1. Safety Precautions This product complies with the requirements of the following European Community Directives: 2004/108/EG (Electromagnetic Compatibility) and 2006/95/EG (Low Voltage) as amended by 2004/22/EC (CE-Marking). Overvoltage category II; pollution degree 2. To ensure safe operation of the equipment and eliminate the danger of serious injury due to short-circuits (arcing), the following safety precautions must be observed.
3. Chapter 1 Getting started ® The front and rear panels, operations and functions of the PeakTech 4065 function generator are described in this chapter so as to help users to master the basic operation as quickly as possible. The main contents of this chapter are as follows: 3.1.
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3.1.2. Connect to power supply Boot the generator only under the following conditions. Voltage: AC 100 ~ 240 V Frequency: 45 ~ 65 Hz Power consumption: < 30 V A Temperature: 0 ~ 40°C Humidity: < 80 % Plug the attaching plug into an AC 100 ~ 240 V outlet with grounding conductor, press the mains switch on the panel in to turn on the generator.
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3.3. Rear panel Modulation in Trig in Count in Power socket USB Device USB Host 3.4 Display introduction The display screen display two groups of digits, the group on the left with 6 digits shows frequency, period and attenuation and so on of the signals. And the 5 digits on the right show amplitude, offset, duty cycle and so on of the signals.
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【Count/Edit】key: press this key to select waveform edition function when CHA output user-defined waveforms, and select frequency measurement function under other functions, press again to return back to continuous function. 【Menu】key: key for menu, select different options circularly under different functions(see below function option list).
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3.6.1. CHA continuous function * CHA continuous function: CHA outputs stable and continuous signal with continuous. Press【Shift】【CHA/CHB】key, select “CHA” option, and set CHA parameters. * Frequency setting: set frequency value as 3.5kHz Press【Freq】key and select “Hz” unit, press【3】【.】【5】【kHz】. * Frequency adjusting: Press【<】or【>】key to move the cursor, switch the adjusting knob left or right to decrease or increase the digit on the cursor position, borrowing from or carrying to the former digit continuously.
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3.6.4. Amplitude modulation function * Press【AM】key to output amplitude modulation signal. * Modulation frequency setting: set modulation frequency as 1 kHz * Press【Menu】key, select “Mod_f” option and press【1】【kHz】. * Modulation amplitude depth setting: set modulation amplitude depth as 50% * Press【Menu】key, select “Depth” option and press【5】【0】【%】. * Modulation waveform setting: set modulation waveform as sinewave * Press【Menu】key, select “Shape”...
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3.6.8. Frequency sweeping function * Frequency sweeping function: Press【Sweep】key to output frequency sweeping signal. * Start frequency setting: set the start frequency as 5 kHz Press【Menu】key, select “Start” frequency and press【5】【kHz】. * End frequency setting: set end frequency as 20 Hz Press【Menu】key, select “Stop”...
4. Chapter 2 Principle introduction This chapter describes the basic concept of signal shaping and internal operation of the generator, to help users to learn more about the performance and specifications then operate the generator more smoothly. 4.1. Principle diagram of generator Data storage Programmable FLASH...
Amplitude controller is a multiplication digital-analog converter, analog signal that has been filtered is the voltage standard of the digital-analog converter, this standard multiplies amplitude value inputting with the numeric key to make output signal frequency be equal to this inputting value. Offset controller is also a multiplication digital-analog converter, a high-accuracy DC voltage standard of which multiplies offset value inputting with the numeric key to make the output signal offset be equal to this inputting value.
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5.2.2. Period setting Press【Period】key, the light of which will be on, press “s” unit to display present period value, input period value with numeric keys or adjusting knob. Frequency is synthesized in the internal of the generator, and converted to period when inputting and displaying. Limited by the frequency low resolution, for a comparatively long period, the generator could only output some frequency points with long period interval, so the period of actual output signal may be comparatively different from them, which should be under consideration during operations.
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5.2.7. Offset setting Press【Offset】key, the light of which will be on, press “V DC” unit to display present offset value. Input offset value with the numeric keys or adjusting knob for the output signal to generate this DC offset. The relationship between the maximum DC offset and amplitude value should be below formula, if the setting of offset exceeds, the generator will modify it until it is within the limit of the maximum offset value.
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5.2.12. Pulse width setting Select pulse wave and press【Width】key, the “Width” keyboard indicator will be lighted and the generator display current pulse width value, the users may use the numeric keys or knob to input pulse width value, and the generator will output pulse wave with this pulse width set. The pulse width keeps unchanging while the pulse frequency changes.
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5.4.3. Modulation waveform Press【Menu】key and select “Shape” option, set modulation waveform by setting waveform No., the modulation waveform may be any one of the 16 kinds of waveforms listed in the waveforms table. 5.4.4. Modulation source Press【Menu】key, select “Source” option and then set modulation source, there are only two values to choose: 0 and 1.
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5.5.4. Modulation source Press【Menu】key, select “Source” option and then set modulation source, there are only two values to choose: 0 and 1. Set the value as 0 to choose internal modulation source, and set it as 1 to choose external modulation source.
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5.7. Pulse width modulation (PWM) In PWM, the pulse width of the carrier varies with the instantaneous voltage of the modulating signal, and the waveform shape of the carrier must be pulse. Before entering into PWM, users should firstly set the frequency and amplitude of carrier wave under CHA continuous function.
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5.8.1. Hop frequency Press【Menu】key to light “Hop_f” character, and then set hop frequency value. Frequency shift keying is similar with FM whose modulating waveform is square. “hop frequency” is similar with “frequency deviation”, with the difference of, frequency deviation is an offset value that the frequency of carrier wave plus or minus, whose setting range is relational with the frequency of carrier wave, hop frequency could be set arbitrarily within whole frequency range, it has no relationship with carrier frequency.
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5.9.2. Sweeping time Press【Menu】key and select “Time” option and then set sweep time value. Sweep time means the time of sweeping from the start frequency point to the end frequency point. The sweep time of every frequency point is the same, so the longer the sweep time is, the more frequency points are swept, the less the step of the frequency point is, and the finer the sweep is.
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5.10.1. Repeated Period Press【Menu】key and select “Period” option, and then set repeated period. Period represents time from the start of one burst to the start of the next one which must be long enough to contain the pulse numbers of setting, as the following formula shows: Repeated period>(Pulse count / Pulse frequency) If the repeated period setting is too short, the instrument will modify it to the allowable minimum value.
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5.11.1. Keyboard edition The users may use the keyboard to edit and change the user-defined waveforms, follow below steps: 1. select CHA tone, set frequency 1kHz, amplitude 20Vpp. 2. press 【 Shift 】 【 W aveform 】 and select “#” unit, set a waveform sequence number within 11# ~ 15# to recall a user-defined waveform.
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5.11.3. Waveform storage Regardless of downloaded from PC using software or edited using the keyboard, the user-defined waveforms data are stored in volatile memory, they will vanish on turning off the generator. If you want to preserve the waveform for a long time, please store the data. Press【Menu】key, select “Store”...
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If use a U disk to store user-defined waveforms, the generator creates automatically in the U disk corresponding file name WAVE11.ARB~WAVE15.ARB according to waveform sequence numbers, and then store the user-defined waveforms data to corresponding file. If use a U disk to store setting parameters, the generator creates automatically in the U disk corresponding file name SETUP1.SET ~ SETUP5.SET according to memory area numbers, and then store the setting parameters to corresponding file.
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3.15 Output port There are three output ports on the front panel of the instrument, users must not input signal to the output port as a possibility of damaging the instrument. 5.15.1. Signal output port《 《 《 《 CHA》 》 》 》 The signals of CHA are all output from this output port, press 【Output】key to open or close the signal from the output port circularly.
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5.16. Input port There are three input ports on the rear panel of the generator, which could only be used as external signal input port, and not signal output port. 5.16.1. Modulation input port《 《 《 《 Modulation In》 》 》 》 Input external modulation signal under FM, AM, PM and PW M functions.
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Parameter calibration table Default Output Sequence Adjust the calibration value till the output is within the calibration nominal error range value value Zero calibration: output DC voltage -20 ~ 20 mV DC 1000 0 V DC 1000 10 V DC Offset calibration: output DC voltage 9.87 ~ 10.13 V DC Amplitude calibration: output AC voltage 6.928 ~ 7 Vrms...
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5.19.3. Frequency shift keying function Hop frequency: 4 kHz Hop rate: 1 kHz Modulation waveform: square Trigger source: internal 5.19.4. Frequency sweeping function Start frequency: 100H End frequency: 1 kHz Sweep time: Sweep mode: linearity Trigger source: Internal 5.19.5. Burst Repeated period: 10 ms Pulse count: Start phase:...
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6.3. Frequency sweeping characteristics of CHA Sweeping waveform: 16 kinds of waveforms of sine, square, Ramp and so on. Sweeping range: Start and stop frequency can be set arbitrarily Sweeping time: 50 ms to 500 s Sweeping mode: linearity, logarithm Trigger source: internal/external/ single 6.4.
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