Adjust The Probe High Frequency Response - Tektronix TDS 520A Service Manual

TDS 520A, 524A, 540A, & 544A Service Manual
H Repeatedly press the side menu button -more- until Pk Pk
appears in the side menu. Press the side menu button Pk Pk.
H Press CLEAR MENU.
2. Confirm that the Probe Compensator signal is within limits for bandwidth:
a. Display and measure the test signal:
H Monitor the CH 1 Pk Pk readout while you set the output of the
generator for a 3.0 V (6 division), 6 MHz reference signal.
H Set the horizontal SCALE to 1 ns and set the frequency of the
generator to 500 MHz.
H Read the measurement results at the CH 1 Pk Pk readout on
screen.
b. Check against limits: CHECK that the CH 1 Pk Pk readout is greater
than or equal to 2.1 V.
3. Disconnect the hookup:
a. Unplug the probe from BNC to probe tip adapter.
b. If substep 2b was passed, the probe adjustment is finished. Reverse
the instructions in Figure 5 5, on page 5 13, to reinstall the retractable
hook probe tip.
c. If substep 2b was not passed, leave the probe tip exposed. Remove
the probe from CH 1 and go on to the next procedure Adjust the
Probe High Frequency Response.
Adjust the Probe High Frequency Response
Do not perform this procedure until you have first completed the procedures
Compensate the Probe and Measure Probe Bandwidth on pages 5 11 and
5 13, respectively.
Do not perform this procedure if you have successfully completed Measure
Probe Bandwidth (probe adjustment is complete).
Equipment Required: One calibration generator (Item 10), one 50 W preci
sion cable (Item 8), one tunnel diode pulser (Item 17), one female to female
adapter (Item 1), one BNC to probe adapter (Item 2), one P6139 10X probe
(Item 16), one 10X attenuator (Item 4), and one small standard screwdriver.
1. Install the test hookup and preset the oscilloscope controls:
a. Access Inner Probe Tip and Adjustment Ports:
H The probe tip should be exposed from the procedure Measure
Probe Bandwidth. If not, follow the instructions in Figure 5 5 on
page 5 13 to expose the probe tip.
Adjustment Procedures
5 15