Agilent Technologies AGILENT U2761A Wartungshandbuch PDF herunterladen (Seite 40)

3 Calibration

26 U2761A Service Guide

Amplitude Flatness (0 dB Range) Verification

This procedure verifies the high frequency AC amplitude

flatness above 100 kHz on the 0 dB range relative to 1 kHz.

1 Connect the power meter to measure the output

amplitude of the U2761A as shown in Figure 3- 4.

2 Set the U2761A based on the following.

• Load impedance: 50 Ω

• Function: Sine wave

• Frequency: 100 kHz

• Amplitude: 350 mVrms (+3.892 dBm)

3 Set the power meter Filter Mode to Auto if you have

previously set it to Manual.

4 On the power meter, use the Relative Power function to set

the current reading as the reference value. This will allow

you to compare future measurement result in dB.

5 Set the power meter Offset to Offset

0dB

value previously

calculated in Table 3- 6. The power meter will directly

read the flatness error specification relative to 1 kHz.

6 Set the U2761A to each output listed in the Table 3- 8.

Measure the output amplitude using the power meter (the

relative measurement in dB).

7 Compare the measured output with the test limits shown

in the Table 3- 8.

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 66 67

Keine Kommentare

Agilent Technologies AGILENT U2761A Wartungshandbuch Seite 40