4RF Aprisa SR+ - Transmitter

22 | Specifications
Aprisa SR+ Product Description
Transmitter
Average Power output
64 QAM
0.01 to 1.25 W (+10 to +34 dBm, in 1 dB steps)
Note: The Peak Envelope Power
(PEP) at maximum set power
level is +41 dBm.
16 QAM
0.01 to 2.5 W (+10 to +35 dBm, in 1 dB steps)
QPSK
0.01 to 5.0 W (+10 to +37 dBm, in 1 dB steps)
4-CPFSK
0.01 to 10.0 W (+10 to +40 dBm, in 1 dB steps)
When the transmitter power is set from SuperVisor, it sets the output power of the preamble sent with
every transmit burst. The actual power per modulation will be:
Preamble Average Power
SuperVisor Setting
QPSK Average Power
SuperVisor Setting
16 QAM Average Power
SuperVisor Setting -2 dBm
64 QAM Average Power
SuperVisor Setting -3 dBm
Peak Power
+41 dBm
Note: The Aprisa SR+ transmitter contains power amplifier protection which allows the antenna to be
disconnected from the antenna port without product damage.
Adjacent channel power
< - 60 dBc
Transient adjacent channel power
< - 50 dBc
Spurious emissions
< - 37 dBm
Attack time
< 1.5 ms
Release time
< 1.5 ms
Data turnaround time
< 10 ms
Frequency stability
± 1 ppm
Frequency aging
< 1 ppm / annum
Synthesizer lock time
< 1.5 ms (5 MHz step)
Note: The demo Aprisa SR+ (model number SQ D400-002) has a maximum transmitter power of 5 W with a
peak power of +37 dBm. It also does not support 4-CPFSK modulation.