User Manual

ASCII

SO<CR>

Opens the dark shutter which allows monochromatic light to enter the

sample chamber. This allows 100% transmittance (zero absorbance) to

be calibrated. The shutter must be open for normal measurements.

ASCII Gnnn<CR> Commands the instrument to go to wavelength nnm. For example:

G540<CR> will set the wavelength to 540nm.

ASCII Fxxxx.x<CR> Sets the concentration factor to xxxx.x. For example: F1000<CR> will set

the factor to 1000.

Note <CR> is an ASCII carriage return character. The last three commands provide an output

which can be readily incorporated into most spreadsheet software packages.

6.1 RS232 Output

The bi-directional RS232 interface is available on the rear panel 25 way D type connector. The

connections are as follows:

TDX 2 – INPUT TO 6300/6320D

RXD 3 – OUTPUT FROM 6300/6320D

RTS 4 – LINKED TO CTS

CTS 5 – LINKED TO RTS

DSR 6 – OUTPUT FROM 6300/6320D

DCD 8 – OUTPUT FROM 6300/6320D

DTR 20 – INPUT TO 6300/6320D (must be active)

GND 7

Suggested interconnections are detailed below:

6300/6320D IBM PC XT (25 way “D”)

TDX 2 2 TXD (From PC)

RXD 3 3 RXD (To PC)

RTS 4 4 RTS (From PC)

CTS 5 5 CTS (To PC)

DSR 6 6 DSR (To PC)

DCD 8 8 DCD (To PC)

DTR 20 20 DTR (From PC)

GND 7 7 GND