User Guide

PAMS Technical Documentation 6 - Troubleshooting
NPL-1
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Yes
Oscilloscope
C702 CONT1 Vdc = 2.78 Volt No Check:
C701 CONT2 Vdc = 0 Volt Mjoelner Serial Interface
C703 CONT3 Vdc = 0 Volt Mjoelner
C803 VBD Vdc = 2.78 Volt
Yes
Spectrum analyzer No Check
R819 in TX_1800 P>= -3 dBm, 1880 MHz DCS/PCS Balun T701
Mjoelner
Yes Synthesizer
Use Phoenix to select
TX_Data Type: Random
TX Power Level: 5
Yes
Spectrum analyzer Check PA N801
L801 B2_in (PA N801
Pout_DCS)
No Check Power Loop
L801,V801
Power = +22 dBm, 1880 MHz Check TXC
Yes
Spectrum analyzer Check
RF-connector No Directional Coupler (L801)
Pout =+20 dBm, 1880 MHz Antenna Switch (Z601)
Yes
PCS TX
OK