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Summary of Contents for VOLTEQ SFG1002
- Page 1 FUNCTION GENERATOR USER MANUAL FUNCTION GENERATOR...
- Page 2 It is particularly suitable for teachings, scientific researching and experimenting of electronic and pulse circuits. ⅠMain technical Features 1. Frequency range: 0.1Hz-2MHz (SFG1002) 0.1Hz-5MHz (SFG1005) 0.1Hz-10MHz (SFG1010) 0.1Hz-15MHz (SFG1015) 2.
- Page 3 Distortion :< 1% (10Hz-100KHz) Frequency response: 0.1Hz-100 KHz ≤±0.5dB 100 KHz-5MHz ≤±1dB (SFG1005) 100 KHz-2MHz ≤±1dB (SFG1002) 5. TTL / CMOS output Level:TTL Pulse low level is no more than 0.4V, high level is no less than 3.5V. Rising time: no more than 100ns 6.
- Page 4 Input signal: DC-1KHz 9. Frequency meter Measuring range: 1Hz-20MHz Input Impedance: no less than 1 MΩ/20pF Sensitivity: 100mVrms The maximum input: 150V (AC+DC) with attenuator Input attenuation: 20dB Measurement error: ≤0.003%±1digit 10. The scope of adaptation of power Voltage: 220V±10 %( 110V±10%) Frequency: 50Hz±2Hz Power: 10W (Optional) 11.
- Page 5 12. Dimension (L ×W×H):310×230×90mm 13. Weight :About2-3Kg ⅡPrinciple The Block diagram of the apparatus is shown as Figure 1 Ω Figure 1...
- Page 6 1．Constant current source control circuit, This part of the circuit is shown as Figure 2, positive V of transistor is offset due to the closed-loop of integrated circuits， if it is ignored as block offset voltage I DOWN 2. Square-wave generator, This is a constant current source controlled with triangular wave - square-wave generator, in Figure 3.
- Page 7 (Figure 2)
- Page 8 (Figure 3) 3. PA (Power Amplifiers) In order to guarantee a very high slew rate and good stability, power amplifier circuit used as the dual-channel, the entire amplifier circuit has the inverted phase features.
- Page 9 (Figure4) 4．Digital frequency meter The circuit is made up of broadband amplifier, square-wave shaper, microcontroller, LED display, etc. When the frequency is working at the “External measurement" state, the external signal was sent to counter to count after amplifying and regulation, finally displayed on the LED digital tube. While internal measurement, the signal entered into the counter directly, counting the time of gates, LED tube decimal point location and Hz or KHz are determined by the CPU...
- Page 10 (Figure5) 5．Power This instrument use three groups of±23，±17，±5 powers。 The ±17 is the main regulation power supply; ±5 is obtained by three-regulator integrated circuits 7805 for the use of frequency, ±23 used as power amplifier. Ⅲ Structural Features The instrument adopts the all-metal chassis with solid structure, pasted plastic panels, new beautiful appearance。...
- Page 11 placed on the apparent position. When the equipment needs to be repaired, you can remove the two fastening screws of the back plate, to unload the upper and lower plate. Ⅳ Instruction of use and maintenance 1、Panel sign and Function Description; See as table 1 and Figure 6 (Figure6)
- Page 12 Panel sign and function Description Serial panel sign name function number press switch, power connection, Power power switch apparatus is on working condition 1) selection of output waveform 2) Coordinate with the SYM, INV, you Function Waveform choice could get the positive and negative sawtooth wave and pulse wave Frequency-selective Frequency-selective switch and“8”...
- Page 13 inner and outer measuring frequency FREQ Frequency regulation (press) signal tuner External input frequency Outer measuring frequency attenuation attenuation 20dB EXT-20dB selection, while pressing signal coordinates with 3 select attenuated 20dB working frequencies. While measuring the outside frequency ,the CORNTER Counter input signal entered from here Pulled out the knob, you can change the...
- Page 14 The output waveform as the TTL / TTL/CMOS TTL/CMOS output CMOS pulse can be used as synchronous signals Pulled out the knob, you could get PULL TTL pulse TTL CMOS TTL,CMOS Regulation It is promoted CMOS pulse and its LEVEL range could be adjusted The output waveform is output from OUT PUT...
- Page 15 2. Maintenance and calibration. The apparatus could work continuously under the required conditions, but in order to guarantee good performance, we proposed to correct every three months. The order of correction is as follows: 1) Adjustment of sine wave distortion Symmetry, the DC bias and modulation control switch are not pulled out, placed the frequency multiplier to "1K", the frequency display as 5Khz or 2KHz, slowly adjust the potentiometer RP105, RP112, RP113 so that the distortion is minimum, repeat the above work several times ,sometimes...
- Page 16 Set the frequency meter as “EXT” state; connect the standard signal source 20MHz output to external counter, adjust C214 to display as 20000.0 KHz. 4) Frequency sensitivity adjustment The sine-wave signal which the output range of signal source is 100mVrms and frequency is 20MHz is connected to external counter, the gate time is set to0.01s;...
- Page 17 Ⅴ Preparation of Annex Manual Cable （50Ω test line） Cable （BNC line） Fuse Power line...
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