User's Manual

ModuLite™ Installation Guide SETUP TESTS
Foxcom Wireless Confidential and Proprietary Information
Document No. 43-93-005-05 X1 21
3.3. Gain/IP3 Test
To carry out the Gain/IP3 Test, the following procedure needs to be carried out.
1. Set the 2 tone signal from the 2 signal generators. RF signals F1 and F2 should be
according to Product Spec.
2. Combine the signals with ZAPD-21 combiner or equivalent.
3. Connect the 2-tone signal to the input of the base (see Figure 11).
4. Set Spectrum Analyzer to:
Video BW 10khz
RBW 100khz
Attenuation 20db
Span 30Mhz
Center freq. Refer to Product Spec.
Ref level 10dbm
5. Connect the RF cable from the Modular Remote Cabinet output to the Spectrum
Analyzer.
6. Measure output Gain/IP3 from all test MRC’s downlink outputs.
7. IP3 is determined by:
IP3= power tone + (power tone power IM3)/2.
ModuLite
Remote Cabinet
ModuLite
Base Unit
RF Combiner
SG1
Spectrum
Analyzer
SG2
20-48V 20-48V
RF
In
Opt
Out
Opt
In
RF
Out
DC
In
DC
In