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Figure 7.2.2-2 - LOS Active with Auto Shutdown Mode Enabled
When the LOS alarm is not active, the amplifier output is enabled. If Auto Shutdown Mode is
Disabled, the amplifier output is enabled regardless of the state of the LOS alarm.
This amplifier module can operate in either Automatic Current Control (ACC) or Automatic Power
Control (APC) mode as selected by the user from the appropriate dropdown menu. When ACC is
selected, the user must enter the target bias current setting which ranges from 0 mA to the Bias
Current Limit shown in the lower-right corner. Once the user types in the target bias current and
presses Enter, the module is commanded to provide that specific bias current to the amplifier as
shown in Figure 7.2.2-3. The internal amplifier has a bias current setting accuracy of ±10% so the
bias current displayed in the main menu can have a variation of up to ±10% compared to the user
entered bias current setting.
