Motorola DIMETRA MTS 2, Installation, Configuration And Basic Service Manual

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MTS 2 and MTS 4 Installation, Con
fi
guration and Basic Service Manual Transmitter
Transmitter
The Transmit speci
fi
cations for TETRA are listed in Table 14-7 and the Transmit spec-
i
fi
cations for TEDS are listed in Table 14-8 .
In Table 14-7 and Table 14-8 , all speci
fi
cations are observed at RF distribution
system output, unless otherwise stated.
Table 14-7 Transmit Specifications – TETRA
Transmitter Specification Value or Range
Pi/4 DQPSK Transmitted Power (10, 25, 40 Watts
depending on the con
fi
guration) measured at RFDS
antenna port:
Normal Conditions:
Extreme Conditions: 10 W, 25 W, 40 W
+2.0 dB
+3.0/-4.0 dB
Transmitter Power (off/standby) -36 dBm/-40 dBc
Frequency Stability
± 0.007 ppm
Stability with site reference connected
to station and locked to GPS.
Base Radio Power Limits High Power BR: 5W - 80 W
Low Power BR: 2W - 36W
Base Radio Power Limits above are
also applicable for 800 MHz.
Transmitter Power Control 12 dB
Carrier Feedthrough -26 dBc
Transmitter Modulation Accuracy 6% RMS/Burst (30% peak/symbol)
Synchronization 1/4 symbol
Adjacent-channel Power due to Modulation (Normal
Conditions) ± 25 kHz
± 50 kHz
± 75 kHz -60 dBc (800 MHz:
-55 dBc)
-70 dBc (800 MHz:
-65 dBc)
-70 dBc (800 MHz:
-65 dBc)
Adjacent-channel Power due to Modulation
(Extreme Conditions) ± 25 kHz
± 50 kHz
± 75 kHz -50 dBc (800 MHz:
-45 dBc)
-60 dBc (800 MHz:
-55 dBc)
-60 dBc (800 MHz:
-55 dBc)
6802800U74-N September 2009
14-7