RFL 9780 16 - 2 RFL Electronics Inc.
April 8, 2003 (973) 334-3100
NOTE
Any device connected to the front-panel RS-232 connector must drive the DTR line high. This
will disable the rear-panel RS-232 port, eliminating any conflict that may arise from two users
attempting to access the RFL 9780 at the same time. Most ports drive the DTR line high.
Figure 16-2. Making connections from the PC to the RFL 9780 rear connector
16.2.2 COMMUNICATIONS INFORMATION
The serial communications port on the terminal or PC must be configured to match the 9780:
Data Bits 8
Stop Bits 1
Parity None
Baud Rate 9600 baud
Handshaking XON/XOFF
The terminal (or PC terminal emulation mode) must support either ANSI or VT-100 control codes for
cleanest visual presentation.
16.3. VIEWING APRIL COMMANDS
Once you have connected a terminal or PC to the RFL 9780 (either directly or through an RFL 9660
Digital Switch) and pressed the [ENTER] key the RFL 9780 will send the following prompt to your
terminal:
9780TxRx>
This means that you have accessed the RFL 9780, and can now use APRIL commands to view lists of
parameter settings, alarm conditions, and other information.
2
3
5
2
3
5
3
2
7
Not used 1
Receive Data (RxD) (input) 2
Transmit Data (TxD) (output) 3
Not Used 4
Signal Common 5
Not Used 6
Not Used 7
Not Used 8
Not Used 9
9780 REAR CONNECTOR TO RFL 9660 OR MODEM
Male DB-9 Female DB-9 Female DB-25 Female
Cable Assembly
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