Kajizil It follows, then, that the Sync signal transition occurs whenever the output signal crosses the DC Offset voltage, when an offset has been programmed. This hsts fiist the boaid Q numbei followed by fhe maunal numbei. The serivce should be -I- If A14C is changed, repeat steps d and g. NOTE The metal stiffener channel on the deck be- tween the printed circuit boards may be used as circuit ground for all measurements. Set spectrum analyzer controls as follows: The following circuits are included in the service groups: Press Local several 4 or 5 times to quit. Special Functions 60 through 66 display the calibration values correction factors that control output level and dc offset.
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Golrajas Because the -I- 15V and V regulators are referenced to the V supply, they are also disabled. Also check the harmonic distortion performance test.
But if there is a change in phase relationship, the amplifier output voltage will change, correcting the oscillator frequency and restoring phase lock. Will usually ship within 2 business days of receiving cleared payment — opens in a new window or tab.
The width of the positive pulse should decrease to zero, then reset and repeat at a 1 Hz rate TTL levels. Tests for stuck SLC signal. Programmed Amplitude TP4 3Vp-p 2Vdc 1 0Vp-p 6Vdc Using the modify key to increase the programmed voltage by one volt at a time should cause the volt- age at TP4 to increase linearily as well. Place the in Special Test Mode 54 by pressing the following keys: Earlier versions of this instrument, however, differ in design and appearance from those currently being produced.
Calibration FAIL codes through occur if the signal is successfully measured, but the processor determined that the calibration values were outside of recommended limits. Amplitude problems have in the past, been linked to U38, U39, and U40 failures. Do not use a ohm load. Basic Block Diagram of Control Circuits. Printed circuit assemblies are listed in Table The only voltage adjustment is R in the V regulator.
It takes the about 50 milliseconds to make this change. Learn More — opens in a serviice window or tab Any international shipping is paid in part to Pitney Bowes Inc. When a digit is enabled, eight bits of data parallel from the Machine Data Bus are entered in the 8-bit latch by a Write Keyboard Display Data clock signal.
Set the HP B for turn-on conditions, g with zero volts dc offset and all functions off. These signals are centered about ground by a compensating current equal to one-half the signal amplitude. A simplified block diagram of the HP B circuits is shown in Figure sedvice The signals are small currents that are difficult to detect. If the signal is incorrect, troubleshoot the API 2 sub-block and the U19 programming signals.
Note that the voltages should remain the same. Before starting a Signature Analysis test, use the follovwng steps to help you isolate the problem. Press the — minus h to set the to -5 Vdc. Figure Figure A terminal marked with this symbol must be connected to ground in the manner described in the installation operating manual, and before operating the equipment.
Miscellaneous parts are listed in Table following their respective assemblies. The kHz signal is then differentiated to provide a narrow pulse to the Fractional N Phase Comparator. When servicing the amplitude control path, it is imperative that the feedback path be eliminated before troubleshooting begins.
HP 3325B, 3325A User Manual
Golrajas Because the -I- 15V and V regulators are referenced to the V supply, they are also disabled. Also check the harmonic distortion performance test. But if there is a change in phase relationship, the amplifier output voltage will change, correcting the oscillator frequency and restoring phase lock. Will usually ship within 2 business days of receiving cleared payment — opens in a new window or tab. The width of the positive pulse should decrease to zero, then reset and repeat at a 1 Hz rate TTL levels. Tests for stuck SLC signal.
HP 3325B Manuals & User Guides
Download HP 3325B docs - Various electronics service manuals