AWT PIM-P, Руководство пользователя, Страница: 98 / 110

12-7
PIM-P Analyzer User’s Manual
Copyright AWT-Global, LLC. All rights reserved.
Install the test set-up as shown:

Set the PIM-P to Field Mode

Set frequencies of carrier signal 1 and 2 to the start and end frequency of the
provided frequency band.

Set the power level of each signal to 20 dBm (100mW) – with ALC: ON

Set the Filter bandwidth of the PIM-P to 1.2 kHz (default).

To avoid damage, RF Power of the PIM-P must be OFF

Set Signal Generator to IM3 frequency.

Apply signal to PIM-P (-60dBm to -120dBm)

RSSI should measure the applied power

If the reading is off by more than +/- 0.8 dB but not worse than +/-15 dB,
it may be an indication that receiver is out of calibration. If the
measurement shows a level lower than -125dBm, the receiver does not
detect the frequency at all. It may be asynchronous. In the cases described
above, contact your nearest AWT Service Center.
With the reading in limits, continue procedure:
• Change the frequency of the RF Generator by 2.5 kHz.
• The receiver will filter the signal out and the RSSI reading of PIM-P should be
lower than -125dBm.
With the reading in limits, continue procedure:
• Increase the PIM-P Signal frequency F1 by 1 MHz
• Set Signal Generator to the frequency that correlates to the IM3 product of
frequencies F1 and F2
• Read the RSSI on PIM-P; the value should be equal to +/-1 dB of Signal Generator’s
Power level.
• Repeat the process you are no longer able to increase the signal frequency F1 due to
band restrictions
• If done, set F1 back to start frequency
• Decrease PIM-P Signal frequency F2 by 1 MHz
• Set Signal Generator to Frequency that results for IM3 product of frequencies F1
and F2