Tektronix 4000 Series, Service Manual

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Adjustment Procedures
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
3- 11
CAUTION.
Keep the digital probe plugged in to the oscilloscope. Unplugging the
probe may result in aborting the test.
When a Sine Signal prompt appears, complete the following steps:
1. Push the Sine front panel button.
2. To ensure that the voltage is in direct mode, push the
1 2
5
1.Ø
lower--bezel
button and select 1.0 .
3.
Push the
CHANNEL SELECT
lower--bezel button, and then ensure that
Channel 5 is selected.
4. Ensure that the red light is illuminated to indicate that the output is on. If
not, push the
ON button.
5. On the oscilloscope, push the OK Do Next Step right--bezel button.
Refer to the next table for common issues encountered during the calibration
procedure.
Problem Things to try
The instrument fails a test Are the channels hooked up properly, routed to the right
channels, and turned on?
Is the signal set to the correct waveform, frequency, and
termination (if applicable to the test)?
Is the output set to ON (the red light will be illuminated)?
If you make a correction or find that everything appears to be
correct, click the
Go back a step button to try the test again .
I can’t set the amplitude to 0 V,
as specified in the prompt
Ground the signal by pushing the lower--bezel
button.
I can’t find the parameters that I
need to set Is the waveform set correctly?
Is the grounding button on? When this is active, you will not
be able to make a channel selection, so in some cases you
might need to temporarily deselect the grounding option
while you make a channel selection.
If you can find the termination settings, click the CHANNEL
SELECT lower--bezel button.
I can’t set the voltage to 625 Hz Set the time marker to 1.6 Ms. This will automatically set the
voltage to 625 Hz.
I can’t set the signal to all
channels If you are unable to set the signal to all channels, try setting
the signal to Channel 1.
Sine Signal
Troubleshooting