCE EVALUATION USING SQUARE WAVES A Test Set up B Equivalent Circuit Of Test Set Up C Graph Of Results GENERATOR...

Page 31: ...se sweep operation as for frequency response measurement D In speaker testing a pronounced increase of voltage will occur at some low frequency This is the resonance frequency of the speaker systems F...

Page 32: ...e shown additional frequencies can be added using redundant circuits This is convenient in frequency shift keying FSK systems FIG 9 DIGITALLY PROGRAMMED FREQUENCY SELECTION 5 8 Additional Applications...

Page 33: ...waste disposal please separate this from other types of wastes and recycle it responsibly to promote the sustainable reuse of material resources Household users should contact either the retailer wher...

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