ITC 220 Base Station Transceiver Installation Guide PN 133991 Rev. A
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Figure 27 Typical transmission spectrum EVM (DQPSK)
I.2.1 ADJUST RF POWER OUTPUT
Base station transceivers are rated for 75 W PEP. To achieve this power, radios are calibrated at the factory. If
additional tuning is required, use the TXPOWER command to increase or decrease output power relative to the current
power level.
Notes:
You cannot adjust power above the factory-calibrated setting.
π/4DQPSK is a linear modulation technique.
To adjust RF output power:
1.
Key up the transmitter for full-rate π/4DQPSK modulation using the following commands in XtermW:
STOP
SCHED,DEL,ALL
DSP_MODE,IDLE
DSP_MODE,TEST
L1_TEST,SET,TXFREQ,value
L1_TEST,SET,TXMOD,DQPSK
