User's Manual

Pro m i SD205-O A Use r Ma nua l – 3. C o nne c tio ns 12
RS232C Inte rfa c e
Ì DTE/ DC E
If the full EIA232 sta nd a rd is imp le me nte d a s d e fine d , the e q uip me nt a t the fa r e nd o f the c o nne c tio n is na me d the DTE
d e vic e (Da ta Te rmina l Eq uip me nt, usua lly a c o mp ute r o r te rmina l), ha s a m a le DB9 c o nne c to r. Eq uip me nt a t the ne a r
e nd o f the c o nne c tio n (the te le p ho ne line inte rfa c e ) is na me d the DC E d e vic e (Da ta C irc uit-te rmina ting Eq uip me nt,
usua lly a mo d e m ), ha s a fe ma le DB9 c o nne c to r. The c a b le linking DTE a nd DC E d e vic e s is a p a ra lle l stra ig ht-thro ug h
c a b le w ith no c ro ss-o ve rs o r se lf-c o nne c ts in the c o nne c to r ho o d s. If a ll d e vic e s e xa c tly fo llo w e d this sta nd a rd , a ll
c a b le s wo uld b e id e ntic al, a nd the re wo uld b e no c ha nc e tha t a n inc o rre c tly wire d c a b le c o uld b e use d .
Ì DB9 Fe m a le
Pro m i SD205-O A is a DC E d e vic e c o mp a tib le w ith RS232 sta nd a rd , ha ving DB9 fe ma le inte rfa c e .
Pin # Sig na l Dire c tio n De sc rip tio n
1 N/ A
2 RxD Inp ut
Re c e ive d Da ta
3 TxD O utp ut
Tra nsm itte d Da ta
4 N/ A
5 N/ A
6 Vc c Inp ut
5V~12V
7 N/ A
8 N/ A
9 G ND
Sig na l G ro und