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Fluke PM Analog Oscilloscope | eBay
See also section 9. This gives a time-linear voltage across the capacitor; the so- called sawtooth or sweep signal. Printed circuit board lay-out of external trigger unit On the power supply there are many parts that carry dangerous high voltages. It can function on a wide range of LINE input voltages. The signal is high during field 1 and low during field 2. The value of this shift is measured here.
PM 3082 Oscilloscope
This manual also for: For instruments with switchable input impedance it is recommended to make use of this feature. The communication from front unit A4 pm30082 unit A3 occurs via buffer D If a calibration step is not completed succesfully, this is indicated at the end of the autocal procedure.
It is also possible that the rotor makes no contact. Properties expressed in numerical values without tolerances, ranges or limits stated, represent the characteristics of an average instrument.
Field 1 and Field 2 together form one frame. Before soldering, bend the wires through the holes of the solder leads, or wrap the wires around the leads in the form of an open U, or, maintain wiring ridigity by cable clamps or cable lacing.
The balanced input signal for triggering on vertical channels 1,2, 3 or 4 is applied to pin 7 and fluek. If working on the unit under live condition cannot be avoided, it must be done by a qualified technician who is aware of the dangers involved.
Circuit diagram of external trigger unit This diagram shows the RC-branches and regulators N that give the supply voltages for the various circuits.
Fluke PM3082 Service Manual
Use desolder braided wire; ordering code: Also for this the oscilloscope must be pm308 to the nearest Fluke Service Center. Use a termination. Apply a video signal to input P,3082 with an amplitude of about 1V synchronization pulse The trigger sensitivity depends on the amplitude and frequency of the trigger signal.
Before purchasing or ordering replacement parts, check the parts list for value, tolerance, rating and description. Recommended Test Equipment Note: The x1 is switched by control signal PA1X1.
After exchange it must be filled with operating software and calibration data. A range of much finer steps can also be selected. In practice, a low f,uke signal with an amplitude equivalent to 24 divisions must be displayed with no distortion. Set CH1 to 0. Components which are important for the safety of the instrument may only be replaced by components obtained through your local FLUKE organisation.
Page Verify that the delay difference between the two displayed signals is less than 0.
Error Calibration step Input Control signal Output In a sequence. Press the CAL key for a few seconds to start the autocal procedure. Don’t show me this message again. Repeat the above settings and procedure for CH3 and CH4.
The output signal is voltage and is applied to the vertical deflection plates of the CRT. The unit A1 description is split into the following chapters: The external trigger requires a small printed circuit board, a rear panel BNC socket and a coaxial interconnection cable.
Probe Adjust signal is distortion-free and has equal intensity. The timing capacitance consists of C that is always in circuit and C, C that are activated via the switching transistors V and V The display part and power supply must be OK.
These names make it easier to trace a signal going from one circuit diagram to another.