Tektronix TG8000 Service Manual

HD3G7 module adjustment procedures
8. If necessary, s
et the oscilloscope:
Time/Div: 2ns
Volts/Div: 50
mV
Averaging: 16
Record Length: 4000 points
9. On the oscilloscope, select Measurement 3, Pulse-Amplitude, and then
Amplitude to measure the amplitude on the flat part of the long pulse.
10. Right click on the measurement readout, and select Show Statistics and Show
Annotations from the pop-up menu.
11. Note the expected average value, which is indicated by the letter μ, displayed
on the oscilloscope.
12. Press the Clear Data button o n the oscilloscope and wait about 5 seconds
before proceeding to the next step.
13. Record the average value, which is indicated by the letter μ,intheSignal 1
amplitude row, Before adjustment v alue column of the SDI output amplitude
table.
NOTE. If you entered the a ttenuation factor into the scope at t he end of
the amplitude characterization procedure, then the scope will display the
mult
iplication result.
14. Press the TG8000 up (▲)ordown(▼) arrow button, and then press the
Enter button, to activate the adjustment mode.
15. Press the Clear Data button o n the oscilloscope and wait about 5 seconds
before proceeding to the next step.
16. Press the TG8000 up (▲)ordown(▼) arrow button to change the amplitude
to the expected average value calculated in step 11.
17. Repeat steps 15 and 16 until the average attenuation measured value (μ)is
within 1 mV of the corrected attenuation value, and then press the TG8000
ENTER button to save the new amplitude calibration value and exit the
Channel 1 Adjustment mode.
18. Record the new measured attenuation corrected value in the After adjustment
column of the SDI Output Amplitude table. (See Table 11-2.)
19. Press the BACK button to exit Channel 1 Calibration mode.
20. Move the 1 m high-bandwidth cable from the HD3G7 Signal 1 output to
the Signal 2 output.
21. Use the left (◄)orright(►) arrow buttons to select Output 2 to adjust the
Signal 2 output, and then press the ENTER button.
TG8000 Multiformat Test Signal Generator Service Manual 11–7

Tektronix TG8000 Specifications

General

Brand	Tektronix
Model	TG8000
Category	Portable Generator
Language	English