TECHNICAL NOTE – OPERATION OF MT4000 TWTA
10/24/03
TN4000-3
MCL, INC.
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3.1.8 RF Off Button/LED
When this button is activated the HPA will disable the SSA RF switch. When the Yellow LED
inside the button is illuminated, the SSA RF switch is disabled.
3.1.9 Computer Rx LED
The Yellow LED will illuminate with data received from the computer port.
3.1.10 Computer Tx LED
The Green LED will illuminate with data transmitted to the computer port.
3.1.11 Remote Rx LED
The Yellow LED will illuminate with data received from the remote port.
3.1.12 Remote Tx LED
The Green LED will illuminate with data transmitted to the remote port.
3.1.13 RF High LED
The Yellow LED will illuminate when the detected forward power exceeds the user specified
level.
3.1.14 RF Low LED
The Yellow LED will illuminate when the detected forward power is lower than the user
specified level.
3.1.15 Local Button/LED
When this button is activated the HPA will allow the operator at the front panel to control the
HPA operating configuration. When the Green LED inside the button is illuminated, the
amplifier is controlled from the HPA front panel.
3.1.16 Computer Button/LED
When this button is activated the HPA will allow the device on the computer interface to control
the HPA operating configuration. When the Yellow LED inside the button is illuminated, the
amplifier is controlled via the computer serial port.
