Tektronix CSA7404B Service Manual

Performance Tests
CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual
4- 135
Follow this procedure to make the optical system bandwidth checks:
Table 4- 16: O/E system bandwidth
Instrument Bandwidth - 3 dB (- 6 dBm on readout)
CSA7404B 2.4 GHz
Figure 4- 45: Proper positioning of the impulse
11. Turn on a magnitude FFT of the optical impulse [the Impulse Response (or
Frequency Response) of the system] (Refer to Figure 4--45):
a. From the tool bar, touch Math and select the Math 1 tab.
b. Press the Spectral Analysis Setup button and select the Create tab.
c. Press the Magnitude button and then the Channel 1 buttontocreatea
magnitude FFT math waveform.
d. From the Window Type drop down list, select Rectangular.
e. Select the Mag tab.
f. Press the Scale dBm button.
g. Press Freq Span and use the general purpose knobs to adjust the
frequency span to 5 GHz. Set the Center Frequency to 2.5 GHz (a
frequency span of 4 GHz and center frequency of 2 GHz are also
acceptable).
h. Set the Ref Level to -- 5 . 2 d B m and press Apply.
i. From the tool bar, touch Math and select the Math 1 tab.
j. Set the Math Scale to 3 dBm per division.
Procedure

Tektronix CSA7404B Specifications

General

Brand	Tektronix
Model	CSA7404B
Category	Measuring Instruments
Language	English