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Hp B Pdf User Manuals. View online or download Hp B Calibration Manual. Agilent technologies HP B Pdf User Manuals. View online or download Agilent technologies HP B Operating Manual. Refurbished Agilent / Hewlett Packard B Synthesizer/Function Generator with Frequency Accuracy – at Test Equipment Depot – PreOwned Refurbished.

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The Mixer circuits are covered by two shields, each consisting of a flat cover and an extrusion. The revision code is 4 digits, two for the year since and two for the week.

Go to Service Group F. Keyboard and Display Block Diagram. Figure is a simplified illustration of this.

To compensate for this increased charge, the discharge current from the bias source is adjusted by means of Analog Manuxl Interpolation API information from the fractional N control 1C. Set the frequency to 5 Most of the service information is divided into service groups, which are identified alphabetically. From the mixer, a MHz signal is supplied to the function circuits, the output am- plifier, the attenuator, and on to the instrument output.

3325B Synthesizer/Function Generator

Control Circuits Service Group C. Adjust the counter to measure frequency 20 MHz. DC Offset and Amplitude T roubleshooting. Amplitude Modulator While in continuous sweep mode, check for the presence of pulses at the input pins, output pins, and clock pins of A21U14 and A21U Remove the 2 screws from the top of the frame beneath the trim strip and the 3 corresponding screws from the bottom side of the front frame.


This addition takes place every 10 microseconds once for each cycle of the kHZ reference. Do not use a 50 fl feed through termina- tion. Frequency Accuracy Check adjustment Problems in the Amplitude and Offset control circuits are most easily located by measuring dc voltages.

Direct current power line. Following repair of some circuits, certain adjustment procedures must be performed to assure proper operation of the instrument. The voltages shown on the schematic are measured with the instrument in the Preset state. Basic Troubleshooting Procedure 8-A-l. If any of the pulses are not present, check the fractional-N chip U19 mnual the proper signals.

Our service centers may be able to perform calibration if no repair parts are needed, but no other support from Agilent is available. After blinking the LEDs, testing continues with the next test. The output pulse is derived from the bias pulse issued by the fractional N control 1C.

Only part of the problem is solved, however, because if the PLL were to continue operating in this manner, the phase comparator output would continue to increase beyond practical limits. The Output Amplifier is an inverting operational amplifier that is designed for wide frequency response and low distortion.

On the display, the number for A appears on the left side and the number for B appears on the right side. Integrated Phase Noise Suspect A Proceed to step o. If this signal is not correct, the trouble is ahead of the SINE test point.

The Start Address Latch value determines the length of the waveform.

HP B Function Generator | Chris Meyer – Mentions

Voltage at A3U 1 8 pin 6 should be low, pin 9 should be low. Save-recall memory includes 10 non-volatile memory locations, for simple and rapid access to frequently used test setups. Output Amplifier Service Group K. Repeat the maunal jitter measurements of Steps d 2 uid f, adjusting RAMP ADJ as necessary to reduce the jitter to 60p,s or for the best compromise between the two.


The Mixer circuits are diagrammed in Figure Power Supply Will not sweep frequency. Check that the -I- 5V isolated supply manal the A26 assembly is present.

Agilent Technologies HP 3325B Manuals

Special Functions 60 through 66 display the calibration values correction factors that control output level and dc offset. Square Wave Symmetry Check adjustment 5. Immediately after a sample, the bias current source is turned on to discharge the integrator capacitor to the level it held before the phase comparator current was allowed to charge it. If the proper signal is not present hl U36 pin 9, trace the signal back through U32, which is a -r 10 counter.

Set the frequency to 1 kHz, function to sine, and observe the waveform below. Voltages are meas- ured with A21J18A still disconnected. However, if the loop is not locked, this voltage will vary.

Do not use a ohm load. Prior to initiating Special Function 60 to 66, the function being measured must be internally calibrated to obtain valid numbers. Alternating current power line. Set the to 5.