7Performance Tests
Agilent U1602B/U1604B User’s and Service Guide 141
U1602B
1 Change the calibrator to 50 ns markers and time base to 50 ns/div.
Adjust the trigger level to obtain a stable display.
2 Measure the following:
• Frequency of 20 MHz — Test limits are 18.69 MHz to 21.51 MHz.
• Period of 50 ns — Test limits are 46.5 ns to 53.5 ns.
U1604B
1 Change the calibrator to 25 ns markers and time base to 10ns/div.
Adjust the trigger level to obtain a stable display.
2 Measure the following:
• Frequency of 40 MHz — Test limits are 38.24 MHz to 41.93 MHz.
• Period of 25 ns — Test limits are 23.85 ns to 26.15 ns.
Trigger Sensitivity Verification Test
This test verifies the trigger sensitivity. In this test, you supply a sine
wave to the instrument and decrease the amplitude of the signal to the
specified levels. Check to see if the oscilloscope is still triggered. You will
then repeat the same procedures for the upper bandwidth limit of each
model.
Test limits for the trigger:
• 5 MHz at 0.8 div
• 20 MHz and 40 MHz at 1 div
Refer to Table 7- 1 for the equipment required for this trigger sensitivity
verification test.
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