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General| Brand | HP |
|---|---|
| Model | 3585A |
| Category | Measuring Instruments |
| Language | English |
Emphasizes the importance of grounding the instrument chassis and cabinet to minimize shock hazard.
Warns against operating the instrument in environments with flammable gases or fumes.
Advises operating personnel not to remove covers and to disconnect power before touching internal components.
Recommends that internal service or adjustments should not be attempted alone.
Provides precautions for handling the Cathode-Ray Tube to prevent implosion and injury.
Warns against installing substitute parts or performing unauthorized modifications.
Highlights warnings that precede potentially dangerous procedures, requiring strict adherence.
Specifies the power source requirements for the Model 3585A, including voltage, frequency, and maximum power consumption.
Emphasizes the necessity of grounding the instrument's panel and cabinet using the three-wire power cord for operator safety.
Guides the user through the steps for connecting power, setting voltage selectors, verifying fuses, and initial power-on.
Highlights the spectrum analyzer's front panel design, emphasizing pushbutton keys over traditional analog controls.
Describes the INSTRUMENT PRESET key, its primary purpose as a convenient starting point for measurements.
Explains the use of ENTRY keys, STEP keys, and the Number/Units keyboard for parameter entry and adjustment.
Highlights Semi-Automatic Performance Tests as a desirable alternative for comprehensive specification checks.
Details the procedure to verify frequency accuracy using an external counter with a more accurate reference.
Confirms that the 3585A reads input signal amplitude correctly within specified limits.
Tests the 3585A's adherence to the specification for Reference Level Accuracy, particularly for terminated inputs.
Tests the instrument's input impedance specifications for the 1 MΩ setting, covering resistance and capacitance.
Tests for second and third order IM products at the input, checking against specified limits.
Compares the output of the calibrator to the Tracking Generator's output, subtracting input section flatness.
Checks the HP-IB interface operation to a high level of confidence, providing error definitions for troubleshooting.
Verifies frequency accuracy by using an external counter to check the internal frequency reference.
Tests the instrument's input impedance specifications for the 1 MΩ setting, verifying resistance and capacitance.
Provides a step-by-step procedure for running the Semi-Automatic Performance Tests using the calculator.
Offers troubleshooting steps for program failures encountered during Semi-Automatic Performance Tests.
Details adjustments for the 18V reference, 20KHz oscillator, and 5V supply associated with the low voltage power supplies.
Explains how to adjust the frequency of the 90MHz crystal oscillator on the A21 board for warm-up and external reference absence.
Sets the point where the Oven Oscillator is used as the reference, causing OVEN REF OUT to shut off during warm-up.
Adjusts the frequency of the 3585A oven oscillator, emphasizing the need for a more accurate frequency counter.
Guides through adjustments for CRT intensity, focus, astigmatism, and high voltage power supply settings.
Details adjustments for CRT graphics, including X/Y position, gain, and retrace line straightening.
Explains how to adjust CRT alphanumeric alignment for characters relative to graticule lines and horizontal positioning.
Provides procedures for adjusting Fractional N parameters using a DVM and checking voltage readings.
Guides through adjustments for the Step Loop, including bias voltage, oscillator coil adjustment, and frequency checks.
Details adjustments for the First LO VTO and Sum Loop, involving frequency counters, voltage checks, and loop tuning.
Explains adjustments for the video filter and A/D converter, including setting marker readings and removing shorting clips.
Covers adjustments for the Log Amplifier and 30kHz filter, involving synthesizer output, marker readings, and inductor adjustments.
Provides a procedure for adjusting the Log Amp linearity, noting the effect of card nest shielding and resistor adjustments.
Details the adjustment of the Reference Level DC Offset, involving DVM measurements and iterative adjustments.
Explains I.F. filter adjustments, requiring non-metallic tools and involving synthesizer output and marker amplitude readings.
Guides through adjusting the fifth crystal stage, involving trace symmetry and reference level settings.
Details adjustments for the fourth crystal stage, focusing on trace approximation and symmetry.
Explains adjustments for the fourth LC stage, ensuring a straight horizontal trace and symmetry about the marker.
Guides through adjustments for the fifth LC stage, focusing on trace approximation and symmetry.
Provides procedures for adjusting the third crystal stage, emphasizing trace approximation and symmetry.
Details adjustments for the third LC stage, ensuring a straight horizontal trace and symmetry about the marker.
Guides through adjustments for the second crystal stage, focusing on trace approximation and symmetry.
Provides procedures for adjusting the first crystal stage, ensuring trace approximation and symmetry.
Details adjustments for the second LC stage, ensuring a straight horizontal trace and symmetry about the marker.
Guides through adjustments for the first LC stage, focusing on trace approximation and symmetry.
Explains final IF filter adjustments, requiring synthesizer output and marker amplitude readings.
Covers adjustments for the 16dB amplifier, involving tracking generator output, attenuators, and offset marker readings.
Details the adjustment of calibrator symmetry by replacing a cable and adjusting the CAL SYMMETRY control.
Guides through flatness adjustments for the input section, using continuous entry control and specific components for trace variation.
Explains how to adjust the RANGE UP THRESHOLD to illuminate the OVERLOAD light.
Guides the adjustment of the Range Down Threshold to ensure the voltmeter reading goes to a low logic level.
Details adjusting the top of screen amplitude for a marker reading of -25.00dBm.
Explains the calibrator level adjustment, emphasizing the importance of source amplitude accuracy for precise results.
Covers the 1 MΩ amplitude adjustment, involving synthesizer output, termination, and marker amplitude readings.
Guides through the 1 MΩ flatness adjustment, using continuous entry control and testing A/B trace overlap.
Explains the 1 MΩ input capacitance adjustment, involving trace overlap and removing inputs.
Tests electrical isolation from ground loops by checking resistance between the input section and chassis.
Guides through tracking generator adjustments, involving digital voltmeter readings and amplitude response flatness.
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