Spectronic 20+ Series User Manual

SPECTRONIC 2~ series
Installation & Operating Procedures
To use the Accessory Printer: Data format
Data from the instrument to a printer or other remote
device is sent as shown in the following example:
I. Set the baud rate on the Accessory Printer to 1200
(Refer to the Accessory Printer Operator's Manual,
Cat. No. 335488-10001).
2. Push the PRINT key for a printout.
Remote operation [SPECTRONICI8> 200 and
200+ only]
Command set
574NM -01.5 A CR & LF
3 DK3rr~~-;J -l~~~:E
WVL THEN "NM" RETURN AND LINE
SPACE FEED
DATA TYPE
SK3N (A,T,C,OR F)
(" BLANK, OR +)
SPACE
DATA (3 DIGrrS,
PLUS A DECIMAL
POINT)
An external device may send the commands listed in
Table 2-4 to the SPECTRONICZ> 20D and 20D+
spectrophotometer. Table 2-3 lists conventions for
serial I/O data.
Table 2-3 Serial/fa data conventions
Word length
Parity
Echo
Tenninators
8 data bits, I stop bit; most
significant bit set to 0
None
None
Ignores all carriage return or line
feed characters sent by external
device (except for CR in Auto Baud
Rate mode). Transmits ASCn
CR/LF after every data line.
Table 2-4 Commands for remote operation of SPECTRONICI120D+ spectrophotometers
Function
ie
to absorbance
ie
to transmittance
Set the data mode to concentration
Set the data mode to factor
Reset the spectrophotometer to initial power-up conornon
Set the spectrophotometer's baud rate to the rate used by a computer
connected to the serial output port

Spectronic 20+ Series Specifications

General

Spectral Bandwidth	20 nm
Light Source	Tungsten lamp
Detector	Silicon photodiode
Wavelength Accuracy	±2 nm
Display	Digital display (Spectronic 20+)
Power Requirements	50/60 Hz
Sample Holder	Accommodates standard 10 mm square cuvettes