Boonton PIM 21 User Manual Manuel d'utilisateur télécharger pdf (Page 10)

10 | PIM 21 User’s Manual

Purpose, Function and Features

PIM comparison for different carrier powers

Functional Description

The PIM 21 generates two continuous wave carriers at up to 1W / 2W each*. These two carriers

are ﬁltered and combined to a single common test port. The frequencies set in the PIM Test Set

depend on the type and can be customized. For references, please see the table in the adden-

dum.

A receiver is also connected to the common test port via another ﬁlter. The receiver is tuned to

the 3rd order Intermodulation product of the two carriers for the measurement of PIM.

Receiver sensitivity is better than -123 dBm, typically -126 dBm.

Functional Block diagram

A microprocessor is used to monitor and control all active modules within the tester. Calibra-

tion tables are stored in non-volatile memory for all critical RF functions i.e. Rx calibration

parameters and excitation carrier power.

* Model Dependent

PIM adjustment chart 1W & 2W vs 20W

-160.00

-150.00

-140.00

-130.00

-120.00

-110.00

-100.00

-90.00

-80.00

PIM Measurement

20 Watt Ref PIM -dBc

1 Watt equivalent PIM -dBc

2Watt equivalent PIM -dBc

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 30 31

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Boonton PIM 21 User Manual Manuel d'utilisateur Page 10