AWT PIM-P, Руководство пользователя, Страница: 50 / 110

7-24
PIM-P Analyzer User’s Manual
Copyright AWT-Global, LLC. All rights reserved.
7.3.2.5 BAR Graph G/R
Advanced Mode Only
The Bar Graph’s green/red threshold is -153dBc by
default. The switch from green to red is an optical indicator
if a DUT is within limits or if it exceeds them. PIM
measurement values higher than the set threshold can
provide an audible indicator. Obviously Audio has
to be switched on in the Field Mode screen.
Maxhold is an important feature which holds the
maximum value during PIM measurements. In this
example the maxhold value is -147 dBc.
Bar Graph g/r: -60dBc to -180dBc in 1dB
increments
Default: -153 dBc
7.3.2.6 Precision Tx Levels
Advanced Mode Only
ALC (Auto Level Control) provides an extra boost of
Tx Signal accuracy. When measuring PIM, two RF
carrier signals are combined and transmitted into a
passive RF component (DUT). Depending on its quality,
the DUT generates more or less intermodulation energy. For best measurement accuracy
the injected signals should closely match their power levels. With ALC: ON, the PIM-P
will synchronize these power levels perfectly. Increased accuracy costs a bit more time.
Setting Tx power levels with will 0.05 to 0.2 sec longer than with ALC: OFF. With the
exception of high volume production, this additional time is not an issue, so it is
recommended to always leave ALC ON.
Default: ON