Omega OSP SERIES Manuale Utente
46
15
DIGITAL INTERFACE
The OSP portable IR thermometer can be equipped with a digital interface.
The interface circuit is essentially based on the serial communication interface subsystem (SCI) on the chip of the
microcontroller. The output voltage levels are TTL at 0 to +5 V.
An optional adapter to convert the voltage level from 0 to +5 V to RS232 standard levels can be supplied. This adapter is
required to interface OSP with a Personal Computer.
The interface circuit is essentially based on the serial communication interface subsystem (SCI) on the chip of the
microcontroller. The output voltage levels are TTL at 0 to +5 V.
An optional adapter to convert the voltage level from 0 to +5 V to RS232 standard levels can be supplied. This adapter is
required to interface OSP with a Personal Computer.
15.1
Digital output wiring practice
The wiring to digital output signals is made through a mini DIN connector mounted on the lower end of the case.
The pertinent connections are indicated below :
The pertinent connections are indicated below :
5 V
Rx IRtec P
Female miniDIN connector
(case mounted - external view)
Dig. ground
Anal. ground
Analog Output
Tx IRtec P
For easy interconnections a miniDIN connector with cable (cat. EE420123) can be supplied on request.
The color codes of the conductors can change with different suppliers; please check before using.
The color codes of the conductors can change with different suppliers; please check before using.
Front view
1 2
3
4
5
6
7
8
LINDY
CINCH
pin 1 :
brown
black
pin 2 :
red
green
pin 3 :
green
blue
pin 4 :
gray
gray
pin 5 :
purple
yellow
pin 6 :
blue
white
pin 7 :
orange
red
pin 8 :
yellow
brown
15.2
TTL to RS 232 adapter
The cat. BB530001 TTL to RS232 adapter consists of a cable to which are connected a male mini DIN connector (for
OSP
OSP
) and a DB25 connector, that contains the electrical circuitry (for the PC).
The basic circuit and connections are as follows: