Jenway 6305 - Manual (Page 21)

21
calibrated.
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 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