7-14
3. How to update system program
The program disk supplied includes two programs: main program and modem program. To update the
system program, DIP switch #1 and #2 of S3 on the CONTROL/MODEM board must be set to ON
position. Either of an IB-581 or a PC PC/AT compatible is connected as follows.
Using IB-581
Any IB-581 using for DP-6, Inmarsat-B and –C can be used.
Using PC
The PC is connected to the DSC-60 as below.
Connection between DSC-60 and PC/IB-581
The connection is made with the following interconnection cable. The connector to the DSC-60 is a 25-
pin D-SUB male, and to the IBN-581 or PC a 9-pin D-SUB female.
3. How to update system program
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
1
2
3
4
5
6
7
8
9
F.GND
SD
RD
RTS
CTS
DSR
S.GND
DTR
TD-A
1
2
3
4
5
6
7
NC
8
NC
19
S.GND
9
NC
10
20
21
TD-B
22
RD-A
23
RD-B
24
NC
25
D-SUB 9pin D-SUB 25pin
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