Freedom R8100 SERIES, Руководство оператора

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Attenuation
Adjusts the Monitor Port RF input signal attenuation in 2 dB steps from 0 to 62 dB. Select in a list entry
window using the Up/Down (▲▼) keys or spin knob.
Pre-Amplifier
Enables a supplementary input amplifier that extends the sensitivity of the RF Monitor by improving the
S/N ratio for low signal levels. Note: To avoid input overload and erroneous signal strength readings use
the pre-amplifier only under the following conditions:
Input Port Maximum input level for using pre-amplifier
Antenna (Input signal in dBm – Attenuator setting) is equal or less than -40 dBm
RF In/Out (Input signal in dBm – Attenuator setting) is equal or less than -10 dBm
Gen Port
Selects the active port (RF In/Out or Gen Out) for the swept R8100 tracking generator output in a selection
table using the Up/Down (▲▼) keys or spin knob.
Note: If RF Level Offset is enabled, the Gen Port label is cyan-colored indicating that Output Level
amplitudes are adjusted by the Gen Port-specific offset. See section
2.2.8.2 for details.
Monitor Port
Selects the port monitored by the Spectrum Analyzer as either the ANTENNA or the RF In/Out front
panel connector. Choose in a list entry window using the Up/Down (▲▼) keys or spin knob.
Note: If RF Level Offset is enabled, the Mon Port label is cyan-colored indicating that RX measurements
are adjusted by the Mon Port-specific offset. See section
2.2.8.2 for details.
Normalize
Creates a baseline for measuring system under test response by zeroing out the Spectrum Analyzer trace.
When enabled, a visual indicator appears and the trace color changes similar to Figure 2.2.6.3-2. To reset
the baseline after changing any Tracking Generator parameters, select Off and then On again.
Figure 2.2.6.3-2 Normalized Spectrum Analyzer trace
2.2.6.4 Cable Fault Locator mode
The optional Cable Fault Locator mode uses the R8100 Tracking Generator along with FFT analysis to
determine distance to a fault or termination mismatch in RF cables. Pressing the Cable Fault Locator soft
key provides the full screen display shown in Figure 2.2.6.4-1. The Cable Fault Locator is used with an
optional directional coupler or splitter.
Note: Enabling the Cable Fault Locator mode suspends the