Performance Tests
CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual
4-79
b. Match the trigger source to the channel selected: Press the Trigger
SOURCE button until the source that corresponds to the channel you are
to confirm is on.
c. Set the vertical scale: Set the vertical SCALE that corresponds to the
channel you are to confirm to one of the settings listed in Table 4--7 not
yet checked. (Start with the 100 mV setting).
d. Set the triggering coupling: Touch the Coupling DC button.
Table 4- 7: Analog bandwidth
Test frequency Test frequency Test frequency Test frequency Limits
Vertical
scale
e
erence
amplitude
(6 di visions)
Horizontal
scale
TDS7704B
CSA7404B
TDS7404B
TDS7254B TDS7154B -3 dB Limits
2mV 12 mV 1ns 1GHz 1GHz 1GHz 1GHz ≥8.48 mV
5mV 30 mV 1ns 1.25 GHz 1.25 GHz 1.25 GHz 1.25 GHz ≥21.2 mV
10 mV 60 mV 1ns 7GHz 4GHz 2.5 GHz 1.5 GHz ≥42.4 mV
20 mV 120 mV 1ns 7GHz 4GHz 2.5 GHz 1.5 GHz ≥84.8 mV
50 mV 300 mV 1ns 7GHz 4GHz 2.5 GHz 1.5 GHz ≥212 mV
100 mV 600 mV 1ns 7GHz 4GHz 2.5 GHz 1.5 GHz ≥424 mV
200 mV 1.2 V 1ns 7GHz 4GHz 2.5 GHz 1.5 GHz ≥848 mV
500 mV 3V
1
1ns 7GHz 4GHz 2.5 GHz 1.5 GHz ≥2.12 V
1
1V 5V
1
1ns 7GHz 4GHz 2.5 GHz 1.5 GHz ≥3.535 V
1
1
If your generator cannot output the required amplitude, determine its maximum output at the Test frequency, and use this for
the reference amplitude. The -3 db limit can be calculated as: 0.707 × reference amplitude.
e. Display the test signal: Do the following subparts to first display the
reference signal and then the test signal.
H From the button bar touch MEAS; then select the Time tab.
H Touch the Freq button to measure the frequency of the current
channel.
H Select the Ampl tab. Touch the Pk-Pk button.
H Touch the Statistics button, then touch the Mean button.
H Touch Close button.
H Set the generator output so the CHx Pk-Pk mean readout equals the
reference amplitude in Table 4--7 that corresponds to the vertical
scale set in substep c.
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