TrangoLINK Apex™ 18 User Manual Rev. 1.0 Section: Chapter 2 - Getting Started
Page 18
The maximum power input, measured by RSSI, is as depicted in Table 3. If your RSSI value is
higher than listed for the modulation that you are running, you may incur bit error rates as well
as possible damage to the system.
256 QAM:
-34 dBm
128 QAM:
-32 dBm
64QAM:
-30 dBm
32QAM:
-28 dBm
16QAM:
-26 dBm
QPSK:
-24 dBm
Table 3:
Max Power Input
ACM – Adaptive Code Modulation
The ACM feature of the TrangoLINK APEX™ works in conjunction with the MSE of the
unit. The ACM command is an on/off command. Once ACM is enabled and link is
degraded to the MSE threshold specified, the radio will shift down in modulation and
speed based on the setting of the ACM table (Table 4).
Profile # Modulation Improve Next Degrade Next
Speed Setting QAM256
Profile #
Modulation
Improve
Next
Degrade
Next
0
QAM256
-32.1 0 -27.2 1
1
QAM64
-29.2 0 -24.3 2
2
QAM16
-26.3 1 -21.3 3
3
QPSK
-23.3 2 -18.5 3
Speed Setting QAM128
Profile # Modulation
Improve
Next
Degrade
Next
0
QAM128
-32.1 0 -27.2 1
1
QAM64
-29.2 0 -24.3 2
2
QAM32
-26.3 1 -
21.3 3
3
QAM16
-23.3 2 -18.5 4
4
QPSK
-20.3 3 17.1 4
Speed Setting QAM64
Profile # Modulation
Improve
Next
Degrade
Next
0
QAM64
-29.2 0 -24.3 1
1
QAM32
-26.3 0 -
21.3 2
2
QAM16
-23.3 1 -18.5 3
3
QPSK
-20.3 2 17.1 3
Speed Setting QAM32
