Harris ATLAS ANALOGUE, Руководство пользователя

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7/26/05 888-2523-001 4-11
WARNING: Disconnect primary power prior to servicing.
Section 4 Theory of Operation
ATLAS Analogue
NOTE:
To switch between the A or B RF Drive chain, press the Drive Switch (blue but-
ton) on the front panel of the RFU. The corresponding LED will illuminate.
4.3.5.4 Manual RF MUTE
The Main Controller has a toggle switch, S3 which can be used to mute the transmitter
RF output without shutting it off. This switch is primarily used for initial turn on and
troubleshooting but can be used for any purpose which requires the RF output to be
muted. When activated, the LED (DS13) next to S3 will illuminate and the GUI will
indicate an RF MUTE is present.
4.3.6 External I/O Board
The primary function of the External I/O Board is exactly as its name implies. It is the
interface between the internal transmitter control system and all external or peripheral
devices. Input/Output or I/O ports on the External I/O Board include:
a.
System Control Bus connection to the Main Controller which includes the CAN
bus and parallel control lines.
b.
External I/O Control Cable which connects to the Main Controller. This cable has
an RS-232 connection and several discrete remote control and status lines which
will be used in the event of a failure of the CAN bus. These remote control and
status lines include:
1.
On and OFF
2.
Raise and Lower
3.
Driver A / Driver B Select
4.
Pump 1 / Pump 2 Select
5.
Driver A / Driver B Status
6.
Pump 1 / Pump 2 Status
7.
External Interlock
NOTE:
These 7 lines represent the basic remote control functions and status indications
that will be available if the CAN bus is not functioning.
c. Four (4) RS-232 communications ports.