Specifications

Sensitivity

The PNA should be located as closely as possible to the test antenna to minimize the

RF cable lengths. The measurement sensitivity of the PNA must be degraded by the

insertion loss of the RF cable(s) to determine the system measurement sensitivity needed.

Now, determine the sensitivity required of the PNA

Sensitivity = P

AUT

–DR–S/N–L

where P

AUT

= Power at the output of the AUT (dBm)

DR = Required dynamic range (dB)

S/N = Signal-to-noise ratio determined above (dB)

 L=CableLoss(dB)fromAUTtoPNAinput

Figure 16. Receive site configuration without external mixing.

Note

This equation assumes the simplest antenna

system with no remote mixing. See Figure 10.

Test

Reference

Receiver #1 Receiver #2

P(AUT)

PNA Option 200,

PNA-X Option 200, 020