Agilent Technologies 8935 Series Especificações descarregar pdf (Página 191)

190 Chapter 8

Performance Tests

RF Generator Level Accuracy Performance Test 5

RF Generator Level Accuracy

Performance Test 5

The purpose of this test is to verify that the Test Set meets the

specification limits in PTR (Performance Test Record) Table 9-5, “RF

Generator Level Accuracy Test 5 Record,” on page 242. Using a

measuring receiver and sensor module, at several frequencies up to 1

GHz the Test Set is set to generate levels between

−10 and 125 dBm (in

5 dB steps) at it’s DUPLEX OUT connector. The level is measured with

the tuned RF level feature of the measuring receiver. At each frequency

the measuring receiver connection is moved to the RF IN/OUT and the

level measured from -40 to

−125 dBm. As the test proceeds you may be

required to recalibrate the measuring receiver.

To extend the measurement frequency to 2 GHz the second method uses

a microwave converter and amplifier to extend the measurement range

(see Figure 8-10 on page 192).

Figure 8-9 Setup 1 for Measurements to 1 GHz

Procedure 1

Steps 1 to 5 in the following procedure apply to Setup 1 shown in Figure

8-9 on page 190.

1. Before connecting the test set to the measuring receiver:

a. Reset the instrument.

b. Zero and calibrate the sensor module.

NOTE

Make sure the sensor module’s calibration data is entered into the

measuring receiver.

2. Connect the equipment as shown in Setup 1 whether intending to

measure frequencies to 1 GHz or 2 GHz.

DUPLEX OUT

Measuring Receiver

INPUT 50Ω

SENSOR

RF IN/OUT

Sensor Module

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