UNI-T. ® Select Carrier Waveform After selecting FM modulation, press to select carrier waveform, which can be: sine (default), square, ramp or arbitrary wave. ® Set the Carrier Frequency Please refer to the AM carrier waveform setting. ® Select Modulation Wave Modulation source of device is internal. And modulation wave can be: sine (default), square, rising/falling ramp, arbitrary wave or noise.
UNI-T. ® Set Frequency Deviation The frequency deviation indicates the change between the phases of FM modulated waveform and the phase of carrier wave phase. Settable range of PM frequency deviation is from DC to half of current carrier wave bandwidth, and the default value is kHz. After enabling FM function, the phase deviation can be modified by pressing [Frequented.
UNI-T. 3) Set Waveform and Parameters of Carrier Wave Signal Press [Sine | to select sine wave (default) as carrier waveform. Press to set frequency, enter 10 by numeric keypad, and select parameter unit [kHz]. Press to set amplitude, enter 100 by numeric keypad, and select parameter unit [mV]. 4) Set Frequency Deviation After setting the carrier wave parameters, press |Mode =» frequented frequency setting. Press frequented | and enter 5, select parameter unit | kHz|.
UNI-T. 5) Enable Channel Output Press to enable the channel 1 output quickly. Back light of the CH1 key will be tum on. The FM modulation waveform in oscilloscope is shown below: 4.1.4 Frequency Shift Keying (FSK) In frequency shift keying mode, moving rate between carrier wave frequency and hopping frequency can be set. ® Select FSK Modulation Press -» to enable the FSK function. The device will output modulated waveform with current setting.
UNI-T. ¢ Select Carrier Waveform Press — [Wavelet select carrier waveform, which can be: sine wave (default), square wave, ramp wave or arbitrary wave. ® Set the Carrier Frequency Please refer to the AM carrier waveform setting. eo Select the Modulation Source The device can select internal or external modulation source. After enabling FSK function, the default modulation source is internal. You can change it to external modulation source by multi-functional knob or pressing -+ [External].
UNI-T. ® Set Hop Frequency After enabling FSK function, the default hop frequency is kHz. You can change it by multi-functional knob and direction keys, or pressing [Shopfront, enter numbers, then select corresponding unit. Settable range of hop frequency is determined by carrier wave waveform. The carrier wave frequency setting refers to AM carrier wave frequency setting. ® Set FSK Rate When modulation source is internal, the moving rate between carrier wave frequency and hop frequency can be set.
UNI-T. 3) Set Modulation Rate Press| Rate], enter 200 by numeric keypad and select parameter unit [Hz]. 4) Set Carrier Wave Signal Press to select sine wave (default) as carrier waveform.
UNI-T. 5) Enable Channel Output Press to enable the channel 1 output quickly. Back light of the CH1 key will be turn on. The FSK modulation waveform in oscilloscope is shown as following: 4.2 Output Frequency Sweep Waveform When selecting frequency sweep mode in designated time, the device can generate frequency sweep output for sine wave, square wave, ramp wave and arbitrary wave {except DC) in a linear or logarithmic way. 4.2.
UNI-T. Select Frequency Sweep Waveform After selecting frequency sweep function, press to select frequency sweep carrier waveform, which can be: sine (default), pulse, ramp or arbitrary wave. 4.2.2 Set Starting and Stop Frequency Starting frequency and stop frequency are upper limit and lower limit of frequency sweep. Function/arbitrary waveform generator always sweeps from starting frequency to stop frequency and then returns to starting frequency.
UNI-T. 4.2.3 Frequency Sweep Mode Press to choose the linear or logarithmic way that the generator will use to change output frequency. 4.2.4 Frequency Sweep Time Set the time from starting frequency to stop frequency, which is 1s by default and in the range of 1ms~500s. To change it, you can press in frequency sweep setting interface, input number by numeric keyboard and select corresponding unit. 4.2.
UNI-T. Press to set amplitude, enter 1 by numeric keypad, and select parameter unit [VP. Press to set duty ratio, enter 50 (default) by numeric keypad, and select parameter unit 3) Set Starting/stop Frequency, Frequency Sweep Time Press [Mode | Line | to enter linear frequency sweep: Press nonstarter/ | Storefront, enter 1 by numeric keypad, and select the parameter unit kHz |. The start frequency is kHz by default. Press freestone , enter 50 by numeric keypad, and select the parameter unit [kHz/.
UNI-T. 4) Enable Channel Output Press to enable the channel 1 output quickly. Back light of the CH1 key will be turn on as well. 4.3 Output Arbitrary Wave OUTGO stores 26 types of arbitrary waveform (See the list of built-in arbitrary wave). 4.3.1 Enable Arbitrary Wave Function Press -» to enable arbitrary wave function. The generator will output arbitrary waveform with the current setting.
UNI-T. Chapter 5 Fault Handling Possible faults in use of UTG900 and troubleshooting methods are listed below. If these faults occur, please handle them according to corresponding steps. If they cannot be handled, please contact with your distributor or UNI-T local office, and provide the machine information which can be checked by pressing | Utility | System| —|About |in sequence.
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UNI-T. Appendix B: Performance Index Unless otherwise stated, when the following two conditions are satisfied, all the technical index specifications can be guaranteed. 1. The signal generator is in the calibration cycle and has been calibrated. 2. The signal generator has operated for over 30 minutes within specified temperature All specifications are guaranteed except those marked "typical value".
UNI-T. Output characteristics <10MHz: 1mVpp~10Vpp; (50Q) Amplitude range
UNI-T. Frequency sweep Carrier wave Sine wave, square wave, ramp wave, arbitrary wave Type Linear or logarithmic Frequency sweep time 1ms~500s £ 0.
UNI-T. Appendix C: List of Accessories Model UTG900E A power line up to local standard Standard A ENC-alligator clip cable configuration A BNC cable (1 m) Power adapter: Power voltage 100~240Vrms 50/60Hz 0.4A Output voltage 5VDC Output current 2A Appendix D: Maintenance and Cleaning General maintenance ® Please don't store or place the instrument where LCD is exposed to direct sunlight for a long time. ® To avoid damage to the instrument or connecting line, please don't place it in mist, liquid or solvent.
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