SM ALFOplus2 - Transmitter Characteristics

MN.00356.E - 003 143
21.2.1 Transmitter characteristics
- Tx bandwidth see Tab.51
- Frequency agility following ITU-R/CEPT channel plans or at 250 kHz
steps
- Built-in transmit power attenuation range 30 dB
- Attenuation Step 1 dB step
- RTPC attenuation range 30 dB
- Accuracy of built-in transmit power attenuation ±2 dB
- Automatic Transmit Power Control (ATPC) range 30 dB
- ATPC Attenuation Step 1 dB
- Spurious emissions according to ETSI EN 301 390
- RF frequency stability ±5 ppm (including ageing)
- Transmit power with ACM Hybrid Mode
: the ACM profiles above the
reference modulation transmit in Peak Constant
Mode (i.e. each modulation transmits the output
power indicated in the table above). Below the
reference modulation the Mean Constant Mode is
followed. RTPC attenuation is applied to Tx power
of lower modulation; higher modulations can
transmit at their maximum power if they do not
overcome the power transmitted at lower
modulation.
- Maximum transmit power see Tab.54
Tab.54 - Maximum transmit power
MODULATION
Nominal Output Power
[dBm]
Guaranteed Output
Power [dBm]
Nominal Power
Tolerance
4QAMs 22 20
±2 dB
4QAM 22 20
16QAMs 20 18
16QAM 20 18
32QAM 20 18
64QAM 18 16
128QAM 18 16
256QAM 17 15
512QAM 17 15
1024QAM 16 14
2048QAM 16 14
4096QAM 16 14