Performance Tests
7
Agilent U1602A/U1604A User’s and Service Guide
163
Bandwidth Verification Test
This test verifies bandwidth of the instrument. In this test, you will use an
oscilloscope calibrator to output a sine wave signal at 1 MHz and
bandwidth frequency (20 MHz and 40 MHz). You will use the peak- to- peak
voltage to verify the bandwidth response of the instrument.
U1602A
Test limits
¡
–3 dB at 20 MHz (for all channels)
U1604A
Test limits
¡
–3 dB at 40 MHz (for all channels)
Refer to Table 7- 1 for the equipment required for this bandwidth
verification test.
1
Connect the calibrator output through a 50
Ω
feedthrough termination
to input channel 1 of the instrument.
2
Set up the instrument.
•
Set the time base to 500 ns/div.
•
Set the Volts/Div for channel 1 to 200 mV/div.
•
Select User mode of the instrument, then press F2 softkey for
Acquire mode.
•
Press F1 to select Average acquisition mode. Turn the rotary switch
to select averaging number of 8 (Avg 8). Press the rotary switch to
set the setting.
3
Set the calibrator to "Level Sine" and OPR/STBY to "OPR". Set the
calibrator to 1 MHz and six divisions of amplitude.
N O T E
The oscilloscope calibrator is supplied with 2 or more coaxial cables N (m), BNC (m), 1
meter long and Fluke P/N 686318.
