Chapter 4—HDR 203HD RS-232 Serial Control

 

 

 

 

 

D-Sub 9 pin

Description

 

 

 

 

 

 

 

 

 

 

4

Data Terminal Ready

 

 

 

 

 

 

5

Ground

 

 

 

 

 

 

6

Data Set Ready

 

 

 

 

 

 

7

Request to Send

 

 

 

 

 

 

8

Clear to Send

 

 

 

 

 

 

9

---

 

 

 

 

 

RS-232 Serial Port Parameters

 

 

Duplex:

Full

Baud rate:

9600

 

Data bits:

8

 

Start bit:

1

 

Stop bit:

1

 

Parity:

no parity

Physical:

9-pin D-Sub (female)

Configuration:

D.C.E.

SW Handshake:

XOn/XOff

Ensure that the controlling host computer or ASCII terminal is set with the above serial port parameters.

Null Modem

You may need to connect the HDR 203HD’s serial port adapter to a host computer con- figured as Data Communications Equipment. This is done using a null modem. The net effect of a null modem is to reverse the Transmitted Data and Received Data connections. Also, the Request to Send and Clear to Send connections are reversed. This may be done by using a special “null modem” cable, or by inserting a small “null modem” box or cable in

October 26, 1998

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RGB Spectrum HDR 203HD user manual RS-232 Serial Port Parameters