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dc2461af

DEMO MANUAL DC2461A

Quick stArt proceDure

notes on test eQuipMent AnD setup

• Highperformancesignalgeneratorswithlowharmonic

outputs should be used for 2-tone measurements.

Otherwise, low pass filters at the signal generator

outputs should be used to suppress harmonics.

• High quality combiners should be used to present

a broadband 50Ω termination on all ports as well

as provide good port-to-port isolation. Adding at-

tenuator pads further improves source isolation and

helps prevent the signal generators from producing

intermodulation products.

• Spectrum analyzers can produce significant internal

distortion products if they are overdriven. Generally,

spectrum analyzers are designed to operate at their

best with about –30dBm to –40dBm at their input. The

spectrum analyzer’s input attenuation setting should

be used to avoid saturating the instrument.

• Set the spectrum analyzer’s input attenuation depend-

ing on the spectrum analyzer used.

• Before performing measurements on the DUT, the

systemperformanceshouldbeevaluatedtoensurethat

a clean input signal is obtained and that the spectrum

analyzer’s internal distortion is minimized.

1. Connect all test equipment as shown in Figure 2.

2. Set the power supply output voltage to 3.3V, and set

the current limit to 200mA.

THE EN TURRET TO ENSURE THAT THE PART DOES

NOT GET DAMAGED. ALSO, REMOVE POWER FROM

EN TURRET BEFORE REMOVING POWER FROM THE

4. Connect the EN turret to the power supply.

5. Set the LO signal generator to provide a 5560MHz CW

signal at about 0dBm to the demo board’s LO port.

6. Set the RF signal generators to provide one 5799MHz

CW signal and one 5801MHz CW signal. The signals

should be applied to the 2-way combiner. The output

of the combiner should be applied to the demo board’s

RF input port. The two tones should be set to –5dBm

each at the mixer’s RF input port.

7. Setthespectrumanalyzer’scenterfrequencyto240MHz

with a span of 10MHz.

8. Perform various measurements

(Conversion Gain, OIP3, LO leakage, etc.)