Abbreviations In Fault Finding Charts - Nokia Mobile Phones NSE-5 Series Service Manual

NSE–5
Troubleshooting

Abbreviations in fault finding charts

BB Baseband
DC Direct Current
ESD Electro Static Dicharge
f: Frequency of signal (measured with spectrum analyzer)
LO Local Oscillator
P: Power of signal in desibels (dB) (measured with spectrum analyzer)
PA Power Amplifier
PCB Printed Circuit Board
PLL Phase Locked Loop
RF Radio Frequency
RX Receiver
T Time between pulses
TX Transmitter
UHF Ultra High Frequency
V: Voltage of signal (measured with oscilloscope)
VCO Voltage controlled oscillator
VHF Very High Frequency
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Figure 2. PCB Bottom view
PAMS
Technical Documentation
Issue 1 07/99