Tektronix 1730 Series, Инструкция по эксплуатации

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1730–Series Checks and Adjustments
5–21
a. Connect a 50
Ω
precision cable and 50 to 75
Ω
minimum loss pad from
the leveled sine wave to the CH–A input. Teminate the loop–through in
75
Ω
.
b. Select EXT REF.
c. Set the leveled sine wave generator to 50 kHz (reference frequency) and
set the output amplitude for a 100 IRE (0.7 V) display amplitude.
d. CHECK – the flat response using the 50 kHz response as a reference.
Changing the frequency of the sine wave generator, check that the
response is within
±
2% from 250 kHz to 6 MHz.
e. Change the 1730–Series VERTICAL GAIN to X5.
f. Set the leveled sine wave generator to 50 kHz and set the output
amplitude for a 100 IRE (0.7 V) display amplitude.
g. CHECK – flat response using the 50 kHz response as a reference.
Check that the amplitude is 100 IRE (0.7 V)
±
5% from 250 kHz to
6 MHz.
h. Move leveled sine wave generator output to CH–B and terminate the
remaining side of the loop–through INPUT with a 75
W
termination.
i. Select CH–B INPUT.
j. CHECK – flat response using the 50 kHz response as a reference.
Check that the amplitude is 100 IRE (0.7 V)
±
5% from 250 kHz to
6 MHz.
k. Turn off X5 VERTICAL GAIN.
l. CHECK – the flat response using the 50 kHz response as a reference.
Check that the response is within
±
2% from 250 kHz to 6 MHz.
14. Check PIX MON OUT Frequency Response
REQUIREMENT – PIX MON OUT Frequency Response with a 50 kHz
reference; within 3% from 250 kHz to 6MHz.
a. Connect a coaxial cable to the + input on the Peak To Peak Detector
Amplifier and connect the other end of the cable to the Peak to Peak
Detector Head.
b. Press the + Input button on the Peak To Peak Detector Amplifier.
c. Adjust the Peak to Peak Detector Amp Input Level control fully
clockwise.