Freedom R8100 SERIES, Operator'S Manual

Page: 180 / 255

180
Figure 2.2.7.9.1-2 Main screen in Monitor mode after pressing the P25 II soft key
2.2.7.9.1.1 RF Zone
Input Level (RF Zone display)
Input Lvl displays the average power in the logical channel under test.
Note: When the RF input power on the RF In/Out port is above +20 dBm (100 mW), the R8100 utilizes a
broadband power detector for the measurement. The “Input Lvl” field in the RF Zone changes to “Watt
Meter” to indicate this measurement mode. For best accuracy disable the Pre-amplifier in Monitor Mode,
and set the Gen Port in Generate Mode to RF In/Out.
Note: The TDMA transmission alternates between a used and unused time slot so the RF Zone field will
switch between the two. An unused slot has no power, so the display will flash between “Input Lvl” and
“Watt Meter”. In this condition the Input Level reading should be used since null slots can cause the Watt
Meter indication to read approximately 3 dB less than the power in the used slots.
Freq Error (RF Zone display)
Freq Error displays the frequency difference of the received transmission carrier minus the R8100 Monitor
Frequency.