User Guide

NHM-8NX
Troubleshooting Instructions PAMS Technical Documentation
Page 36 ãNokia Corporation Issue 1 05/02
Figure 17: VPCTRL_G & TXC
Fault finding in modulation
The following plots show different situations of TX IQ measurements. Depending on the
time the modulation may cause the signal to look differently.
TX I/Q waveforms
Yellow trace: Vpctrl_G @ power level 5, ch37
Pink trace: TXC GSM900 band
Pink trace: TXQP Blue trace: TXIP - All 1 Pink trace: TXQP Blu etrace: TXIP - Random
Pink trace: TXQP Blue trace: TXIP - All 1 (Zoom In)
Pink trace: TXQP Blu etrace: TXIP - Random ( Zo
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