NCM-1550-EM30 (1550nm externally modulated optical transmitter) operating manual
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5.
Communication Setup
5.1
RS232 Communication Interface Description
Adopt DB9 standard connector, the pin definitions as follow:
1: No Connect
2: TX
3: RX
4: No Connect
5: GND
6: No Connect
7: No Connect
8: No Connect
9: No Connect
The serial communication uses the standard NRZ form, 1 starts bit, 8 data bits, 1
stop bit and the baud rate is 38400.
5.2
Set up the Hyper Terminal
If you have not setup the Hyper Terminal in your Windows system, follow the steps:
Click “start menu
→
program
→
accessory
→
communication
→
Hyper Terminal”:
This results in the following screen:
