technetix AIMA3000, Руководство пользователя

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AIMA3000.RRAS/G/R Product User Manual
Technetix Group Limited
sales@technetix.com • technetix.com Jan/2018 - V2 19
4 Functional Overview
4.1 Automatic Gain Control
The micro-controller monitors the optical input power and controls the gain. Alarms are activated if the levels are outside
the normal working range.
In AGC mode, the output gain automatically adjusts according to the optical input signal level (within a range of ± 5 dBm) to
ensure RF output stability.
4.2 Manual Gain Control
The user can select the MGC mode when the input power is relatively stable or the user has special requirements based
off the input signal. The user can regulate the gain to accommodate a wide range of input signals and ensure an ideal
output index.
4.3 Output Level Control Chart for RRAS
The output signal level depends on the transmitter configuration, transmitter laser, the received optical RF input signal
level, the receiving device configuration and the link loss.
With the Technetix optical transmitter, when the optical input signal has an OMI of 6% and the module output gain is 42 dB,
the corresponding relationship between the optical input signal power and the output level is shown in the diagram below.
OMI 6%, Gain 42 dB
OPT dBm input RF OUT (dBmV)
2 64
1 62
0 60
-1 58
-2 56
-3 54
-4 52
-5 50
-6 48
-7 46
-8 44
-9 42
-10 40
-11 38
-12 36
-13 34
-14 32
-15 30
-16 28
-17 26
-18 24