Elenco Precision Wide Band Signal Generator Model SG-9000 Operation Manual
CONTENTS 1. Specifications 1 2. Operation 3 3.
CIRCUIT DIAGRAM -9-
SPECIFICATIONS Frequency Range: A 100kHz - 300kHz B 300kHz - 1,000kHz C 1MHz - 3.2MHz D 3.0MHz - 10MHz E 10MHz - 35MHz F 32MHz - 150MHz (up to 450MHz on third-harmonics) Frequency Accuracy: ±3% RF Output: 100mV rms Approx. (up to 35MHz) Output Control: HIGH-LOW switch and fine adjuster Modulation: Internal 1kHz External 50Hz - 20kHz, at less than 1V rms. Audio Output: 1kHz, min.
1. FREQUENCY Dial: Sets the RF output frequency in the range selected by the FREQ RANGE switch. 2. FREQ RANGE Switch: Has six positions for RF output frequency range. 3. XTAL Socket: For insertion of quartz crystal, 1 - 15MHz, in Type HC-6/u holder. 4. PWR Switch: For turning on the AC power. 5. PILOT Lamp: Indicates when AC power is on. 6. MODE Switch: EXT MOD: For modulation of carrier with an external source. INT MOD: Use of internal 1kHz for modulation of external circuit testing.
OPERATION 7. AF Output, 1kHz 1. Preparation Control settings: Mode switch at INT. MOD. position. FREQ RANGE switch at “F” and frequency dial at 100MHz. Connect the leads from the OUTPUT to the test circuit. potentiometer, 100kW - 1MW, to lower the voltage. (1) Set the POWER switch to the OFF position. (2) Connect the AC plug to the AC supply. Use an external 8.
3. Modulated Carrier, Internal Source Set the mode switch at INT. MOD. By tuning the receiver to the generator frequency, or vice-versa, an audio tone will be heard in the loudspeaker. An audio voltmeter should be connected across the speaker terminals when aligning the internal circuits. A dummy resistor with suitable power rating can be used in place of the moving coil.
