Lna Output Adjustment; Figure 2-9 Lna Output Level Test Set Up - Andrew 2400 Operation And Maintenance Manual

385700-4006-006
Center Frequency
Span
RBW
VBW
Ref. Level
Attach a 10 dB, 2 watt or greater, power attenuator to the spectrum analyzer RF input.
The direction control signal characteristics required will depend on the interface option
installed. The direction must be set to the NORMAL state.
Direction Control = Forward
Signal
Generator
2.5.2.3.2

LNA Output Adjustment

Disconnect the pilot tone signal from the LNA module J5 Aux RF IN port. Terminate the pilot
tone input port with a 50 ohm termination.
Connect the signal generator to J3 of the DLA as shown in Figure 2-9 LNA Output Level Test
Set Up.
Adjust R1 so that the signal at J3 at 2467 MHz is the desired level ±0.5 dB. The maximum
output value for the LNA channel is +5 dBm.
With the LNA output set, go to the next step to set the LNA output alarm adjustment.
Document use is restricted to that described on cover
2467 MHz
2 MHz
30 KHz
3 Hz
as required
Distribution Line
J3
Amplifier Assembly

Figure 2-9 LNA Output Level Test Set Up

INSTALLATION
Power Meter
or
J4
Spectrum
Analyzer
≥
10 dB
power
attenuator
2-13