Jenway 6305 - Manual (Page 21)

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calibrated.
ASCII SO 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 Commands the instrument to go to wavelength nnm. For example:
G540 will set the wavelength to 540nm.
ASCII Fxxxx.x Sets the concentration factor to xxxx.x. For example: F1000 will set
the factor to 1000.
Note 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 6305
RXD 3 – OUTPUT FROM 6305
RTS 4 – LINKED TO CTS
CTS 5 – LINKED TO RTS
DSR 6 – OUTPUT FROM 6305
DCD 8 – OUTPUT FROM 6305
DTR 20 – INPUT TO 6305 (must be active)
GND 7
Suggested interconnections are detailed below:
6305 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