Nera Inmarsat-c Service Manual page 40

The function is as follows.
- Communicating with RF CON/CPU board (RS-232C, Asynchronous communication)
Baudrate
Data length
Stop bit
Parity
Flow control line : Yes
Communication control: Only TX/RX data
- LCD (U12) control: 640x480 pixel 262,144 color display
(In specification, IC-215 display uses 16 colors.)
- acked up by Lithium battery
B
- Printer connection (U7) : Connecting the Centronics conformance printer (PP-510)
- Keyboard connection (U7): Connecting the PC keyboard
- FDD (U7): For 2HD/2DD
- LAN: Ethernet
- Connecting to PC (DATA)
1) Communicating RF CON/CPU board
RF CON/CPU board reply to the command from TERM CPU board if necessary while the
TERM CPU board does not reply to the command from RF CON/CPU board.
When the RF CON/CPU board does not replay to the command within 2 seconds, TERM
CPU board sends the command up to 2 times. If the RF CON/CPU board does not replay
after that, the error message "No response from Communication unit" appears.
Commands from TERM CPU board to RF CON/CPU board
1) Outputs when changing EGC channel (F8-9-3). The data is memorized by RF
CON/CPU board. Note: One wave operation only
2) When Abort (F7-3) operating. This command is to stop the current processing, such as
scanning and transmitting.
3) When operating Alarm Stop (F10).
4) When the transmission is started, the storing area of the TX message is provided to the
memory on RF CON/CPU board.
5) Login (F7-1). (Login started).
6) Logout (F7-2). (Logout started.)
7) When "Forced clear" is operated such as [F7]-3 and [F3]-2. (Displays Forced Clear
started.)
8) When starting the transmission of the message.
9) When starting PV TEST (F7-7-1). (Performance Verification Test started.)
10) When canceling the TX message (F3-2/Cancel). Cancels when the message status is
Pending, Rejected, Fail or Waiting. Opens the storing area of TX message.
11) When requesting the message delivery (F3-3/Request Delivery Status).
12) When selecting the common channel (F7-4/Select NCS).
13) When selecting the ocean region (F7-5/Ocean Region).
14) When forwarding Receiver Message Log and EGC Log (F6-2 and 3).
: 4800
: 8 bits
: 1 bit
: ODD
2-20
2.3 Terminal unit, IC-215