User's Manual
ModuLite Installation Guide SETUP TESTS
Foxcom Wireless Confidential and Proprietary Information
Document No. 43-93-005-05 y 22
Figure 11: Spectrum Analyzer Setup Test
3.4. Uplink Network Test
To carry out the Noise Floor test, the following procedure needs to be carried out.
1. Connect the Spectrum Analyzer to the designated Modular Base Unit uplink port.
Connect 50ohm terminators to the MRC ports, and to all Modular Base Unit uplink ports
except for the tested port (see Figure 12).
2. Extra amplification (25db) is applied between Modular Base Unit and Spectrum
Analyzer in order to measure the noise floor.
3. Set Spectrum Analyzer to:
Video BW 300hz
RBW 1khz
Attenuation 0db
Span 0hz
Center freq. Refer to Product Spec.
Ref level -50dbm
Marker noise ON
4. The noise figure is formulated as: -174 + Gsystem + noise floor
(On the MRC, all unused ports must be terminated with 50ohm load.)
Figure 12: Uplink Network Test
ModuLite
Remote Cabinet
ModuLite
Base Unit
Spectrum
Analyzer
20-48V
20-48V
RF In
Opt
Out
Opt
In
RF
Out
DC
In
DC
In
Uplink
1
2
AMP
RF
Out